20329+1803 HJ 2977

Coord 2000	20329+1803		Discov num	HJ 2977		Comp			Coord arcsec 2000	20 32 51.98 +18 02 30.7
Date first	1831		Date last	2018		Obs	18
Pa first	332		Pa last	317		P.A. Now (θ)	317°
Sep first	15.5		Sep last	20.1		Sep. Now (ρ)	20.1"
Mag pri	9.60		Mag sec	10.45		delta mag (ΔM)	0.85		Spectral class	M2 (red)
Pri motion ra	+008		Sec motion ra	-007
Pri motion dec	-009		Sec motion dec	-009
Notes

rPM=1.246 This double is not physical.

Precise pa	316.6		Precise sep	20.11		Constellation	Delphinus		SAO	106223
Tycho2	1637-01145-1		Gaia DR2	83081431808		HD	352486

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20329+1803	HJ 2977		2004	11	317	19.8	9.60	10.45	M2	D	203251.98+180230.7
20329+1803	HJ 2977		2010	13	318	17.8	9.60	10.45	M2		203251.98+180230.7
20329+1803	HJ 2977		2016	13	317	19.7	9.60	10.45	M2		203251.98+180230.7
20329+1803	HJ 2977		2018	18	317	20.1	9.60	10.45	M2		203251.98+180230.7

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