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20087+1223
J 1338

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

20087+1223 J 1338

20^h 08^m 43.69^s +12° 23' 41.4" P.A. 73.00 sep 10.0 mag 11.75,12.30

Coord 2000	20087+1223		Discov num	J 1338		Comp			Coord arcsec 2000	20 08 43.69 +12 23 41.4
Date first	1914		Date last	2016		Obs	26
Pa first	42		Pa last	73		P.A. Now (θ)	73°
Sep first	2.6		Sep last	10.0		Sep. Now (ρ)	10"
Mag pri	11.75		Mag sec	12.30		delta mag (ΔM)	0.55		Spectral class
Pri motion ra	-022		Sec motion ra
Pri motion dec	-011		Sec motion dec
Notes	N L (See Notes, Linear solution)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	72.8		Precise sep	10		Constellation	Aquila		SAO	105744
Gaia DR2	1803012981518057472

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20087+1223	J 1338		2007	9	72	9.5	11.75	12.30		D	200843.69+122341.4
20087+1223	J 1338		2010	10	72	9.4	11.75	12.30		D	200843.69+122341.4
20087+1223	J 1338		2011	12	72	9.7	11.75	12.30		N D	200843.69+122341.4
20087+1223	J 1338		2013	14	72	9.8	11.75	12.30		NL	200843.69+122341.4
20087+1223	J 1338		2015	15	73	9.9	11.75	12.30		NL	200843.69+122341.4
20087+1223	J 1338		2016	16	73	10.0	11.75	12.30		NL	200843.69+122341.4

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