Other designations SNR G260.4-03.4 Spectral class S Right ascension 08 24 07 Constellation Puppis | Event type Supernova remnant Date 1971 Declination -42° 59' 48 | |
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Similar RX J0822‑4300, Vela Supernova Remnant, G2920+018, Cassiopeia A, RX J08520‑4622 | ||
A tour of puppis a
Puppis A is a supernova remnant (SNR) about 100 lightyears in diameter and roughly 6500–7000 lightyears distant. Its apparent angular diameter is about 1 degree. The light of the supernova explosion reached Earth approximately 3700 years ago. Although it overlaps the Vela Supernova Remnant, it is four times more distant.
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A hypervelocity neutron star known as the Cosmic Cannonball has been found in this SNR.
Puppis X-1
Puppis X-1 (Puppis A) was discovered by a Skylark flight in October 1971, viewed for 1 min with an accuracy ≥ 2 arcsec, probably at 1M 0821-426, with Puppis A (RA 08h 23m 08.16s Dec -42° 41′ 41.40″) as the likely visual counterpart.
Puppis A is one of the brightest X-ray sources in the X-ray sky. Its X-ray designation is 2U 0821-42.
References
Puppis A Wikipedia(Text) CC BY-SA