You're not logged.

Actions

Advanced Search
Go to Simbad
New report
New measure
Login

Computed Lists

Current system

Selections

Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18384+6332 STF 2377 AB (HD 172923)

18^h 38^m 24.22^s +63° 31' 58.3" P.A. 338.00 sep 16.9 mag 6.97,9.83 Sp K2III dist. 602.41 pc (1965.06 l.y.)

Coord 2000	18384+6332	Discov num	STF2377	Comp	AB	Coord arcsec 2000	18 38 24.22 +63 31 58.3
Date first	1898	Date last	2018	Obs	25
Pa first	337	Pa last	337.9	P.A. Now (θ)	337.9°
Sep first	16.8	Sep last	16.89	Sep. Now (ρ)	16.89"
Mag pri	6.97	Mag sec	9.83	delta mag (ΔM)	2.86	Spectral class	K2III (yellow-orange)
Pri motion ra	-021	Sec motion ra	-019
Pri motion dec	+016	Sec motion dec	+017
Notes	V (Proper motion indicates physical)

rPM=0.085 (< 0.3, Physical double)

This double is physical.

18384+6332 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 172923	17963	18 38 24 +63 31 58	STF 2377 AB	2018	25	338	16.9	6.97	9.83	2.86		<===
Show		17963	18 38 24 +63 31 58	WAL 150 AC	2015	8	351	94.9	6.97	9.66	2.69

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	HD 172923	Constellation	Draco	SAO	17963	HIP	91393
Tycho2	4219-01871-1	Gaia DR2	2160231115231121024	HD	172923	GC	25545
BD	BD+63 1445	Distance	602.41	Distance ly	1965.06

WDS 18384+6332 STF 2377 AB (HD 172923) : 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
18384+6332	STF2377	AB	2002	17	338	16.7	6.97	9.83	K2III	D	183824.22+633158.3
18384+6332	STF2377	AB	2003	18	339	17.2	6.97	9.83	K2III	D	183824.22+633158.3
18384+6332	STF2377	AB	2014	19	338	16.8	6.97	9.83	K2III	D	183824.22+633158.3
18384+6332	STF2377	AB	2015	20	338	16.8	6.97	9.83	K2III		183824.22+633158.3
18384+6332	STF2377	AB	2017	21	338	16.9	6.97	9.83	K2III		183824.22+633158.3
18384+6332	STF2377	AB	2018	23	339	16.9	6.97	9.83	K2III		183824.22+633158.3

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

WDS 18384+6332 STF 2377 AB (HD 172923) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18384+6332 STF 2377 AB (HD 172923) : MEASURES

No records found.

