18187-1347 DCH 29 CD

Coord 2000	18187-1347		Discov num	DCH  29		Comp	CD		Coord arcsec 2000	18 18 40.77 -13 46 51.9
Date first	1998		Date last	2017		Obs	2
Pa first	185		Pa last	184.7		P.A. Now (θ)	184.7°
Sep first	1.1		Sep last	1.08		Sep. Now (ρ)	1.08"
Mag pri	9.64		Mag sec	10.63		delta mag (ΔM)	0.99		Spectral class	B1V (blue-white)
Pri motion ra	-001		Sec motion ra
Pri motion dec	+002		Sec motion dec
Notes	K (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			18 18 40 -13 46 56	DCH 28 AB	1998	1	225	0.8	11.76	13.96	2.20
Show			18 18 41 -13 46 52	DCH 29 CD	2017	2	185	1.1	9.64	10.63	0.99		<===
Show			18 18 42 -13 46 43	DCH 30 EF	1998	1	136	0.7	11.57	14.15	2.58
Show			18 18 42 -13 46 52	DCH 31 GH	1998	1	253	1.2	10.64	15.09	4.45
Show			18 18 42 -13 47 13	DCH 32 IJ	1998	1	7	0.9	13.36	15.41	2.05

Decuple system
10 estimated visually detectable stars in this system

Constellation

Serpens

Gaia DR2

4146600640059736704