21023+2037 HDS 2998

21^h 02^m 15.34^s +20° 37' 26.2" P.A. 130.00 sep 0.1 mag 10.24,12.28 Sp K0 dist. 1162.79 pc (3793.02 l.y.)

Coord 2000	21023+2037	Discov num	HDS2998	Comp		Coord arcsec 2000	21 02 15.34 +20 37 26.2
Date first	1991	Date last	2011	Obs	2
Pa first	173	Pa last	130.4	P.A. Now (θ)	130.4°
Sep first	0.1	Sep last	0.104	Sep. Now (ρ)	0.104"
Mag pri	10.24	Mag sec	12.28	delta mag (ΔM)	2.04	Spectral class	K0 (yellow-orange)
Pri motion ra	+008	Sec motion ra
Pri motion dec	-016	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation	Vulpecula		HIP	103817		Tycho2	1656-00167-1		Gaia DR2	1837688722092636928
BD	BD+20 4809		Distance	1162.79		Distance ly	3793.02

WDS 21023+2037 HDS 2998 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
HDS		Hipparcos Double Star (from additional DD list)	...................

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21023+2037	HDS2998		1991	1	173	0.1	10.24	12.28	K0		210215.34+203726.2
21023+2037	HDS2998		2011	2	130	0.1	10.24	12.28	K0		210215.34+203726.2

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

WDS 21023+2037 HDS 2998 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21023+2037 HDS 2998 : MEASURES

No records found.

WDS 21023+2037 : VIRTUAL EYEPIECE

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Pass over with the mouse cursor to display the catalog designation.

WDS 21023+2037 : ALADIN DSS IMAGE @ 21^h 02^m 15.34^s +20° 37' 26.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21023+2037 HDS 2998 : NEIGHBORHOODS

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Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		21023+2037	HDS2998		130	0.1
Show		21014+2043	JNN 289		25	0.4	14
Show		21008+2057	A 176		175	0.3	28
Show		21046+2053	AG 269		172	8.4	37
Show		20598+2004	STF2739		252	3.3	48
Show		21062+2106	TDT2748		44	1.3	62
Show		21026+2141	HO 599	CD	174	18.0	64
Show		21026+2141	BU 69	AB	6	0.4	65
Show		21026+2141	BU 69	AC	241	74.6	65
Show		20579+2009	BRT2486		165	2.9	66
Show		21059+2118	A 178		64	1.0	66
Show		21057+2129	TDT2741		289	0.7	71
Show		20574+2010	HO 640		257	12.5	74
Show		21052+1936	HDS3005		14	0.3	74
Show		21058+1939	J 2702		178	5.4	76
Show		21030+2155	BRT2488		118	2.8	78
Show		20582+1942	TDT2663		36	0.9	80
Show		21005+1920	BU 1497		337	49.3	82
Show		21085+2025	J 574		47	3.1	89
Show		21010+1910	COU 523		139	0.9	90
Show		20565+2118	A 2797		237	0.1	91
Show		20558+2027	J 606		185	2.6	91
Show		21020+2215	TDT2707		293	0.4	98
Show		21093+2029	J 575		181	10.9	99
Show		21057+2207	BRT2490		252	3.1	102
Show		21095+2047	GRV 426		129	37.4	103
Show		20558+2131	COU 727		353	1.1	105
Show		21017+1851	UC 4363		216	6.4	107
Show		20599+2229	J 3121		46	10.1	111
Show		21102+2045	RAO 25		211	3.2	113
Show		20554+1935	UC 4329		262	32.9	115
Show		20578+2214	J 1892	AB	41	10.5	116
Show		20578+2214	HJ 1598	AC	135	9.3	116
Show		21039+1844	BRT2489		246	5.4	116
Show		21093+2140	UC 4391		144	54.8	117
Show		21091+2146	GIC9023		166	1.1	118
Show		21082+2201	UC 4386		123	33.5	118
Show		21091+2149	BRT2491		306	3.3	120
Show		21105+1958	STF2767		28	2.5	123
Show		21041+1837	KPP 546		61	5.1	124
Show		20537+2116	J 2327	BC	175	4.4	126
Show		20537+2116	J 2327	AB	48	68.4	127
Show		20537+2116	KPP3429	AD	9	32.9	127
Show		21079+1851	HO 150		136	3.0	128
Show		21065+2232	AZC 110	AB	135	49.6	129
Show		20577+1846	GWP3022		108	5.7	129
Show		21081+1857	J 3125		259	4.7	131
Show		21082+2220	KPP4224		246	2.0	132
Show		21061+1836	TDS1116		265	1.2	134
Show		21091+1906	COU 329		99	0.6	134
Show		20587+1833	RAO 444		194	1.4	135

