12550+4236 ES 2644 AB

12^h 55^m 02.01^s +42° 36' 24.6" P.A. 75.00 sep 39.7 mag 10.88,11.01 Sp F5

Coord 2000	12550+4236	Discov num	ES 2644	Comp	AB	Coord arcsec 2000	12 55 02.01 +42 36 24.6
Date first	1895	Date last	2017	Obs	15
Pa first	71	Pa last	75.3	P.A. Now (θ)	75.3°
Sep first	38.0	Sep last	39.71	Sep. Now (ρ)	39.71"
Mag pri	10.88	Mag sec	11.01	delta mag (ΔM)	0.13	Spectral class	F5 (yellow-white)
Pri motion ra	-017	Sec motion ra	+002
Pri motion dec	+004	Sec motion dec	-013
Notes

rPM=1.46

This double is not physical.

12550+4236 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			12 55 02 +42 36 25	ES 2644 AB	2017	15	75	39.7	10.88	11.01	0.13		<===
Show			12 55 05 +42 36 35	COU 1580 Ba,Bb	2019	11	109	0.4	11.80	11.80	0.00

Triple system
2 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Canes Venatici		Tycho2	3023-02103-1		Gaia DR2	1528465546525976064		ADS	8703
DM	BD+43 2278

WDS 12550+4236 ES 2644 AB : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Cou1952a	Ma -	Couteau, P.	1952JO.....35..101C
Cou1952a	+Mc	J. Obs. 35, 101, 1952
Cou1952b	Ma -	Couteau, P.	1952JO.....35..181C
Cou1952b		J. Obs. 35, 181, 1952
Cou1953a	Ma -	Couteau, P.	1953JO.....36...37C
Cou1953a		J. Obs. 36, 37, 1953
Cou1953b	-	Couteau, P.	1953JO.....36...44C
Cou1953b		J. Obs. 36, 44, 1953
Cou1953c	Ma -	Couteau, P.	1953JO.....36...46C
Cou1953c		J. Obs. 36, 46, 1953
Cou1953d	Ma -	Couteau, P.	1953JO.....36..131C
Cou1953d		J. Obs. 36, 131, 1953
Cou1953e	Mc -	Couteau, P.	1953JO.....37...37C
Cou1953e		J. Obs. 37, 37, 1953
Cou1955a	Ma -	Couteau, P.	1955JO.....38....1C
Cou1955a		J. Obs. 38, 1, 1955
Cou1955b	-	Couteau, P.	1955JO.....38...27C
Cou1955b		J. Obs. 38, 27, 1955
Cou1955c	Ma -	Couteau, P.	1955JO.....38..238C
Cou1955c	+Mc	J. Obs. 38, 238, 1955
Cou1956	Ma -	Couteau, P.	1956JO.....39..137C
Cou1956	+Mc	J. Obs. 39, 137, 1956
Cou1957a	Ma j	Couteau, P.	1957JO.....40..113C
Cou1957a	+Mc	J. Obs. 40, 113, 1957
Cou1957b	orb -	Couteau, P.	1957JO.....40..126C
Cou1957b		J. Obs. 40, 126, 1957
Cou1958a	M+ -	Couteau, P.	1958JO.....41....1C
Cou1958a	+Pa	J. Obs. 41, 1-14, 1958
Cou1958b	orb -	Couteau, P.	1958JO.....41...15C
Cou1958b		J. Obs. 41, 15-19, 1958
Cou1958c	Ma j	Couteau, P.	1958JO.....41...81C
Cou1958c	+Mc	J. Obs. 41, 81-90, 1958