WDS 18384+6332 (HD 172923) : 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 18384+6332 (HD 172923) : ALADIN DSS IMAGE @ 18^h 38^m 24.22^s +63° 31' 58.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18384+6332 STF 2377 AB (HD 172923) : 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		18384+6332	STF2377	AB	338	16.9	1
Show		18384+6332	WAL 150	AC	351	94.9	1
Show		18381+6341	KPP2683		134	3.5	10
Show		18377+6342	HU 933		2	0.9	11
Show		18402+6326	MLR 44		116	0.4	14
Show		18393+6348	ES 126	AB	52	72.4	17
Show		18393+6348	ES 126	AD	54	46.0	17
Show		18393+6348	ES 126	BC	24	4.8	18
Show		18352+6342	STF2365		23	20.0	24
Show		18413+6311	ES 1839		17	4.5	29
Show		18361+6405	MLB 214		124	2.0	38
Show		18418+6402	WIS 329		288	491.7	38
Show		18329+6343	STF2357		271	4.7	39
Show		18396+6416	LDS2745		86	37.5	45
Show		18439+6303	KPP4117		24	1.5	48
Show		18338+6415	MLB 213		321	4.3	53
Show		18426+6420	LDS2420		84	9.3	55
Show		18462+6351	STI 861		61	12.8	56
Show		18456+6404	ES 1840		216	9.1	58
Show		18294+6338	KPP 414		187	4.9	61
Show		18430+6427	UC 3653		335	32.5	63
Show		18462+6412	HU 937		333	1.0	66
Show		18305+6412	MLR 62		8	1.0	66
Show		18448+6241	CFN 16		278	1.3	67
Show		18335+6432	FAR 67	Aa,Ab	222	0.1	69
Show		18335+6432	FAR 67	AB	129	1.8	69
Show		18411+6226	LDS2746		288	17.7	69
Show		18367+6222	TDT 956		266	0.5	71
Show		18473+6254	ES 127		143	5.0	71
Show		18303+6244	LDS2415		316	68.4	73
Show		18272+6317	TDT 876		259	0.5	77
Show		18313+6232	HU 932		78	2.7	77
Show		18482+6415	SLN 84		341	2.2	78
Show		18254+6349	SLW1219		313	9.6	89
Show		18518+6318	UC 3699		176	45.4	91
Show		18259+6255	STF2334		202	17.0	93
Show		18497+6429	LDS2422		94	75.9	94
Show		18494+6234	HJ 2846		239	14.6	95
Show		18472+6215	LDS2749		231	21.5	98
Show		18509+6425	TOI1749		37	23.1	98
Show		18510+6425	UC 3695		217	23.0	99
Show		18524+6256	LDS2753		292	3.6	101
Show		18533+6312	TDT1113		90	0.9	102
Show		18373+6147	LDS2418		245	118.6	104
Show		18226+6347	MLR 55		202	1.0	107
Show		18417+6520	LDS2748		226	50.5	110
Show		18218+6358	ES 1837		216	15.3	114
Show		18287+6506	HU 931	AB	82	0.5	114
Show		18287+6506	STF2343	AC	212	8.6	114
Show		18517+6222	ES 1841		105	3.4	115
Show		18232+6440	SHN 37		83	0.2	120

WDS 18384+6332 : COMPONENTS

	A	B
B	pa=349.7° sep=15.90"
C	pa=355.7° sep=93.81"	pa=357.0° sep=78.01"

18384+6332 A

Name	HD 172923	Coord arcsec 2000	183824.22+633158.3	Mag	6.97	Spectral class	K2III (yellow-orange)
PmRA	-21.00	PmDE	16.0	SAO	17963	HIP	91396
Tycho2	4219-01871-1	HD	172923	GC	25545	BD	BD+63 1445

Tycho2

Tycho2	4219-01871-1	Pflag		RAmdeg	279.60091181	DEmdeg	63.53286364
PmRA	-19.4	PmDE	15.9	E RAmdeg	4	E DEmdeg	5
E pmRA	1.3	E pmDE	1.4	EpRAm	1991.49	EpDEm	1991.39
Num	10	Q RAmdeg	1.0	Q DEmdeg	0.8	Q pmRA	0.8
Q pmDE	0.8	BTmag	8.326	E BTmag	0.016	VTmag	6.970
E VTmag	0.010	Prox	169	TYC	T	HIP	91396
CCDM	A	RAdeg	279.60101306	DEdeg	63.53282667	EpRA 1990	1.66
EpDE 1990	1.60	E RAdeg	4.4	E DEdeg	4.5	Posflg
Corr	-0.1

SAO

SAO	17963	DelFlag		RA1950		PmRA1950	-0.005
DE1950		PmDE1950	0.023	Vmag	6.9	SpType	K0
Double code		Source	70	CatNum	25545	DM	BD+63 1445
DMcomp		BDsup		HD	172923	M HD	0
GC	25545	RA1950rad	4.87839375	DE1950rad	1.10804796	PmRA2000	-0.0042
PmDE2000	0.022

Hipparcos

Catalog	H	HIP	91396	Proxy		RAhms	18 38 24.24
DEdms	+63 31 58.2	Vmag	6.85	VarFlag		R Vmag	H
RAdeg	279.601	DEdeg	63.5328	AstroRef	A	Plx	5.26
CCDM	18384+6332	N CCDM	I	Nsys	2	Ncomp	1
MultFlag	C	Source	P	Qual	A	M HIP
Theta		Rho		HD	172923	BD	BD+63 1445
CD		CP		Dm number	+63 1445	VIred	1.09
SpType	K0	R SpType		Coord arcsec 2000	183824.24+633158.2

