19453+3048 AG  237

Coord 2000	19453+3048		Discov num	AG  237		Comp			Coord arcsec 2000	19 45 20.11 +30 48 02.2
Date first	1901		Date last	2018		Obs	30
Pa first	145		Pa last	140		P.A. Now (θ)	140°
Sep first	1.9		Sep last	2.5		Sep. Now (ρ)	2.5"
Mag pri	8.82		Mag sec	9.61		delta mag (ΔM)	0.79		Spectral class	A5 (white)
Pri motion ra	+002		Sec motion ra	+004
Pri motion dec	-005		Sec motion dec	-005
Notes	T (Parallax indicates physical)

Visually invisible, K-band or other infrared star rPM=0.312 This double is physical.

Precise pa	139.5		Precise sep	2.491		Constellation	Cygnus		Tycho2	2656-01152-1
Gaia DR2	01926987648		HD	186789

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19453+3048	AG 237		1999	21	140	2.4	8.82	9.61	A5		194520.11+304802.2
19453+3048	AG 237		2006	23	140	2.4	8.82	9.61	A5		194520.11+304802.2
19453+3048	AG 237		2009	24	141	2.4	8.82	9.61	A5		194520.11+304802.2
19453+3048	AG 237		2011	26	141	2.4	8.82	9.61	A5		194520.11+304802.2
19453+3048	AG 237		2017	26	141	2.4	8.82	9.61	A5		194520.11+304802.2
19453+3048	AG 237		2018	28	141	2.4	8.82	9.61	A5		194520.11+304802.2

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