Cou1958d	orb -	Couteau, P.	1958JO.....41...91C
Cou1958d		J. Obs. 41, 91-96, 1958
Cou1959a	Ma -	Couteau, P.	1959JO.....42...17C
Cou1959a	+Mc	J. Obs. 42, 17, 1959
Cou1959b	orb -	Couteau, P.	1959JO.....42...30C
Cou1959b		J. Obs. 42, 30, 1959
Cou1960a	M+ -	Couteau, P.	1960JO.....43....1C
Cou1960a	+orb	J. Obs. 43, 1, 1960
Cou1960b	orb -	Couteau, P.	.
Cou1960b		Bull. Astron. Paris 23, 127, 1960
Cou1960c	orb -	Couteau, P.	1960JO.....43...13C
Cou1960c		J. Obs. 43, 13, 1960
Cou1961a	Ma -	Couteau, P.	1961JO.....44...41C
Cou1961a	+Mc	J. Obs. 44, 41, 1961
Cou1961b	orb -	Couteau, P.	1961JO.....44...54C
Cou1961b		J. Obs. 44, 54-60, 1961
Cou1961c	orb -	Couteau, P.	1961IAUDS..23....1C
Cou1961c		Inf. Circ. 23, 1, 1961
Cou1962a	Ma j	Couteau, P.	1962JO.....45...43C
Cou1962a	+Mc	J. Obs. 45, 43, 1962
Cou1962b	Ma j	Couteau, P.	1962JO.....45..225C
Cou1962b	+Mb	J. Obs. 45, 225, 1962
Cou1962c	orb -	Couteau, P.	.
Cou1962c		Bull. Astron. Paris 24, 15, 1962
Cou1962d	orb -	Couteau, P.	1962IAUDS..26....1C
Cou1962d		Inf. Circ. 26, 1, 1962
Cou1962e	orb -	Couteau, P.	1962JO.....45...37C
Cou1962e		J. Obs. 45, 37, 1962
Cou1962F	Ma -	Couteau, P.	1962QB821.J64......
Cou1962F		cited by Jonckheere (General Cat. of Double Stars, Marseille, 1962)
Cou1963a	Ma j	Couteau, P.	1963JO.....46..155C
Cou1963a	+Mc	J. Obs. 46, 155, 1963
Cou1963b	orb -	Couteau, P.	1963JO.....46..172C
Cou1963b		J. Obs. 46, 172, 1963
Cou1963c	orb -	Couteau, P.	.
Cou1963c		Bull. Astron. Paris 24, 24, 1963
Cou1964	M+ j	Couteau, P.	1964JO.....47..229C
Cou1964	+Pa	J. Obs. 47, 229, 1964
Cou1965a	orb -	Couteau, P.	1965JO.....48...33C
Cou1965a		J. Obs. 48, 33, 1965
Cou1965b	orb -	Couteau, P.	1965JO.....48...35C
Cou1965b		J. Obs. 48, 35, 1965
Cou1966a	Ma -	Couteau, P.	1966JO.....49..221C
Cou1966a	+Pa	J. Obs. 49, 221, 1966
Cou1966b	M+ j	Couteau, P.	1966JO.....49..341C
Cou1966b	+Pa	J. Obs. 49, 341, 1966
Cou1966c	orb -	Couteau, P.	1966JO.....49..369C
Cou1966c		J. Obs. 49, 369, 1966
Cou1967a	Ma -	Couteau, P.	1967JO.....50...33C
Cou1967a	+Pa	J. Obs. 50, 33-39, 1967
Cou1967b	Ma -	Couteau, P.	1967JO.....50...41C
Cou1967b		J. Obs. 50, 41-57, 1967
Cou1967c	orb -	Couteau, P.	1967IAUDS..42....1C
Cou1967c		Inf. Circ. 42, 1, 1967
Cou1968a	Ma j	Couteau, P.	1968JO.....51...31C
Cou1968a		J. Obs. 51, 31, 1968
