21569+3735 BKO 905 AD

21^h 56^m 53.14^s +37° 35' 21.9" P.A. 33.00 sep 17.8 mag 11.85,13.87

Coord 2000	21569+3735	Discov num	BKO 905	Comp	AD	Coord arcsec 2000	21 56 53.14 +37 35 21.9
Date first	2000	Date last	2015	Obs	9
Pa first	34	Pa last	33.3	P.A. Now (θ)	33.3°
Sep first	17.8	Sep last	17.76	Sep. Now (ρ)	17.76"
Mag pri	11.85	Mag sec	13.87	delta mag (ΔM)	2.02	Spectral class
Pri motion ra	-004	Sec motion ra	-006
Pri motion dec	-006	Sec motion dec	-006
Notes

rPM=0.236 (< 0.3, Physical double)

This double is physical.

21569+3735 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			21 56 53 +37 35 22	BKO 905 AB	2015	9	316	6.3	11.85	13.45	1.60
Show			21 56 53 +37 35 22	BKO 905 AC	2015	9	36	6.8	11.85	15.20	3.35
Show			21 56 53 +37 35 22	BKO 905 AD	2015	9	33	17.8	11.85	13.87	2.02		<===

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Gaia DR2

1949933607863851904

WDS 21569+3735 BKO 905 AD : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Bko2002	C -	Ladanyi, T. & Berko, E.	...................
Bko2002		Webb Soc., Double Star Circ. 10, 2002
Bko2003	C u	Ladanyi, T., Berko, E. & Vaskuti, G	...................
Bko2003		Webb Soc., Double Star Circ. 11, 2003
Bko2004	C u	Berko, E., Ladanyi, T. & Vaskuti, G	...................
Bko2004		Webb Soc., Double Star Circ. 12, 2004
Bko2005	C u	Berko, E., Ladanyi, T. & Vaskuti, G	...................
Bko2005		Webb Soc., Double Star Circ. 13, 2005
Bko2008	C u	Berko, E. & Vaskuti, G.	...................
Bko2008		Webb Soc., Double Star Circ. 16, 2008
Bko2008b	C u	Berko, E.	2008JDSO....4..144B
Bko2008b		JDSO 4, 144, 2008
Bko2009	C u	Berko, E.	2009JDSO....5...49B
Bko2009		JDSO 5, 49, 2009
Bko2009b	C u	Berko, E.	2009JDSO....5..168B
Bko2009b		JDSO 5, 168, 2009
Bko2009c	C u	Berko, E.	...................
Bko2009c		Webb Soc., Double Star Circ. 17, 2009
Bko2009d	C u	Berko, E.	2009JDSO....5..189B
Bko2009d		JDSO 5, 189, 2009
Bko2010a	C u	Berko, E.	2010JDSO....6...21B
Bko2010a		JDSO 6, 21, 2010
Bko2010b	C u	Berko, E.	...................
Bko2010b		Webb Soc., Double Star Circ. 18, 2010
Bko2011a	C u	Berko, E.	2011JDSO....7....2B
Bko2011a		JDSO 7, 2, 2011
Bko2011b	C u	Berko, E.	...................
Bko2011b		Webb Soc., Double Star Circ. 19, 29, 2011 (BKO 898 - BKO 980)
Bko2011c	C u	Berko, E.	...................
Bko2011c		Webb Soc., Double Star Circ. 19, 42, 2011 (BKO 981 - BKO1042)
Bko2012	C u	Berko, E.	...................
Bko2012		Webb Soc., Double Star Circ. 20, 2012

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21569+3735	BKO 905	AD	2009	3	34	17.9	11.85	13.87			215653.14+373521.9
21569+3735	BKO 905	AD	2015	4	34	17.9	11.85	13.87			215653.14+373521.9

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

WDS 21569+3735 BKO 905 AD : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21569+3735 BKO 905 AD : MEASURES

No records found.

