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00170+2146
KU 4

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

00170+2146 KU 4

00^h 17^m 01.49^s +21° 46' 26.2" P.A. 135.00 sep 2.4 mag 9.78,10.64 Sp G0 dist. 178.57 pc (582.5 l.y.)

Coord 2000	00170+2146		Discov num	KU 4		Comp			Coord arcsec 2000	00 17 01.49 +21 46 26.2
Date first	1901		Date last	2016		Obs	28
Pa first	135		Pa last	135		P.A. Now (θ)	135°
Sep first	2.5		Sep last	2.4		Sep. Now (ρ)	2.4"
Mag pri	9.78		Mag sec	10.64		delta mag (ΔM)	0.86		Spectral class	G0 (yellow)
Pri motion ra	+103		Sec motion ra	+103
Pri motion dec	-053		Sec motion dec	-053
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	135.2		Precise sep	2.38		Constellation	Andromeda		HIP	1358
Tycho2	1185-01789-1		Gaia DR2	2800245666843767040		BD	BD+20 18		Distance	178.57
Distance ly	582.5

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00170+2146	KU 4		2000	25	135	2.4	9.78	10.64	G0	D	001701.49+214626.2
00170+2146	KU 4		2009	26	136	2.4	9.78	10.64	G0	D	001701.49+214626.2
00170+2146	KU 4		2015	27	135	2.4	9.78	10.64	G0		001701.49+214626.2

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