20440-0631 GRV 1138

20^h 44^m 59.12^s -06° 31' 23.5" P.A. 50.00 sep 33.2 mag 15.20,17.10

Coord 2000	20440-0631	Discov num	GRV1138	Comp		Coord arcsec 2000	20 44 59.12 -06 31 23.5
Date first	1998	Date last	2016	Obs	10
Pa first	50	Pa last	49.7	P.A. Now (θ)	49.7°
Sep first	33.3	Sep last	33.229	Sep. Now (ρ)	33.229"
Mag pri	15.20	Mag sec	17.10	delta mag (ΔM)	1.9	Spectral class
Pri motion ra	+025	Sec motion ra	+021
Pri motion dec	+024	Sec motion dec	+022
Notes

rPM=0.129 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Aquarius

Gaia DR2

6907306941053074432

WDS 20440-0631 GRV 1138 : 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
20440-0631	GRV1138		2000	2	50	33.2	15.20	17.10		D	204459.12-063123.5
20440-0631	GRV1138		2010	5	50	33.3	15.20	17.10			204459.12-063123.5
20440-0631	GRV1138		2015	6	50	33.2	15.20	17.10			204459.12-063123.5
20440-0631	GRV1138		2016	10	50	33.2	15.20	17.10			204459.12-063123.5

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

WDS 20440-0631 GRV 1138 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20440-0631 GRV 1138 : MEASURES

No records found.

WDS 20440-0631 : VIRTUAL EYEPIECE

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

WDS 20440-0631 : ALADIN DSS IMAGE @ 20^h 44^m 59.12^s -06° 31' 23.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20440-0631 GRV 1138 : 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		20440-0631	GRV1138		50	33.2	1
Show		20453-0646	RST4680		235	0.1	15
Show		20439-0557	RST4679		356	0.3	38
Show		20475-0646	SKF1769		244	2.0	40
Show		20455-0716	A 3000		64	0.7	46
Show		20447-0721	A 2999		221	2.1	50
Show		20482-0648	RST4681		243	0.3	51
Show		20417-0646	CVR 872		20	20.3	53
Show		20482-0601	TOK 341		261	391.4	57
Show		20411-0558	BAR9004		266	3.2	68
Show		20432-0733	TDS1093		33	0.9	68
Show		20468-0527	KPP 478		273	3.8	70
Show		20404-0610	CVR 229		73	35.1	73
Show		20502-0640	FMR 19		333	4.2	79
Show		20447-0511	HJ 924		85	8.1	81
Show		20393-0609	BRT 555		266	2.9	88
Show		20392-0609	RAS 31		142	0.5	90
Show		20390-0555	GWP2977		142	108.2	97
Show		20455-0809	HJ 925		174	10.1	98
Show		20490-0749	UC 4297		261	21.3	99
Show		20458-0454	UC 4282	AB	209	41.1	99
Show		20430-0806	UC 4266		144	21.3	100
Show		20452-0814	TOB 312		26	40.8	103
Show		20419-0458	RST4676		188	0.3	104
Show		20507-0529	BRT 507		69	9.2	105
Show		20514-0538	STF2729	AB	35	0.7	111
Show		20514-0538	STF2729	AC	311	74.3	111
Show		20514-0538	STF2729	AD	324	137.3	111
Show		20375-0614	BRT 504		329	3.9	114
Show		20399-0804	GWP2978		153	9.0	120
Show		20531-0651	J 2326		80	8.1	123
Show		20495-0815	TDT2563		92	0.6	123
Show		20456-0426	OCC9021		273	0.0	126
Show		20366-0622	CVR 871		295	23.9	126
Show		20499-0815	J 2322	AB	8	3.9	127
Show		20534-0657	GWP3012		289	119.4	129
Show		20418-0430	HJ 921		220	9.4	131
Show		20414-0835	HDO 159		236	8.2	133
Show		20531-0728	BRT 556		109	2.5	134
Show		20364-0550	HO 279		184	7.7	135
Show		20534-0719	RST4685		81	2.1	135
Show		20509-0815	SHN 247		-1	0.5	136
Show		20417-0424	BU 267		237	1.9	137
Show		20358-0628	UC 4227		283	36.9	137
Show		20428-0418	UC 4265		32	50.1	138
Show		20469-0417	J 1709		216	8.3	139
Show		20456-0853	HDO 160		201	5.7	142
Show		20446-0853	J 2320	AB	135	3.4	143
Show		20446-0853	J 2320	AC	54	10.5	143
Show		20372-0523	J 2316		54	12.7	144
Show		20354-0615	FOX 94		240	2.5	144

WDS 20440-0631 : COMPONENTS

	A
B	pa=49.5° sep=33.10"

20440-0631 A

Componente originario normalizzato	AB		Coord arcsec 2000	204459.12-063123.5		Mag	15.2		PmRA	25.00
PmDE	24.0

20440-0631 B

Componente originario normalizzato	AB		Coord arcsec 2000	204500.81-063102.0		Mag	17.1		PmRA	21.00
PmDE	22.0		Calc delta mag	1.9		Calc coord	yes