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20127+1516
CHE 195

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

20127+1516 CHE 195

20^h 12^m 42.54^s +15° 15' 29.9" P.A. 64.00 sep 27.2 mag 11.48,14.18

Coord 2000	20127+1516		Discov num	CHE 195		Comp			Coord arcsec 2000	20 12 42.54 +15 15 29.9
Date first	1910		Date last	2015		Obs	12
Pa first	65		Pa last	64		P.A. Now (θ)	64°
Sep first	27.9		Sep last	27.2		Sep. Now (ρ)	27.2"
Mag pri	11.48		Mag sec	14.18		delta mag (ΔM)	2.7		Spectral class
Pri motion ra	+005		Sec motion ra	+006
Pri motion dec	-003		Sec motion dec	+000
Notes

rPM=0.527

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	63.6		Precise sep	27.152		Constellation	Aquila		SAO	105840
Tycho2	1618-01255-1		Gaia DR2	1808479890772038784		HD	355109

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20127+1516	CHE 195		2002	3	64	27.2	9.81	12.00		D	201242.54+151529.9
20127+1516	CHE 195		2008	4	64	27.7	9.81	12.00		D	201242.54+151529.9
20127+1516	CHE 195		2010	7	64	27.2	11.48	14.18			201242.54+151529.9
20127+1516	CHE 195		2015	8	64	27.1	11.48	14.18			201242.54+151529.9

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