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Details for Revision 4
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Name
  V4580 Sgr  
AAVSO UID
000-BDB-765 (233 observations)  
Constellation
Sagittarius Sequence
J2000.0
18 08 27.54 -36 58 44.3  (272.11475 -36.97897) Search nearby
B1950.0 18 05 03.52 -36 59 13.9
Galactic coord. 355.385 -8.148
Other names

(Internal only)
AAVSO 1801-36B SAX J1808.4-3658 XTE J1808-369
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Variability type
XN+XP
Spectral type --
Mag. range
16.6 - 21.4 V
Discoverer --
Epoch
--
Outburst --
Period 0.083902 d  (2.0136 h)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Known orbital period given. Photometric period found is 0.083934 d. Companion is likely a brown dwarf.
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References
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1 Multi-epoch Analysis of Pulse Shapes from the Neutron Star SAX J1808.4-3658 2011ApJ...726...56M
2 Multi-epoch Analysis of Pulse Shapes from the Neutron Star SAX J1808.4-3658 2011ApJ...726...56M
3 An Accurate Determination of the Optical Periodic Modulation in the X-Ray
Binary SAX J1808.4-3658		 2009ApJ...694.1115W
4 IAU Circ No.6885, 1998. 1998IAUC.6885....1R
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Supporting Documents
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Revision History
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6 Otero, Sebastian Alberto 2011-05-23 21:02 UTC Type corrected.
5 Otero, Sebastian Alberto 2011-05-22 00:27 UTC Type LMXB from reference and XND to describe the outbursting nature of the system.
4 Otero, Sebastian Alberto 2011-05-17 19:47 UTC Reference added.
3 Otero, Sebastian Alberto 2011-05-17 19:45 UTC Primary record creation. Cross-identifications and reference added. Minimum V-magnitude derived from r' photometry and VRI colours.
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.

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