20523+1304 GRV 390

20^h 52^m 19.28^s +13° 04' 41.7" P.A. 107.00 sep 42.6 mag 13.09,13.40

Coord 2000	20523+1304	Discov num	GRV 390	Comp		Coord arcsec 2000	20 52 19.28 +13 04 41.7
Date first	1997	Date last	2015	Obs	7
Pa first	107	Pa last	106.9	P.A. Now (θ)	106.9°
Sep first	42.6	Sep last	42.62	Sep. Now (ρ)	42.62"
Mag pri	13.09	Mag sec	13.40	delta mag (ΔM)	0.31	Spectral class
Pri motion ra	-014	Sec motion ra	-003
Pri motion dec	-015	Sec motion dec	-001
Notes

rPM=0.868

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Delphinus

Gaia DR2

1761065680897212288

WDS 20523+1304 GRV 390 : 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
20523+1304	GRV 390		2000	2	107	42.6	12.90	13.20		D	205219.28+130441.7
20523+1304	GRV 390		2001	3	107	42.6	12.90	13.20		D	205219.28+130441.7
20523+1304	GRV 390		2010	3	107	42.6	13.09	13.40			205219.28+130441.7
20523+1304	GRV 390		2015	4	107	42.6	13.09	13.40			205219.28+130441.7

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

WDS 20523+1304 GRV 390 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20523+1304 GRV 390 : MEASURES

No records found.

WDS 20523+1304 : VIRTUAL EYEPIECE

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WDS 20523+1304 : ALADIN DSS IMAGE @ 20^h 52^m 19.28^s +13° 04' 41.7"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20523+1304 GRV 390 : 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		20523+1304	GRV 390		107	42.6
Show		20541+1306	STF2734		227	24.4	26
Show		20503+1317	BPM2279		146	89.2	33
Show		20499+1255	HJ 1577		245	9.4	37
Show		20516+1340	TDT2583		98	0.6	38
Show		20550+1259	BPM2293		25	100.2	39
Show		20498+1321	HJ 1578		311	11.5	39
Show		20502+1246	J 3277		326	4.1	40
Show		20496+1322	TDT2565		136	1.4	44
Show		20497+1331	BPM2277		190	94.4	47
Show		20549+1236	BPM2292		143	61.9	47
Show		20528+1351	UC 4315	AB	157	14.6	48
Show		20524+1353	BPM2285		88	101.7	49
Show		20496+1233	BU 1495	AB	19	52.1	51
Show		20496+1233	BU 1495	AC	86	105.5	51
Show		20496+1233	BU 1495	AD	276	189.6	51
Show		20492+1243	GWP3001		126	94.3	51
Show		20553+1236	BPM2295		182	40.1	53
Show		20488+1248	GWP3000		280	24.1	55
Show		20556+1234	HJ 1592	AB	15	34.4	58
Show		20556+1234	DRS 30	Aa,Ab	116	0.2	58
Show		20519+1203	J 3245		249	3.8	64
Show		20541+1402	J 846		155	3.6	64
Show		20524+1200	GWP3008		252	11.1	65
Show		20567+1300	STF2736		219	5.3	65
Show		20548+1403	BPM2291		100	25.7	69
Show		20486+1223	BPM2273		132	52.3	70
Show		20529+1415	GAI9015	AB	277	1.3	71
Show		20529+1415	GAI9015	AC	167	51.8	71
Show		20471+1257	BPM2265		51	16.1	77
Show		20520+1422	BRT1956		197	6.4	79
Show		20523+1144	BPM2284		252	115.9	81
Show		20487+1407	LIT 34		206	9.5	82
Show		20562+1406	GRV 398		148	61.1	85
Show		20481+1404	UC 4293		5	14.4	85
Show		20578+1339	FMR 162		290	13.0	87
Show		20550+1423	BPM2294		342	59.0	88
Show		20515+1432	GRV 388		239	51.4	89
Show		20466+1334	GWP2996		157	54.2	90
Show		20467+1343	BPM2262		331	74.6	91
Show		20495+1426	BRT1955		109	5.0	92
Show		20586+1313	TDT2669		119	0.4	92
Show		20585+1239	BPM2304		343	79.8	94
Show		20500+1432	CVR 874		82	16.7	94
Show		20577+1402	A 1685	AB	86	0.7	97
Show		20577+1402	A 1685	AC	126	14.6	97
Show		20573+1200	KPP3365		169	3.6	97
Show		20460+1235	KPP 477		52	4.5	98
Show		20457+1302	WFC 258		284	11.7	98
Show		20572+1157	TDT2655		118	0.4	98
Show		20596+1305	TDT2680	AB	40	10.4	107

WDS 20523+1304 : COMPONENTS

	A
B	pa=107.3° sep=41.61"

20523+1304 A

Componente originario normalizzato	AB		Coord arcsec 2000	205219.28+130441.7		Mag	13.09		PmRA	-14.00
PmDE	-15.0

20523+1304 B

Componente originario normalizzato	AB		Coord arcsec 2000	205222.00+130429.3		Mag	13.4		PmRA	-3.00
PmDE	-1.0		Calc delta mag	0.31		Calc coord	yes