21094+1721 STF 2763 BC

21^h 09^m 25.77^s +17° 20' 46.2" P.A. 227.00 sep 30.2 mag 10.88,12.80 Sp F6V

Coord 2000	21094+1721	Discov num	STF2763	Comp	BC	Coord arcsec 2000	21 09 25.77 +17 20 46.2
Date first	1879	Date last	2014	Obs	10
Pa first	227	Pa last	226.6	P.A. Now (θ)	226.6°
Sep first	35.6	Sep last	30.234	Sep. Now (ρ)	30.234"
Mag pri	10.88	Mag sec	12.80	delta mag (ΔM)	1.92	Spectral class	F6V (yellow-white)
Pri motion ra	+000	Sec motion ra	+017
Pri motion dec	-025	Sec motion dec	-005
Notes

rPM=1.05

This double is not physical.

21094+1721 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 201479	106879	21 09 27 +17 20 40	STF 2763 AB	2016	37	293	17.1	9.91	10.88	0.97
Show			21 09 26 +17 20 46	STF 2763 BC	2014	10	227	30.2	10.88	12.80	1.92		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Pegasus

Tycho2

1653-00141-1

Gaia DR2

1763984609392838528

WDS 21094+1721 STF 2763 BC : 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
21094+1721	STF2763	BC	2006	4	47	31.1	10.88	12.40			210925.77+172046.2
21094+1721	STF2763	BC	2013	5	227	30.9	10.88	12.80			210925.77+172046.2
21094+1721	STF2763	BC	2014	10	227	30.2	10.88	12.80	F6V		210925.77+172046.2

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

WDS 21094+1721 STF 2763 BC : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21094+1721 STF 2763 BC : MEASURES

No records found.

WDS 21094+1721 : 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 21094+1721 : ALADIN DSS IMAGE @ 21^h 09^m 25.77^s +17° 20' 46.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21094+1721 STF 2763 BC : 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		21094+1721	STF2763	BC	227	30.2
Show		21094+1721	STF2763	AB	293	17.1	1
Show		21089+1715	HEI 185		35	0.1	12
Show		21087+1717	HEI 184		62	2.9	12
Show		21088+1709	TDT2783		327	1.1	16
Show		21089+1748	HU 365		19	1.0	29
Show		21111+1704	HEI 187		255	1.2	30
Show		21111+1659	KPP 486		334	3.9	32
Show		21099+1648	BPM2335		54	14.9	33
Show		21079+1656	UC 4385		334	56.4	34
Show		21080+1748	LDS4865		106	147.9	35
Show		21106+1650	HU 367		339	0.3	35
Show		21083+1757	BPM2332		327	113.5	40
Show		21125+1727	BPMA252		173	255.4	45
Show		21109+1801	COU 69		330	1.5	47
Show		21126+1706	BPM2342		220	72.4	48
Show		21094+1809	SLN 89		15	2.1	49
Show		21133+1655	BU 681		242	2.9	61
Show		21056+1749	J 797		214	4.1	62
Show		21130+1802	J 577		19	2.4	66
Show		21109+1615	SMA 133		333	11.6	69
Show		21117+1821	LDS1051		88	298.5	70
Show		21141+1741	BPM2349		124	51.8	71
Show		21120+1822	ZIE 12	AB	26	13.3	72
Show		21120+1822	ZIE 12	AC	268	298.4	72
Show		21084+1605	CVR 888		204	19.8	77
Show		21063+1824	BPM2326		314	67.8	77
Show		21041+1712	GWP3033		36	12.1	78
Show		21148+1746	SHN 249		-1	0.2	81
Show		21121+1607	BPM2341		304	66.1	84
Show		21152+1741	LDS4875		127	195.4	85
Show		21150+1750	BPM2352		127	115.1	86
Show		21071+1558	BPM2328		358	88.6	89
Show		21061+1836	TDS1116		265	1.2	90
Show		21044+1625	BPM2317		186	91.4	91
Show		21158+1745	LDS1052		69	8.6	94
Show		21033+1655	J 284		236	2.7	94
Show		21135+1604	SMA 143		8	8.7	94
Show		21029+1708	BPMA250		39	202.4	95
Show		21079+1851	HO 150		136	3.0	96
Show		21114+1546	SMA 135		259	6.8	98
Show		21113+1546	SMA 134		51	6.4	98
Show		21081+1857	J 3125		259	4.7	99
Show		21135+1559	HU 767		183	0.1	101
Show		21158+1642	GRV 441		39	19.0	101
Show		21052+1600	SLW1230		207	13.6	102
Show		21160+1639	BPM2353		262	20.8	103
Show		21091+1906	COU 329		99	0.6	106
Show		21108+1539	SMA 132		351	5.3	106
Show		21041+1837	KPP 546		61	5.1	108
Show		21148+1605	NSN 742		60	1.9	109

