21187+4428 LDS 2507

21^h 18^m 08.57^s +44° 28' 00.0" P.A. 182.00 sep 3.0 mag 19.60,20.80

Coord 2000	21187+4428	Discov num	LDS2507	Comp		Coord arcsec 2000	21 18 08.57 +44 28 00.0
Date first	1954	Date last	1954	Obs	1
Pa first	182	Pa last	182	P.A. Now (θ)	182°
Sep first	3.0	Sep last	3	Sep. Now (ρ)	3"
Mag pri	19.60	Mag sec	20.80	delta mag (ΔM)	1.2	Spectral class
Pri motion ra	+001	Sec motion ra
Pri motion dec	+039	Sec motion dec
Notes	X (Dubious double)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Coordinate calcolate

Coordinate calculated

yes

WDS 21187+4428 LDS 2507 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
LDS		Luyten p.m. catalog (from additional DD list)	...................

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21187+4428	LDS2507		1954	1	182	3.0	19.60	20.80		X

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

WDS 21187+4428 LDS 2507 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21187+4428 LDS 2507 : MEASURES

No records found.

WDS 21187+4428 : 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 21187+4428 : ALADIN DSS IMAGE @ 21^h 18^m 08.57^s +44° 28' 00.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21187+4428 LDS 2507 : 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		21187+4428	LDS2507		182	3.0
Show		21166+4448	ES 97		290	7.5	27
Show		21161+4444	MCN 2		303	16.0	28
Show		21169+4456	A 885		153	3.9	31
Show		21185+4357	TRN 32		81	3.8	32
Show		21166+4357	BRT1147			2.6	35
Show		21212+4449	ES 1334	AB	307	5.3	39
Show		21207+4455	GRV 451		184	52.1	40
Show		21176+4350	COU2301		69	0.5	40
Show		21189+4351	COU2438		254	1.4	40
Show		21217+4434	GRV 455		132	28.9	40
Show		21171+4350	TDT2882		334	0.6	40
Show		21139+4438	TDT2839		352	1.2	46
Show		21183+4514	TDT2893		234	0.6	47
Show		21220+4408	HJ 1639		102	10.7	48
Show		21202+4509	LDS2510		345	20.4	49
Show		21136+4433	ES 1333		296	1.6	49
Show		21225+4409	HJ 1640		35	7.4	52
Show		21227+4408	COU2303		269	1.9	53
Show		21139+4400	COU2299		33	0.4	53
Show		21223+4353	TDT2930		356	1.8	57
Show		21219+4347	TDT2924		221	1.0	58
Show		21152+4339	LDS2501		274	11.3	59
Show		21137+4453	LDS2498		316	13.0	59
Show		21237+4420	KPP3422		231	17.2	61
Show		21148+4518	TDT2855		1	0.5	62
Show		21205+4528	KRV 9		123	21.2	66
Show		21120+4419	TDT2816		89	0.3	67
Show		21202+4325	BRT1148		83	4.1	67
Show		21158+4326	TDT2867		305	0.6	68
Show		21192+4320	TDT2899		136	0.6	70
Show		21118+4417	TDT2812		258	0.5	70
Show		21154+4325	LDS2502		172	67.0	71
Show		21145+4329	J 610		26	3.3	72
Show		21154+4539	TDT2860		243	5.6	77
Show		21246+4355	BRT1149		136	3.2	77
Show		21171+4312	A 401		318	0.4	78
Show		21160+4313	LDS2503		131	4.0	79
Show		21108+4417	A 882		228	2.6	80
Show		21200+4308	LDS2509		176	1.9	81
Show		21196+4549	TDS1123	AB	63	1.5	83
Show		21145+4542	COU2436		266	5.0	84
Show		21199+4307	COU2439		266	0.8	84
Show		21112+4346	ES 1454	BC	285	3.2	86
Show		21112+4346	ES 1454	AB	111	66.8	86
Show		21178+4302	A 616		316	2.7	87
Show		21165+4554	HDS3027		48	0.4	89
Show		21099+4422	STF2772		224	12.4	89
Show		21218+4309	STT 438		357	2.2	89
Show		21103+4359	STF2773	EF	41	10.7	90
Show		21103+4359	STF2773	AB	112	3.3	90

WDS 21187+4428 : COMPONENTS

	A
B	pa=181.4° sep=3.00"

21187+4428 A

Componente originario normalizzato	AB		Coord arcsec 2000	211808.57+442800.0		Mag	19.6		PmRA	1.00
PmDE	39.0		Calc coord	yes

21187+4428 B

Componente originario normalizzato	AB		Coord arcsec 2000	211808.56+442757.0		Mag	20.8		Calc delta mag	1.2
Calc coord	yes