20450+1244 STTA 209 AC

Coord 2000	20450+1244		Discov num	STTA209		Comp	AC		Coord arcsec 2000	20 45 00.23 +12 43 36.5
Date first	1874		Date last	2016		Obs	35
Pa first	159		Pa last	154.7		P.A. Now (θ)	154.7°
Sep first	96.5		Sep last	97.22		Sep. Now (ρ)	97.22"
Mag pri	9.14		Mag sec	8.17		delta mag (ΔM)	0.97		Spectral class	G (yellow)
Pri motion ra	-009		Sec motion ra	+028
Pri motion dec	-006		Sec motion dec	+005
Notes	N (See Notes)

rPM=1.357 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 197683	106446	20 45 00 +12 43 36	BU 64 AB	2016	165	174	0.7	9.14	8.56	0.58	Y
Show		106447	20 45 00 +12 43 36	STTA 209 AC	2016	35	155	97.2	9.14	8.17	0.97		<===
Show			20 45 00 +12 43 36	BU 64 AD	2016	18	117	64.3	9.14	11.06	1.92
Show		106447	20 45 03 +12 42 08	D 32 CD	2016	12	15	60.8	8.17	11.06	2.89

Quadruple system
4 estimated visually detectable stars in this system

Constellation	Delphinus		SAO	106447		HIP	102400		Tycho2	1097-01669-1
Gaia DR2	1755189375364309504		HD	197704		BD	BD+12 4453		Distance	152.21
Distance ly	496.51

discov_num	notes	refcode
D 32	CD: Measures listed as new CE pair were all actually of DC.

