21313+2112 GRV 473

21^h 31^m 20.67^s +21° 12' 16.2" P.A. 26.00 sep 46.4 mag 8.58,14.18 Sp Am:

Coord 2000	21313+2112	Discov num	GRV 473	Comp		Coord arcsec 2000	21 31 20.67 +21 12 16.2
Date first	1999	Date last	2015	Obs	5
Pa first	26	Pa last	26.3	P.A. Now (θ)	26.3°
Sep first	46.4	Sep last	46.384	Sep. Now (ρ)	46.384"
Mag pri	8.58	Mag sec	14.18	delta mag (ΔM)	5.6	Spectral class	Am: (white)
Pri motion ra	-011	Sec motion ra	+017
Pri motion dec	-017	Sec motion dec	+009
Notes

rPM=1.887

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation	Pegasus		SAO	89773		Tycho2	1676-00835-1		Gaia DR2	1787782168481703680
HD	204936

WDS 21313+2112 GRV 473 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Grv2004	Eu -	Greaves, J.	2004MNRAS.355..585G
Grv2004		MNRAS 355, 585, 2004
Grv2005a	Es -	Greaves, J.	...................
Grv2005a	+C	Webb Soc., Double Star Circ. 13, 2005 (GRV 973 - 1147)
Grv2005a		(Note: RA for all WDS designations inadvertently truncated to integer minute)
Grv2005b	Pa -	Greaves, J.	...................
Grv2005b		private communication
Grv2005c	C -	Greaves, J.	2005JDSO....1...41G
Grv2005c		JDSO 1, 41, 2005
Grv2006	-	Greaves, J.	...................
Grv2006		private communication, 2006
Grv2006		(measures done using LSPM-north, see Vizier On-line Data Catalog I/298;
Grv2006		Lepine & Shara 2005)
Grv2006b	Es -	Greaves, J.	...................
Grv2006b		private Communication, 2006
Grv2006b		(Reduction of SDSS data. Calculated position is to J2000, but actual observation
Grv2006b		epoch is unknown and proper motion may or may not have been applied.)
Grv2006c	Ey -	Greaves, J.	...................
Grv2006c		private Communication, 2006
Grv2006c		(Reduction of SPM3.3 data. Calculated position is to 1991.25, but actual
Grv2006c		observation epoch is unknown and proper motion may or may not have been applied.)
Grv2008	Es -	Greaves, J.	...................
Grv2008		Webb Soc., Double Star Circ. 16, 2008
Grv2011	C -	Greaves, J.	...................
Grv2011		Webb Soc., Double Star Circ. 19, 2011
Grv2011		These carry a discovery designation of SPM and come from the SPM4 Catalog	2011AJ....142...15G
Grv2019a	Hg u	Greaves, J.	2019JDSO...15...59G
Grv2019a		JDSO 15, 59, 2019
Grv2019b	Hg u	Greaves, J.	2019JDSO...15...77G
Grv2019b		JDSO 15, 59, 2019
Grv2019c	Hg u	Greaves, J.	...................
Grv2019c		private communication, 2019 (17 April 2019 email)
Grv2019d	Hg -	Greaves, J.	.
Grv2019d		private communication, 2019 (4 Nov 2019 email)
Grv2020a	not -	Greaves, J.	.
Grv2020a		private communication, 2020 (14 Mar 2020 email)
Grv2020b	Hg j	Greaves, J.	.
Grv2020b		Webb Soc., Double Star Circ. 28, 23, 2020
Grv2020c	Hg j	Greaves, J.	.
Grv2020c		Webb Soc., Double Star Circ. 28, 35, 2020
Grv2020d	Hg j	Greaves, J.	.
Grv2020d		Webb Soc., Double Star Circ. 28, 39, 2020
Grv2020e	Hg u	Greaves, J.	2020JDSO...16..317G
Grv2020e		JDSO 16, 317, 2020
Grv2020f	Hg	Greaves, J.	2020JDSO...16..362G
Grv2020f		JDSO 16, 362, 2020
Grv2020g	Hg -	Greaves, J.	.
Grv2020g		private communication, 2020 (29 Nov 2020 email)
Grv2020h	Hg -	Greaves, J.	.
Grv2020h		private communication, 2020 (10 Dec 2020 email)
Grv2020i	Hg -	Greaves, J.	.
Grv2020i		private communication, 2020 (12 Dec 2020 email)
Grv2020j	Hg -	Greaves, J.	.
Grv2020j		private communication, 2020 (21 Dec 2020 email)
Grv2021a	not -	Greaves, J.	.
Grv2021a		private communication, 2021 (18 Feb 2021 email)
Grv2021b	not -	Greaves, J.	.
Grv2021b		private communication, 2021 (23 Feb 2021 email)
Grv2021c	Hg+ -	Greaves, J., Rica Romero, F.M. & Otero, S.	2021JDSO...17..137G
Grv2021c	+orb	JDSO 17, 137, 2021
Grv2021d	Hg -	Greaves, J.	.
Grv2021d		private communication, 2021 (23 Aug 2021 email)
Grv2021e	Hg -	Greaves, J.	.
Grv2021e		private communication, 2021 (24 Aug 2021 email)
Grv2022	Hg j	Greaves, J. .
Grv2022		Webb Soc., Double Star Circ. 30, 27, 2022
Grv2023a	Hg -	Greaves, J.	.
Grv2023a		private communication, 2023 (15 Feb 2023 email)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21313+2112	GRV 473		2000	2	26	46.4	8.60	13.90		D	213120.67+211216.2
21313+2112	GRV 473		2001	3	27	46.2	8.60	13.90		D	213120.67+211216.2
21313+2112	GRV 473		2010	3	26	46.3	8.58	14.18	Am:		213120.67+211216.2
21313+2112	GRV 473		2015	4	26	46.4	8.58	14.18	Am:		213120.67+211216.2

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

WDS 21313+2112 GRV 473 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21313+2112 GRV 473 : MEASURES

No records found.

