17449+3108 STF 2213 (HD 161550)

17^h 44^m 50.81^s +31° 07' 54.5" P.A. 327.00 sep 4.9 mag 8.15,8.96 Sp F8 dist. 124.69 pc (406.74 l.y.)

Coord 2000	17449+3108	Discov num	STF2213	Comp		Coord arcsec 2000	17 44 50.81 +31 07 54.5
Date first	1825	Date last	2020	Obs	105
Pa first	336	Pa last	327.3	P.A. Now (θ)	327.3°
Sep first	5.0	Sep last	4.853	Sep. Now (ρ)	4.853"
Mag pri	8.15	Mag sec	8.96	delta mag (ΔM)	0.81	Spectral class	F8 (yellow-white)
Pri motion ra	-018	Sec motion ra	-027
Pri motion dec	-007	Sec motion dec	+011
Notes

rPM=0.69

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 161550	Constellation	Hercules	SAO	66298	HIP	86861
Tycho2	2607-00579-1	Gaia DR2	4597964839165224064	HD	161550	GC	24094
BD	BD+31 3087	Distance	124.69	Distance ly	406.74

WDS 17449+3108 STF 2213 (HD 161550) : 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
17449+3108	STF2213		2007	88	328	4.9	8.15	8.96	F8	D	174450.81+310754.5
17449+3108	STF2213		2008	91	328	4.6	8.15	8.96	F8	D	174450.81+310754.5
17449+3108	STF2213		2017	95	328	4.7	8.15	8.96	F8		174450.81+310754.5
17449+3108	STF2213		2018	97	328	4.8	8.15	8.96	F8		174450.81+310754.5
17449+3108	STF2213		2019	102	327	4.7	8.15	8.96	F8		174450.81+310754.5
17449+3108	STF2213		2020	103	327	4.8	8.15	8.96	F8		174450.81+310754.5

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

WDS 17449+3108 STF 2213 (HD 161550) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 17449+3108 STF 2213 (HD 161550) : MEASURES

Records found: 1

Show	date	username	difficulty	sep	sep_sigma	pa	pa_sigma	delta_mag	#	notes
Show	12/07/21	northisup	easy	4.00		327.00			1	close in mag.

WDS 17449+3108 (HD 161550) : 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 17449+3108 (HD 161550) : ALADIN DSS IMAGE @ 17^h 44^m 50.81^s +31° 07' 54.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 17449+3108 STF 2213 (HD 161550) : 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		17449+3108	STF2213		327	4.9
Show		17456+3032	HO 70		269	0.3	38
Show		17423+3030	TDT 469		96	0.5	51
Show		17407+3117	HDS2501	Aa,Ab	78	0.8	55
Show		17407+3117	STTA157	AB	106	118.3	55
Show		17436+3203	SEI 546		94	21.7	58
Show		17460+3206	SEI 547		241	8.9	61
Show		17499+3134	KPP 402		24	3.5	70
Show		17501+3130	SEI 548		89	17.5	71
Show		17400+3144	SEI 545		325	11.4	73
Show		17455+2950	COU 631		51	5.6	79
Show		17455+2949	COU 632		308	1.1	80
Show		17395+3157	KPP2533		270	22.8	84
Show		17383+3059	TDT 445		176	0.6	86
Show		17516+3129	KPP4065		210	3.6	89
Show		17380+3124	TDT 444		212	1.3	89
Show		17471+3235	COU 634		79	0.2	92
Show		17510+3010	COU 636		269	1.5	98
Show		17484+2942	BRT 30		227	4.3	99
Show		17372+3124	TDT 435	Aa,Ab	15	0.4	99
Show		17372+3124	SEI 544	AB	276	9.7	99
Show		17429+3244	KPP4054		33	4.3	100
Show		17377+3017	HDS2490		164	0.2	105
Show		17512+2946	BRT 31		147	7.6	116
Show		17470+2915	TDS 881	AB	242	1.0	117
Show		17470+2915	TDS 881	Aa,Ab	138	0.2	117
Show		17488+2918	TDS 884	AB	126	1.2	122
Show		17488+2918	SCA 204	AB,C	92	1.6	122
Show		17488+2918	SCA 204	AB,D	47	0.9	122
Show		17544+3135	SEI 550		20	5.7	125
Show		17359+3205	COU 807		143	0.7	128
Show		17348+3100	LDS4756		135	135.0	129
Show		17401+2914	STF2192	AB	31	16.0	130
Show		17401+2914	FYM 245	AC	156	34.9	130
Show		17454+3318	TDT 489		274	0.6	131
Show		17551+3134	AG 215	AB	49	42.8	135
Show		17551+3134	ITF 16	AC	107	11.3	135
Show		17551+3135	ITF 21		313	5.4	135
Show		17529+2941	AC 8		304	0.1	136
Show		17384+2916	HJ 1301		102	10.0	141
Show		17558+3117	SEI 552		235	5.6	142
Show		17532+3243	COU 998	AB	122	1.7	142
Show		17532+3243	GII 43	Aa,Ab	17	0.2	142
Show		17365+3243	SEI 543	AB	178	7.3	143
Show		17365+3243	WAL 84	AC	94	34.5	143
Show		17535+3240	SEI 549		130	12.1	144
Show		17541+2949	AC 9		242	1.0	144
Show		17338+3131	TDT 415		220	0.8	144
Show		17520+2917	AZC 101		270	22.6	145
Show		17455+3338	CRB 124		39	12.1	150
Show		17346+2958	MAB 1	AB	27	0.6	151

