18126+4123 STF 2298 AC

18^h 12^m 38.87^s +41° 23' 08.1" P.A. 40.00 sep 72.9 mag 8.76,12.43 Sp F5 dist. 120.92 pc (394.44 l.y.)

Coord 2000	18126+4123	Discov num	STF2298	Comp	AC	Coord arcsec 2000	18 12 38.87 +41 23 08.1
Date first	1881	Date last	2015	Obs	9
Pa first	40	Pa last	40.1	P.A. Now (θ)	40.1°
Sep first	78.0	Sep last	72.854	Sep. Now (ρ)	72.854"
Mag pri	8.76	Mag sec	12.43	delta mag (ΔM)	3.67	Spectral class	F5 (yellow-white)
Pri motion ra	+010	Sec motion ra	-014
Pri motion dec	+026	Sec motion dec	-006
Notes

rPM=1.436

This double is not physical.

18126+4123 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 167303	47304	18 12 39 +41 23 08	STF 2298 AB	2020	44	172	1.9	8.76	9.94	1.18
Show		47304	18 12 39 +41 23 08	STF 2298 AC	2015	9	40	72.9	8.76	12.43	3.67		<===
Show		47304	18 12 39 +41 23 08	WAL 89 AB,D	2006	4	71	46.6	8.67	13.27	4.60

Quadruple system
5 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Hercules	SAO	47304	HIP	89240	Tycho2	3111-02076-1
Gaia DR2	2112680737732500480	HD	167303	BD	BD+41 3010	Distance	120.92
Distance ly	394.44

WDS 18126+4123 STF 2298 AC : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
STFA		(F. Struve DD - Appendix list #1)	...................
STFB		(F. Struve DD - Appendix list #2)	...................
StF1833A	Ma -	Struve, F.G.W.	1833MmRAS...5...13H
StF1833A	+Mc	cited by Herschel (MemRAS 5, 13, 1833)
StF1833B	Ma -	Struve, F.G.W.	1833AN.....10..389B
StF1833B		cited by Bessel (AN 10, 389, 1833)
StF1837	Ma -	Struve, F.G.W.	1837AN.....14...249
StF1837		Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837		(Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A	Ma -	Struve, F.G.W.	1844QB43.S66.......
StF1844A		cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A	Ma -	Struve, F.G.W.	.
StF1852A		cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A	Ma -	Struve, F.G.W.	1865AN.....64...81E
StF1865A		cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A	Ma -	Struve, F.G.W.	1875AN.....85..323D
StF1875A		cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878	Ma -	Struve, F.G.W.	.
StF1878		Pulkova Observations 9, 1878
StF1878B	Ma -	Struve, F.G.W.	1878Obs.....2..239G
StF1878B		cited by Gledhill (Obs 2, 239, 1878)
StF1880A	Ma -	Struve, F.G.W.	1880Obs.....3..535G
StF1880A		cited by Gledhill (Obs 3, 535, 1880)
StF1906A	Ma -	Struve, F.G.W.	1906QB821.B972.....
StF1906A		cited in BDS (Burnham Double Star Cat.), 1906
StF1906B	Ma -	Struve, F.G.W.	1906MmRAS..56....1L
StF1906B		cited by Lewis (MemRAS 56, 1, 1906)
StF1922A	Ma -	Struve, F.G.W.	1922AN....216...49R
StF1922A		cited by Rabe (AN 216, 49, 1922)
StF1932A	Ma -	Struve, F.G.W.	1932QB821.A43......
StF1932A		cited in ADS (Aitken Double Star Cat.), 1932
StF2002	- -	Weis, J.
StF2002		F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002		USNO Library : QB 821 .S8 W49 2002
StF2022	- -	email note from Jan Weis: 6 July 2022
StF9999	Ma -	Struve, F.G.W.	...................
StF9999		Unpublished, manuscript or reference not found.
Wal1934	Ma j	Wallenquist, A.	1934AnBos...6....3W
Wal1934		Ann. Bosscha Obs. Lembang 6, Pt.2, 1934
Wal1944a	Zw -	Wallenquist, A.	1954MeUpp...85.....
Wal1944a		Medd. Uppsala Obs. #85, 1944
Wal1944a		(Visual measures with wedge photometer attached to 14-inch refractor. No dates
Wal1944a		given for measures; default date = decade of publication added.)
Wal1944b	Zw -	Wallenquist, A.	1954MeUpp...87.....
Wal1944b		Medd. Uppsala Obs. #87, 1944
Wal1944b		(Visual measures with wedge photometer attached to 14-inch refractor. No dates
Wal1944b		given for measures; default date = decade of publication added.)
Wal1947	Zw -	Wallenquist, A.	1947UppAn...2....2W
Wal1947		Ann. Uppsala Astron. Obs. 2, No.2, 1947
Wal1947		(A catalogue containing results of the two prior series, plus additional measures
Wal1947		with the 14-inch refractor and wedge photometer)
Wal1948	Zw -	Wallenquist, A.	1948UppAn...2....3W
Wal1948		Ann. Uppsala Astron Obs. 2, #3, 1948
Wal1948		(Visual measures of southern double stars made with 17-inch refractor of La Plata
Wal1948		and wedge photometer. No dates listed; default date = decade of publication added)
Wal1950	Zd -	Wallenquist, A.	1950MeUpp..103.....
Wal1950		Medd. Uppsala Obs. #103, 1950
Wal1954	Zw -	Wallenquist, A.	1954UppAn...4Q....W
Wal1954		Ann. Uppsala Astron Obs. 4, #2, 1954
Wal1954		("General Catalogue of Differences in Magnitude of Double Stars". Weighted mean
Wal1954		values from numerous sources)
Wal1958	Zw -	Wallenquist, A.	1958MeUpp..118.....
Wal1958		Medd. Uppsala Obs. #118, 1958

