08169+5503 LDS 3780 AB

Coord 2000	08169+5503		Discov num	LDS3780		Comp	AB		Coord arcsec 2000	08 16 56.29 +55 02 22.1
Date first	1960		Date last	2015		Obs	7
Pa first	31		Pa last	33.8		P.A. Now (θ)	33.8°
Sep first	98.0		Sep last	99.171		Sep. Now (ρ)	99.171"
Mag pri	9.43		Mag sec	17.30		delta mag (ΔM)	7.87		Spectral class	F8+M2.4 (yellow-white/red)
Pri motion ra	-068		Sec motion ra	-019
Pri motion dec	-108		Sec motion dec	-107
Notes	N (See Notes)

rPM=0.384 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		26752	08 16 56 +55 02 22	LDS 3780 AB	2015	7	34	99.2	9.43	17.30	7.87		<===
Show			08 17 03 +55 03 45	LDS 3780 BC	2016	11	110	31.0	17.30	17.50	0.20

Triple system
3 estimated visually detectable stars in this system

Constellation	Lynx		SAO	26752		Tycho2	3799-00311-1		Gaia DR2	1033058862980484736
HD	237690		DM	BD+55 1263

discov_num	notes	refcode
LDS3780	BC: SLW 231.

refcode	metd	author	reference
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
08169+5503	LDS3780	AB	1998	2	34	98.5	9.43	17.30		D	081656.29+550222.1
08169+5503	LDS3780	AB	2003	3	34	99.2	9.43	17.30		D	081656.29+550222.1
08169+5503	LDS3780	AB	2015	4	34	99.2	9.43	17.30	F8+M2.4	N	081656.29+550222.1

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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