15529+1526 MUG 21 AB

Coord 2000	15529+1526		Discov num	MUG  21		Comp	AB		Coord arcsec 2000	15 52 56.28 +15 25 50.5
Date first	2012		Date last	2018		Obs	7
Pa first	169		Pa last	169.5		P.A. Now (θ)	169.5°
Sep first	2.5		Sep last	2.519		Sep. Now (ρ)	2.519"
Mag pri	5.10		Mag sec	9.80		delta mag (ΔM)	4.7		Spectral class	K0IV (yellow-orange)
Pri motion ra	-056		Sec motion ra
Pri motion dec	-021		Sec motion dec
Notes	N K (See Notes, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			15 52 56 +15 25 50	MUG 21 AB	2018	7	170	2.5	5.10	9.80	4.70		<===
Show			15 52 56 +15 25 50	MUG 21 Ba,Bb	2018	4	111	0.1	10.50	10.50	0.00

Triple system
2 estimated visually detectable stars in this system

Constellation

Serpens

Gaia DR2

1193193836691820032

discov_num	notes	refcode
MUG 21	Mugrauer & Ginski (2015) note that the B component is itself a close
	binary, with projected separation about 4.3 +/- 0.7 au. The orbital
	period is estimated as 8.5 +/- 2 yr, assuming a total system mass of
	1.12 Msun.	Mug2015

refcode	metd	author	reference
Mug2015	A j	Mugrauer, M. & Ginski, C.	2015MNRAS.450.3127M
Mug2015		MNRAS 450, 3127, 2015

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
15529+1526	MUG 21	AB	2017	3	169	2.5	5.10	9.80	K0IV	N K	155256.28+152550.5
15529+1526	MUG 21	AB	2018	5	170	2.5	5.10	9.80	K0IV	N K	155256.28+152550.5

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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