20470+4335 GRV 380 AB

20^h 47^m 02.90^s +43° 35' 57.2" P.A. 16.00 sep 21.4 mag 13.03,13.65

Coord 2000	20470+4335	Discov num	GRV 380	Comp	AB	Coord arcsec 2000	20 47 02.90 +43 35 57.2
Date first	2000	Date last	2015	Obs	6
Pa first	16	Pa last	15.6	P.A. Now (θ)	15.6°
Sep first	21.4	Sep last	21.414	Sep. Now (ρ)	21.414"
Mag pri	13.03	Mag sec	13.65	delta mag (ΔM)	0.62	Spectral class
Pri motion ra	-007	Sec motion ra	+006
Pri motion dec	-013	Sec motion dec	-015
Notes

rPM=0.814

This double is not physical.

20470+4335 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 47 03 +43 35 57	GRV 380 AB	2015	6	16	21.4	13.03	13.65	0.62		<===
Show			20 47 03 +43 35 57	GRV 380 AC	2015	6	312	44.6	13.03	13.60	0.57

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Gaia DR2

2066935728252178048

WDS 20470+4335 GRV 380 AB : 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
20470+4335	GRV 380	AB	2000	1	16	21.4	12.80	13.10			204702.90+433557.2
20470+4335	GRV 380	AB	2002	3	16	21.4	12.80	13.10			204702.90+433557.2
20470+4335	GRV 380	AB	2015	3	16	21.4	13.03	13.65			204702.90+433557.2

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

WDS 20470+4335 GRV 380 AB : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20470+4335 GRV 380 AB : MEASURES

No records found.

WDS 20470+4335 : VIRTUAL EYEPIECE

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

WDS 20470+4335 : ALADIN DSS IMAGE @ 20^h 47^m 02.90^s +43° 35' 57.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20470+4335 GRV 380 AB : 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		20470+4335	GRV 380	AB	16	21.4
Show		20470+4335	GRV 380	AC	312	44.6
Show		20473+4345	COU2425		58	0.2	10
Show		20476+4347	CHN 28		57	5.0	14
Show		20455+4338	A 611		176	0.3	18
Show		20452+4337	ES 1449		57	6.7	20
Show		20461+4353	GRV 378		135	35.3	21
Show		20474+4314	TDT2539		77	0.5	23
Show		20449+4332	ES 1448		142	2.0	24
Show		20461+4410	BRT2275		10	2.8	36
Show		20437+4318	ES 1447		308	2.4	41
Show		20501+4404	STT 595	AB	48	55.4	43
Show		20501+4404	STG 9	AC	83	102.7	43
Show		20501+4404	FYM 92	AD	242	51.8	43
Show		20501+4404	FYM 92	AE	190	35.2	43
Show		20501+4404	FYM 92	AF	80	46.9	43
Show		20472+4427	COU2424		255	0.5	52
Show		20429+4311	ES 1446		134	4.5	52
Show		20517+4317	LDS2461		217	32.6	54
Show		20520+4346	STT 416	AB	117	9.6	55
Show		20520+4346	SKF2740	BC	192	73.4	55
Show		20449+4425	ES 1332		325	7.0	55
Show		20506+4421	CHN 29		52	5.3	60
Show		20519+4309	GRV 389		190	61.9	60
Show		20512+4415	CHN 31		47	6.7	60
Show		20415+4336	BVD 270		76	26.0	61
Show		20416+4350	ES 1445		180	6.2	61
Show		20509+4421	CHN 30	AB	92	2.7	62
Show		20509+4421	CHN 30	Aa,Ab	108	0.6	62
Show		20524+4314	LDS2462		265	39.5	63
Show		20413+4314	BRT2270		207	4.4	67
Show		20432+4431	COU2422		236	1.3	70
Show		20535+4328	LDS2465		41	12.1	70
Show		20508+4238	LDS2457		106	5.1	71
Show		20407+4321	STF2719		142	14.2	71
Show		20472+4225	STT 414	AB	95	9.9	72
Show		20472+4225	BOT 4	AC	16	104.9	72
Show		20405+4343	COU2540		117	0.4	72
Show		20404+4345	GII 99		220	3.6	73
Show		20459+4448	ES 2701		81	50.9	74
Show		20530+4258	COU2542		199	0.1	75
Show		20513+4238	A 614		333	1.5	75
Show		20416+4424	COU2541		25	0.4	76
Show		20461+4452	ES 30		57	17.1	77
Show		20425+4235	GRV 369		26	24.8	79
Show		20525+4430	BRT2279		5	4.5	80
Show		20494+4452	TDS1103		200	0.8	81
Show		20521+4438	HER 18		85	60.7	82
Show		20400+4405	KPP2366		145	20.3	82
Show		20532+4423	LSC 94		183	0.3	82
Show		20511+4224	BRT2277		230	4.2	85

WDS 20470+4335 : COMPONENTS

	A	B
B	pa=11.4° sep=21.04"
C	pa=320.9° sep=38.26"	pa=287.8° sep=29.72"

20470+4335 A

Coord arcsec 2000

204702.90+433557.2

Mag

13.03

PmRA

-7.00

PmDE

-13.0

20470+4335 B

Coord arcsec 2000	204703.28+433617.8		Mag	13.65		PmRA	6.00		PmDE	-15.0
Calc delta mag	0.62		Calc coord	yes

20470+4335 C

Coord arcsec 2000	204700.68+433626.9		Mag	13.6		PmRA	5.00		PmDE	-5.0
Calc delta mag	0.57		Calc coord	yes