Cou1968b	Ma j	Couteau, P.	1968JO.....51..337C
Cou1968b		J. Obs. 51, 337, 1968
Cou1970a	Ma j	Couteau, P.	1970A&AS....1..105C
Cou1970a	+Pa	A&AS 1, 105, 1970
Cou1970b	Ma j	Couteau, P.	1970A&AS....1..419C
Cou1970b	+Pa	A&AS 1, 419, 1970
Cou1970c	Ma j	Couteau, P.	1970A&AS....3...51C
Cou1970c	+Pa	A&AS 3, 51, 1970
Cou1971	orb -	Couteau, P. & Morel, P.J.	1971IAUDS..53....1C
Cou1971		Inf. Circ. 53, 1, 1971
Cou1972a	Ma j	Couteau, P.	1972A&AS....5..167C
Cou1972a	+Pa	A&AS 5, 167, 1972
Cou1972b	orb -	Couteau, P. & Morel, P.J.	1972A&AS....5..175C
Cou1972b		A&AS 5, 175, 1972
Cou1972c	orb -	Couteau, P.	1972A&AS....5..181C
Cou1972c		A&AS 5, 181, 1972
Cou1972d	Ma j	Couteau, P.	1972A&AS....6..177C
Cou1972d		A&AS 6, 177, 1972
Cou1972e	Ma j	Couteau, P.	1972A&AS....6..185C
Cou1972e		A&AS 6, 185, 1972
Cou1972f	Ma j	Couteau, P.	1972A&AS....6..419C
Cou1972f	+Pa	A&AS 6, 419, 1972
Cou1973a	Ma j	Couteau, P.	1973A&AS...10..273C
Cou1973a	+Pa	A&AS 10, 273, 1973
Cou1973b	orb -	Couteau, P.	1973A&AS...12..127C
Cou1973b		A&AS 12, 127, 1973
Cou1973c	Ma -	Couteau, P.	1973A&AS...12..137C
Cou1973c	+Pa	A&AS 12, 137, 1973
Cou1973d	orb -	Couteau, P.	1973IAUDS..59....1C
Cou1973d		Inf. Circ. 59, 1, 1973
Cou1974a	Ma -	Couteau, P.	1974A&AS...15..253C
Cou1974a		A&AS 15, 253, 1974
Cou1974b	orb -	Couteau, P.	1974IAUDS..62....1C
Cou1974b		Inf. Circ. 62, 1, 1974
Cou1975a	Ma j	Couteau, P.	1975A&AS...20..379C
Cou1975a		A&AS 20, 379, 1975
Cou1975b	Ma j	Couteau, P.	1975A&AS...20..391C
Cou1975b		A&AS 20, 391, 1975
Cou1975c	orb -	Couteau, P.	1975A&AS...20..411C
Cou1975c		A&AS 20, 411, 1975
Cou1976a	Ma -	Couteau, P.	1976A&AS...24..495C
Cou1976a		A&AS 24, 495, 1976
Cou1976b	Ma -	Couteau, P.	1976A&AS...29..249C
Cou1976b		A&AS 29, 249, 1976
Cou1976c	orb -	Couteau, P.	1976IAUDS..70....1C
Cou1976c		Inf. Circ. 70, 1, 1976
Cou1979a	Ma j	Couteau, P.	1979A&AS...35..197C
Cou1979a		A&AS 35, 197, 1979
Cou1979b	Ma j	Couteau, P.	1979A&AS...36...11C
Cou1979b		A&AS 36, 11, 1979
Cou1981a	Ma -	Couteau, P.	1981A&AS...43...79C
Cou1981a		A&AS 43, 79, 1981
Cou1981b	orb -	Couteau. P.	1981IAUDS..83....1C
Cou1981b		Inf. Circ. 83, 1, 1981
Cou1982a	Ma -	Couteau, P.	1982A&AS...48..443C
Cou1982a		A&AS 48, 443, 1982
Cou1982b	Ma j	Couteau, P.	1982A&AS...50...49C