WDS 17449+3108 : COMPONENTS

	A
B	pa=331.2° sep=4.66"

17449+3108 A

Componente originario normalizzato	AB	Name	HD 161550	Coord arcsec 2000	174450.81+310754.5	Mag	8.15
Spectral class	F8 (yellow-white)	PmRA	-18.00	PmDE	-7.0	SAO	66298
HIP	86861	Tycho2	2607-00579-1	HD	161550	GC	24094
BD	BD+31 3087

Tycho2

Tycho2	2607-00579-1	Pflag		RAmdeg	266.21171138	DEmdeg	31.13181563
PmRA	-17.8	PmDE	-2.9	E RAmdeg	6	E DEmdeg	6
E pmRA	1.5	E pmDE	1.5	EpRAm	1991.32	EpDEm	1991.42
Num	5	Q RAmdeg	1.2	Q DEmdeg	1.0	Q pmRA	1.1
Q pmDE	1.0	BTmag	8.649	E BTmag	0.016	VTmag	8.150
E VTmag	0.012	Prox	47	TYC	T	HIP	86861
CCDM	A	RAdeg	266.21176056	DEdeg	31.13182222	EpRA 1990	1.51
EpDE 1990	1.61	E RAdeg	5.6	E DEdeg	5.6	Posflg
Corr	-0.3

SAO

SAO	66298	DelFlag		RA1950		PmRA1950	-0.0015
DE1950		PmDE1950	0.009	Vmag	8	SpType	F8
Double code		Source	70	CatNum	24094	DM	BD+31 3087
DMcomp		BDsup		HD	161550	M HD	0
GC	24094	RA1950rad	4.63802513	DE1950rad	0.54369101	PmRA2000	-0.0013
PmDE2000	0.01

Hipparcos

Catalog	H	HIP	86861	Proxy	H	RAhms	17 44 50.82
DEdms	+31 07 54.6	Vmag	7.69	VarFlag		R Vmag	H
RAdeg	266.212	DEdeg	31.1318	AstroRef	A	Plx	9.88
CCDM	17448+3108	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	328	Rho	4.705	HD	161550	BD	BD+31 3087
CD		CP		Dm number	+31 3087	VIred	0.54
SpType	F8...	R SpType		Coord arcsec 2000	174450.82+310754.6

Hipparcos 2

HIP	86861	Sn	15	So	3	Nc	2
RArad	4.6462718085	DErad	0.5433528031	Plx	8.02	PmRA	-27.03
PmDE	8.98	E RArad	0.55	E DErad	0.63	E Plx	0.79
E pmRA	0.56	E pmDE	0.68	Hpmag	7.7996	E Hpmag	0.0013
SHp	0.014	VA	0	BV	0.49	E BV	0.014
VI	0.56

17449+3108 B

Componente originario normalizzato	AB		Coord arcsec 2000	174450.64+310758.6		Mag	8.96		PmRA	-27.00
PmDE	11.0		Calc delta mag	0.81		Calc coord	yes