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Doubles in session

Current system

21555+5232
ABH 154 AB,L

Selections

Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21555+5232 ABH 154 AB,L

21^h 55^m 31.59^s +52° 31' 40.7" P.A. 118.00 sep 75.7 mag 7.79,13.90 Sp F2V dist. 252.53 pc (823.75 l.y.)

Coord 2000	21555+5232		Discov num	ABH 154		Comp	AB,L		Coord arcsec 2000	21 55 31.59 +52 31 40.7
Date first	1987		Date last	2003		Obs	3
Pa first	119		Pa last	118.3		P.A. Now (θ)	118.3°
Sep first	76.1		Sep last	75.74		Sep. Now (ρ)	75.74"
Mag pri	7.79		Mag sec	13.90		delta mag (ΔM)	6.11		Spectral class	F2V (yellow-white)
Pri motion ra	-005		Sec motion ra
Pri motion dec	-009		Sec motion dec
Notes	U (Proper motion indicates non-physical)

This double is not physical.

21555+5232 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			21 55 32 +52 31 41	STT 456 AB	2019	79	38	1.6	8.25	8.93	0.68
Show			21 55 32 +52 31 41	STT 456 AC	2016	17	291	26.1	8.25	10.55	2.30
Show			21 55 32 +52 31 41	STT 456 AD	2016	16	185	25.2	8.25	10.96	2.71
Show	HD 208546		21 55 32 +52 31 41	ABH 154 AB,E	2003	5	18	54.6	7.79	12.24	4.45
Show			21 55 32 +52 31 41	ABH 154 AB,F	2003	3	104	57.5	7.79	12.42	4.63
Show			21 55 32 +52 31 41	ABH 154 AB,G	2010	11	107	111.6	7.79	9.52	1.73
Show			21 55 32 +52 31 41	ABH 154 AB,H	2003	3	183	59.1	7.79	13.73	5.94
Show			21 55 32 +52 31 41	ABH 154 AB,I	2003	3	256	101.0	7.79	13.53	5.74
Show			21 55 32 +52 31 41	ABH 154 AB,J	2003	3	46	80.4	7.79	13.68	5.89
Show			21 55 32 +52 31 41	ABH 154 AB,K	2000	2	124	72.3	7.79	14.30	6.51
Show			21 55 32 +52 31 41	ABH 154 AB,L	2003	3	118	75.7	7.79	13.90	6.11		<===
Show			21 55 29 +52 31 50	STT 456 CD	2015	27	148	40.8	10.55	10.96	0.41

12-fold system
13 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cygnus		HIP	108230		Tycho2	3968-01329-1		Gaia DR2	1981338477465784960
HD	208546		BD	BD+51 3187		Distance	252.53		Distance ly	823.75