Hipparcos 2

HIP	91396	Sn	95	So	3	Nc	1
RArad	4.8799582899	DErad	1.1088570137	Plx	4.38	PmRA	-19.91
PmDE	15.74	E RArad	0.54	E DErad	0.59	E Plx	0.56
E pmRA	0.63	E pmDE	0.69	Hpmag	7.0146	E Hpmag	0.0068
SHp	0.018	VA	0	BV	1.14	E BV	0.01
VI	1.1

CCDM

Ccdm	18384+6332	RComp		Comp	A	Note1
Note2		Discov num		DRAs	0.16	DDEs	-2.1
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	7.1	Sp	K0	PmNote	*
PmRA	-27	PmDE	13	Dm number	+63 1445	Cat1	BD
Name2	+63 971	Cat2	AGK2/3	HD	172923	M HD
ADS BDS	A11559	M ADS BDS		N IDS		IDS	18377N6326A
HIC	91396

18384+6332 B

Coord arcsec 2000	183823.80+633213.9		Mag	9.83		PmRA	-19.00		PmDE	17.0
HIP	91393		Calc delta mag	2.86		Calc coord	yes

Hipparcos

Catalog	H	HIP	91393	Proxy		RAhms	18 38 23.31
DEdms	+63 32 13.8	Vmag	9.83	VarFlag		R Vmag	H
RAdeg	279.597	DEdeg	63.5372	AstroRef	B	Plx	14.22
CCDM	18384+6332	N CCDM	I	Nsys	2	Ncomp	1
MultFlag	C	Source	I	Qual	A	M HIP
Theta		Rho		HD		BD
CD		CP		Dm number		VIred	0.7
SpType		R SpType		Coord arcsec 2000	183823.31+633213.8

Hipparcos 2

HIP	91393	Sn	95	So	3	Nc	1
RArad	4.8798900529	DErad	1.1089327479	Plx	1.66	PmRA	-17.63
PmDE	11.8	E RArad	1.57	E DErad	1.64	E Plx	1.66
E pmRA	1.63	E pmDE	2.12	Hpmag	10.1632	E Hpmag	0.1034
SHp	0	VA	0	BV	0.664	E BV	0.051
VI	0.73

CCDM

Ccdm	18384+6332	RComp		Comp	B	Note1
Note2		Discov num	STF2377	DRAs	-0.81	DDEs	13.1
R dRAs	10	Year	1900	Theta	340	Rho	16.5
Obs	6	Vmag	8.7	Sp		PmNote	*
PmRA	-35	PmDE	5	Dm number		Cat1
Name2	+63 970	Cat2	AGK2/3	HD		M HD
ADS BDS	A11559	M ADS BDS	N	N IDS		IDS	18377N6326B
HIC	91393

18384+6332 C

Coord arcsec 2000	183823.18+633331.8		Mag	9.66		PmRA	-1.00		PmDE	-2.0
Tycho2	4219-01847-1		Calc delta mag	2.69		Calc coord	yes

Tycho2

Tycho2	4219-01847-1	Pflag		RAmdeg	279.59106657	DEmdeg	63.55892920
PmRA	-3.2	PmDE	-6.8	E RAmdeg	18	E DEmdeg	22
E pmRA	3.1	E pmDE	3.1	EpRAm	1990.79	EpDEm	1989.93
Num	4	Q RAmdeg	1.2	Q DEmdeg	0.7	Q pmRA	1.1
Q pmDE	0.7	BTmag	11.551	E BTmag	0.072	VTmag	9.661
E VTmag	0.026	Prox	790	TYC	T	HIP
CCDM		RAdeg	279.59108778	DEdeg	63.55894556	EpRA 1990	1.72
EpDE 1990	1.53	E RAdeg	19.0	E DEdeg	23.6	Posflg
Corr	-0.1