21510+6137 STT 451 (HD 207990)

21^h 50^m 58.10^s +61° 36' 59.8" P.A. 219.00 sep 4.2 mag 7.74,8.61 Sp A2

Coord 2000	21510+6137	Discov num	STT 451	Comp		Coord arcsec 2000	21 50 58.10 +61 36 59.8
Date first	1847	Date last	2016	Obs	57
Pa first	226	Pa last	218.6	P.A. Now (θ)	218.6°
Sep first	4.5	Sep last	4.177	Sep. Now (ρ)	4.177"
Mag pri	7.74	Mag sec	8.61	delta mag (ΔM)	0.87	Spectral class	A2 (white)
Pri motion ra	+022	Sec motion ra	+027
Pri motion dec	+009	Sec motion dec	+008
Notes	V (Proper motion indicates physical)

rPM=0.181 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 207990		Constellation	Cepheus		SAO	19677		Tycho2	4262-01417-1
Gaia DR2	2204252193561751424		HD	207990		GC	30604

WDS 21510+6137 STT 451 (HD 207990) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
STTA		(O. Struve DD - Appendix list)	...................
Stt1864	Ma -	Struve, O.	1864MNRAS..24..149S
Stt1864		MNRAS 24, 149, 1864
Stt1866	orb -	Struve, O.	.
Stt1866		Bull. Imp. Acad. Sci. St. Petersburg, 1866
Stt1874	orb -	Struve, O.	.
Stt1874		Compte Rendus 79, 1467, 1874
Stt1875	orb -	Struve, O.	1875MNRAS..35..367S
Stt1875		MNRAS 35, 367, 1875
Stt1878	Ma -	Struve, O.	1878ObPul...9....1S
Stt1878		Pulkova Observations 9, 1, 1878
Stt1879A	Ma -	Struve, O.	1879Obs.....2..304G
Stt1879A		cited by Gledhill (Obs 2, 304, 1879)
Stt1879B	Ma -	Struve, O.	1879Obs.....3..245G
Stt1879B		cited by Gledhill (Obs 3, 245, 1879)
Stt1879C	Ma -	Struve, O.	1879Obs.....2..344G
Stt1879C		cited by Gledhill (Obs 2, 344, 1879)
Stt1880A	Ma -	Struve, O.	1880Obs.....2..605H
Stt1880A		cited by Hunt (Obs. 3, 605, 1880)
Stt1880B	Ma -	Struve, O.	1880Obs.....3..535G
Stt1880B		cited by Gledhill (Obs 3, 535, 1880)
Stt1880C	Ma -	Struve, O.	1880MNRAS..40..497B
Stt1880C		cited by Burnham (MNRAS 40, 497, 1880)
Stt1884A	Ma -	Struve, O.	1884AReg...22..216S
Stt1884A		cited by Sadler (Astr. Register 22, 216, 1884)
Stt1893a	Ma j	Struve, O.	1893ObPul..10....1S
Stt1893a		Pulkova Obs. Observations 10, 1, 1893
Stt1906A	Ma -	Struve, O.	1906MmRAS..56....1L
Stt1906A		cited by Lewis (MemRAS 56, 1, 1906)
Stt1906B	Ma j	Struve, O.	1906QB821.B972.....
Stt1906B		cited in BDS (Burnham Double Star Cat., 1906)
Stt1908A	Ma -	Struve, O.	1908MNRAS..68..465B
Stt1908A		cited by Barnard (MNRAS 68, 465, 1908)
Stt1913A	Ma -	Struve, O.	1913QB811.B8.......
Stt1913A		cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Stt1914A	Ma -	Struve, O.	1914AN....198..107R
Stt1914A		cited by Rabe (AN 198, 107, 1914)
Stt1932A	Ma -	Struve, O.	1932QB821.A43......
Stt1932A		cited in ADS (Aitken Double Star Cat., 1932)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21510+6137	STT 451		2006	47	218	2.0	7.74	8.61	A2	D	215058.10+613659.8
21510+6137	STT 451		2011	50	218	4.1	7.74	8.61	A2	D	215058.10+613659.8
21510+6137	STT 451		2012	50	219	4.1	7.74	8.61	A2	D	215058.10+613659.8
21510+6137	STT 451		2014	52	218	4.0	7.74	8.61	A2		215058.10+613659.8
21510+6137	STT 451		2016	53	219	4.2	7.74	8.61	A2		215058.10+613659.8

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

WDS 21510+6137 STT 451 (HD 207990) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21510+6137 STT 451 (HD 207990) : MEASURES

No records found.

