Calvera (X-ray source)
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Epoch J2000.0 Equinox J2000.0
|Right ascension||14h 12m 56.0s|
|Declination||+79° 22′ 04″|
|Apparent magnitude (V)||?|
|Distance||625 ± 375 ly
(190 ± 110 pc)
In astronomy Calvera is the nickname of an X-ray source known as 1RXS J141256.0+792204 in the ROSAT All-Sky Survey Bright Source Catalog (RASS/BSC). It lies in the constellation Ursa Minor and is identified as an isolated neutron star.
- Rutledge, Robert; Fox, Derek; Shevchuk, Andrew.(2008) "Discovery of an Isolated Compact Object at High Galactic Latitude", The Astrophysical Journal, American Astronomical Society, Vol. 672, Issue 2, pp. 1137-1143. Retrieved on 2009-11-14.
- Pennsylvania State University. Possible closest neutron star to Earth found. 20 August 2007. Retrieved on 2007-08-21.
- bbc.co.uk. Rare dead star found near Earth. 20 August 2007. Retrieved on 2007-08-21.
- Space.com. Astronomers Find Closest Neutron Star. 20 August 2007. Retrieved on 2007-08-21.
- SIMBAD query result: RX J1412.9+7922 -- X-ray source
- Universe Today, Closest Neutron Star Discovered
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