refcode	metd	author	reference
Bu_1873a	Ma -	Burnham, S.W. (BU 1 - 81)	1873MNRAS..33..351B
Bu_1873a		MNRAS 33, 351, 1873
Bu_1873b	Ma -	Burnham, S.W. (BU 82 - 106)	1873MNRAS..33..437B
Bu_1873b		MNRAS 33, 437, 1873
Bu_1873c	-	Burnham, S.W.	1873MNRAS..33..567B
Bu_1873c		MNRAS 33, 567, 1873
Bu_1873d	Ma -	Burnham, S.W. (BU 107 - 182)	1873MNRAS..34...59B
Bu_1873d		MNRAS 34, 59, 1873
Bu_1874a	Ma -	Burnham, S.W. (BU 183 - 229)	1874MNRAS..34..382B
Bu_1874a		MNRAS 34, 382, 1874
Bu_1874b	Ma -	Burnham, S.W. (BU 230 - 300)	1874MNRAS..35...31B
Bu_1874b		MNRAS 35, 31, 1874
Bu_1874c	-	Burnham, S.W.	1874MNRAS..34..370B
Bu_1874c		MNRAS 34, 370, 1874
Bu_1874d	Ma -	Burnham, S.W.	1874MNRAS..34..393B
Bu_1874d		MNRAS 34, 393, 1874
Bu_1874e	Ma -	Burnham, S.W.	1874MNRAS..35...28B
Bu_1874e		MNRAS 35, 28, 1874
Bu_1875	Ma -	Burnham, S.W. (BU 301 - 390)	1875AN.....86..337B
Bu_1875		AN 86, 337, 1875
Bu_1876	Ma -	Burnham, S.W. (BU 391 - 436)	1876AN.....88..225B
Bu_1876		AN 88, 225, 1876
Bu_1876b	-	Burnham, S.W.	1876MNRAS..36...99B
Bu_1876b		MNRAS 36, 99, 1876
Bu_1876c	-	Burnham, S.W.	1876MNRAS..36..331B
Bu_1876c		MNRAS 36, 331, 1876 (no new data)
Bu_1877	Ma -	Burnham, S.W. (BU 453 - 482)	1877MNRAS..38...78B
Bu_1877		MNRAS 38, 78, 1877
Bu_1878a	Ma -	Burnham, S.W.	1878MNRAS..38..408B
Bu_1878a		MNRAS 38, 408, 1878
Bu_1878b	-	Burnham, S.W.	1878MNRAS..38..476B
Bu_1878b		MNRAS 38, 476, 1878
Bu_1878c	-	Burnham, S.W.	1878MNRAS..38..478B
Bu_1878c		MNRAS 38, 478, 1878
Bu_1878d	Ma j	Burnham, S.W.	1878AN.....92..235B
Bu_1878d		AN 92, 235, 1878
Bu_1879	Ma j	Burnham, S.W.	1879MmRAS..44..141B
Bu_1879		MemRAS 44, 141, 1879
Bu_1879B	Ma -	Burnham, S.W.	1879Obs.....3...20G
Bu_1879B		cited by Gledhill (Obs 3, 20, 1879)
Bu_1879C	Ma -	Burnham, S.W.	1879Obs.....3..142G
Bu_1879C		cited by Gledhill (Obs 3, 142, 1879)
Bu_1879d	Ma -	Burnham, S.W.	1879Obs.....3...92B
Bu_1879d		Obs 3, 92, 1879
Bu_1879e	Ma -	Burnham, S.W.	1879MNRAS..40...99B
Bu_1879e		MNRAS 40, 99, 1879
Bu_1880A	Ma -	Burnham, S.W.	1880Obs.....3..508G
Bu_1880A		cited by Gledhill (Obs 3, 508, 1880)
Bu_1880C	Ma -	Burnham, S.W.	1880Obs.....3..314G
Bu_1880C		cited by Gledhill (Obs 3, 314, 1880)
Bu_1880D	Ma -	Burnham, S.W.	1880Obs.....3..352G
Bu_1880D		cited by Gledhill (Obs 3, 352, 1880)
Bu_1880e	Ma -	Burnham, S.W.	1880Obs.....3..408B
Bu_1880e		Obs 3, 408, 1880
Bu_1880f	Ma -	Burnham, S.W.	1880MNRAS..40..497B
Bu_1880f		MNRAS 40, 497, 1880
Bu_1880g	Ma -	Burnham, S.W.	1880MNRAS..41...33B
Bu_1880g		MNRAS 41, 33, 1880
Bu_1881	Ma j	Burnham, S.W.	1881Obs.....4...19G
Bu_1881		cited by Gledhill (Obs 4, 19, 1881)
Bu_1882a	Ma -	Burnham, S.W. (BU 776 - 863)	1882PWasO...1...91B
Bu_1882a		Pub. Washburn Obs. 1, 91, 1882
Bu_1882b	Ma -	Burnham, S.W.	1882PWasO...1..113B
Bu_1882b		Pub. Washburn Obs. 1, 113, 1882
Bu_1883	Ma j	Burnham, S.W. (BU 864 - 1025)	1883MmRAS..47..167B
Bu_1883		MemRAS 47, 167, 1883
Bu_1883b	Ma -	Burnham, S.W.	1883MNRAS..43..318B
Bu_1883b		MNRAS 43, 318, 1883
Bu_1884	Ma j	Burnham, S.W.	1884MNRAS..44..365H
Bu_1884		MNRAS 44, 365, 1884
Bu_1884b	Ma -	Burnham, S.W.	1884AN....110..133B
Bu_1884b		AN 110, 133, 1884
Bu_1884C	Ma -	Burnham, S.W.	1884AReg...22..216S
Bu_1884C		cited by Sadler (Astr. Register 22, 216, 1884)
Bu_1887	Ma -	Burnham, S.W. (BU 734 - 775)	1887PLicO...1...24B
Bu_1887		Pub. Lick Obs. 1, 24,45, 1887
Bu_1889a	Ma -	Burnham, S.W.	1889AN....122..159B
Bu_1889a		AN 122, 159, 1889 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1889b	Ma -	Burnham, S.W. (BU 1026 - 1038)	1889AN....123....1B
Bu_1889b		AN 123, 1, 1889 (measures also in Bu_1894a)	1894PLicO...2..185B
Bu_1889c	Ma -	Burnham, S.W.	1889AN....123...75B
Bu_1889c		AN 123, 75, 1889 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1889d	Ma -	Burnham, S.W.	1889PASP....1...36B
Bu_1889d		PASP 1, 36, 1889 (measures also in Bu_1894)	1894PLicO...2....3B
Bu_1889e	Ma j	Burnham, S.W.	1889AN....121...63B