WDS 21510+6137 (HD 207990) : 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 21510+6137 (HD 207990) : ALADIN DSS IMAGE @ 21^h 50^m 58.10^s +61° 36' 59.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21510+6137 STT 451 (HD 207990) : 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		21510+6137	STT 451		219	4.2
Show		21502+6144	TDT3186		153	0.8	9
Show		21518+6129	STI1063	AB	88	9.8	10
Show		21518+6129	MRI 58	BC	98	2.6	10
Show		21506+6024	STI1059		156	3.3	14
Show		21485+6137	D 33	AB	131	3.5	18
Show		21485+6137	MLB 176	AC	277	10.6	18
Show		21543+6134	ES 1922		164	4.6	24
Show		21521+6206	KR 56		299	4.7	31
Show		21478+6203	HU 971	AB	207	0.3	35
Show		21478+6203	HU 971	AB,C	285	9.0	35
Show		21465+6152	ES 1857	AB	209	2.9	36
Show		21465+6152	ES 1857	AC	96	18.8	36
Show		21549+6159	OSO 161	AB	335	14.8	36
Show		21549+6159	OSO 161	AC	36	21.8	36
Show		21549+6159	OSO 161	AD	19	19.8	36
Show		21549+6159	OSO 161	AE	315	20.4	36
Show		21470+6214	STI1050		11	7.5	47
Show		21576+6144	MLR 63		216	1.0	48
Show		21450+6202	STI1047		194	12.5	49
Show		21573+6118	BU 275		170	0.4	50
Show		21552+6217	TDT3239		89	0.8	50
Show		21462+6100	STI1048		117	13.8	52
Show		21564+6216	HU 973		124	0.2	55
Show		21481+6230	ES 1858	AB	227	6.5	57
Show		21481+6230	ES 1858	AC	33	17.8	57
Show		21534+6235	STI1068		56	10.3	61
Show		21579+6101	MLR 17	AB	22	0.2	62
Show		21579+6101	EVS 45	AC	42	18.2	62
Show		21538+6237	ES 144	BD	43	23.6	63
Show		21546+6234	PET 15		15	2.6	63
Show		21538+6237	PET 13	CE	290	1.2	64
Show		21538+6237	S 800	AB	145	62.8	64
Show		21538+6237	ES 144	AC	278	20.5	64
Show		21538+6237	PET 13	Aa,Ab	212	0.1	64
Show		21540+6237	PET 14		94	0.5	64
Show		21443+6055	HU 969		313	2.4	65
Show		21431+6201	ES 1856		47	4.9	65
Show		21420+6130	FOX 98	AB	170	2.3	65
Show		21420+6130	FOX 98	AC	142	9.2	65
Show		21556+6040	MLR 509		274	1.5	66
Show		21449+6228	MLR 16	AB	34	17.8	67
Show		21449+6228	TRN 33	AC	75	3.0	67
Show		21449+6228	CIA 43	Aa,Ab	-1	-1.0	67
Show		21538+6241	PET 12		169	1.6	67
Show		21599+6200	STI1079		45	8.8	68
Show		22005+6145	TDT3286		95	0.6	68
Show		21447+6233	FYM 281		278	4.1	72
Show		21414+6112	ES 141		179	2.0	73
Show		21474+6245	WIS 354		6	69.0	73
Show		22014+6133	HDS3125		3	0.2	75

WDS 21510+6137 : COMPONENTS

	A
B	pa=200.8° sep=3.49"

21510+6137 A

Componente originario normalizzato	AB	Name	HD 207990	Coord arcsec 2000	215058.10+613659.8	Mag	7.74
Spectral class	A2 (white)	PmRA	22.00	PmDE	9.0	SAO	19677
Tycho2	4262-01417-1	HD	207990	GC	30604	DM	BD+60 2303

Tycho2

Tycho2	4262-01417-1	Pflag		RAmdeg	327.74207542	DEmdeg	61.61661907
PmRA	30.1	PmDE	14.6	E RAmdeg	5	E DEmdeg	6
E pmRA	2.5	E pmDE	2.4	EpRAm	1991.54	EpDEm	1991.58
Num	5	Q RAmdeg	2.0	Q DEmdeg	1.8	Q pmRA	1.9
Q pmDE	1.9	BTmag	7.906	E BTmag	0.016	VTmag	7.739
E VTmag	0.012	Prox	42	TYC	T	HIP
CCDM		RAdeg	327.74192778	DEdeg	61.61658556	EpRA 1990	1.60
EpDE 1990	1.67	E RAdeg	5.4	E DEdeg	5.5	Posflg
Corr	0.4

SAO

SAO	19677	DelFlag		RA1950		PmRA1950	0.0023
DE1950		PmDE1950	0.029	Vmag	7.5	SpType	A2
Double code		Source	70	CatNum	30604	DM	BD+60 2303
DMcomp		BDsup		HD	207990	M HD	0
GC	30604	RA1950rad	5.71378152	DE1950rad	1.07131419	PmRA2000	0.0026
PmDE2000	0.024

CCDM

Ccdm	21510+6137	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.13	DDEs	0.1
R dRAs	10	Year		Theta		Rho
Obs	4	Vmag	7.5	Sp	A2	PmNote	*
PmRA	17	PmDE	27	Dm number	+60 2303	Cat1	BD
Name2	+61 1319	Cat2	AGK2/3	HD	207990	M HD
ADS BDS	A15390	M ADS BDS		N IDS		IDS	21480N6108A
HIC

21510+6137 B

Componente originario normalizzato	AB		Coord arcsec 2000	215057.93+613656.5		Mag	8.61		PmRA	27.00
PmDE	8.0		Tycho2	4262-01417-2		Calc delta mag	0.87		Calc coord	yes

Tycho2

Tycho2	4262-01417-2	Pflag		RAmdeg	327.74046889	DEmdeg	61.61569198
PmRA	22.7	PmDE	0.7	E RAmdeg	9	E DEmdeg	9
E pmRA	4.5	E pmDE	4.2	EpRAm	1991.62	EpDEm	1991.63
Num	2	Q RAmdeg		Q DEmdeg		Q pmRA
Q pmDE		BTmag	8.947	E BTmag	0.019	VTmag	8.609
E VTmag	0.016	Prox	42	TYC	T	HIP
CCDM		RAdeg	327.74035833	DEdeg	61.61569028	EpRA 1990	1.67
EpDE 1990	1.68	E RAdeg	8.6	E DEdeg	8.8	Posflg
Corr	0.4

CCDM

Ccdm	21510+6137	RComp		Comp	B	Note1
Note2		Discov num	STT 451	DRAs		DDEs
R dRAs		Year	1847	Theta	221	Rho	4.3
Obs	19	Vmag	8.5	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A15390	M ADS BDS		N IDS		IDS	21480N6108B
HIC