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20321+1511
A 1677

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

20321+1511 A 1677

20^h 32^m 07.67^s +15° 11' 12.2" P.A. 184.00 sep 1.3 mag 8.14,10.90 Sp G0 dist. 96.9 pc (316.09 l.y.)

Coord 2000	20321+1511		Discov num	A 1677		Comp			Coord arcsec 2000	20 32 07.67 +15 11 12.2
Date first	1907		Date last	2016		Obs	20
Pa first	170		Pa last	184		P.A. Now (θ)	184°
Sep first	1.0		Sep last	1.3		Sep. Now (ρ)	1.3"
Mag pri	8.14		Mag sec	10.90		delta mag (ΔM)	2.76		Spectral class	G0 (yellow)
Pri motion ra	+102		Sec motion ra	+101
Pri motion dec	+116		Sec motion dec	+112
Notes

rPM=0.027 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	183.9		Precise sep	1.32		Constellation	Delphinus		SAO	106210
HIP	101315		Tycho2	1633-00596-1		Gaia DR2	1804783160869679872		HD	195651
BD	BD+14 4335		Distance	96.9		Distance ly	316.09

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20321+1511	A 1677		1991	16	181	1.3	8.14	10.90	G0		203207.67+151112.2
20321+1511	A 1677		2016	17	184	1.3	8.14	10.90	G0		203207.67+151112.2

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