Cou1982b		A&AS 50, 49, 1982
Cou1982c	orb -	Couteau, P.	1982IAUDS..86....1C
Cou1982c		Inf. Circ. 86, 1, 1982
Cou1982d	orb -	Couteau, P. & Morel, P.J.	1982A&A...105..323C
Cou1982d		A&A 105, 323, 1982
Cou1983a	Ma -	Couteau, P.	1983A&AS...53..441C
Cou1983a		A&AS 53, 441, 1983
Cou1983b	orb -	Couteau, P.	1983IAUDS..90....1C
Cou1983b		Inf. Circ. 90, 1, 1983
Cou1983c	orb -	Couteau, P.	1983IAUDS..91R...1C
Cou1983c		Inf. Circ. 91, 1, 1983
Cou1984a	Ma j	Couteau, P.	1984PASP...96..174C
Cou1984a	+Mb	PASP 96, 174, 1984
Cou1984b	orb -	Couteau, P.	1984A&AS...57..171C
Cou1984b		A&AS 57, 171, 1984
Cou1984c	orb -	Couteau, P.	1984IAUDS..92....1C
Cou1984c		Inf. Circ. 92, 1, 1984
Cou1984d	orb -	Couteau, P.	1984IAUDS..94....1C
Cou1984d		Inf. Circ. 94, 1, 1984
Cou1985a	Ma j	Couteau, P.	1985A&AS...60..237C
Cou1985a		A&AS 60, 237, 1985
Cou1985b	Ma j	Couteau, P.	1985A&AS...60..241C
Cou1985b		A&AS 60, 241, 1985
Cou1985c	orb -	Couteau, P.	1985IAUDS..95....1C
Cou1985c		Inf. Circ. 95, 1, 1985
Cou1985d	orb -	Couteau, P.	1985IAUDS..97....1C
Cou1985d		Inf. Circ. 97, 1, 1985
Cou1986a	orb -	Couteau, P.	1986IAUDS..98....1C
Cou1986a		Inf. Circ. 98, 1, 1986
Cou1986b	orb -	Couteau, P.	1986A&AS...65..505C
Cou1986b		A&AS 65, 505, 1986
Cou1987a	Ma -	Couteau, P.	1987A&AS...67...13C
Cou1987a		A&AS 67, 13, 1987
Cou1987b	Ma j	Couteau, P.	1987A&AS...70..193C
Cou1987b	+Mb	A&AS 70, 193, 1987
Cou1987c	orb -	Couteau, P.	1987A&AS...71..569C
Cou1987c		A&AS 71, 569, 1987
Cou1987d	orb -	Couteau, P.	1987IAUDS.101....1C
Cou1987d		Inf. Circ. 101, 1, 1987
Cou1987e	orb -	Couteau, P.	1987IAUDS.102....1C
Cou1987e		Inf. Circ. 102, 1, 1987
Cou1988a	Mb j	Couteau, P. (Couteau & Ling)	1988A&AS...73..449C
Cou1988a		A&AS 73, 449, 1988
Cou1988b	Ma -	Couteau, P.	1988A&AS...75..163C
Cou1988b		A&AS 75, 163, 1988
Cou1988c	orb -	Couteau, P.	1988IAUDS.104....1C
Cou1988c		Inf. Circ. 104, 1, 1988
Cou1988d	orb -	Couteau, P.	1988IAUDS.105....1C
Cou1988d		Inf. Circ. 105, 1, 1988
Cou1989a	Mb j	Couteau, P. (Couteau et al.)	1989A&AS...78..483C
Cou1989a		A&AS 78, 483, 1989
Cou1989b	Ma j	Couteau, P.	1989A&AS...79..385C
Cou1989b	+Mb	A&AS 79, 385, 1989
Cou1989c	orb -	Couteau, P.	1989A&AS...80..373C
Cou1989c		A&AS 80, 373, 1989
Cou1989d	orb -	Couteau, P.	1989IAUDS.107....1C
Cou1989d		Inf. Circ. 107, 1, 1989
