21097+4230 GRV 428

21^h 09^m 46.64^s +42° 30' 33.1" P.A. 142.00 sep 40.9 mag 12.86,12.95

Coord 2000	21097+4230	Discov num	GRV 428	Comp		Coord arcsec 2000	21 09 46.64 +42 30 33.1
Date first	1998	Date last	2015	Obs	7
Pa first	142	Pa last	141.6	P.A. Now (θ)	141.6°
Sep first	40.9	Sep last	40.877	Sep. Now (ρ)	40.877"
Mag pri	12.86	Mag sec	12.95	delta mag (ΔM)	0.09	Spectral class
Pri motion ra	-006	Sec motion ra	-003
Pri motion dec	-011	Sec motion dec	-014
Notes

rPM=0.296 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Gaia DR2

1969840265894507648

WDS 21097+4230 GRV 428 : 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
21097+4230	GRV 428		2000	2	142	40.8	12.80	12.80		D	210946.64+423033.1
21097+4230	GRV 428		2002	3	142	40.8	12.80	12.80		D	210946.64+423033.1
21097+4230	GRV 428		2010	3	142	41.2	12.86	12.95			210946.64+423033.1
21097+4230	GRV 428		2015	4	142	40.9	12.86	12.95			210946.64+423033.1

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

WDS 21097+4230 GRV 428 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21097+4230 GRV 428 : MEASURES

No records found.

WDS 21097+4230 : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 21097+4230 : ALADIN DSS IMAGE @ 21^h 09^m 46.64^s +42° 30' 33.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21097+4230 GRV 428 : 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		21097+4230	GRV 428		142	40.9
Show		21115+4233	COU2225		82	2.1	21
Show		21108+4249	VKI 40		255	3.8	22
Show		21104+4253	BRT1144	BC	309	3.3	23
Show		21104+4253	BRT1144	AB	19	2.9	23
Show		21104+4253	BRT1144	AC	341	5.1	23
Show		21099+4257	LDS2492		135	21.5	27
Show		21105+4300	VKI 39		236	1.3	31
Show		21118+4259	STJ 91		271	1.0	37
Show		21092+4152	LDS2491		184	17.0	39
Show		21069+4256	ES 1580		88	3.8	41
Show		21119+4158	LDS2493		77	60.2	41
Show		21138+4228	LDS2497		110	36.7	43
Show		21062+4249	KPP1022		29	8.2	44
Show		21086+4312	GRV 423		212	62.4	44
Show		21133+4208	LDS2496		274	45.8	46
Show		21056+4241	TDT2735		95	0.5	48
Show		21144+4219	ES 1581		50	4.6	53
Show		21142+4211	COU2226		120	0.3	53
Show		21054+4256	ES 1579		273	4.3	54
Show		21069+4314	TDT2759		119	0.5	55
Show		21100+4326	ES 1453		67	5.3	56
Show		21064+4314	LDS2488		166	2.2	59
Show		21076+4137	BVD 159		49	4.3	59
Show		21062+4315	DAM1460		284	2.4	60
Show		21071+4322	ES 1452		19	2.3	60
Show		21151+4227	COU2228		28	0.5	60
Show		21041+4225	GII 54		246	5.3	64
Show		21040+4225	COU2433		52	0.3	64
Show		21151+4257	COU2300		263	0.3	65
Show		21071+4134	HJ 1613		5	16.4	65
Show		21155+4205	TDT2861		287	2.4	69
Show		21155+4202	HJL1106		183	459.8	70
Show		21161+4224	ES 1582		134	3.5	71
Show		21147+4143	POP1231		269	54.6	73
Show		21048+4144	COU2434		189	0.9	73
Show		21070+4125	BU 988	AB	223	1.2	73
Show		21070+4125	BU 988	AC	5	9.3	73
Show		21121+4123	LDS2494		212	2.0	77
Show		21112+4346	ES 1454	BC	285	3.2	77
Show		21053+4328	LDS2486		329	78.2	77
Show		21112+4346	ES 1454	AB	111	66.8	77
Show		21145+4329	J 610		26	3.3	78
Show		21115+4115	STT 431	AB	127	2.6	79
Show		21115+4115	STT 431	AC	356	55.4	79
Show		21115+4115	STT 431	BC	354	57.1	79
Show		21032+4158	COU2432		24	0.8	80
Show		21027+4218	LDS6351		156	134.5	81
Show		21160+4313	LDS2503		131	4.0	81
Show		21154+4325	LDS2502		172	67.0	82
Show		21024+4236	ES 1578		233	2.8	82

WDS 21097+4230 : COMPONENTS

	A
B	pa=149.7° sep=37.10"

21097+4230 A

Componente originario normalizzato	AB		Coord arcsec 2000	210946.64+423033.1		Mag	12.86		PmRA	-6.00
PmDE	-11.0

21097+4230 B

Componente originario normalizzato	AB		Coord arcsec 2000	210948.33+423001.1		Mag	12.95		PmRA	-3.00
PmDE	-14.0		Calc delta mag	0.09		Calc coord	yes