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Latest Details
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| Name |
QX Sge |
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| AAVSO UID |
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000-BFD-594 (No observations) |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
19 57 25.02 +20 39 59.4 |
| Galactic coord. |
59.197 -4.697 |
Other names
(Internal only)
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ASASSN-V J195936.77+204815.2 |
PSR 1957+20 |
PSR B1957+20 |
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PSR J1959+2048 |
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(Not logged in) Add name
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| Variability type |
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E/PSR |
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| Spectral type |
G: |
| Mag. range |
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20.4 - <23.0 V |
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| Discoverer |
-- |
| Epoch |
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| Outburst |
-- |
| Period |
0.381967 d (9.1672 h) |
| Rise/eclipse dur. |
-- |
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Remarks
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References
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Click reference title/citation to view in new window. Roll over index number to view submission details.
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1 |
Evidence for a Massive Neutron Star from a Radial-velocity Study of the
Companion to the Black-widow Pulsar PSR B1957+20 |
2011ApJ...728...95V |
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2 |
Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016) |
1992ApJ...400..638A |
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3 |
J.van Paradijs, J.Allington-Smith, P.Callanan, P.A.Charles, B.J.M.Hassall,
G.Machin, K.O.Mason, T.Naylor, A.P.Smale, Nature 334, No.6184,684,1988. |
1988Natur.334..684V |
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External Links
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Location
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Images
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Supporting Documents
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Revision History
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