21198+3138 GRV 445

21^h 19^m 50.88^s +31° 38' 41.7" P.A. 278.00 sep 36.2 mag 13.33,13.62

Coord 2000	21198+3138	Discov num	GRV 445	Comp		Coord arcsec 2000	21 19 50.88 +31 38 41.7
Date first	1998	Date last	2015	Obs	7
Pa first	277	Pa last	277.7	P.A. Now (θ)	277.7°
Sep first	36.3	Sep last	36.176	Sep. Now (ρ)	36.176"
Mag pri	13.33	Mag sec	13.62	delta mag (ΔM)	0.29	Spectral class
Pri motion ra	-009	Sec motion ra	-005
Pri motion dec	-016	Sec motion dec	-009
Notes

rPM=0.439

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Gaia DR2

1853625528962699776

WDS 21198+3138 GRV 445 : 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
21198+3138	GRV 445		2000	2	277	36.3	12.50	13.10		D	211950.88+313841.7
21198+3138	GRV 445		2002	3	278	36.3	12.50	13.10		D	211950.88+313841.7
21198+3138	GRV 445		2010	3	278	36.1	13.33	13.62			211950.88+313841.7
21198+3138	GRV 445		2015	4	278	36.2	13.33	13.62			211950.88+313841.7

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WDS 21198+3138 GRV 445 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21198+3138 GRV 445 : MEASURES

No records found.

WDS 21198+3138 : VIRTUAL EYEPIECE

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WDS 21198+3138 : ALADIN DSS IMAGE @ 21^h 19^m 50.88^s +31° 38' 41.7"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21198+3138 GRV 445 : 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		21198+3138	GRV 445		278	36.2
Show		21205+3107	J 3135		97	4.0	30
Show		21223+3139	ES 377	BC	211	2.2	32
Show		21223+3139	ES 377	AB	291	48.7	33
Show		21225+3123	KPP1063		321	8.4	38
Show		21229+3149	J 2344		227	6.7	40
Show		21226+3158	HJ 1637	AB	104	13.4	40
Show		21226+3158	DAL 15	AC	142	8.3	40
Show		21229+3142	GRV 458		123	43.4	40
Show		21174+3203	HJ 931		356	9.9	40
Show		21231+3144	HDS3046	AB	329	4.8	43
Show		21231+3144	DAM 229	AC	22	14.2	43
Show		21220+3106	KPP3368		41	8.9	43
Show		21171+3203	FOX9054		358	6.1	43
Show		21219+3104	CRB 141		22	28.8	44
Show		21230+3202	HO 157		26	3.6	47
Show		21162+3145	TDT2871		230	3.3	48
Show		21207+3226	POP 201		203	7.1	49
Show		21208+3227	STT 437	AB	19	2.5	51
Show		21208+3227	STT 437	AC	144	79.6	51
Show		21237+3131	GRV 460		185	52.6	51
Show		21234+3115	A 1218		15	4.1	52
Show		21222+3056	ES 376		221	9.2	52
Show		21218+3230	HLM 40		23	15.5	53
Show		21182+3227	GRV 444		250	36.1	53
Show		21180+3049	COU1183		16	0.3	55
Show		21158+3159	TDT2868		185	2.0	56
Show		21212+3044	TDT2914		17	2.0	58
Show		21155+3114	TDT2862		305	0.5	61
Show		21160+3217	SEI1482		197	19.9	62
Show		21203+3240	GRV 449		327	64.2	62
Show		21185+3037	FYM 538	AB	192	7.0	63
Show		21185+3037	FYM 538	BC	218	5.7	63
Show		21182+3035	HO 154	AB	211	3.6	67
Show		21182+3035	POP 228	AC	139	9.0	67
Show		21182+3035	NOV 1	AD	162	21.4	67
Show		21182+3035	POP 228	AN	262	64.2	67
Show		21182+3035	NOV 1	AX	142	186.7	67
Show		21182+3035	POP 228	NK	64	6.5	68
Show		21252+3129	A 1220		160	1.6	69
Show		21182+3035	NOV 1	XL	89	32.2	69
Show		21182+3035	NOV 1	XQ	134	29.2	69
Show		21182+3035	NOV 1	XY	206	14.1	69
Show		21182+3035	NOV 1	XZ	57	18.3	69
Show		21146+3157	GRV 437		204	51.6	69
Show		21153+3051	GRV 439		127	21.5	75
Show		21148+3216	SEI1463		127	26.6	75
Show		21216+3253	GYL 54		137	22.2	78
Show		21155+3042	KPP 488		119	3.6	80
Show		21157+3235	HJ 1628		252	15.1	82
Show		21145+3052	TDT2850		173	2.7	84

WDS 21198+3138 : COMPONENTS

	A
B	pa=279.0° sep=30.90"

21198+3138 A

Componente originario normalizzato	AB		Coord arcsec 2000	211950.88+313841.7		Mag	13.33		PmRA	-9.00
PmDE	-16.0

21198+3138 B

Componente originario normalizzato	AB		Coord arcsec 2000	211948.49+313846.5		Mag	13.62		PmRA	-5.00
PmDE	-9.0		Calc delta mag	0.29		Calc coord	yes