Bu_1889e		AN 121, 63, 1889 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1889f	Ma j	Bunham, S.W.	1889MNRAS..49..418B
Bu_1889f		MNRAS 49, 418, 1889
Bu_1890a	Ma -	Burnham, S.W. (BU 1093 - 1154)	1889AN....124...49B
Bu_1890a		AN 124, 49, 1890 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1890b	Ma -	Burnham, S.W.	1890AN....125...41B
Bu_1890b		AN 125, 41, 1890 (measures also in Bu_1894)	1894PLicO...2....3B
Bu_1890c	Ma -	Burnham, S.W.	1890PASP....2..138B
Bu_1890c		PASP 2, 138, 1890 (measures also in Bu_1894)	1894PLicO...2....3B
Bu_1891a	orb -	Burnham, S.W.	1891SidM...10..273B
Bu_1891a		Sidereal Messenger 10, 273, 1891
Bu_1891b	orb -	Burnham, S.W.	1891Obs....14..263B
Bu_1891b		Observatory 14, 263, 1891
Bu_1891c	Ma j	Burnham, S.W.	1891AN....127..289B
Bu_1891c		AN 127, 289, 1891
Bu_1892	Ma -	Burnham, S.W. (BU 1225 - 1266)	1892AN....130..257B
Bu_1892		AN 130, 257, 1892 (measures also in Bu_1894e)	1894PLicO...2..221B
Bu_1892b	Ma -	Burnham, S.W.	1892AN....130...77B
Bu_1892b		AN 130, 77, 1892
Bu_1893a	Ma -	Burnham, S.W.	1893AN....131..329B
Bu_1893a		AN 131, 329, 1893 (most measures also in Bu_1894)	1894PLicO...2.....B
Bu_1893b	orb -	Burnham, S.W.	1893MNRAS..53..478B
Bu_1893b		MNRAS 53, 478, 1893
Bu_1893c	orb -	Burnham, S.W.	1893MNRAS..54..119B
Bu_1893c		MNRAS 54, 119, 1893
Bu_1893d	orb -	Burnham, S.W.	1893AstAp..12..494B
Bu_1893d		AstAp 12, 494, 1893
Bu_1893e	orb -	Burnham, S.W.	1893AstAp..12..585B
Bu_1893e		AstAp 12, 585, 1893
Bu_1893f	Ma -	Burnham, S.W. (BU 1267 - 1274)	1893MNRAS..53..273B
Bu_1893f		MNRAS 53, 273, 1893 (most measures also in Bu_1893a)	1893AN....131..329B
Bu_1893g	orb -	Burnham, S.W.	1893MNRAS..53..482B
Bu_1893g		MNRAS 53, 482, 1893
Bu_1894	Ma j	Burnham, S.W.	1894PLicO...2....3B
Bu_1894		Pub. Lick Obs. 2, 3, 1894 (includes most data from Bu_1893a)	1893AN....131..329B
Bu_1894a	Ma j	Burnham, S.W. (BU 1026 - 1038)	1894PLicO...2..185B
Bu_1894a		Pub. Lick Obs. 2, 185, 1894
Bu_1894b	Ma j	Burnham, S.W. (BU 1039 - 1092)	1894PLicO...2..188B
Bu_1894b		Pub. Lick Obs. 2, 188, 1894
Bu_1894c	Ma -	Burnham, S.W. (BU 1093 - 1154)	1894PLicO...2..197B
Bu_1894c		Pub. Lick Obs. 2, 197, 1894
Bu_1894d	Ma -	Burnham, S.W. (BU 1155 - 1224)	1894PLicO...2..206B
Bu_1894d		Pub. Lick Obs. 2, 206, 1894
Bu_1894e	Ma -	Burnham, S.W. (BU 1225 - 1266)	1894PLicO...2..221B
Bu_1894e		Pub. Lick Obs. 2, 221, 1894
Bu_1894f	Ma -	Burnham, S.W. (BU 1267 - 1274)	1894PLicO...2..229B
Bu_1894f		Pub. Lick Obs. 2, 229, 1894 (all measures also in Bu_1893f)	1893MNRAS..53..273B
Bu_1894g	Ma -	Burnham, S.W.	1894PLicO...2..159B
Bu_1894g		Pub. Lick Obs. 2, 159, 1894
Bu_1898	orb -	Burnham, S.W.	1898MNRAS..59...59B
Bu_1898		MNRAS 58, 59, 1898
Bu_1900	Ma -	Burnham, S.W.	1900PYerO...1....1B
Bu_1900		Pub. Yerkes Obs. 1, 1, 1900
Bu_1902A	Ma j	Burnham, S.W.	1902AN....158..241E
Bu_1902A		cited by Espin (AN 158, 241, 1902)
Bu_1903	Ma -	Burnham, S.W.	1903PYerO...2....1B
Bu_1903		Pub. Yerkes Obs. 2, 1, 1903
Bu_1906	Ma j	Burnham, S.W.	1906QB821.B972.....
Bu_1906	+M	Burnham Double Star Cat., 1906
Bu_1906B	Ma -	Burnham, S.W.	1906MmRAS..56....1L
Bu_1906B	+orb	cited by Lewis (MemRAS 56, 1, 1906)
Bu_1907	Ma -	Burnham, S.W.	1907AN....176..129B
Bu_1907		AN 176, 129, 1907 (most data in Bu_1913)	1913QB811.B8.......
Bu_1908	Ma -	Burnham, S.W.	1908MNRAS..68..517B
Bu_1908		MNRAS 68, 517, 1908
Bu_1908A	Ma -	Burnham, S.W.	1908MNRAS..68..465B
Bu_1908A		cited by Barnard (MNRAS 68, 465, 1908)
Bu_1909	Ma -	Burnham, S.W.	1909AN....180...65B
Bu_1909		AN 180, 65, 1909 (most data in Bu_1913)	1913QB811.B8.......
Bu_1909b	Ma j	Burnham, S.W.	1909AN....182..133B
Bu_1909b		AN 182, 133, 1909
Bu_1910	Ma -	Burnham, S.W.	...................
Bu_1910		Journal Astronomique 1, no. 11, 81, 1910
Bu_1910b	Ma -	Burnham, S.W.	1910AN....185..145B
Bu_1910b		AN 185, 145, 1910 (most data in Bu_1913)	1913QB811.B8.......
Bu_1911	-	Burnham, S.W.	1911MNRAS..72..156J
