21487+4357 GRV 509

21^h 48^m 44.75^s +43° 57' 54.4" P.A. 177.00 sep 56.4 mag 9.67,13.79 Sp F8

Coord 2000	21487+4357	Discov num	GRV 509	Comp		Coord arcsec 2000	21 48 44.75 +43 57 54.4
Date first	2000	Date last	2015	Obs	7
Pa first	178	Pa last	177.1	P.A. Now (θ)	177.1°
Sep first	56.5	Sep last	56.418	Sep. Now (ρ)	56.418"
Mag pri	9.67	Mag sec	13.79	delta mag (ΔM)	4.12	Spectral class	F8 (yellow-white)
Pri motion ra	-031	Sec motion ra	-006
Pri motion dec	-019	Sec motion dec	-014
Notes

rPM=0.701

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3196-00044-1

Gaia DR2

1973036614910858624

WDS 21487+4357 GRV 509 : 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
21487+4357	GRV 509		2000	2	178	56.5	9.50	13.60		D	214844.75+435754.4
21487+4357	GRV 509		2002	3	177	56.5	9.50	13.60		D	214844.75+435754.4
21487+4357	GRV 509		2010	3	177	56.3	9.67	13.79	F8		214844.75+435754.4
21487+4357	GRV 509		2015	4	177	56.4	9.67	13.79	F8		214844.75+435754.4

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

WDS 21487+4357 GRV 509 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21487+4357 GRV 509 : MEASURES

No records found.

WDS 21487+4357 : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 21487+4357 : ALADIN DSS IMAGE @ 21^h 48^m 44.75^s +43° 57' 54.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21487+4357 GRV 509 : 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		21487+4357	GRV 509		177	56.4
Show		21489+4349	TDT3170		94	1.4	9
Show		21502+4356	TDS1148		97	1.1	16
Show		21509+4419	HJ 1700		197	9.7	31
Show		21492+4326	PKO 17		149	13.6	33
Show		21490+4323	PKO 16		96	5.9	36
Show		21454+4356	HO 168	AB	42	0.8	37
Show		21454+4356	HO 168	AC	267	18.7	37
Show		21454+4356	HO 168	AD	21	28.3	37
Show		21454+4356	HO 168	AE	22	28.3	37
Show		21489+4321	TDT3171		286	0.5	37
Show		21513+4428	TDT3195		203	1.9	41
Show		21490+4316	BRT1152		231	6.7	43
Show		21525+4332	TDT3212		39	1.7	49
Show		21448+4425	COU2234		84	0.1	50
Show		21531+4339	TDT3215		110	0.8	51
Show		21452+4432	GRV 500		348	59.6	52
Show		21519+4441	TDT3200		210	0.5	56
Show		21521+4313	TDT3204		30	0.9	58
Show		21532+4324	GRV 517		212	45.9	60
Show		21434+4417	HJ 1685		239	18.6	61
Show		21545+4403	A 620		285	0.4	63
Show		21545+4405	TDT3229		324	0.5	63
Show		21490+4254	TDT3172		164	0.4	64
Show		21474+4256	A 405		277	1.9	64
Show		21513+4456	COU2318		109	0.7	65
Show		21550+4404	BRT1153		66	4.8	69
Show		21462+4254	COU1979		261	0.4	70
Show		21454+4258	ES 1459		282	2.3	70
Show		21553+4413	BRT1154	AB	292	5.3	73
Show		21553+4413	WSI 34	AC	346	9.1	73
Show		21421+4414	A 403		74	0.6	73
Show		21460+4506	HJ 1689		57	9.8	75
Show		21435+4448	LIN 1	Aa,Ab	187	0.2	77
Show		21435+4448	HO 167	AB	205	1.3	77
Show		21491+4242	ARG 95		338	23.1	77
Show		21448+4254	TDT3132		293	2.0	78
Show		21541+4307	POP 184		241	11.6	78
Show		21443+4256	TDT3129		76	0.9	79
Show		21422+4434	ES 1341	AB	280	5.9	80
Show		21422+4434	ES 1341	AC	327	33.5	80
Show		21462+4239	ES 1460	AB	8	1.8	82
Show		21462+4239	ES 1460	AC	238	20.3	82
Show		21548+4310	TDT3234		343	2.0	82
Show		21539+4256	ES 1461		352	6.1	84
Show		21427+4303	TDT3117		163	0.8	86
Show		21526+4513	ES 522		138	3.1	87
Show		21429+4507	COU2314		38	0.3	94
Show		21400+4348	TDT3097		253	0.4	95
Show		21439+4517	TDT3123		242	1.5	95
Show		21443+4234	OSO 156	AB	331	7.6	97

WDS 21487+4357 : COMPONENTS

	A
B	pa=177.9° sep=56.38"

21487+4357 A

Componente originario normalizzato	AB		Coord arcsec 2000	214844.75+435754.4		Mag	9.67		Spectral class	F8 (yellow-white)
PmRA	-31.00		PmDE	-19.0		Tycho2	3196-00044-1

Tycho2

Tycho2	3196-00044-1	Pflag		RAmdeg	327.18645186	DEmdeg	43.96511152
PmRA	-31.6	PmDE	-17.4	E RAmdeg	14	E DEmdeg	13
E pmRA	1.1	E pmDE	1.1	EpRAm	1988.75	EpDEm	1989.27
Num	7	Q RAmdeg	0.9	Q DEmdeg	0.9	Q pmRA	0.8
Q pmDE	0.9	BTmag	10.281	E BTmag	0.027	VTmag	9.668
E VTmag	0.023	Prox	999	TYC	T	HIP
CCDM		RAdeg	327.18655472	DEdeg	43.96515028	EpRA 1990	1.55
EpDE 1990	1.67	E RAdeg	15.3	E DEdeg	13.6	Posflg
Corr	0.2

21487+4357 B

Componente originario normalizzato	AB		Coord arcsec 2000	214844.94+435658.1		Mag	13.79		PmRA	-6.00
PmDE	-14.0		Calc delta mag	4.12		Calc coord	yes