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Latest Details
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Name
  NSV 20804  
AAVSO UID
--  
Constellation
Scorpius Sequence
J2000.0
16 54 01.80 -41 48 23.0  (253.50750 -41.80639) Search nearby
B1950.0 16 50 31.00 -41 43 31.0
Proper motion
RA: -0.97 +/- 0.67 mas/yDec: -3.19 +/- 0.43 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 343.463 +1.216
Other names

(Internal only)
CD-41 11024 CPD-41 7716 HD 152234
HIP 82676 HR 6260 SAO 227377
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Variability type
ACYG:
Spectral type B0.5Ia
Mag. range
5.43 - 5.48 V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto 125 day period SB2 system (sep. 0.9 mas). Two more distant companions 0.5" (B) and 5.5" (C) away (2014ApJS..215...15S).
2 GCVS Team X-ray source. Hp = 5.50 - 5.53 [The Hipparcos and Tycho Catalogues, Vol.11 and Vol.17, CD-ROM No.1, SP-1200, ESA, 1997.]. AB: 5.6, 7.1, 0'.5, 77deg (1990); C: 13.8, 5", 101deg; D: 13.7, 18", 128deg; E: 13., 21", 282deg; F: 7.3, 57", 21deg, CoD-41 11025; FG: 7.3, 13.0, 6", 47deg; FH: 7.3, 10.3, 9", 300deg.
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References
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1 Sana, H.; et al., 2014, Southern Massive Stars at High Angular Resolution:
Observational Campaign and Companion Detection
2014ApJS..215...15S
2 B.Gronbech, E.H.Olsen, AsAp Suppl 25, No.2, 213, 1976. 1976A&AS...25..213G
External Links
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Location    Go   
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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 = 5.07H = 4.93K = 4.77J - K = 0.30
AllWISE W1 = 4.54W2 = 4.39W3 = 4.65W4 = 4.40W1 - W2 = 0.15W3 - W4 = 0.26
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 16 54 01.80 -41 48 23.0 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Stellar Association Membership
 NGC 6231 Open Cluster 2012A&A...548A..97Z
Revision History
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2 Otero, Sebastian Alberto 2016-04-13 05:21 UTC Remark from 2014ApJS..215...15S. Type and range from HIPPARCOS and GCPD data.
1 Admin, VSX 2005-12-18 01:33 UTC Preserved original object data.