Bu_1911		MNRAS 72, 156, 1911
Bu_1911b	Ma j	Burnham, S.W.	1911AN....189..385B
Bu_1911b		AN 189, 385, 1911
Bu_1913	Ma j	Burnham, S.W.	1913QB811.B8.......
Bu_1913	+Pa	Carnegie Inst. Wash. #168, 1913
Bu_1913	+T
Bu_1918	Ma j	Burnham, S.W.	1918AJ.....31..141B
Bu_1918		AJ 31, 141, 1918
Bu_1923A	Ma -	Burnham, S.W.	1923MNRAS..83..154E
Bu_1923A		cited by Espin (MNRAS 83, 154, 1923)
Bu_1927A	Ma -	Burnham, S.W.	1927sdsc.book......
Bu_1927A		cited in SDS (Southern Double Star Cat.), 1927
Bu_1932A	Ma -	Burnham, S.W.	1932QB821.A43......
Bu_1932A		cited in ADS (Aitken Double Star Cat.), 1932
Bu_1963A	Ma -	Burnham, S.W.	1963icvd.book.....J
Bu_1963A		cited in IDS (Lick Index Cat.), 1963
Bu_2002A	Ma -	Burnham, S.W.	2002yCat.1275....0D
Bu_2002A		cited in CCDM
D__1856a	-	Dembowski, H.	1856AN.....42..231D
D__1856a		AN 42, 231, 1856 (no data)
D__1856b	Ma -	Dembowski, H.	1856AN.....43...47D
D__1856b		AN 43, 47, 1856 (all data also in Mis. Micrometriche)
D__1856c	Ma -	Dembowski, H.	1856AN.....43...77D
D__1856c		AN 43, 77, 1856 (some data also in Mis. Micrometriche)
D__1856d	Ma j	Dembowski, H.	1856AN.....44...57D
D__1856d		AN 44, 57, 1856 (some data also in Mis. Micrometriche)
D__1857a	Ma -	Dembowski, H.	1857AN.....46..317D
D__1857a		AN 46, 317, 1857 (some data also in Mis. Micrometriche)
D__1857b	Ma -	Dembowski, H.	1857AN.....47...79D
D__1857b		AN 47, 79, 1857 (some data also in Mis. Micrometriche)
D__1857c	Ma -	Dembowski, H.	1857AN.....47...91D
D__1857c		AN 47, 91, 1857 (some data also in Mis. Micrometriche)
D__1857d	Ma j	Dembowski, H.	1857AN.....47..105D
D__1857d		AN 47, 105, 1857 (some data also in Mis. Micrometriche)
D__1857e	Ma -	Dembowski, H.	1857AN.....47..157D
D__1857e		AN 47, 157, 1857 (some data also in Mis. Micrometriche)
D__1857f	Ma -	Dembowski, H.	1857AN.....47..171D
D__1857f		AN 47, 171, 1857 (all data also in Mis. Micrometriche)
D__1857g	Ma -	Dembowski, H.	1857AN.....47..189D
D__1857g		AN 47, 189, 1857 (some data also in Mis. Micrometriche)
D__1857h	Ma -	Dembowski, H.	1857AN.....47..205D
D__1857h		AN 47, 205, 1857 (some data also in Mis. Micrometriche)
D__1857i	Ma j	Dembowski, H.	1857AN.....47..219D
D__1857i		AN 47, 219, 1857 (some data also in Mis. Micrometriche)
D__1857j	Ma j	Dembowski, H.	1857AN.....47..233D
D__1857j		AN 47, 233, 1857 (some data also in Mis. Micrometriche)
D__1858	Ma j	Dembowski, H.	1858AN.....47..333D
D__1858		AN 47, 333, 1858 (some data also in Mis. Micrometriche)
D__1859a	Ma j	Dembowski, H.	1859AN.....50..129D
D__1859a		AN 50, 129, 1859 (some data also in Mis. Micrometriche)
D__1859b	Ma -	Dembowski, H.	1859AN.....50..131D
D__1859b		AN 50, 131, 1859 (some data also in Mis. Micrometriche)
D__1859c	Ma -	Dembowski, H.	1859AN.....50..189D
D__1859c		AN 50, 189, 1859 (some data also in Mis. Micrometriche)
D__1859d	Ma -	Dembowski, H.	1859AN.....50..251D
D__1859d		AN 50, 251, 1859 (some data also in Mis. Micrometriche)
D__1859e	Ma -	Dembowski, H.	1859AN.....50..279D
D__1859e		AN 50, 279, 1859 (some data also in Mis. Micrometriche)
D__1859f	Ma -	Dembowski, H.	1859AN.....50..299D
D__1859f		AN 50, 299, 1859 (some data also in Mis. Micrometriche)
D__1859g	Ma -	Dembowski, H.	1859AN.....50..317D
D__1859g		AN 50, 317, 1859 (some data also in Mis. Micrometriche)
D__1859h	Ma j	Dembowski, H.	1859AN.....51...55D
D__1859h		AN 51, 55, 1859 (some data also in Mis. Micrometriche)
D__1859i	Ma j	Dembowski, H.	1859AN.....51...79D
D__1859i		AN 51, 79, 1859 (some data also in Mis. Micrometriche)
D__1859j	Ma -	Dembowski, H.	1859AN.....51...95D
D__1859j		AN 51, 95, 1859 (all data also in Mis. Micrometriche)
D__1859k	Ma -	Dembowski, H.	1859AN.....51..111D
D__1859k		AN 51, 111, 1859 (all data also in Mis. Micrometriche)
D__1859l	Ma j	Dembowski, H.	1859AN.....51..139D
D__1859l		AN 51, 139, 1859 (some data also in Mis. Micrometriche)
D__1860	-	Dembowski, H.	1860AN.....53..113D
