21374+3810 GRV 487

21^h 37^m 24.27^s +38° 10' 03.1" P.A. 201.00 sep 74.8 mag 12.07,13.24

Coord 2000	21374+3810	Discov num	GRV 487	Comp		Coord arcsec 2000	21 37 24.27 +38 10 03.1
Date first	2000	Date last	2015	Obs	7
Pa first	201	Pa last	200.5	P.A. Now (θ)	200.5°
Sep first	74.8	Sep last	74.795	Sep. Now (ρ)	74.795"
Mag pri	12.07	Mag sec	13.24	delta mag (ΔM)	1.17	Spectral class
Pri motion ra	-014	Sec motion ra	-012
Pri motion dec	-016	Sec motion dec	-013
Notes

rPM=0.17 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3183-01656-1

Gaia DR2

1953726785541950848

WDS 21374+3810 GRV 487 : 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
21374+3810	GRV 487		2000	2	201	74.8	11.70	12.80		D	213724.27+381003.1
21374+3810	GRV 487		2002	3	201	74.9	11.70	12.80		D	213724.27+381003.1
21374+3810	GRV 487		2010	3	201	74.9	12.07	13.24			213724.27+381003.1
21374+3810	GRV 487		2015	4	201	74.8	12.07	13.24			213724.27+381003.1

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

WDS 21374+3810 GRV 487 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21374+3810 GRV 487 : MEASURES

No records found.

WDS 21374+3810 : VIRTUAL EYEPIECE

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

WDS 21374+3810 : ALADIN DSS IMAGE @ 21^h 37^m 24.27^s +38° 10' 03.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21374+3810 GRV 487 : 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		21374+3810	GRV 487		201	74.8
Show		21384+3808	TDT3073		334	1.1	13
Show		21360+3803	GRV 483		237	21.8	18
Show		21386+3822	TDT3078		157	0.7	19
Show		21358+3755	GRV 482		188	49.3	24
Show		21351+3807	SRW 10	AB	314	19.5	27
Show		21351+3807	SRW 10	AC	11	19.6	27
Show		21378+3739	SEI1527	AB	332	25.5	32
Show		21378+3739	MBR 1	AC	89	14.5	32
Show		21399+3813	ES 2066		224	5.4	32
Show		21354+3837	ES 1995		39	2.3	34
Show		21398+3749	A 1444		82	1.1	36
Show		21348+3832	DEA 61		195	66.9	38
Show		21352+3839	ES 2713		98	17.7	39
Show		21408+3806	TDS1140		191	1.0	41
Show		21387+3848	ALI 977		221	11.6	41
Show		21403+3843	ALI 979		5	9.8	48
Show		21415+3817	SEI1532		139	5.1	49
Show		21340+3844	COU1976		30	0.4	52
Show		21412+3735	TDT3109		59	0.6	57
Show		21383+3906	ALI 976		173	12.8	58
Show		21376+3712	ES 2065		4	3.9	59
Show		21403+3858	MLB 787		351	5.4	60
Show		21337+3728	SEI1526		160	25.3	61
Show		21377+3911	ALI 975		153	12.8	61
Show		21323+3811	ES 2063		227	2.7	62
Show		21348+3903	LEP 101		168	19.9	62
Show		21329+3843	KPP4236		205	1.8	62
Show		21405+3720	ES 2067		227	6.8	63
Show		21371+3915	GRV 485		74	19.6	66
Show		21322+3835	TDT3017		267	0.8	66
Show		21323+3839	ALI 974		210	10.6	67
Show		21421+3848	ALI 980		139	8.9	67
Show		21321+3834	ES 2064		244	11.5	68
Show		21331+3726	SEI1525		100	15.0	68
Show		21432+3815	DAM 232		299	8.3	69
Show		21383+3917	GRV 488		19	59.8	69
Show		21432+3801	HDS3094	Aa,Ab	245	0.1	70
Show		21432+3801	BLL 55	AB	117	142.4	70
Show		21336+3905	COU1975	AB	359	21.4	71
Show		21336+3905	COU1975	Aa,Ab	331	0.3	71
Show		21324+3849	MLB1029	AB	204	5.9	71
Show		21324+3849	DAM 326	AC	315	13.4	71
Show		21324+3849	MLB1029	AD	290	29.1	71
Show		21434+3817	KUI 109	Aa,Ab	142	1.9	72
Show		21434+3817	S 799	AB	60	149.5	72
Show		21434+3817	S 799	AC	318	135.3	72
Show		21436+3822	ES 2522		101	4.0	73
Show		21322+3850	ES 259		319	3.9	73
Show		21434+3817	S 799	BD	254	34.0	74
Show		21328+3901	MLB 989		162	3.2	74

WDS 21374+3810 : COMPONENTS

	A
B	pa=196.4° sep=73.02"

21374+3810 A

Componente originario normalizzato	AB		Coord arcsec 2000	213724.27+381003.1		Mag	12.07		PmRA	-14.00
PmDE	-16.0		Tycho2	3183-01656-1

Tycho2

Tycho2	3183-01656-1	Pflag		RAmdeg	324.35108587	DEmdeg	38.16755162
PmRA	-13.0	PmDE	-14.6	E RAmdeg	75	E DEmdeg	64
E pmRA	2.8	E pmDE	2.5	EpRAm	1980.92	EpDEm	1981.93
Num	4	Q RAmdeg	0.4	Q DEmdeg	0.7	Q pmRA	0.4
Q pmDE	0.7	BTmag	13.212	E BTmag	0.236	VTmag	12.120
E VTmag	0.139	Prox	676	TYC		HIP
CCDM		RAdeg	324.35112417	DEdeg	38.16758361	EpRA 1990	1.61
EpDE 1990	1.69	E RAdeg	81.3	E DEdeg	68.7	Posflg
Corr	0.1

21374+3810 B

Componente originario normalizzato	AB		Coord arcsec 2000	213722.52+380853.0		Mag	13.24		PmRA	-12.00
PmDE	-13.0		Calc delta mag	1.17		Calc coord	yes