20177+4030 HDS2897

Coord 2000	20177+4030		Discov num	HDS2897		Comp			Coord arcsec 2000	20 17 44.44 +40 30 24.7
Date first	1991		Date last	2010		Obs	3
Pa first	256		Pa last	275		P.A. Now (θ)	275°
Sep first	0.3		Sep last	0.3		Sep. Now (ρ)	0.3"
Mag pri	8.46		Mag sec	10.76		delta mag (ΔM)	2.3		Spectral class	G5 (yellow)
Pri motion ra	+011		Sec motion ra
Pri motion dec	+001		Sec motion dec
Notes

Nature of this double is uncertain.

Precise pa	275.2		Precise sep	0.313		Constellation	Cygnus		SAO	49432
HIP	100037		Tycho2	3155-01552-1		Gaia DR2	08314219392		HD	193246
BD	BD+40 4098		Distance	273.22		Distance ly	891.24

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20177+4030	HDS2897		1991	1	256	0.3	8.46	10.76	G5	D	201744.44+403024.7
20177+4030	HDS2897		2009	2	269	0.3	8.46	10.76	G5	D	201744.44+403024.7
20177+4030	HDS2897		2010	3	275	0.3	8.46	10.76	G5	D	201744.44+403024.7

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