WDS 21023+2037 : COMPONENTS

	A
B	pa=132.3° sep=0.10"

21023+2037 A

Componente originario normalizzato	AB	Coord arcsec 2000	210215.34+203726.2	Mag	10.24	Spectral class	K0 (yellow-orange)
PmRA	8.00	PmDE	-16.0	HIP	103817	Tycho2	1656-00167-1
BD	BD+20 4809

Tycho2

Tycho2	1656-00167-1	Pflag		RAmdeg	315.56394542	DEmdeg	20.62388676
PmRA	8.3	PmDE	-15.6	E RAmdeg	19	E DEmdeg	26
E pmRA	1.3	E pmDE	1.3	EpRAm	1987.29	EpDEm	1984.46
Num	8	Q RAmdeg	0.8	Q DEmdeg	1.3	Q pmRA	0.8
Q pmDE	1.3	BTmag	12.080	E BTmag	0.112	VTmag	10.117
E VTmag	0.031	Prox	999	TYC	T	HIP	103817
CCDM	AB	RAdeg	315.56392028	DEdeg	20.62392361	EpRA 1990	1.59
EpDE 1990	1.21	E RAdeg	23.3	E DEdeg	31.5	Posflg	P
Corr	0.0

Hipparcos

Catalog	H	HIP	103817	Proxy	H	RAhms	21 02 15.34
DEdms	+20 37 26.2	Vmag	9.91	VarFlag		R Vmag	H
RAdeg	315.564	DEdeg	20.6239	AstroRef	*	Plx	-1.27
CCDM	21023+2037	N CCDM	H	Nsys	1	Ncomp	2
MultFlag	C	Source	S	Qual	C	M HIP	AB
Theta	173	Rho	0.13	HD		BD	BD+20 4809
CD		CP		Dm number	+20 4809	VIred	1.08
SpType	K0	R SpType		Coord arcsec 2000	210215.34+203726.2

Hipparcos 2

HIP	103817	Sn	55	So	3	Nc	2
RArad	5.5076293929	DErad	0.3599555028	Plx	0.86	PmRA	6.72
PmDE	-16.06	E RArad	1.22	E DErad	0.75	E Plx	1.71
E pmRA	1.42	E pmDE	0.75	Hpmag	10.0812	E Hpmag	0.0022
SHp	0.027	VA	0	BV	1.114	E BV	0.218
VI	1.08

CCDM

Ccdm	21023+2037	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.66	DDEs	26.0
R dRAs	82	Year		Theta		Rho
Obs	2	Vmag	10.2	Sp	K0	PmNote	*
PmRA	8	PmDE	-16	Dm number	+20 4809	Cat1	BD
Name2	+20 2366	Cat2	AGK2/3	HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	103817

21023+2037 B

Componente originario normalizzato	AB		Coord arcsec 2000	210215.35+203726.1		Mag	12.28		Calc delta mag	2.04
Calc coord	yes

CCDM

Ccdm	21023+2037	RComp		Comp	B	Note1
Note2		Discov num	HDS	DRAs	-2.65	DDEs	25.9
R dRAs	82	Year	1991	Theta	173	Rho	0.1
Obs	1	Vmag	12.3	Sp		PmNote	*
PmRA	8	PmDE	-16	Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	103817