20346+3334 GRV 356 AB

20^h 34^m 40.06^s +33° 34' 37.0" P.A. 26.00 sep 44.7 mag 12.83,13.63

Coord 2000	20346+3334	Discov num	GRV 356	Comp	AB	Coord arcsec 2000	20 34 40.06 +33 34 37.0
Date first	1999	Date last	2015	Obs	7
Pa first	26	Pa last	26.2	P.A. Now (θ)	26.2°
Sep first	44.9	Sep last	44.675	Sep. Now (ρ)	44.675"
Mag pri	12.83	Mag sec	13.63	delta mag (ΔM)	0.8	Spectral class
Pri motion ra	-012	Sec motion ra	-022
Pri motion dec	-010	Sec motion dec	-019
Notes	N (See Notes)

rPM=0.463

Nature of this double is uncertain.

20346+3334 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 34 40 +33 34 37	GRV 356 AB	2015	7	26	44.7	12.83	13.63	0.80		<===
Show			20 34 40 +33 34 37	GRV 356 AC	2015	7	154	47.0	12.83	14.22	1.39

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

2690-00789-1

Gaia DR2

1864209256099762432

WDS 20346+3334 GRV 356 AB : NOTES

discov_num	notes	refcode
GRV 356	AC: Also known as GRV 355AB.

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
20346+3334	GRV 356	AB	2000	2	26	44.8	12.60	13.30		N D	203440.06+333437.0
20346+3334	GRV 356	AB	2002	3	26	44.8	12.60	13.30		N D	203440.06+333437.0
20346+3334	GRV 356	AB	2015	3	26	44.6	12.83	13.63		N	203440.06+333437.0

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

WDS 20346+3334 GRV 356 AB : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20346+3334 GRV 356 AB : MEASURES

No records found.

WDS 20346+3334 : VIRTUAL EYEPIECE

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

WDS 20346+3334 : ALADIN DSS IMAGE @ 20^h 34^m 40.06^s +33° 34' 37.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20346+3334 GRV 356 AB : 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		20346+3334	GRV 356	AB	26	44.7
Show		20346+3334	GRV 356	AC	154	47.0
Show		20344+3328	HEI 181		4	4.1	8
Show		20338+3336	HJ 1538		122	5.5	12
Show		20341+3344	TDT2381		156	1.9	12
Show		20350+3323	HJ 1543		26	16.5	13
Show		20359+3331	ES 2355		350	1.8	17
Show		20333+3323	HJ 1535	AB	246	17.2	21
Show		20333+3323	HJ 1535	AC	194	31.9	21
Show		20333+3323	HJ 1535	AD	230	59.1	21
Show		20333+3323	RAO 71	AE	225	12.5	21
Show		20333+3323	RBR 30	Ba,Bb	308	0.2	21
Show		20332+3324	SEI1162		90	20.2	22
Show		20353+3313	GRV 359		191	73.4	23
Show		20349+3358	SEI1173		295	4.6	24
Show		20338+3312	J 190	AB	337	3.1	26
Show		20338+3312	J 190	AC	105	9.1	26
Show		20359+3356	GRV 360		97	16.3	27
Show		20369+3321	TDT2423		183	0.5	32
Show		20354+3301	KPP2661		306	24.9	36
Show		20350+3259	HJ 1542		230	16.1	36
Show		20339+3258	GYL 36		152	20.9	39
Show		20377+3322	STF2705	AB	264	3.1	41
Show		20377+3322	STF2705	AC	341	183.4	41
Show		20377+3322	STF2705	AD	3	54.5	41
Show		20377+3322	STF2705	AE	42	74.2	41
Show		20315+3347	LAF 62	AB	341	2.0	41
Show		20315+3347	LAF 62	AC	51	2.4	41
Show		20315+3347	LAF 62	AD	289	3.8	41
Show		20315+3347	LAF 62	AE	138	3.8	41
Show		20315+3347	LAF 62	AF	19	3.9	41
Show		20315+3347	LAF 62	AG	202	4.4	41
Show		20315+3347	LAF 62	AH	300	5.6	41
Show		20315+3347	LAF 62	AI	50	6.0	41
Show		20315+3347	LAF 62	AJ	233	6.6	41
Show		20315+3347	LAF 62	AK	156	6.7	41
Show		20315+3347	LAF 62	AL	255	6.7	41
Show		20315+3347	LAF 62	AM	10	8.0	41
Show		20315+3347	LAF 62	AN	144	8.3	41
Show		20315+3347	LAF 62	AO	72	8.3	41
Show		20315+3347	LAF 62	AP	156	8.4	41
Show		20315+3347	LAF 62	AQ	177	8.9	41
Show		20315+3347	LAF 62	AR	11	9.3	41
Show		20315+3347	LAF 62	AS	276	9.6	41
Show		20315+3347	LAF 62	AT	196	9.6	41
Show		20315+3347	LAF 62	AU	347	9.9	41
Show		20315+3347	LAF 62	AV	255	10.1	41
Show		20315+3347	LAF 62	AW	201	10.1	41
Show		20315+3347	LAF 62	AX	311	10.2	41
Show		20315+3347	LAF 62	AY	329	10.2	41
Show		20315+3347	LAF 62	A,Za	167	10.6	41

WDS 20346+3334 : COMPONENTS

	A	B
B	pa=22.3° sep=43.32"
C	pa=158.1° sep=45.64"	pa=179.6° sep=82.43"

20346+3334 A

Coord arcsec 2000	203440.06+333437.0		Mag	12.83		PmRA	-12.00		PmDE	-10.0
Tycho2	2690-00789-1

Tycho2

Tycho2	2690-00789-1	Pflag		RAmdeg	308.66693978	DEmdeg	33.57698290
PmRA	-22.5	PmDE	-4.5	E RAmdeg	96	E DEmdeg	97
E pmRA	6.4	E pmDE	6.0	EpRAm	1987.36	EpDEm	1986.64
Num	2	Q RAmdeg		Q DEmdeg		Q pmRA
Q pmDE		BTmag	13.177	E BTmag	0.267	VTmag	12.510
E VTmag	0.184	Prox	860	TYC		HIP
CCDM		RAdeg	308.66700194	DEdeg	33.57699333	EpRA 1990	1.70
EpDE 1990	1.71	E RAdeg	100.2	E DEdeg	101.5	Posflg
Corr	0.1

20346+3334 B

Coord arcsec 2000	203441.37+333517.1		Mag	13.63		PmRA	-22.00		PmDE	-19.0
Calc delta mag	0.8		Calc coord	yes

20346+3334 C

Coord arcsec 2000	203441.42+333354.7		Mag	14.22		PmRA	-14.00		PmDE	-13.0
Calc delta mag	1.39		Calc coord	yes