Cou1989e	orb -	Couteau, P.	1989IAUDS.108....1C
Cou1989e		Inf. Circ. 108, 1, 1989
Cou1990a	orb -	Couteau, P.	1990IAUDS.111....1C
Cou1990a		Inf. Circ. 111, 1, 1990
Cou1990b	orb -	Couteau, P.	1990IAUDS.112....1C
Cou1990b		Inf. Circ. 112, 1, 1990
Cou1990c	Ma j	Couteau, P.	1990A&AS...83..331C
Cou1990c	+Mb	A&AS 83, 331, 1990
Cou1991a	Ma j	Couteau, P. (Couteau & Ling)	1991A&AS...88..497C
Cou1991a	+Mb	A&AS 88, 497, 1991
Cou1991b	orb -	Couteau, P.	1991IAUDS.113Q...1C
Cou1991b		Inf. Circ. 113, 1, 1991
Cou1992	Ma j	Couteau, P. (Ling & Couteau)	1992A&AS...95..423C
Cou1992	+Mb	A&AS 95, 423, 1992
Cou1993a	Ma -	Couteau, P.	1993A&AS...97..511C
Cou1993a		A&AS 97, 511, 1993
Cou1993b	orb -	Couteau, P.	1993IAUDS.119....2C
Cou1993b		Inf. Circ. 119, 2, 1993
Cou1993c	orb -	Couteau, P.	1993IAUDS.120....2C
Cou1993c		Inf. Circ. 120, 2, 1993
Cou1993d	Ma j	Couteau, P. (Couteau et al.)	1993A&AS..100..305C
Cou1993d		A&AS 100, 305, 1993
Cou1994	Ma j	Couteau, P. (Couteau & Gili)	1994A&AS..106..377C
Cou1994		A&AS 106, 377, 1994
Cou1996	orb -	Couteau, P.	1996IAUDS.128....1C
Cou1996		Inf. Circ. 128, 1, 1996
Cou1997a	orb -	Couteau, P.	1997IAUDS.131....1C
Cou1997a		Inf. Circ. 131, 1, 1997
Cou1997b	Ma j	Couteau, P.	1997A&AS..126....1C
Cou1997b		A&AS 126, 1, 1997
Cou1999a	Ma -	Couteau, P.	1999IAUDS.138....2C
Cou1999a		Inf. Circ. 138, 2, 1999
Cou1999b	orb -	Couteau, P.	.
Cou1999b		Cat. de 2700 Etoiles Doubles "COU", 1999 Obs. de la Cote d'Azur, 3rd ed.
Cou2002	Ma j	Couteau, P.	.
Cou2002		Updated electronic version of Couteau 2700 Cat. (Cou1999b)
Cou2002		(all measures prior to 2000.5 also in Cou2002b)
Cou2002b	Ma j	Couteau, P.	2002O&T....55....2C
Cou2002b		Obs. et Travaux 55, 2, 2002 (most measures also in Cou2002)
Es_1901	Mb -	Espin, T.E.	1901AN....155..321E
Es_1901		AN 155, 321, 1901 (ES 1 - 39)
Es_1902a	Ma -	Espin, T.E.	1902AN....158..241E
Es_1902a	+Mb	AN 158, 241, 1902 (ES 40 - 112)
Es_1902b	Mb -	Espin, T.E.	1902MNRAS..62..528E
Es_1902b		MNRAS 62, 528, 1902
Es_1902c	Mb j	Espin, T.E.	1902MNRAS..62..402E
Es_1902c		MNRAS 62, 402, 1902
Es_1903	Mb -	Espin, T.E.	1903MNRAS..63..172E
Es_1903		MNRAS 63, 172, 1903 (ES 113 - 150)
Es_1904a	-	Espin, T.E.	1904MNRAS..64..238E
Es_1904a		MNRAS 64, 238, 1904 (data superceded by MNRAS 65, 710, 1905)	1905MNRAS..65..710E
