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Name
  NSV 20859  
AAVSO UID
--  
Constellation
Scorpius Sequence
J2000.0
16 56 05.20 -40 20 58.0  (254.02167 -40.34944) Search nearby
B1950.0 16 52 37.10 -40 16 14.8
Galactic coord. 344.840 +1.829
Other names

(Internal only)
2MASS J16560521-4020576 ALS 3843 ASAS J165605-4021.0
CD-40 10956 CPD-40 7624 GSC 07872-01003
HD 152590 LS 3843 NGC 6231 331
PPM 322423 SAO 227460 TIC 341258182
TYC 7872-1003-1 Trumpler 24 392 UCAC4 249-102149
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Variability type
E:
Spectral type O7.5V
Mag. range
8.44 - ? V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Eccentric system. Min II = 8.46V at phase 0.48.
2 2004IBVS.5495....1O Min II = 8.46:V.
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References
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1 Bob Nelson's O-C files, 2016 --
2 E.V. Kazarovets, N.N. Samus, O.V. Durlevich, N.N. Kireeva, E.N. Pastukhova,
2008, IBVS 5863
2008IBVS.5863....1K
3 S.A.Otero, F.Claus, IBVS N5495, 2004. 2004IBVS.5495....1O
4 Pojmanski, G., 2002, The All Sky Automated Survey 2002AcA....52..397P
5 Ch.L.Perry, G.Hill, D.M.Christodoulou, AsAp Suppl 90, No.2, 195, 1991. 1991A&AS...90..195P
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Supporting Documents
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Revision History
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5 Otero, Sebastian Alberto 2021-06-12 04:26 UTC Epoch and minimum magnitude from ASAS-3 data. Gaia EDR3 position.
4 Admin, VSX 2010-01-05 04:43 UTC Update from the GCVS version of November 2009.
3 Admin, VSX 2008-12-03 03:59 UTC Primary name changed to GCVS designation [2008IBVS.5863....1K]
2 Admin, VSX 2007-03-23 19:55 UTC Update from [2004IBVS.5495....1O].
1 Admin, VSX 2005-12-18 01:33 UTC Initial database population.