Calvera (X-ray source)
| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Ursa Minor |
| Right ascension | 14h 12m 56.0s |
| Declination | +79° 22′ 04″ |
| Apparent magnitude (V) | ? |
| Distance | 625 ± 375 ly (190 ± 110 pc) |
| Spectral type | X |
| Other designations | |
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RX J1412.9+7922
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In astronomy, Calvera is a nickname—based on the villain in the 1960 film The Magnificent Seven—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. It is one of the closest of its kind to Earth.
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