21450+3942 GRV 499

21^h 45^m 01.82^s +39° 42' 43.4" P.A. 170.00 sep 67.4 mag 10.32,13.84

Coord 2000	21450+3942	Discov num	GRV 499	Comp		Coord arcsec 2000	21 45 01.82 +39 42 43.4
Date first	2000	Date last	2015	Obs	7
Pa first	170	Pa last	170.2	P.A. Now (θ)	170.2°
Sep first	67.5	Sep last	67.389	Sep. Now (ρ)	67.389"
Mag pri	10.32	Mag sec	13.84	delta mag (ΔM)	3.52	Spectral class
Pri motion ra	-010	Sec motion ra	-014
Pri motion dec	-013	Sec motion dec	-012
Notes

rPM=0.224 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3188-01727-1

Gaia DR2

1954111889484994688

WDS 21450+3942 GRV 499 : 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
21450+3942	GRV 499		2000	2	170	67.5	10.30	13.40		D	214501.82+394243.4
21450+3942	GRV 499		2002	3	170	67.4	10.30	13.40		D	214501.82+394243.4
21450+3942	GRV 499		2010	3	170	67.4	10.32	13.84			214501.82+394243.4
21450+3942	GRV 499		2015	4	170	67.4	10.32	13.84			214501.82+394243.4

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

WDS 21450+3942 GRV 499 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21450+3942 GRV 499 : MEASURES

No records found.

WDS 21450+3942 : VIRTUAL EYEPIECE

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

WDS 21450+3942 : ALADIN DSS IMAGE @ 21^h 45^m 01.82^s +39° 42' 43.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21450+3942 GRV 499 : 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		21450+3942	GRV 499		170	67.4
Show		21458+3945	MLB 902		327	5.6	6
Show		21459+3943	SEI1535		229	8.5	11
Show		21445+3933	A 1447		243	0.4	13
Show		21454+3955	SEI1534		189	27.8	13
Show		21431+4021	TDT3121		157	1.7	45
Show		21413+3928	BU 274		180	3.7	46
Show		21429+3904	GRV 496		72	29.9	46
Show		21481+3911	TDT3162		146	2.0	48
Show		21458+4029	ES 1693		34	7.4	48
Show		21453+3853	TDT3139		65	0.5	50
Show		21493+3937	SEI1536		147	28.1	50
Show		21487+3914	TDS1147		26	1.0	52
Show		21417+4022	TDT3111		296	2.7	55
Show		21490+3912	TDT3173		137	0.6	55
Show		21464+3847	MLB 961		4	6.5	59
Show		21399+3941	A 1446		40	1.3	60
Show		21399+3931	A 1445	AB	283	1.5	61
Show		21399+3931	HJ 1675	AC	264	37.9	61
Show		21397+3934	TDT3090		171	0.7	63
Show		21400+3919	ALI 978		14	13.3	63
Show		21505+3944	ES 211	AB	197	2.5	63
Show		21505+3944	ES 211	AC	178	10.1	63
Show		21505+3944	ES 211	AD	102	21.1	63
Show		21421+3848	ALI 980		139	8.9	65
Show		21504+3927	HO 170		256	0.3	65
Show		21408+4027	TDT3102		25	1.4	66
Show		21393+3948	KPP4241		95	4.0	66
Show		21403+3858	MLB 787		351	5.4	71
Show		21512+3941	TDT3192		118	0.5	72
Show		21492+3849	TDT3176		1	2.3	73
Show		21509+3918	MLB 788		52	4.9	73
Show		21513+3938	TDT3196		234	2.1	73
Show		21506+4017	SEI1539		260	27.0	73
Show		21498+4033	TDT3183		55	0.8	75
Show		21385+3942	MLB 786		209	5.3	75
Show		21387+3924	TDT3080		245	2.7	76
Show		21416+4048	S 796	AB	233	58.2	77
Show		21416+4048	S 796	AC	282	132.4	77
Show		21416+4048	FYM 112	AD	163	70.0	77
Show		21416+4048	FYM 112	AE	143	73.8	77
Show		21416+4048	FYM 112	AF	305	55.0	77
Show		21403+3843	ALI 979		5	9.8	81
Show		21383+3917	GRV 488		19	59.8	81
Show		21422+4057	DAM 231		292	8.9	82
Show		21436+3822	ES 2522		101	4.0	83
Show		21419+4058	MLB 30		228	9.1	84
Show		21426+4103	BU 688	AB	198	0.4	85
Show		21426+4103	FOX9036	AB,D	306	46.7	85
Show		21426+4103	BU 688	AB,C	30	27.0	85
Show		21506+3847	MLB 962		322	4.4	86

WDS 21450+3942 : COMPONENTS

	A
B	pa=172.4° sep=66.99"

21450+3942 A

Componente originario normalizzato	AB		Coord arcsec 2000	214501.82+394243.4		Mag	10.32		PmRA	-10.00
PmDE	-13.0		Tycho2	3188-01727-1

Tycho2

Tycho2	3188-01727-1	Pflag		RAmdeg	326.25757511	DEmdeg	39.71205950
PmRA	-9.7	PmDE	-14.7	E RAmdeg	18	E DEmdeg	17
E pmRA	1.4	E pmDE	1.4	EpRAm	1989.08	EpDEm	1989.57
Num	5	Q RAmdeg	1.2	Q DEmdeg	0.8	Q pmRA	1.2
Q pmDE	0.8	BTmag	10.632	E BTmag	0.031	VTmag	10.316
E VTmag	0.030	Prox	999	TYC	T	HIP
CCDM		RAdeg	326.25760472	DEdeg	39.71209250	EpRA 1990	1.62
EpDE 1990	1.67	E RAdeg	19.0	E DEdeg	17.5	Posflg
Corr	0.2

21450+3942 B

Componente originario normalizzato	AB		Coord arcsec 2000	214502.58+394137.0		Mag	13.84		PmRA	-14.00
PmDE	-12.0		Calc delta mag	3.52		Calc coord	yes