20111+4131 HJ 1491

Coord 2000	20111+4131		Discov num	HJ 1491		Comp			Coord arcsec 2000	20 10 10.59 +41 29 56.6
Date first	1828		Date last	2018		Obs	19
Pa first	302		Pa last	299		P.A. Now (θ)	299°
Sep first	2.5		Sep last	4.8		Sep. Now (ρ)	4.8"
Mag pri	9.56		Mag sec	9.62		delta mag (ΔM)	0.06		Spectral class	F5 (yellow-white)
Pri motion ra	+013		Sec motion ra	+014
Pri motion dec	+007		Sec motion dec	+008
Notes	N V (See Notes, Proper motion indicates physical)

Visually invisible, K-band or other infrared star rPM=0.088 (< 0.3, Physical double) This double is physical.

Precise pa	298.8		Precise sep	4.773		Constellation	Cygnus		Tycho2	3159-00927-1
Gaia DR2	53598782592		HD	228090

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20111+4131	HJ 1491		1937	5	118	4.5	10.30	10.30			201160.00+413100.0
20111+4131	HJ 1491		2008	13	298	4.7	9.56	9.62		N D	201010.59+412956.6
20111+4131	HJ 1491		2010	14	298	4.7	9.56	9.62		N D	201010.59+412956.6
20111+4131	HJ 1491		2016	16	298	4.7	9.56	9.62	F5	N	201010.59+412956.6
20111+4131	HJ 1491		2018	18	299	4.8	9.56	9.62	F5	N	201010.59+412956.6

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