Es_1904b	Mb -	Espin, T.E.	1904MNRAS..64..675E
Es_1904b		MNRAS 64, 675, 1904
Es_1905	Mb -	Espin, T.E.	1905MNRAS..65..710E
Es_1905		MNRAS 65, 710, 1905 (ES 151 - 221)
Es_1906a	Mb -	Espin, T.E.	1906MNRAS..66..141E
Es_1906a		MNRAS 66, 141, 1906 (ES 222 - 269)
Es_1906b	Mb -	Espin, T.E.	1906MNRAS..66..430E
Es_1906b		MNRAS 66, 430, 1906 (ES 270 - 311)
Es_1906C	Mb -	Espin, T.E.	1906QB821.B972.....
Es_1906C		cited in BDS (Burnham Double Star Cat.), 1906
Es_1906D	Mb -	Espin, T.E.	1906MmRAS..56....1L
Es_1906D		cited by Lewis (MemRAS 56, 1, 1906)
Es_1907a	Mb j	Espin, T.E.	1907MNRAS..67..190E
Es_1907a		MNRAS 67, 190, 1907 (ES 312 - 403)
Es_1907b	Mb -	Espin, T.E.	1907MNRAS..67..495E
Es_1907b		MNRAS 67, 495, 1907 (ES 404 - 442)
Es_1908a	Mb j	Espin, T.E.	1908MNRAS..68..202E
Es_1908a		MNRAS 68, 202, 1908 (ES 443 - 551)
Es_1908b	Mb -	Espin, T.E.	1908MNRAS..68..523E
Es_1908b		MNRAS 68, 523, 1908 (ES 552 - 609)
Es_1908c	-	Espin, T.E.	1908JRASC...2..248E
Es_1908c		JRASC 2, 248, 1908 (data also in MNRAS 69, 218, 1909)	1909MNRAS..69..218E
Es_1909a	Mb j	Espin, T.E.	1909MNRAS..69..218E
Es_1909a		MNRAS 69, 218, 1909 (ES 610 - 704)
Es_1909b	Mb j	Espin, T.E.	1909MNRAS..69..604E
Es_1909b		MNRAS 69, 604, 1909 (ES 705 - 743)
Es_1910a	Mb -	Espin, T.E.	1910MNRAS..70..237E
Es_1910a		MNRAS 70, 237, 1910 (ES 744 - 864)
Es_1910b	Mb -	Espin, T.E.	1910MNRAS..70..541E
Es_1910b		MNRAS 70, 541, 1910 (ES 865 - 927)
Es_1911	Mb -	Espin, T.E.	1911MNRAS..71..217E
Es_1911		MNRAS 71, 217, 1911 (ES 928 - 1051)
Es_1912	Mb -	Espin, T.E.	1912MNRAS..72..191E
Es_1912		MNRAS 72, 191, 1912 (ES 1052 - 1125)
Es_1913	Mb j	Espin, T.E.	1913MNRAS..73..162E
Es_1913		MNRAS 73, 162, 1913 (ES 1126 - 1191)
Es_1914	Mb j	Espin, T.E.	1914MNRAS..74..244E
Es_1914		MNRAS 74, 244, 1914 (ES 1192 - 1293)
Es_1915a	Mb -	Espin, T.E.	1915MNRAS..75..203E
Es_1915a		MNRAS 75, 203, 1915 (ES 1294 - 1356)
Es_1915b	Mb -	Espin, T.E.	1915MNRAS..75..555E
Es_1915b		MNRAS 75, 555, 1915 (ES 1357 - 1405)
Es_1915c	Mb -	Espin, T.E.	1915MNRAS..76..210E
Es_1915c		MNRAS 76, 210, 1915 (ES 1406 - 1479)
Es_1917	Mb -	Espin, T.E.	1917MNRAS..77..236E
Es_1917		MNRAS 77, 236, 1917 (ES 1480 - 1600)
Es_1918	Mb j	Espin, T.E.	1918MNRAS..78..189E
Es_1918		MNRAS 78, 189, 1918 (ES 1601 - 1705, MLB 1 - 35)