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18126+4123	STF2298	AC	2006	7	40	73.3	8.76	12.40	F5	D	181238.87+412308.1
18126+4123	STF2298	AC	2015	9	40	72.9	8.76	12.43	F5		181238.87+412308.1

If you need more information about this double, apply for a data request form to the WDS.

WDS 18126+4123 STF 2298 AC : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18126+4123 STF 2298 AC : MEASURES

No records found.

WDS 18126+4123 : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 18126+4123 : ALADIN DSS IMAGE @ 18^h 12^m 38.87^s +41° 23' 08.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18126+4123 STF 2298 AC : NEIGHBORHOODS

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		18126+4123	STF2298	AB	172	1.9	1
Show		18126+4123	STF2298	AC	40	72.9	1
Show		18126+4123	WAL 89	AB,D	71	46.6	1
Show		18131+4129	TOK 319		301	94.2	8
Show		18158+4107	ES 1651		5	2.5	40
Show		18153+4054	BVD 261		307	20.9	42
Show		18144+4042	TDS 910		265	2.0	46
Show		18126+4033	OSO 96		73	2.8	50
Show		18108+4212	TDT 724		56	0.5	53
Show		18177+4122	LDS4783		135	56.4	57
Show		18117+4020	UC 3526		137	25.0	64
Show		18121+4015	LEO 1		146	1.5	69
Show		18186+4104	BRT1915		12	4.5	70
Show		18058+4054	TDT 677		231	0.5	83
Show		18171+4015	STF2304		69	5.1	85
Show		18109+4242	ROE 5	AB	115	14.9	86
Show		18109+4242	ROE 5	AC	32	193.5	86
Show		18063+4213	ROE 18		171	14.9	88
Show		18109+4242	ROE 6	CD	228	11.1	88
Show		18130+4251	ES 473	BC	173	22.5	89
Show		18130+4251	ES 473	AB	98	30.7	89
Show		18130+4251	SLV 6	AC	129	42.8	89
Show		18097+4001	TDT 714		312	0.8	89
Show		18058+4215	KPP2613		113	24.0	93
Show		18065+4022	STF2282	AB	83	2.7	93
Show		18065+4022	STF2282	AC	80	2.7	93
Show		18065+4022	STF2282	BC	48	0.2	93
Show		18206+4049	LDS4785		180	36.8	97
Show		18199+4033	BRT1916		299	3.2	98
Show		18079+4002	ES 1649	AB	331	7.8	99
Show		18079+4002	ES 1649	AC	226	24.4	99
Show		18043+4206	COU1786	Aa,Ab	11	0.2	103
Show		18043+4206	ROE 1	AB	186	24.3	103
Show		18050+4233	UC 3488		313	4.2	111
Show		18029+4109	ES 1648		9	3.7	112
Show		18132+4315	A 576		282	0.4	112
Show		18217+4039	UC 3559		248	48.2	113
Show		18035+4032	COU1785		30	0.2	116
Show		18092+4314	ES 1417	BC	277	4.2	118
Show		18092+4314	ES 1417	AB	206	13.9	118
Show		18169+3935	TDT 773		128	0.9	119
Show		18031+4158	DOO 10		292	4.9	119
Show		18227+4200	SKF 320	AB	193	1.5	119
Show		18227+4200	KPP4393	BC	218	26.7	119
Show		18026+4204	UC 3480		18	23.8	120
Show		18231+4100	COU1602		107	0.2	121
Show		18221+4222	RAO 390		234	3.3	122
Show		18094+4319	ES 1418		303	4.3	122
Show		18179+4311	KPP4103		295	1.9	123
Show		18199+4258	ES 474		41	3.0	124
Show		18177+3932	TDT 778		177	0.9	125

