16275-2431 DCH 77 AB

Coord 2000	16275-2431		Discov num	DCH  77		Comp	AB		Coord arcsec 2000	16 27 27.38 -24 31 16.6
Date first	2001		Date last	2008		Obs	3
Pa first	313		Pa last	314.3		P.A. Now (θ)	314.3°
Sep first	8.7		Sep last	8.78		Sep. Now (ρ)	8.78"
Mag pri	9.32		Mag sec	15.57		delta mag (ΔM)	6.25		Spectral class
Pri motion ra	-019		Sec motion ra
Pri motion dec	-299		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			16 27 27 -24 31 17	CST 10 Aa,Ab	2000	2	353	0.5	10.00	10.30	0.30
Show			16 27 27 -24 31 17	DCH 77 AB	2008	3	314	8.8	9.32	15.57	6.25		<===

Triple system
2 estimated visually detectable stars in this system

Constellation

Ophiuchus

Gaia DR2

6049145812156155392

discov_num	notes	refcode
DCH 77	Primary is young stellar object VSSG 25 = WL 13. The B component is a
	young brown dwarf, mass ~30 Mjup.	ShC2011

refcode	metd	author	reference
ShC2011	Hi j	Shirono, C., Itoh, Y., & Oasa, Y.	2011PASJ...63.1071S
ShC2011	+Ci	PASJ 63, 1071, 2011
ShC2011		(JHK mags for primaries from 2MASS. Dates for Spitzer measures extracted from
ShC2011		Spitzer/IRAC Archive. Coarse date of 2008 given for Subaru data unless actual
ShC2011		observation date listed in paper.)

idgroup	discov	author
1	CST	Costa, A., Jessop, N.E., Yun, J.L., Santos, C.A., Ward-Thompson, D., & Casali, M.
2	DCH	Duchene, G., Bouvier, J. & Simon, T
25	DCH	Duchene, G., McCabe, C., Pinte, C., Stapelfeldt, K.R., Menard, F., Duvert, G.,
25	DCH	Ghez, A.M., Maness, H.L., Bouy, H., Barrado y Navascues, D., Morales-Calderon, M.,
25	DCH	Wolf, S., et al.
28	DCH	Duchene, G., Oon, J.T., De Rosa, R.J., Kantorski, P., Coy, B., Wang, J.J., Thomas,
28	DCH	S., Patience, J., Pueyo, L., Nielsen, E.L. & Konopacky, Q.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
16275-2431	DCH 77	AB	2001	1	313	8.7	9.32	15.57		DK	162727.38-243116.6
16275-2431	DCH 77	AB	2008	3	314	8.8	9.32	15.57		N K	162727.38-243116.6

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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