Sakurai's Object facts for kids
| Observation data Epoch J2000.0 (ICRS) Equinox J2000.0 (ICRS) |
|
|---|---|
| Constellation | Sagittarius |
| Right ascension | 17h 52m 32.69s |
| Declination | −17° 41′ 08.0″ |
| Apparent magnitude (V) | 10.90 - 21 |
| Characteristics | |
| Spectral type | variable |
| Apparent magnitude (J) | 11.555 ± 0.022 |
| U−B color index | +0.27 |
| B−V color index | +0.81 |
| V−R color index | +0.57 |
| Astrometry | |
| Radial velocity (Rv) | −170 ± 30 km/s |
| Distance | 1800-5000 pc |
| Details | |
| Mass | 0.6 M☉ |
| Luminosity | ~10,000 L☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
Sakuri's Object, also known as V4334 Sagittarii, is a star in the Sagittarius constellation.
It is thought it was a white dwarf that swelled and became a red giant. It is at the center of a planetary nebula. Sakurai's Object and other similar stars are expected to end up as helium-rich white dwarfs. They go through a "born-again" giant phase back to the white dwarf cooling track.
Sakuri's Object was discovered in 1996.
Images for kids
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A visual band light curve for V4334 Sagittarii, adapted from Duerbeck (2002)
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Sakurai's Object, by Hilmar Duerbeck, ESO
See also
In Spanish: Objeto de Sakurai para niños
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Sakurai's Object Facts for Kids. Kiddle Encyclopedia.