Es_1919	Mb -	Espin, T.E.	1919MNRAS..79..211E
Es_1919		MNRAS 79, 211, 1919 (ES 1706 - 1768, MLB 36 - 106)
Es_1920	Mb -	Espin, T.E.	1920MNRAS..80..329E
Es_1920		MNRAS 80, 329, 1920 (ES 1769 - 1805, MLB 107 - 149)
Es_1921	Mb j	Espin, T.E.	1921MNRAS..81..232E
Es_1921		MNRAS 81, 232, 1921 (ES 1806 - 1864, MLB 150 - 182)
Es_1922	Mb -	Espin, T.E.	1922MNRAS..82..187E
Es_1922		MNRAS 82, 187, 1922 (ES 1865 - 1933, MLB 183 - 241)
Es_1923	Mb -	Espin, T.E.	1923MNRAS..83..154E
Es_1923		MNRAS 83, 154, 1923 (ES 1934 - 2006, MLB 242 - 275)
Es_1924	Mb -	Espin, T.E.	1924MNRAS..84..162E
Es_1924		MNRAS 84, 162, 1924 (ES 2007 - 2078, MLB 276 - 322)
Es_1925a	Mb -	Espin, T.E.	1925MNRAS..85..276E
Es_1925a		MNRAS 85, 276, 1925 (ES 2079 - 2137, MLB 323 - 376)
Es_1925b	Mb -	Espin, T.E.	1925MNRAS..86...79E
Es_1925b		MNRAS 86, 79, 1925
Es_1926	Mb -	Espin, T.E.	1926MNRAS..86..131E
Es_1926		MNRAS 86, 131, 1926 (ES 2138 - 2209, MLB 377 - 440)
Es_1927	Mb -	Espin, T.E.	1927MNRAS..87..215E
Es_1927		MNRAS 87, 215, 1927 (ES 2210 - 2273, MLB 441 - 510)
Es_1928	Mb -	Espin, T.E.	1928MNRAS..88..185E
Es_1928		MNRAS 88, 185, 1928 (ES 2274 - 2328, MLB 511 - 551)
Es_1929	Mb -	Espin, T.E.	1929MNRAS..89..268E
Es_1929		MNRAS 89, 268, 1929 (ES 2329 - 2362, MLB 552 - 591)
Es_1930	Mb -	Espin, T.E.	1930MNRAS..90..317E
Es_1930		MNRAS 90, 317, 1930 (ES 2363 - 2400, MLB 592 - 630)
Es_1931	Mb -	Espin, T.E.	1931MNRAS..91..294E
Es_1931		MNRAS 91, 294, 1931 (ES 2401 - 2444, MLB 631 - 673)
Es_1932a	Mb -	Espin, T.E.	1932MNRAS..92..214E
Es_1932a		MNRAS 92, 214, 1932 (ES 2445 - 2543, MLB 674 - 732)
Es_1932B	Mb -	Espin, T.E.	1932QB821.A43......
Es_1932B		cited in ADS (Aitken Double Star Cat.), 1932
Es_1933	Mb -	Espin, T.E.	1933MNRAS..93..192E
Es_1933		MNRAS 93, 192, 1933 (ES 2544 - 2575, MLB 733 - 806)
Es_1937A	Mb -	Espin, T.E.	1937AnLei..18....1S
Es_1937A		cited by Strand (Ann. Sterrew. Leiden 18, 1937)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
12550+4236	ES 2644	AB	2000	9	75	39.3	10.88	11.01	F5	D	125502.01+423624.6
12550+4236	ES 2644	AB	2002	10	75	39.3	10.88	11.01	F5	D	125502.01+423624.6
12550+4236	ES 2644	AB	2015	14	75	39.5	10.88	11.01	F5		125502.01+423624.6
12550+4236	ES 2644	AB	2017	15	75	39.7	10.88	11.01	F5		125502.01+423624.6