WDS 21313+2112 : VIRTUAL EYEPIECE

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

WDS 21313+2112 : ALADIN DSS IMAGE @ 21^h 31^m 20.67^s +21° 12' 16.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21313+2112 GRV 473 : 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		21313+2112	GRV 473		26	46.4	1
Show		21310+2128	COU 232		34	0.6	17
Show		21326+2048	GMC 21		130	10.5	30
Show		21330+2043	STF2804	AB	359	3.4	38
Show		21330+2043	STF2804	AC	103	97.1	38
Show		21352+2124	BU 74		338	1.0	56
Show		21287+2028	J 611		21	1.8	58
Show		21334+2018	J 613		222	5.1	63
Show		21290+2211	HJ 1647	AB	178	41.5	68
Show		21290+2211	HJ 1647	AC	128	38.8	68
Show		21286+2211	BRT2496	AB	236	4.6	71
Show		21286+2211	FYM 288	AC	60	15.2	71
Show		21269+2033	GRV 469		264	21.2	72
Show		21283+2215	J 3140		223	5.9	77
Show		21257+2058	J 3138		256	3.1	80
Show		21267+2027	UC 4468		334	43.8	81
Show		21261+2201	OCC9222		308	9.0	89
Show		21347+1953	TDT3040		23	0.9	92
Show		21379+2102	YR 30		340	0.1	93
Show		21247+2116	HU 370		105	2.1	94
Show		21259+2017	CVR 901		143	28.8	95
Show		21282+1943	UC 4474		276	9.5	100
Show		21307+2258	COU 134		13	1.5	106
Show		21259+2229	TDT2960		189	0.9	109
Show		21235+2125	SKF 15		262	40.2	110
Show		21373+2230	CVR 911		174	10.5	114
Show		21234+2139	J 2345		202	4.6	114
Show		21391+2036	STT 444		277	8.0	115
Show		21393+2043	STT 445		120	1.0	116
Show		21284+1924	CVR 247		263	79.8	117
Show		21248+1956	KPP3370		333	0.9	120
Show		21349+1923	TDT3041		350	0.8	121
Show		21237+2016	COU 230		187	0.9	122
Show		21397+2041	GMC 23		342	10.5	122
Show		21293+2311	J 1896		109	7.1	123
Show		21310+2320	LAF 65	AB	320	9.2	128
Show		21310+2320	LAF 65	AC	178	11.8	128
Show		21224+2146	GRV 457		323	77.2	130
Show		21288+2317	J 1895		112	6.5	130
Show		21290+1906	J 579		182	3.7	131
Show		21240+2236	KU 60		228	7.3	133
Show		21408+2140	LDS4903		100	81.0	136
Show		21399+2005	UC 4521		35	12.3	138
Show		21362+1912	TDT3052		197	1.7	139
Show		21368+1915	BRT2498		268	5.0	140
Show		21260+2316	GRV 466		318	40.0	145
Show		21417+2100	UC 4531		213	69.8	146
Show		21323+1848	BRT2497		187	1.8	146
Show		21279+2330	POU5375		94	13.1	146
Show		21326+2339	POU5403		129	5.2	148
Show		21299+2338	BU 685		325	30.4	148

WDS 21313+2112 : COMPONENTS

	A
B	pa=24.7° sep=45.78"

21313+2112 A

Componente originario normalizzato	AB	Coord arcsec 2000	213120.67+211216.2	Mag	8.58	Spectral class	Am: (white)
PmRA	-11.00	PmDE	-17.0	SAO	89773	Tycho2	1676-00835-1
HD	204936	DM	BD+20 4947

Tycho2

Tycho2	1676-00835-1	Pflag		RAmdeg	322.83608077	DEmdeg	21.20448966
PmRA	-11.7	PmDE	-16.9	E RAmdeg	6	E DEmdeg	7
E pmRA	1.1	E pmDE	1.0	EpRAm	1991.29	EpDEm	1991.06
Num	9	Q RAmdeg	0.5	Q DEmdeg	0.6	Q pmRA	0.6
Q pmDE	0.6	BTmag	8.978	E BTmag	0.017	VTmag	8.578
E VTmag	0.012	Prox	999	TYC	T	HIP
CCDM		RAdeg	322.83610972	DEdeg	21.20452806	EpRA 1990	1.80
EpDE 1990	1.84	E RAdeg	6.1	E DEdeg	6.5	Posflg
Corr	-0.2

SAO

SAO	89773	DelFlag		RA1950		PmRA1950	-0.0015
DE1950		PmDE1950	-0.013	Vmag	8.4	SpType	A2
Double code		Source	35	CatNum	8263	DM	BD+20 4947
DMcomp		BDsup		HD	204936	M HD	0
GC		RA1950rad	5.62451093	DE1950rad	0.36623467	PmRA2000	-0.0015
PmDE2000	-0.017

21313+2112 B

Componente originario normalizzato	AB		Coord arcsec 2000	213122.04+211257.8		Mag	14.18		PmRA	17.00
PmDE	9.0		Calc delta mag	5.6		Calc coord	yes