D__1860		AN 53, 113, 1860 (mean coordinates, no relative astrometry)
D__1864	Ma j	Dembowski, H.	1864AN.....62..129D
D__1864		AN 62, 129, 1864 (some data also in Mis. Micrometriche)
D__1865A	Ma -	Dembowski, H.	1865AN.....84...81E
D__1865A		cited by Engelmann (AN 64, 81, #1518, 1865)
D__1866	Ma -	Dembowski, H.	1866AN.....66..177D
D__1866		AN 66, 177, 1866 (some data also in Mis. Micrometriche)
D__1869	Ma j	Dembowski, H.	1869AN.....73...97D
D__1869		AN 73, 97, 1869 (some data also in Mis. Micrometriche)
D__1870a	Ma -	Dembowski, H.	1870AN.....75..345D
D__1870a		AN 75, 345, 1870 (some data also in Mis. Micrometriche)
D__1870b	Ma -	Dembowski, H.	1870AN.....75..359D
D__1870b		AN 75, 359, 1870 (some data also in Mis. Micrometriche)
D__1870c	Ma -	Dembowski, H.	1870AN.....75..373D
D__1870c		AN 75, 373, 1870 (some data also in Mis. Micrometriche)
D__1870d	Ma j	Dembowski, H.	1870AN.....76...81D
D__1870d		AN 76, 81, 1870 (some data also in Mis. Micrometriche)
D__1870e	Ma -	Dembowski, H.	1870AN.....76..113D
D__1870e		AN 76, 113, 1870 (some data also in Mis. Micrometriche)
D__1870f	Ma j	Dembowski, H.	1870AN.....76..149D
D__1870f		AN 76, 149, 1870 (some data also in Mis. Micrometriche)
D__1870g	Ma j	Dembowski, H.	1870AN.....76..343D
D__1870g		AN 76, 343, 1870 (some data also in Mis. Micrometriche)
D__1870h	Ma -	Dembowski, H.	1870AN.....76..357D
D__1870h		AN 76, 357, 1870 (some data also in Mis. Micrometriche)
D__1870i	Ma j	Dembowski, H.	1870AN.....76..371D
D__1870i		AN 76, 371, 1870 (some data also in Mis. Micrometriche)
D__1870j	Ma j	Dembowski, H.	1870AN.....77...25D
D__1870j		AN 77, 25, 1870 (some data also in Mis. Micrometriche)
D__1870k	Ma -	Dembowski, H.	1870AN.....77...73D
D__1870k		AN 77, 73, 1870 (some data also in Mis. Micrometriche)
D__1871a	Ma j	Dembowski, H.	1871AN.....77...81D
D__1871a		AN 77, 81, 1871 (some data also in Mis. Micrometriche)
D__1871b	Ma j	Dembowski, H.	1871AN.....77..107D
D__1871b		AN 77, 107, 1871 (some data also in Mis. Micrometriche)
D__1871c	Ma -	Dembowski, H.	1871AN.....77..125D
D__1871c		AN 77, 125, 1871 (some data also in Mis. Micrometriche)
D__1872a	Ma -	Dembowski, H.	1872AN.....79..209D
D__1872a		AN 79, 209, 1872 (some data also in Mis. Micrometriche)
D__1872b	Ma -	Dembowski, H.	1872AN.....79..241D
D__1872b		AN 79, 241, 1872 (some data also in Mis. Micrometriche)
D__1873	-	Dembowski, H.	1873AN.....81..247D
D__1873		AN 81, 247, 1873 (no data)
D__1874	Ma j	Dembowski, H.	1874AN.....83..161D
D__1874		AN 83, 161, 1874 (some data also in Mis. Micrometriche)
D__1874B	Ma -	Dembowski, H.	1874MNRAS..35...28B
D__1874B		cited by Burnham (MNRAS 35, 28, 1874)
D__1875	Ma -	Dembowski, H.	1875AN.....86..337D
D__1875		AN 86, 337, 1875
D__1876a	-	Dembowski, H.	1876AN.....87..191D
D__1876a		AN 87, 191, 1876 (no data)
D__1876b	Ma -	Dembowski, H.	1876AN.....87..205D
D__1876b		AN 87, 205, 1876 (some data also in Mis. Micrometriche)
D__1876c	Ma -	Dembowski, H.	1876AN.....87..233D
D__1876c		AN 87, 233, 1876 (some data also in Mis. Micrometriche)
D__1876d	Ma -	Dembowski, H.	1876AN.....87..253D
D__1876d		AN 87, 253, 1876
D__1876e	Ma -	Dembowski, H.	1876AN.....87..257D
D__1876e		AN 87, 257, 1876
D__1876f	Ma j	Dembowski, H.	1876AN.....87..339D
D__1876f		AN 87, 339, 1876
D__1877	Ma -	Dembowski, H.	1877MNRAS..38...78D
D__1877		MNRAS 38, 78, 1877
D__1878a	Ma -	Dembowski, H.	1878AN.....92..121D
D__1878a		AN 92, 121, 1878
D__1878b	Ma -	Dembowski, H.	1878AN.....92..129D
D__1878b		AN 92, 129, 1878
D__1878c	Ma -	Dembowski, H.	1878AN.....92..145D
D__1878c		AN 92, 145, 1878
D__1878d	Ma -	Dembowski, H.	1878AN.....92..161D
D__1878d		AN 92, 161, 1878
D__1878e	Ma -	Dembowski, H.	1878AN.....92..237D
D__1878e		AN 92, 237, 1878 (all data also in Mis. Micrometriche)
D__1878A	Ma -	Dembowski, H.	1878Obs.....2..146G
D__1878A		cited by Gledhill (Obs 2, 146, 1878)
D__1878B	Ma -	Dembowski, H.	1878Obs.....2..183G
