21331+4047 GRV 477

21^h 33^m 10.34^s +40° 47' 52.2" P.A. 316.00 sep 21.5 mag 11.20,12.30

Coord 2000	21331+4047	Discov num	GRV 477	Comp		Coord arcsec 2000	21 33 10.34 +40 47 52.2
Date first	2002	Date last	2016	Obs	8
Pa first	316	Pa last	315.7	P.A. Now (θ)	315.7°
Sep first	21.5	Sep last	21.466	Sep. Now (ρ)	21.466"
Mag pri	11.20	Mag sec	12.30	delta mag (ΔM)	1.1	Spectral class
Pri motion ra	-029	Sec motion ra	-029
Pri motion dec	-036	Sec motion dec	-036
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3187-00969-1

Gaia DR2

1966275408671582720

WDS 21331+4047 GRV 477 : 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
21331+4047	GRV 477		2000	1	316	21.5	11.20	12.30			213310.34+404752.2
21331+4047	GRV 477		2002	2	316	21.5	11.20	12.30			213310.34+404752.2
21331+4047	GRV 477		2010	2	316	21.5	11.20	12.30			213310.34+404752.2
21331+4047	GRV 477		2015	3	316	21.5	11.20	12.30			213310.34+404752.2
21331+4047	GRV 477		2016	8	316	21.5	11.20	12.30			213310.34+404752.2

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

WDS 21331+4047 GRV 477 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21331+4047 GRV 477 : MEASURES

No records found.

WDS 21331+4047 : VIRTUAL EYEPIECE

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

WDS 21331+4047 : ALADIN DSS IMAGE @ 21^h 33^m 10.34^s +40° 47' 52.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21331+4047 GRV 477 : 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		21331+4047	GRV 477		316	21.5
Show		21346+4024	MLB 27	CD	253	6.5	30
Show		21346+4024	MLB 27	AB	325	16.9	30
Show		21346+4024	MLB 27	AC	277	19.3	30
Show		21361+4048	TDT3051		275	0.6	34
Show		21302+4044	MLB 26		70	5.0	34
Show		21330+4127	TDT3025		55	0.5	40
Show		21365+4105	TDT3055		247	0.5	42
Show		21312+4013	MLB 897		23	4.9	42
Show		21308+4013	MLB 896	AB	340	3.1	44
Show		21308+4013	MLB 896	AC	69	29.0	44
Show		21316+4005	MLB 898		251	6.7	46
Show		21324+4002	HO 162		330	3.5	47
Show		21332+4001	MLB 990		231	4.1	48
Show		21314+4004	HO 161		15	2.9	49
Show		21354+4128	GRV 480		17	15.1	49
Show		21369+4025	DRS 20		58	7.0	49
Show		21330+4139	TDT3024		316	0.5	51
Show		21363+4012	AG 273		3	8.9	51
Show		21351+4000	MLB 901		233	5.8	53
Show		21286+4102	UC 262		199	48.3	54
Show		21335+3951	TDT3030		176	0.8	57
Show		21363+4002	MLB 28		256	4.3	58
Show		21298+4005	TDT2995		137	2.3	58
Show		21299+4001	MLB 960		335	4.7	60
Show		21279+4046	TDT2979		135	0.4	60
Show		21327+3948	HO 604		316	5.3	61
Show		21321+3949	COU1974		136	0.2	61
Show		21281+4110	COU2231		35	0.1	62
Show		21336+3943	TDT3031		296	0.6	66
Show		21302+4143	COU1973		194	0.8	66
Show		21333+3940	MLB 900		279	6.8	69
Show		21340+4156	J 3142		57	5.8	69
Show		21322+4155	TDT3016		356	0.6	69
Show		21331+3938	MLB 899	AB	51	3.2	70
Show		21331+3938	MLB 899	AC	142	27.9	70
Show		21396+4049	MLB 29		340	6.8	73
Show		21373+4145	GRV 486		348	28.0	75
Show		21300+3941	KPP 495		150	3.9	77
Show		21353+3935	ALI1163		342	7.1	78
Show		21371+3942	TDT3063		159	0.6	80
Show		21336+4209	KPP4237		146	25.1	82
Show		21289+3941	MLB 986		58	4.5	83
Show		21294+3936	TDT2991		170	0.8	85
Show		21380+4153	A 402		47	0.8	85
Show		21257+4043	COU2306		18	0.7	85
Show		21275+3954	MLB 984		94	5.2	85
Show		21260+4112	HDS3052		260	0.2	85
Show		21361+4206	TDT3050		310	0.7	85
Show		21291+4202	TDT2987		37	0.5	87
Show		21299+3928	MLB 987		263	7.0	88

WDS 21331+4047 : COMPONENTS

	A
B	pa=323.5° sep=19.10"

21331+4047 A

Componente originario normalizzato	AB		Coord arcsec 2000	213310.34+404752.2		Mag	11.2		PmRA	-29.00
PmDE	-36.0		Tycho2	3187-00969-1

Tycho2

Tycho2	3187-00969-1	Pflag		RAmdeg	323.29306821	DEmdeg	40.79779440
PmRA	-28.0	PmDE	-37.4	E RAmdeg	49	E DEmdeg	49
E pmRA	1.8	E pmDE	1.7	EpRAm	1983.55	EpDEm	1982.46
Num	3	Q RAmdeg	1.9	Q DEmdeg	0.7	Q pmRA	1.9
Q pmDE	0.7	BTmag	11.765	E BTmag	0.080	VTmag	11.079
E VTmag	0.076	Prox	981	TYC	T	HIP
CCDM		RAdeg	323.29315389	DEdeg	40.79788139	EpRA 1990	1.69
EpDE 1990	1.62	E RAdeg	50.7	E DEdeg	50.6	Posflg
Corr	0.1

21331+4047 B

Componente originario normalizzato	AB		Coord arcsec 2000	213309.34+404807.6		Mag	12.3		PmRA	-29.00
PmDE	-36.0		Calc delta mag	1.1		Calc coord	yes