PSR J1719−1438 b
PSR J1719−1438 b is an extrasolar planet that was discovered on August 25, 2011, in orbit around PSR J1719−1438, a millisecond pulsar. The pulsar planet is most likely composed largely of crystalline carbon but with a density far greater than diamond. PSR J1719-1438 b orbits so closely to its host star that its orbit would fit inside the Sun. The existence of such carbon planets had been theoretically postulated.
PSR J1719-14 b | |
| Discovery | |
|---|---|
| Discovered by | Matthew Bailes et al. |
| Discovery site | Melbourne, Australia |
| Discovery date | August 25, 2011 |
| Pulsar timing | |
| Orbital characteristics | |
| 0.004 AU (600,000 km) | |
| Eccentricity | < 0.06 |
| 0.090706293 d 2.176951032 h | |
| 2,455,235.51652439 | |
| Star | PSR J1719−1438 |
| Physical characteristics | |
Mean radius | ≤0.4 RJ ≤4 R🜨 |
| Mass | ~1.02 MJ (~330 ME) |
Mean density | ≥23 g cm−3 |
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