18162+5120 STF 2305 AC

18^h 16^m 13.17^s +51° 19' 46.2" P.A. 197.00 sep 94.5 mag 9.16,12.68 Sp G5

Coord 2000	18162+5120	Discov num	STF2305	Comp	AC	Coord arcsec 2000	18 16 13.17 +51 19 46.2
Date first	1880	Date last	2015	Obs	13
Pa first	198	Pa last	196.5	P.A. Now (θ)	196.5°
Sep first	102.0	Sep last	94.528	Sep. Now (ρ)	94.528"
Mag pri	9.16	Mag sec	12.68	delta mag (ΔM)	3.52	Spectral class	G5 (yellow)
Pri motion ra	-015	Sec motion ra	+001
Pri motion dec	-049	Sec motion dec	+011
Notes

rPM=1.212

This double is not physical.

18162+5120 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 168294	30856	18 16 13 +51 19 46	STF 2305 AB	2018	23	334	5.1	9.16	10.81	1.65
Show		30856	18 16 13 +51 19 46	STF 2305 AC	2015	13	197	94.5	9.16	12.68	3.52		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Draco		SAO	30856		Tycho2	3537-01542-1		Gaia DR2	2124377862116331776
HD	168294		DM	BD+51 2342

WDS 18162+5120 STF 2305 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.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18162+5120	STF2305	AC	2000	7	197	95.3	9.16	12.68		D	181613.17+511946.2
18162+5120	STF2305	AC	2003	8	197	95.1	9.16	12.68		D	181613.17+511946.2
18162+5120	STF2305	AC	2015	9	197	94.5	9.16	12.68	G5		181613.17+511946.2

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

WDS 18162+5120 STF 2305 AC : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18162+5120 STF 2305 AC : MEASURES

No records found.

WDS 18162+5120 : 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 18162+5120 : ALADIN DSS IMAGE @ 18^h 16^m 13.17^s +51° 19' 46.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18162+5120 STF 2305 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		18162+5120	STF2305	AB	334	5.1
Show		18162+5120	STF2305	AC	197	94.5
Show		18172+5103	AG 220		126	10.9	20
Show		18144+5107	ES 783		229	10.8	22
Show		18182+5050	ES 647		291	2.4	36
Show		18120+5110	AG 359	AB	306	23.3	41
Show		18120+5110	ABH 96	AD	298	62.1	41
Show		18120+5110	ABH 96	AE	8	77.1	41
Show		18120+5110	ABH 96	AF	16	47.4	41
Show		18120+5110	AG 359	AC	333	10.4	41
Show		18120+5110	AG 359	BC	107	14.7	42
Show		18126+5146	KPP4093		337	6.0	43
Show		18207+5131	RAO 388		51	0.2	44
Show		18152+5209	ES 646		197	10.8	51
Show		18109+5139	ES 642		273	7.2	54
Show		18220+5122	UC 3560		292	66.1	54
Show		18147+5027	TDT 760		139	0.5	56
Show		18104+5104	COU2392		147	0.6	57
Show		18110+5038	HDS2564		306	0.4	65
Show		18164+5014	UC 3540	CD	177	19.5	66
Show		18164+5014	JNN 117	DE	333	0.7	66
Show		18116+5027	ES 782		114	8.7	69
Show		18238+5139	ES 187	AB	206	2.5	73
Show		18238+5139	ES 187	AC	124	91.3	73
Show		18132+5228	TDT 740		9	0.7	74
Show		18091+5153	WIS 325		82	999.9	75
Show		18134+5230	ES 644		26	9.3	75
Show		18105+5217	KPP4089		336	2.6	79
Show		18221+5222	ES 648		1	5.0	83
Show		18097+5024	HU 674		213	0.7	84
Show		18075+5054	KPP4085		249	24.9	87
Show		18133+5242	A 1376		22	0.3	87
Show		18094+5019	UC 236		322	13.5	89
Show		18061+5116	COU2514		35	0.1	95
Show		18118+4955	COU2393		78	1.9	95
Show		18109+4958	KPP3328		63	4.1	96
Show		18133+4944	HDS2572		69	14.6	100
Show		18054+5155	COU2513		54	1.0	107
Show		18169+5309	CBL 76	AB	8	44.8	110
Show		18046+5111	WIS 323		193	187.4	110
Show		18046+5053	STF2279		180	13.6	114
Show		18041+5053	COU2391		97	2.2	118
Show		18066+5001	COU2276	Aa,Ab	4	0.3	121
Show		18066+5001	STF2290	AB	351	4.0	121
Show		18066+5001	STF2290	AC	69	178.1	121
Show		18277+5016	LEP 158		238	5.1	126
Show		18071+4943	STT 344		140	2.3	131
Show		18091+5312	MLR 584		177	2.7	131
Show		18091+5314	FMR 139		149	22.2	132
Show		18176+5333	UC 3546		122	28.6	134
Show		18207+5330	TDT 808		271	2.2	136