WDS 21094+1721 : COMPONENTS

	A	B
B	pa=292.9° sep=16.94"
C	pa=248.8° sep=39.23"	pa=225.3° sep=29.52"

21094+1721 A

Name	HD 201479	Coord arcsec 2000	210926.86+172039.6	Mag	9.91	Spectral class	F7V (yellow-white)
PmRA	2.00	PmDE	-27.0	SAO	106879	Tycho2	1653-00856-1
HD	201479	GC	29578	DM	BD+16 4466

Tycho2

Tycho2	1653-00856-1	Pflag		RAmdeg	317.36192989	DEmdeg	17.34434325
PmRA	1.4	PmDE	-27.4	E RAmdeg	13	E DEmdeg	18
E pmRA	1.0	E pmDE	1.0	EpRAm	1989.28	EpDEm	1985.44
Num	11	Q RAmdeg	1.8	Q DEmdeg	1.5	Q pmRA	1.8
Q pmDE	1.5	BTmag	10.440	E BTmag	0.031	VTmag	9.907
E VTmag	0.027	Prox	169	TYC	T	HIP
CCDM		RAdeg	317.36192722	DEdeg	17.34441444	EpRA 1990	1.66
EpDE 1990	1.21	E RAdeg	13.9	E DEdeg	20.5	Posflg
Corr	0.2

SAO

SAO	106879	DelFlag		RA1950		PmRA1950	0.0008
DE1950		PmDE1950	0.001	Vmag	9.4	SpType	F8
Double code		Source	70	CatNum	29578	DM	BD+16 4466
DMcomp		BDsup		HD	201479	M HD	0
GC	29578	RA1950rad	5.52885611	DE1950rad	0.29917268	PmRA2000	0.0008
PmDE2000	-0.002

CCDM

Ccdm	21094+1721	RComp		Comp	A	Note1
Note2		Discov num		DRAs	2.80	DDEs	-21.5
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	9.9	Sp	F8	PmNote	*
PmRA	-14	PmDE	-42	Dm number	+16 4466	Cat1	BD
Name2	+17 2333	Cat2	AGK2/3	HD	201479	M HD
ADS BDS	B10775	M ADS BDS		N IDS		IDS	21048N1657A
HIC

21094+1721 B

Coord arcsec 2000	210925.77+172046.2		Coord calc	210925.77+172046.2		Mag	10.88		Spectral class	F6V (yellow-white)
PmRA	0.00		PmDE	-25.0		Tycho2	1653-00141-1		Calc delta mag	0.97

Tycho2

Tycho2	1653-00141-1	Pflag		RAmdeg	317.35739674	DEmdeg	17.34619234
PmRA	3.0	PmDE	-26.9	E RAmdeg	30	E DEmdeg	42
E pmRA	1.3	E pmDE	1.3	EpRAm	1985.63	EpDEm	1977.82
Num	4	Q RAmdeg	0.9	Q DEmdeg	1.6	Q pmRA	0.9
Q pmDE	1.6	BTmag	11.466	E BTmag	0.063	VTmag	10.878
E VTmag	0.060	Prox	169	TYC	T	HIP
CCDM		RAdeg	317.35738972	DEdeg	17.34625778	EpRA 1990	1.65
EpDE 1990	1.20	E RAdeg	30.6	E DEdeg	46.0	Posflg
Corr	0.2

CCDM

Ccdm	21094+1721	RComp		Comp	B	Note1
Note2		Discov num	STF2763	DRAs	1.69	DDEs	-14.9
R dRAs	10	Year	1829	Theta	293	Rho	16.8
Obs	16	Vmag	11.1	Sp		PmNote	*
PmRA	-20	PmDE	-53	Dm number		Cat1
Name2	+17 2332	Cat2	AGK2/3	HD		M HD
ADS BDS	B10775	M ADS BDS		N IDS		IDS	21048N1657B
HIC

21094+1721 C

Coord arcsec 2000	210924.31+172025.4		Mag	12.8		PmRA	17.00		PmDE	-5.0
Calc delta mag	2.89		Calc coord	yes