WDS 18126+4123 : COMPONENTS

	A	B	C
B	pa=174.2° sep=1.85"
C	pa=32.3° sep=65.92"	pa=31.3° sep=67.38"
D	pa=65.6° sep=36.36"	pa=62.9° sep=36.99"	pa=182.9° sep=40.76"

18126+4123 A

Name	HD 167303	Coord arcsec 2000	181238.87+412308.1	Mag	8.76	Spectral class	F5 (yellow-white)
PmRA	12.00	PmDE	26.0	SAO	47304	HIP	89240
Tycho2	3111-02076-1	HD	167303	GC	24865	BD	BD+41 3010

Tycho2

Tycho2	3111-02076-1	Pflag	P	RAmdeg	273.16197126	DEmdeg	41.38550253
PmRA	11.7	PmDE	26.2	E RAmdeg	7	E DEmdeg	7
E pmRA	1.3	E pmDE	1.2	EpRAm	1991.25	EpDEm	1991.23
Num	6	Q RAmdeg	1.4	Q DEmdeg	1.0	Q pmRA	1.5
Q pmDE	0.9	BTmag	9.143	E BTmag	0.017	VTmag	8.761
E VTmag	0.014	Prox	20	TYC	T	HIP	89240
CCDM	A	RAdeg	273.16192528	DEdeg	41.38551222	EpRA 1990	1.59
EpDE 1990	1.63	E RAdeg	7.3	E DEdeg	7.1	Posflg	D
Corr	0.0

SAO

SAO	47304	DelFlag		RA1950		PmRA1950	0.0006
DE1950		PmDE1950	0.021	Vmag	8.2	SpType	F5
Double code		Source	70	CatNum	24865	DM	BD+41 3010
DMcomp		BDsup		HD	167303	M HD	0
GC	24865	RA1950rad	4.7606623	DE1950rad	0.722056	PmRA2000	0.001
PmDE2000	0.021

Hipparcos

Catalog	H	HIP	89240	Proxy	H	RAhms	18 12 38.86
DEdms	+41 23 07.8	Vmag	8.43	VarFlag		R Vmag	G
RAdeg	273.162	DEdeg	41.3855	AstroRef	A	Plx	7.87
CCDM	18127+4124	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	175	Rho	1.965	HD	167303	BD	BD+41 3010
CD		CP		Dm number	+41 3010	VIred	0.52
SpType	F5	R SpType		Coord arcsec 2000	181238.86+412307.8

Hipparcos 2

HIP	89240	Sn	15	So	3	Nc	2
RArad	4.7675749782	DErad	0.7223134378	Plx	8.27	PmRA	10.14
PmDE	20.85	E RArad	0.58	E DErad	0.76	E Plx	0.76
E pmRA	0.55	E pmDE	1.02	Hpmag	8.5188	E Hpmag	0.0015
SHp	0.017	VA	0	BV	0.446	E BV	0.015
VI	0.52

18126+4123 B

Coord arcsec 2000	181238.89+412306.3		Mag	9.94		PmRA	12.00		PmDE	26.0
Tycho2	3111-02076-2		Calc delta mag	1.18		Calc coord	yes

Tycho2

Tycho2	3111-02076-2	Pflag	P	RAmdeg	273.16197126	DEmdeg	41.38550253
PmRA	11.7	PmDE	26.2	E RAmdeg	7	E DEmdeg	7
E pmRA	1.3	E pmDE	1.2	EpRAm	1991.25	EpDEm	1991.23
Num	6	Q RAmdeg	1.4	Q DEmdeg	1.0	Q pmRA	1.5
Q pmDE	0.9	BTmag	10.619	E BTmag	0.037	VTmag	9.936
E VTmag	0.028	Prox	20	TYC	T	HIP	89240
CCDM	B	RAdeg	273.16199694	DEdeg	41.38496556	EpRA 1990	1.59
EpDE 1990	1.62	E RAdeg	19.7	E DEdeg	18.8	Posflg	D
Corr	0.1

18126+4123 C

Coord arcsec 2000	181242.00+412403.8		Mag	12.43		PmRA	-14.00		PmDE	-6.0
Calc delta mag	3.67		Calc coord	yes

18126+4123 D

Coord arcsec 2000	181241.81+412323.1		Mag	13.27		PmRA	-22.00		PmDE	-2.0
Calc delta mag	4.51		Calc coord	yes