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Latest Details
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Name
  HK Sco  
AAVSO UID
000-BBY-148 (540 observations)  
Constellation
Scorpius Sequence
J2000.0
16 54 41.04 -30 23 06.9  (253.67100 -30.38525) Search nearby
B1950.0 16 51 29.88 -30 18 18.0
Proper motion
RA: -6.1 +/- 2.2 mas/yDec: -7.8 +/- 3.8 mas/ySource: UCAC4
Galactic coord. 352.485 +8.266
Other names

(Internal only)
2MASS J16544103-3023067 AAVSO 1648-30C ASAS J165441-3023.1
ASAS J165441-3023.2 ASASSN-V J165441.04-302307.3 EM* AS 212
GSC 07359-00582 HV 4493 Hen 3-1280
MHA 71-6 SS73 68  
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Variability type
ZAND
Spectral type M1-M3.5e
Mag. range
11.7 - 14.7: V
Discoverer --
Epoch
23 Apr 2001 (HJD 2452023) Ephemeris
Outburst --
Period 458 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto J-K= 1.32; B-V= 1.51.
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References
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1 M. Gromadzki, J. Mikolajewska, I. Soszynski, 2013, arXiv:1312.6063
[astro-ph.SR]
2013arXiv1312.6063G
2 The All Sky Automated Survey 2002AcA....52..397P
3 G.Williams, ApJ Suppl 53, N3, 523, 1983. 1983ApJS...53..523W
4 H.H.Swope, ApJ 94, 140, 1941. 1941ApJ....94..140S
External Links
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 9.02H = 8.12K = 7.70J - K = 1.32
AllWISE W1 = 7.70W2 = 7.69W3 = 7.37W4 = 6.83W1 - W2 = 0.01W3 - W4 = 0.54
APASS-DR9 B = 15.35V = 13.84g' = 14.52r' = 12.92i' = 11.71B - V = 1.51
Images
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Supporting Documents
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Revision History
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4 Admin, VSX 2013-12-27 05:48 UTC Update from [2013arXiv1312.6063G].
3 Otero, Sebastian Alberto 2012-08-30 19:11 UTC Range from ASAS-3 data. Spectral type from Skiff (2012). UCAC4 position.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.