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WDS 12550+4236 ES 2644 AB : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 12550+4236 ES 2644 AB : MEASURES

No records found.

WDS 12550+4236 : VIRTUAL EYEPIECE

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WDS 12550+4236 : ALADIN DSS IMAGE @ 12^h 55^m 02.01^s +42° 36' 24.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 12550+4236 ES 2644 AB : NEIGHBORHOODS

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Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		12550+4236	ES 2644	AB	75	39.7
Show		12550+4236	COU1580	Ba,Bb	109	0.4	1
Show		12544+4248	HJ 2622	AB	325	29.9	14
Show		12544+4248	SIN 76	AC	329	93.5	14
Show		12544+4251	TDS8577		9	0.9	16
Show		12546+4253	HJ 2623		146	23.6	18
Show		12533+4246	COU1579		141	0.3	22
Show		12571+4223	STF1697		217	28.3	27
Show		12532+4255	CVR 670		338	22.3	28
Show		12563+4300	A 2000		47	1.0	28
Show		12593+4245	HJ 1223	AB	189	18.3	48
Show		12593+4245	SIN 77	AC	277	90.8	48
Show		12593+4245	SIN 77	AD	248	115.7	48
Show		12584+4156	DAM 712	AB	35	4.9	56
Show		12584+4156	SKF2657	AC	136	23.9	56
Show		12582+4153	LDS5766		152	29.1	56
Show		12566+4333	BU 925		209	6.5	60
Show		13008+4213	SKF 276	AB	43	3.2	68
Show		13008+4213	DEA 49	AC	24	134.1	68
Show		12491+4213	ES 2643		45	45.1	70
Show		13020+4241	JNN 84		248	2.9	77
Show		13023+4219	ES 606		286	9.4	83
Show		13024+4308	KPP 856		194	7.1	88
Show		12543+4108	HJL1075		106	119.5	89
Show		12540+4406	LDS4292		67	3.3	92
Show		12548+4105	KPP1796		238	13.9	92
Show		13035+4250	CBL 405		170	43.1	94
Show		13031+4327	UC 180		186	65.3	102
Show		12548+4049	JNN 81		33	0.6	108
Show		13034+4334	SLW 817		47	8.6	108
Show		12450+4248	CBL 395		70	22.6	112
Show		12468+4125	HJ 2620		293	14.4	117
Show		13012+4057	LEP 136		215	4.8	121
Show		12449+4326	A 1783		214	1.8	122
Show		12594+4429	KPP 282		271	3.7	123
Show		13062+4236	TDS8688	Aa,Ab	56	0.4	124
Show		13062+4236	ES 607	AB	224	6.1	124
Show		13055+4141	ES 125		119	2.4	129
Show		12584+4033	HDS1819		195	0.2	129
Show		12568+4029	SKF2656		113	16.7	129
Show		12469+4052	LDS4266		94	2.8	138
Show		13071+4200	TDS8696		324	0.6	139
Show		12465+4054	HDS1792		106	0.3	141
Show		13038+4056	HJ 1226		191	12.1	142
Show		12428+4154	BWL 34		32	12.3	143
Show		12505+4021	LDS4281		112	101.5	144
Show		13073+4142	LDS4318		263	3.9	148
Show		12494+4023	UC 2409	AC	185	17.1	149
Show		12520+4011	ES 1404		30	2.9	149
Show		12586+4013	RDN 2		33	63.4	149
Show		12542+4008	UC 2425		328	93.6	150

WDS 12550+4236 : COMPONENTS

	A	B
B	pa=74.8° sep=39.35"
Bb	pa=75.1° sep=39.61"	pa=114.4° sep=0.34"

12550+4236 A

Coord arcsec 2000	125502.01+423624.6		Mag	10.88		Spectral class	F5 (yellow-white)		PmRA	-17.00
PmDE	4.0		Tycho2	3023-02103-1		ADS	8703		DM	BD+43 2276

Tycho2

Tycho2	3023-02103-1	Pflag		RAmdeg	193.75840498	DEmdeg	42.60685309
PmRA	-16.9	PmDE	4.9	E RAmdeg	36	E DEmdeg	35
E pmRA	1.4	E pmDE	1.3	EpRAm	1983.79	EpDEm	1983.31
Num	4	Q RAmdeg	0.5	Q DEmdeg	1.2	Q pmRA	0.4
Q pmDE	1.2	BTmag	11.501	E BTmag	0.062	VTmag	10.879
E VTmag	0.060	Prox	392	TYC	T	HIP
CCDM		RAdeg	193.75845861	DEdeg	42.60684167	EpRA 1990	1.56
EpDE 1990	1.58	E RAdeg	37.9	E DEdeg	37.3	Posflg
Corr	0.0

12550+4236 B

Coord arcsec 2000	125505.45+423634.9	Coord calc	125504.57+423634.7	Mag	11.8	Mag composta	11.01
Spectral class	F8 (yellow-white)	PmRA	10.00	PmDE	-15.0	Tycho2	3023-01933-1
Calc delta mag	0.92

Tycho2

Tycho2	3023-01933-1	Pflag		RAmdeg	193.77271367	DEmdeg	42.60972355
PmRA	1.4	PmDE	-13.1	E RAmdeg	31	E DEmdeg	27
E pmRA	1.3	E pmDE	1.2	EpRAm	1981.68	EpDEm	1981.91
Num	7	Q RAmdeg	0.4	Q DEmdeg	0.9	Q pmRA	0.4
Q pmDE	0.9	BTmag	11.500	E BTmag	0.062	VTmag	11.010
E VTmag	0.063	Prox	392	TYC	T	HIP
CCDM		RAdeg	193.77270778	DEdeg	42.60974944	EpRA 1990	1.54
EpDE 1990	1.59	E RAdeg	39.3	E DEdeg	37.1	Posflg
Corr	0.0

12550+4236 Bb

Coord arcsec 2000

125505.48+423634.8

Mag

11.8

Calc delta mag

0.92

Calc coord

yes