D__1878B		cited by Gledhill (Obs 2, 183, 1878)
D__1878C	Ma -	Dembowski, H.	1878Obs.....2..239G
D__1878C		cited by Gledhill (Obs 2, 239, 1878)
D__1878D	Ma -	Dembowski, H.	1878Obs.....2..269G
D__1878D		cited by Gledhill (Obs 2, 269, 1878)
D__1879	Ma -	Dembowski, H.	.
D__1879		Lincei Acad. Ser 3, 16,17, 1879?
D__1879B	Ma -	Dembowski, H.	1879Obs.....2..380G
D__1879B		cited by Gledhill (Obs 2, 380, 1879)
D__1879C	Ma -	Dembowski, H.	1879Obs.....3...20G
D__1879C		cited by Gledhill (Obs 3, 20, 1879)
D__1879D	Ma -	Dembowski, H.	1879Obs.....3..114G
D__1879D		cited by Gledhill (Obs 3, 114, 1879)
D__1879E	Ma -	Dembowski, H.	1879Obs.....3..169G
D__1879E		cited by Gledhill (Obs 3, 169, 1879)
D__1879F	Ma -	Dembowski, H.	1879Obs.....3..200G
D__1879F		cited by Gledhill (Obs 3, 200, 1879)
D__1879G	-	Dembowski, H.	1879Obs.....3..245G
D__1879G		cited by Gledhill (Obs 3, 245, 1879)
D__1879H	Ma -	Dembowski, H.	1879Obs.....2..344G
D__1879H		cited by Gledhill (Obs 2, 344, 1879)
D__1880A	Ma -	Dembowski, H.	1880Obs.....3..447G
D__1880A		cited by Gledhill (Obs 3, 447, 1880)
D__1880B	Ma -	Dembowski, H.	1880Obs.....3..569G
D__1880B		cited by Gledhill (Obs 3, 569, 1880)
D__1880C	Ma -	Dembowski, H.	1880Obs.....3..275G
D__1880C		cited by Gledhill (Obs 3, 275, 1880)
D__1880D	Ma -	Dembowski, H.	1880Obs.....3..352G
D__1880D		cited by Gledhill (Obs 3, 352, 1880)
D__1883	Ma -	Dembowski, H.	...................
D__1883		Misure micrometriche di Stelle Doppie e multiple...
D__1883		(Rome, Coi tipi del Salviucci), vol. I, 1883
D__1884	Ma -	Dembowski, H.	...................
D__1884		Misure micrometriche di Stelle Doppie e multiple...
D__1884		(Rome, Coi tipi del Salviucci), vol. II, 1884
D__1884A	Ma -	Dembowski, H.	1884AReg...22..216S
D__1884A		cited by Sadler (Astr. Register 22, 216, 1884)
D__1906A	Ma -	Dembowski, H.	1906MmRAS..56....1L
D__1906A		cited by Lewis (MemRAS 56, 1, 1906)
D__1906B	Ma -	Dembowski, H.	1906QB821.B972.....
D__1906B		cited in BDS (Burnham Double Star Cat.), 1906
D__1932A	-	Dembowski, H.	1932QB821.A43......
D__1932A		cited in ADS (Aitken Double Star Cat.), 1932
STTA		(O. Struve DD - Appendix list)	...................
Stt1864	Ma -	Struve, O.	1864MNRAS..24..149S
Stt1864		MNRAS 24, 149, 1864
Stt1866	orb -	Struve, O.	.
Stt1866		Bull. Imp. Acad. Sci. St. Petersburg, 1866
Stt1874	orb -	Struve, O.	.
Stt1874		Compte Rendus 79, 1467, 1874
Stt1875	orb -	Struve, O.	1875MNRAS..35..367S
Stt1875		MNRAS 35, 367, 1875
Stt1878	Ma -	Struve, O.	1878ObPul...9....1S
Stt1878		Pulkova Observations 9, 1, 1878
Stt1879A	Ma -	Struve, O.	1879Obs.....2..304G
Stt1879A		cited by Gledhill (Obs 2, 304, 1879)
Stt1879B	Ma -	Struve, O.	1879Obs.....3..245G
Stt1879B		cited by Gledhill (Obs 3, 245, 1879)
Stt1879C	Ma -	Struve, O.	1879Obs.....2..344G
Stt1879C		cited by Gledhill (Obs 2, 344, 1879)
Stt1880A	Ma -	Struve, O.	1880Obs.....2..605H
Stt1880A		cited by Hunt (Obs. 3, 605, 1880)
Stt1880B	Ma -	Struve, O.	1880Obs.....3..535G
Stt1880B		cited by Gledhill (Obs 3, 535, 1880)
Stt1880C	Ma -	Struve, O.	1880MNRAS..40..497B
Stt1880C		cited by Burnham (MNRAS 40, 497, 1880)
Stt1884A	Ma -	Struve, O.	1884AReg...22..216S
Stt1884A		cited by Sadler (Astr. Register 22, 216, 1884)
Stt1893a	Ma j	Struve, O.	1893ObPul..10....1S
Stt1893a		Pulkova Obs. Observations 10, 1, 1893
Stt1906A	Ma -	Struve, O.	1906MmRAS..56....1L
Stt1906A		cited by Lewis (MemRAS 56, 1, 1906)
Stt1906B	Ma j	Struve, O.	1906QB821.B972.....
Stt1906B		cited in BDS (Burnham Double Star Cat., 1906)
Stt1908A	Ma -	Struve, O.	1908MNRAS..68..465B
Stt1908A		cited by Barnard (MNRAS 68, 465, 1908)
Stt1913A	Ma -	Struve, O.	1913QB811.B8.......
Stt1913A		cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Stt1914A	Ma -	Struve, O.	1914AN....198..107R
Stt1914A		cited by Rabe (AN 198, 107, 1914)
Stt1932A	Ma -	Struve, O.	1932QB821.A43......
Stt1932A		cited in ADS (Aitken Double Star Cat., 1932)

