RZ Piscium
RZ Piscium (or RZ Psc) is a UX Orionis type variable star 608 light-years (186 pc) away, in the constellation Pisces. Over the years, the star has been found to brighten and dim erratically, dimming by as much as a tenth of its usual luminosity. RZ Piscium has been found to emit large amounts of infrared radiation, suggesting the presence of a substantial mass of gas and dust orbiting the star, possibly from a "disrupted planet".
Dust and debris orbiting a star (artist's concept) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pisces |
| Right ascension | 01h 09m 42.0522s |
| Declination | +27° 57′ 01.910″ |
| Apparent magnitude (V) | 11.29 - 13.82 |
| Characteristics | |
| Spectral type | K0IV |
| Variable type | UX Ori |
| Astrometry | |
| Proper motion (μ) | RA: 27.544(28) mas/yr Dec.: −12.521(19) mas/yr |
| Parallax (π) | 5.3661 ± 0.0274 mas |
| Distance | 608 ± 3 ly (186.4 ± 1.0 pc) |
| Details | |
| RZ Piscium A | |
| Radius | 1.0 R☉ |
| Luminosity | 0.8 L☉ |
| Temperature | 5,600 K (5,330 °C); 5,620 K (5,350 °C); 5,870 K (5,600 °C) K |
| Age | 30 − 50 Myr |
| RZ Piscium B | |
| Mass | 0.12 M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
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