17373+7105 LDS 1872

Coord 2000	17373+7105		Discov num	LDS1872		Comp			Coord arcsec 2000	17 37 26.88 +71 03 55.4
Date first	1963		Date last	2016		Obs	6
Pa first	78		Pa last	70.6		P.A. Now (θ)	70.6°
Sep first	4.0		Sep last	3.879		Sep. Now (ρ)	3.879"
Mag pri	12.40		Mag sec	14.48		delta mag (ΔM)	2.08		Spectral class
Pri motion ra	+234		Sec motion ra	+234
Pri motion dec	-410		Sec motion dec	-410
Notes	N (See Notes)

Nature of this double is uncertain.

Constellation

Draco

discov_num	notes	refcode
LDS1872	NLTT 45240/45242	Chm2004

refcode	metd	author	reference
Chm2004	E -	Chaname, J. & Gould, A.	2004ApJ...601..289C
Chm2004		ApJ 601, 289, 2004
Chm2004		(Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004		versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004		identical to discovery observations - predominantly close pairs - were assumed
Chm2004		not new observations, so not included in WDS. Similar concerns when primary and
Chm2004		secondary magnitudes or proper motions were the same.)

idgroup	discov	author
1	LDS	Luyten p.m. catalog (from additional DD list)

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
17373+7105	LDS1872		1990	3	76	4.3	12.40	14.48			173726.64+710357.1
17373+7105	LDS1872		1999	4	77	3.6	12.40	14.48		N	173726.64+710357.1
17373+7105	LDS1872		2015	5	71	3.9	12.40	14.48		N	173726.88+710355.4
17373+7105	LDS1872		2016	6	71	3.9	12.40	14.48		N	173726.88+710355.4

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS