20247+3454 GRV 338

20^h 24^m 47.34^s +34° 54' 22.3" P.A. 20.00 sep 54.6 mag 12.23,14.11

Coord 2000	20247+3454	Discov num	GRV 338	Comp		Coord arcsec 2000	20 24 47.34 +34 54 22.3
Date first	1999	Date last	2015	Obs	8
Pa first	20	Pa last	20	P.A. Now (θ)	20°
Sep first	54.7	Sep last	54.573	Sep. Now (ρ)	54.573"
Mag pri	12.23	Mag sec	14.11	delta mag (ΔM)	1.88	Spectral class
Pri motion ra	+013	Sec motion ra	+012
Pri motion dec	+020	Sec motion dec	+003
Notes

rPM=0.714

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

2693-00280-1

Gaia DR2

2056394366678752896

WDS 20247+3454 GRV 338 : 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
20247+3454	GRV 338		2000	2	20	54.7	12.00	13.90		D	202447.34+345422.3
20247+3454	GRV 338		2002	3	20	54.7	12.00	13.90		D	202447.34+345422.3
20247+3454	GRV 338		2010	3	20	54.9	12.23	14.11			202447.34+345422.3
20247+3454	GRV 338		2015	4	20	54.6	12.23	14.11			202447.34+345422.3

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

WDS 20247+3454 GRV 338 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20247+3454 GRV 338 : MEASURES

No records found.

WDS 20247+3454 : VIRTUAL EYEPIECE

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

WDS 20247+3454 : ALADIN DSS IMAGE @ 20^h 24^m 47.34^s +34° 54' 22.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20247+3454 GRV 338 : 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		20247+3454	GRV 338		20	54.6
Show		20242+3456	POP 94		150	2.8	8
Show		20243+3507	POP 80		328	2.9	16
Show		20258+3504	TDT2264		59	1.2	17
Show		20242+3516	ES 2303	AB	23	5.3	24
Show		20242+3516	POP1230	AC	147	45.9	24
Show		20260+3512	COU2129		163	0.1	24
Show		20251+3522	SEI1118		150	9.4	28
Show		20252+3522	SEI1120		217	27.3	28
Show		20247+3523	SEI1117		127	13.1	30
Show		20239+3426	COU1950		265	1.1	30
Show		20266+3424	TDT2274		339	0.5	39
Show		20238+3531	SEI1114		55	18.1	39
Show		20278+3447	COU2131	AB	281	1.1	39
Show		20278+3447	GII 86	Aa,Ab	113	0.4	39
Show		20260+3414	COU1953		163	0.8	44
Show		20265+3414	TDT2271		171	1.6	46
Show		20251+3408	COU1951		179	1.3	47
Show		20235+3540	FYM 176	BC	34	8.4	48
Show		20218+3525	TDT2205		351	0.5	48
Show		20235+3540	SEI1109	AB	111	27.6	49
Show		20288+3447	COU2132		108	1.2	50
Show		20232+3542	FYM 177	EF	123	9.0	51
Show		20249+3404	A 290		132	0.5	51
Show		20248+3545	BU 432		196	1.5	52
Show		20232+3542	HJ 1506	AB	204	9.2	52
Show		20232+3542	HJ 1506	AC	194	35.5	52
Show		20232+3542	FYM 177	AD	125	28.9	52
Show		20207+3512	COU2218		88	0.2	53
Show		20211+3424	SEI1096		53	9.3	55
Show		20262+3547	COU2130	Aa,Ab	61	0.5	56
Show		20262+3547	SEI1125	AB	250	19.2	56
Show		20210+3525	POP 129	AB	289	55.6	57
Show		20210+3525	POP 129	AD	215	82.5	57
Show		20210+3525	POP 129	DE	258	13.5	57
Show		20260+3549	HDS2922		143	0.6	57
Show		20210+3525	POP 129	BC	33	6.1	57
Show		20287+3423	COU1957		84	1.2	58
Show		20250+3357	TDT2251		331	0.4	58
Show		20252+3554	SEI1119		212	7.0	60
Show		20255+3553	A 47		176	1.6	60
Show		20294+3447	GCB 53		338	4.3	60
Show		20237+3553	SEI1113		341	13.9	60
Show		20212+3537	ES 28		251	21.6	62
Show		20199+3506	TDT2174		227	0.5	62
Show		20198+3509	COU2217		27	1.0	63
Show		20233+3351	J 786		93	3.4	64
Show		20300+3448	J 789		97	2.3	65
Show		20273+3357	COU1955		350	0.4	65
Show		20256+3350	COU1952		233	1.6	66
Show		20290+3535	COU1959		323	0.4	66

WDS 20247+3454 : COMPONENTS

	A
B	pa=16.6° sep=53.52"

20247+3454 A

Componente originario normalizzato	AB		Coord arcsec 2000	202447.34+345422.3		Mag	12.23		PmRA	13.00
PmDE	20.0		Tycho2	2693-00280-1

Tycho2

Tycho2	2693-00280-1	Pflag		RAmdeg	306.19709009	DEmdeg	34.90626156
PmRA	6.4	PmDE	24.7	E RAmdeg	123	E DEmdeg	118
E pmRA	5.6	E pmDE	6.3	EpRAm	1976.88	EpDEm	1982.77
Num	3	Q RAmdeg	0.0	Q DEmdeg	0.9	Q pmRA	0.0
Q pmDE	0.9	BTmag	12.952	E BTmag	0.251	VTmag	12.039
E VTmag	0.167	Prox	999	TYC		HIP
CCDM		RAdeg	306.19707194	DEdeg	34.90620472	EpRA 1990	1.46
EpDE 1990	1.64	E RAdeg	148.3	E DEdeg	131.1	Posflg
Corr	0.2

20247+3454 B

Componente originario normalizzato	AB		Coord arcsec 2000	202448.58+345513.6		Mag	14.11		PmRA	12.00
PmDE	3.0		Calc delta mag	1.88		Calc coord	yes