WDS 21569+3735 : 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 21569+3735 : ALADIN DSS IMAGE @ 21^h 56^m 53.14^s +37° 35' 21.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21569+3735 BKO 905 AD : 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		21569+3735	BKO 905	AB	316	6.3
Show		21569+3735	BKO 905	AC	36	6.8
Show		21569+3735	BKO 905	AD	33	17.8
Show		21573+3732	ES 2526	BC	183	5.8	7
Show		21573+3732	ES 2526	AB	269	17.9	7
Show		21573+3732	ABH 155	AD	259	99.1	7
Show		21573+3732	ABH 155	AE	307	93.5	7
Show		21573+3732	ABH 155	AF	359	46.4	7
Show		21573+3732	ABH 155	AG	22	50.2	7
Show		21573+3732	ABH 155	AH	65	105.4	7
Show		21573+3732	ABH 155	AI	146	63.7	7
Show		21573+3732	ABH 155	AJ	161	35.4	7
Show		21564+3725	ES 2525		110	8.4	13
Show		21559+3752	ES 2524		277	6.2	21
Show		21558+3716	HO 174	BC	224	163.0	24
Show		21558+3716	HO 174	AB	335	7.6	24
Show		21558+3716	HO 174	AC	226	160.4	24
Show		21560+3712	SCH 1		290	90.6	26
Show		21558+3716	HO 174	CD	262	6.0	26
Show		21588+3745	ES 2527		322	8.2	27
Show		21557+3708	ES 2523		32	4.7	31
Show		21589+3755	A 1450		190	4.1	32
Show		21565+3701	ES 2069	AB	106	4.9	36
Show		21565+3701	ES 2069	AC	214	6.5	36
Show		21547+3814	TOK 638	AB	65	999.9	47
Show		21581+3650	TDT3263		164	0.8	48
Show		22009+3755	TDT3291		163	0.5	53
Show		21584+3643	LDS4930		163	33.7	57
Show		21520+3722	CRB 144		109	12.2	60
Show		21517+3716	COU1641		309	2.1	61
Show		22020+3727	A 1452		289	1.9	62
Show		21514+3730	SEI1540		207	23.6	66
Show		21512+3741	TDT3193		212	1.2	69
Show		21590+3839	COU1339		261	1.4	69
Show		22016+3816	TDT3296		209	0.6	70
Show		21522+3817	TDT3205		142	0.5	70
Show		22026+3754	RAO 472		274	3.9	70
Show		21550+3843	KU 62		54	1.6	71
Show		21541+3633	KPP1393		139	10.4	71
Show		21520+3653	J 3149	AB	93	5.0	73
Show		21520+3653	TDT3202	AC	210	0.6	73
Show		22023+3659	HO 177		111	8.4	74
Show		22027+3707	J 3157		108	4.1	75
Show		22011+3832	RAO 471		330	1.3	76
Show		21556+3849	A 1449		50	0.3	76
Show		21520+3826	HDS3114		119	0.1	77
Show		21550+3851	TDT3237		115	1.7	79
Show		22032+3804	ES 2528		86	5.3	80
Show		21579+3616	COU1338		111	1.2	81
Show		21502+3750	ES 1996		337	2.3	81
Show		22030+3659	ALI 449		307	9.9	82

WDS 21569+3735 : COMPONENTS

	A	B	C
B	pa=322.4° sep=5.69"
C	pa=30.2° sep=6.33"	pa=81.8° sep=6.73"
D	pa=27.5° sep=16.73"	pa=47.3° sep=15.24"	pa=25.9° sep=10.41"

21569+3735 A

Coord arcsec 2000

215653.14+373521.9

Mag

11.85

PmRA

-4.00

PmDE

-6.0

21569+3735 B

Coord arcsec 2000	215652.85+373526.4		Mag	13.45		PmRA	-3.00		PmDE	-5.0
Calc delta mag	1.6		Calc coord	yes

21569+3735 C

Coord arcsec 2000	215653.41+373527.4		Mag	15.2		PmRA	-4.00		PmDE	-26.0
Calc delta mag	3.35		Calc coord	yes

21569+3735 D

Coord arcsec 2000	215653.79+373536.7		Mag	13.87		PmRA	-6.00		PmDE	-6.0
Calc delta mag	2.02		Calc coord	yes