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20450+1244	STTA209	AC	2005	25	156	97.0	9.14	8.17	G	D	204500.25+124336.3
20450+1244	STTA209	AC	2009	28	155	96.9	9.14	8.17	G	N D	204500.23+124336.5
20450+1244	STTA209	AC	2012	30	155	96.9	9.14	8.17	G	N D	204500.23+124336.5
20450+1244	STTA209	AC	2015	31	155	97.5	9.14	8.17	G	N	204500.23+124336.5
20450+1244	STTA209	AC	2016	32	155	97.2	9.14	8.17	G	N	204500.23+124336.5

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

FoV: 30" 1' 5' 15' 30' 1° 2° 4° 5° 8° Limit: 2 3 4 5 10 15 20 25 30 50 100 Primaries only
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(') Show 20450+1244 BU 64 AB 174 0.7 Show 20450+1244 STTA209 AC 155 97.2 Show 20450+1244 BU 64 AD 117 64.3 Show 20450+1244 D 32 CD 15 60.8 2 Show 20460+1235 KPP 477 52 4.5 18 Show 20441+1258 J 1889 10 4.6 19 Show 20440+1256 DAM 218 342 5.7 20 Show 20439+1255 J 1888 158 10.0 20 Show 20457+1302 WFC 258 284 11.7 22 Show 20440+1225 HJ 1566 AB 16 16.9 23 Show 20440+1225 HJ 1566 AC 331 32.4 23 Show 20449+1219 B 2910 Aa,Ab 52 0.1 25 Show 20449+1219 STF2723 AB 140 1.0 25 Show 20449+1219 BU 1492 AC 30 37.0 25 Show 20446+1312 TDS1098 279 0.9 29 Show 20428+1244 BPM2234 331 93.5 33 Show 20471+1257 BPM2265 51 16.1 34 Show 20426+1244 STF2718 BC 346 167.3 36 Show 20426+1244 STF2718 AB 87 8.5 36 Show 20426+1244 STF2718 AC 346 167.2 36 Show 20442+1209 BPM2240 148 55.1 37 Show 20426+1300 GWP2988 23 19.1 39 Show 20444+1205 A 875 208 2.5 40 Show 20418+1231 STF2715 2 12.4 49 Show 20438+1330 BPM2238 50 66.9 50 Show 20446+1154 BPM2251 51 84.7 50 Show 20446+1333 YSC 242 AB 157 1.5 50 Show 20420+1212 BPM2231 330 108.9 55 Show 20488+1248 GWP3000 280 24.1 56 Show 20466+1334 GWP2996 157 54.2 56 Show 20486+1223 BPM2273 132 52.3 56 Show 20429+1152 BPM2235 142 114.9 61 Show 20492+1243 GWP3001 126 94.3 61 Show 20426+1335 HEI 279 BC 211 4.1 63 Show 20426+1335 HEI 279 AB 115 25.1 63 Show 20467+1343 BPM2262 331 74.6 65 Show 20405+1240 HEI 278 135 3.4 66 Show 20496+1233 BU 1495 AB 19 52.1 69 Show 20496+1233 BU 1495 AC 86 105.5 69 Show 20496+1233 BU 1495 AD 276 189.6 69 Show 20413+1327 BPM2228 BC 141 118.1 70 Show 20419+1150 HEI 588 293 2.3 70 Show 20410+1206 HEI 587 36 1.2 70 Show 20413+1327 BPM2227 AB 173 68.5 70 Show 20414+1157 TDT2472 309 0.5 71 Show 20402+1248 BPM2223 290 95.3 71 Show 20421+1341 BPM2232 346 68.4 72 Show 20499+1255 HJ 1577 245 9.4 73 Show 20502+1246 J 3277 326 4.1 75 Show 20465+1131 BPM2258 45 78.9 76 Show 20496+1322 TDT2565 136 1.4 78

	A	B	C
B	pa=174.2° sep=0.68"
C	pa=155.1° sep=97.16"	pa=154.9° sep=96.52"
D	pa=117.6° sep=63.02"	pa=117.1° sep=62.65"	pa=14.2° sep=60.77"

Name	HD 197683		Coord arcsec 2000	204500.23+124336.5		Mag	9.14		Spectral class	G (yellow)
PmRA	-11.00		PmDE	-4.0

