18300+0113 HCH 9 AB

Coord 2000	18300+0113		Discov num	HCH   9		Comp	AB		Coord arcsec 2000	18 29 57.80 +01 12 52.0
Date first	2000		Date last	2005		Obs	4
Pa first	354		Pa last	353.6		P.A. Now (θ)	353.6°
Sep first	5.2		Sep last	5.19		Sep. Now (ρ)	5.19"
Mag pri	9.80		Mag sec	10.40		delta mag (ΔM)	0.6		Spectral class
Pri motion ra	-020		Sec motion ra
Pri motion dec	+055		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 29 58 +01 12 52	DCH 100 Aa,Ab	2005	1	227	0.2	11.80	10.60	1.20
Show			18 29 58 +01 12 52	HCH 9 AB	2005	4	354	5.2	9.80	10.40	0.60		<===
Show			18 29 58 +01 12 57	DCH 100 Ba,Bb	2005	1	109	2.5	10.40	17.70	7.30
Show			18 29 58 +01 12 52	DCH 98 AC	2005	2	12	4.4	9.80	8.50	1.30
Show			18 29 58 +01 13 00	DCH 98 Ca,Cb	2005	1	92	0.1	8.70	10.30	1.60

Sextuple system
3 estimated visually detectable stars in this system

Constellation

Serpens