WDS 18162+5120 : COMPONENTS

	A	B
B	pa=342.7° sep=4.76"
C	pa=190.5° sep=92.18"	pa=189.2° sep=96.41"

18162+5120 A

Name	HD 168294	Coord arcsec 2000	181613.17+511946.2	Mag	9.16	Spectral class	G5 (yellow)
PmRA	-15.00	PmDE	-49.0	SAO	30856	Tycho2	3537-01542-1
HD	168294	GC	24962	ADS	11233	DM	BD+51 2342

Tycho2

Tycho2	3537-01542-1	Pflag		RAmdeg	274.05491350	DEmdeg	51.32950991
PmRA	-7.0	PmDE	-52.8	E RAmdeg	10	E DEmdeg	10
E pmRA	1.8	E pmDE	1.8	EpRAm	1991.25	EpDEm	1991.22
Num	3	Q RAmdeg	0.5	Q DEmdeg	5.2	Q pmRA	0.4
Q pmDE	5.4	BTmag	9.614	E BTmag	0.021	VTmag	9.163
E VTmag	0.017	Prox	52	TYC	T	HIP
CCDM		RAdeg	274.05493944	DEdeg	51.32963389	EpRA 1990	1.59
EpDE 1990	1.55	E RAdeg	9.6	E DEdeg	9.6	Posflg
Corr	0.0

SAO

SAO	30856	DelFlag		RA1950		PmRA1950	-0.0015
DE1950		PmDE1950	-0.044	Vmag	8.6	SpType	G5
Double code		Source	70	CatNum	24962	DM	BD+51 2342
DMcomp		BDsup		HD	168294	M HD	0
GC	24962	RA1950rad	4.7780332	DE1950rad	0.89554846	PmRA2000	-0.0008
PmDE2000	-0.044

18162+5120 B

Coord arcsec 2000	181613.02+511950.7		Mag	10.81		PmRA	-28.00		PmDE	6.0
Calc delta mag	1.65		Calc coord	yes

18162+5120 C

Coord arcsec 2000	181611.38+511815.6		Mag	12.68		PmRA	1.00		PmDE	11.0
Tycho2	3537-01580-1		Calc delta mag	3.52		Calc coord	yes

Tycho2

Tycho2	3537-01580-1	Pflag		RAmdeg	274.04301026	DEmdeg	51.30413815
PmRA	5.2	PmDE	12.0	E RAmdeg	119	E DEmdeg	114
E pmRA	3.6	E pmDE	3.2	EpRAm	1976.43	EpDEm	1974.34
Num	3	Q RAmdeg	1.6	Q DEmdeg	0.6	Q pmRA	1.6
Q pmDE	0.7	BTmag	13.747	E BTmag	0.369	VTmag	12.681
E VTmag	0.230	Prox	958	TYC		HIP
CCDM		RAdeg	274.04299083	DEdeg	51.30411000	EpRA 1990	1.61
EpDE 1990	1.56	E RAdeg	130.9	E DEdeg	127.0	Posflg
Corr	0.0