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Latest Details
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Name
  HD 49798  
AAVSO UID
000-BCZ-478 (63 observations)  
Constellation
Puppis Sequence
J2000.0
06 48 04.70 -44 18 58.4  (102.01958 -44.31622) Search nearby
B1950.0 06 46 34.79 -44 15 33.2
Proper motion
RA: -4.73 +/- 0.53 mas/yDec: 5.39 +/- 0.52 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 253.707 -19.141
Other names

(Internal only)
1RXS J064804.4-441905 2MASS J06480469-4418584 AAVSO_DES 0645-44
ALS 15821 ASAS J064805-4419.0 ASASSN-V J064804.69-441859.4
GSC 07639-01289 HIP 32602 PPM 311129
RX J0648.0-4418 TIC 170203297 TYC 7639-1289-1
WISEA J064804.69-441858.3    
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Variability type
HMXB+ELL
Spectral type sdO6p+WD
Mag. range
8.27 - 8.28 V
Discoverer --
Epoch
05 Apr 2005 (HJD 2453465.58) Ephemeris
Outburst --
Period 1.54764 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto B-V= -0.28. Spin period 13.18 s.
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References
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1 S. Mereghetti, 2013, arXiv:1302.4634 [astro-ph.HE] 2013arXiv1302.4634M
2 Pojmanski, G., 2002, The All Sky Automated Survey 2002AcA....52..397P
3 Thackeray, A. D., 1970, The spectroscopic orbit of the O-type subdwarf HD
49798		 1970MNRAS.150..215T
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 = 8.86H = 9.01K = 9.07J - K = -0.21
AllWISE W1 = 9.15W2 = 9.22W3 = 9.29W4 = 9.04W1 - W2 = -0.07W3 - W4 = 0.25
APASS-DR9 B = 8.01V = 8.24g' = 9.02r' = 8.51i' = 8.81B - V = -0.23
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 06 48 04.70 -44 18 58.4 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Otero, Sebastian Alberto 2013-02-22 03:07 UTC Period and epoch from ASAS-3 data. Range from ASAS-3, GCPD and HIPPARCOS data. HIPPARCOS position.
2 Admin, VSX 2013-02-21 01:59 UTC Update from [2013arXiv1302.4634S].
1 Admin, VSX 2009-10-23 00:50 UTC Initial upload.

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