16319-2456 DCH 97 Ba,Bb

Coord 2000	16319-2456		Discov num	DCH  97		Comp	Ba,Bb		Coord arcsec 2000	16 31 52.98 -24 56 24.6
Date first	2001		Date last	2003		Obs	2
Pa first	84		Pa last	93.3		P.A. Now (θ)	93.3°
Sep first	0.1		Sep last	0.142		Sep. Now (ρ)	0.142"
Mag pri	13.00		Mag sec	12.80		delta mag (ΔM)	0.2		Spectral class
Pri motion ra	+009		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			16 31 52 -24 56 15	HDP 2 AB	2004	6	241	3.0	12.16	12.13	0.03
Show			16 31 52 -24 56 15	CON 29 AC	2004	2	127	14.7	12.80
Show			16 31 53 -24 56 25	DCH 97 Ba,Bb	2003	2	93	0.1	13.00	12.80	0.20		<===

Quadruple system
3 estimated visually detectable stars in this system

Constellation

Scorpius

discov_num	notes	refcode
HDP 2	HCH 7.

refcode	metd	author	reference
Con2008	Ci j	Connelley, M.S., Reipurth, B., & Tokunaga, A.T.	2008AJ....135.2496C
Con2008		AJ 135, 2496, 2008
Con2008		(IR duplicity survey among YSOs. Note that primary magnitudes in summary lines
Con2008		are K-band magnitudes of IRAS objects containing these pairs, so are in general
Con2008		severe overestimates of these objects' brightnesses)
Con2008b	-	Connelley, M.S., Reipurth, B., & Tokunaga, A.T.	2008AJ....135.2526C
Con2008b		AJ 135, 2526, 2008 (statistical analysis; no data)
Dch1999a	A -	Duchene, G., Bouvier, J. & Simon, T	1999A&A...343..831D
Dch1999a	+S	A&A 343, 831, 1999
Dch1999b	Xs -	Duchene, G., Monin, J.-L., Bouvier, J., & Menard, F.	1999A&A...351..954D
Dch1999b	+Pa	A&A 351, 954, 1999 (see also A&A 330, 310, 1998)	1998A&A...330..310D
Dch2001	A -	Duchene, G., Simon, T., Eisloffel, J., & Bouvier, J.	2001A&A...379..147D
Dch2001		A&A 379, 147, 2001
Dch2002	A j	Duchene, G. Ghez, A.M. & McCabe, C.	2002ApJ...568..771D
Dch2002	+S	ApJ 568, 771, 2002
Dch2003	S+ j	Duchene, G., Ghez, A.M., McCabe, C., & Weinberger, A.J.	2003ApJ...592..288D
Dch2003	+A	ApJ 592, 288, 2003
Dch2003	+orb
Dch2003b	Kd -	Duchene, G, Menard, F., Stapelfeldt, K., & Duvert, G.	2003A&A...400..559D
Dch2003b		A&A 400, 559, 2003
Dch2004	Ci j	Duchene, G., Bouvier, J., Bontemps, S., Andre, P. & Motte, F.	2004A&A...427..651D
Dch2004		A&A 427, 651, 2004
Dch2004b	A j	Duchene, G., McCabe, C., Ghez, A.M., & Macintosh, B.A.	2004ApJ...606..969D
Dch2004b		ApJ 606, 969, 2004
Dch2005	A j	Duchene, G., Ghez, A.M., McCabe, C., & Ceccarelli, C.	2005ApJ...628..832D
Dch2005		ApJ 628, 832, 2005
Dch2006	orb j	Duchene, G., Beust, H., Adjali, F., Konopacky, Q.M., & Ghez, A.M.	2006A&A...457L...9D
Dch2006	+Si	A&A 457, L9, 2006
Dch2006	+A
Dch2007	A j	Duchene, G., Bontemps, S., Bouvier, J., Andre, P., Djupvik, A.A., & Ghez, A.M.	2007A&A...476..229D
Dch2007		A&A 476, 229, 2007
Dch2010	A -	Duchene, G., McCabe, C., Pinte, C., Stapelfeldt, K.R., Menard, F., Duvert, G.,	2010ApJ...712..112D
Dch2010	+Al	Ghez, A.M., Maness, H.L., Bouy, H., Barrado y Navascues, D., Morales-Calderon, M.,
Dch2010	+K	Wolf, S., et al.
Dch2010	+Kd	ApJ 712, 112, 2010
Dch2018	Am j	Duchene, G., Lacour, S., Moraux, E., Goodwin, S. & Bouvier, J.	2018MNRAS.478.1825D
Dch2018		MNRAS 478, 1825, 2018
Dch2023	A j	Duchene, G., Oon, J.T., De Rosa, R.J., Kantorski, P., Coy, B., Wang, J.J., Thomas,	2023MNRAS.519..778D
Dch2023		S., Patience, J., Pueyo, L., Nielsen, E.L. & Konopacky, Q.
Dch2023		MNRAS 519, 778, 2023
Hdp1994	Ci -	Hodapp, K.	1994ApJS...94..615H
Hdp1994		ApJS 94, 615, 1994 (no data)

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
16319-2456	DCH 97	Ba,Bb	2003	1	93	0.1	13.00	12.80		DK	163152.13-245615.2

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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

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