Coord arcsec 2000	204500.23+124335.8		Mag	8.56		PmRA	-11.00		PmDE	-4.0
SAO	106446		HIP	102398		Tycho2	1097-00941-1		HD	197683
BD	BD+12 4452		Calc delta mag	0.58		Calc coord	yes

Tycho2	1097-00941-1		Pflag			RAmdeg	311.25098508		DEmdeg	12.72682856
PmRA	-11.0		PmDE	-3.8		E RAmdeg	6		E DEmdeg	7
E pmRA	1.2		E pmDE	1.1		EpRAm	1991.36		EpDEm	1990.81
Num	10		Q RAmdeg	1.0		Q DEmdeg	1.6		Q pmRA	1.0
Q pmDE	1.6		BTmag	8.740		E BTmag	0.018		VTmag	8.219
E VTmag	0.013		Prox	971		TYC	T		HIP	102398
CCDM	AB		RAdeg	311.25101083		DEdeg	12.72683750		EpRA 1990	1.75
EpDE 1990	1.57		E RAdeg	6.1		E DEdeg	7.3		Posflg	P
Corr	0.0

SAO	106446		DelFlag			RA1950			PmRA1950	-0.0008
DE1950			PmDE1950	0.006		Vmag	8.2		SpType	G
Double code			Source	29		CatNum	8113		DM	BD+12 4452
DMcomp			BDsup			HD	197683		M HD	0
GC			RA1950rad	5.42199671		DE1950rad	0.2189419		PmRA2000	-0.0007
PmDE2000	0.003

Catalog	H		HIP	102398		Proxy	H		RAhms	20 45 00.25
DEdms	+12 43 36.3		Vmag	8.06		VarFlag			R Vmag	H
RAdeg	311.251		DEdeg	12.7267		AstroRef	B		Plx	13.18
CCDM	20450+1243		N CCDM	I		Nsys	2		Ncomp	2
MultFlag	C		Source			Qual	A		M HIP	BA
Theta	346		Rho	0.659		HD	197683		BD	BD+12 4452
CD			CP			Dm number	+12 4452		VIred	0.52
SpType	F6V		R SpType			Coord arcsec 2000	204500.25+124336.3

HIP	102398		Sn	15		So	3		Nc	2
RArad	5.4323554048		DErad	0.222123661		Plx	9.39		PmRA	-7.79
PmDE	-2.53		E RArad	1.94		E DErad	2.55		E Plx	3.26
E pmRA	2.37		E pmDE	3.27		Hpmag	8.1631		E Hpmag	0.0016
SHp	0.011		VA	0		BV	0.454		E BV	0.009
VI	0.52

Coord arcsec 2000	204503.03+124208.4		Coord calc	204503.03+124208.4		Mag	8.17		Spectral class	F (yellow-white)
PmRA	28.00		PmDE	5.0		SAO	106447		HIP	102400
Tycho2	1097-01669-1		HD	197704		BD	BD+12 4453		Calc delta mag	0.97

Tycho2	1097-01669-1		Pflag			RAmdeg	311.26262733		DEmdeg	12.70234808
PmRA	28.7		PmDE	3.5		E RAmdeg	6		E DEmdeg	7
E pmRA	1.2		E pmDE	1.1		EpRAm	1991.30		EpDEm	1990.83
Num	9		Q RAmdeg	1.3		Q DEmdeg	1.3		Q pmRA	1.2
Q pmDE	1.3		BTmag	8.576		E BTmag	0.018		VTmag	8.172
E VTmag	0.013		Prox	971		TYC	T		HIP	102400
CCDM			RAdeg	311.26255944		DEdeg	12.70234028		EpRA 1990	1.78
EpDE 1990	1.55		E RAdeg	5.7		E DEdeg	7.1		Posflg
Corr	0.0

SAO	106447		DelFlag			RA1950			PmRA1950	0.0011
DE1950			PmDE1950	0.009		Vmag	8.2		SpType	F
Double code			Source	29		CatNum	8114		DM	BD+12 4453
DMcomp			BDsup			HD	197704		M HD	0
GC			RA1950rad	5.42218818		DE1950rad	0.21851167		PmRA2000	0.0012
PmDE2000	0.006

Catalog	H		HIP	102400		Proxy			RAhms	20 45 03.01
DEdms	+12 42 08.4		Vmag	8.12		VarFlag			R Vmag	G
RAdeg	311.263		DEdeg	12.7023		AstroRef			Plx	7.27
CCDM	20450+1243		N CCDM	I		Nsys	2		Ncomp	1
MultFlag			Source			Qual			M HIP
Theta			Rho			HD	197704		BD	BD+12 4453
CD			CP			Dm number	+12 4453		VIred	0.45
SpType	F		R SpType			Coord arcsec 2000	204503.01+124208.4

HIP	102400		Sn	5		So	0		Nc	1
RArad	5.4325565029		DErad	0.2216976595		Plx	6.57		PmRA	27.62
PmDE	5.46		E RArad	0.55		E DErad	0.41		E Plx	0.69
E pmRA	0.73		E pmDE	0.45		Hpmag	8.2207		E Hpmag	0.0013
SHp	0.011		VA	0		BV	0.36		E BV	0.042
VI	0.45

Coord arcsec 2000	204504.05+124307.3		Mag	11.06		PmRA	9.00		PmDE	5.0
Calc delta mag	1.92		Calc coord	yes