21423+2800 GRV 494

21^h 42^m 20.13^s +28° 00' 35.6" P.A. 323.00 sep 62.9 mag 12.65,14.12

Coord 2000	21423+2800	Discov num	GRV 494	Comp		Coord arcsec 2000	21 42 20.13 +28 00 35.6
Date first	1997	Date last	2015	Obs	8
Pa first	323	Pa last	323	P.A. Now (θ)	323°
Sep first	63.1	Sep last	62.936	Sep. Now (ρ)	62.936"
Mag pri	12.65	Mag sec	14.12	delta mag (ΔM)	1.47	Spectral class
Pri motion ra	-014	Sec motion ra	-013
Pri motion dec	-016	Sec motion dec	-014
Notes

rPM=0.105 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Pegasus

Gaia DR2

1801158925727302784

WDS 21423+2800 GRV 494 : 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
21423+2800	GRV 494		2000	2	323	63.0	12.40	13.80		D	214220.13+280035.6
21423+2800	GRV 494		2002	4	323	63.0	12.40	13.80		D	214220.13+280035.6
21423+2800	GRV 494		2010	4	323	63.1	12.65	14.12			214220.13+280035.6
21423+2800	GRV 494		2015	5	323	62.9	12.65	14.12			214220.13+280035.6

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

WDS 21423+2800 GRV 494 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21423+2800 GRV 494 : MEASURES

No records found.

WDS 21423+2800 : VIRTUAL EYEPIECE

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WDS 21423+2800 : ALADIN DSS IMAGE @ 21^h 42^m 20.13^s +28° 00' 35.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21423+2800 GRV 494 : 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		21423+2800	GRV 494		323	62.9
Show		21420+2741	RAO 465	Aa,Ab	128	0.3	20
Show		21420+2741	RAO 465	AB	303	2.6	20
Show		21439+2751	HO 166		233	0.2	23
Show		21444+2824	KPP3373		242	2.1	37
Show		21435+2725	BKO 631		26	5.9	39
Show		21399+2737	HDS3083		337	0.2	41
Show		21435+2721	OSO 155	DG	304	6.1	43
Show		21435+2721	A 299	DE	95	999.9	43
Show		21435+2721	A 299	DF	26	145.8	43
Show		21435+2721	A 299	AB	67	1.1	43
Show		21435+2721	A 299	AD	64	374.5	43
Show		21435+2721	A 299	BC	325	0.1	43
Show		21454+2819	J 3145		112	5.4	44
Show		21441+2845	STF2822	AB	325	1.6	51
Show		21441+2845	STF2822	AC	292	76.6	51
Show		21441+2845	STF2822	AD	43	197.0	51
Show		21441+2845	FYM 25	AF	72	111.5	51
Show		21441+2845	FYM 25	AG	73	168.1	51
Show		21441+2845	STF2822	BD	45	196.7	51
Show		21390+2826	ES 520		36	9.3	52
Show		21462+2817	MLB 540	AB	256	4.1	52
Show		21462+2817	MLB 540	AC	322	8.7	52
Show		21462+2817	ABH 152	AD	68	41.8	52
Show		21462+2817	ABH 152	AE	96	80.1	52
Show		21441+2845	ES 521	DE	286	17.5	54
Show		21441+2845	FYM 25	DG	164	89.6	54
Show		21453+2722	HO 606		93	18.4	56
Show		21396+2712	GRV 489		229	51.9	60
Show		21379+2743	HDS3080	Aa,Ab	109	0.2	60
Show		21379+2743	MLB1093	AB	268	26.7	60
Show		21379+2743	SKF 245	AC	16	3.3	60
Show		21418+2901	MLB 492		114	7.0	62
Show		21386+2720	KPP 497		205	4.6	65
Show		21457+2708	BKO 633		18	7.4	70
Show		21456+2709	MLB1050		67	6.9	71
Show		21416+2911	GRV 493		184	44.7	72
Show		21468+2718	HO 608		130	0.6	74
Show		21461+2855	BRT 58		165	4.4	74
Show		21477+2740	CVR 922		225	9.9	74
Show		21474+2834	A 300	AB	252	2.3	76
Show		21474+2834	A 300	AC	29	7.5	76
Show		21474+2834	A 300	AD	170	8.4	76
Show		21480+2819	MLB 541		340	9.9	78
Show		21410+2920	STT 448		31	0.1	82
Show		21420+2924	MLB 539		171	4.8	83
Show		21452+2914	UC 4550		15	42.5	83
Show		21474+2855	AG 420		145	7.5	87
Show		21469+2907	CVR 919		201	23.5	90
Show		21442+2631	BUP 230	CD	32	277.1	93
Show		21442+2631	BUP 230	AB	291	45.7	93

WDS 21423+2800 : COMPONENTS

	A
B	pa=326.4° sep=60.37"

21423+2800 A

Componente originario normalizzato	AB		Coord arcsec 2000	214220.13+280035.6		Mag	12.65		PmRA	-14.00
PmDE	-16.0

21423+2800 B

Componente originario normalizzato	AB		Coord arcsec 2000	214217.60+280125.9		Mag	14.12		PmRA	-13.00
PmDE	-14.0		Calc delta mag	1.47		Calc coord	yes