Mu Fornacis
Star in the constellation Fornax
From Wikipedia, the free encyclopedia
μ Fornacis (Latinised as Mu Fornacis) is a star in the southern constellation of Fornax. With an apparent visual magnitude of 5.27,[3] it is visible to the naked eye. The distance to this star, as determined by its annual parallax shift of 10.18 mas,[2] is around 320 light years.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Fornax[1] |
| Right ascension | 02h 12m 54.46962s[2] |
| Declination | −30° 43′ 25.7732″[2] |
| Apparent magnitude (V) | 5.27[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | A0 V[5] |
| U−B color index | −0.06[3] |
| B−V color index | −0.02[3] |
| Astrometry | |
| Radial velocity (Rv) | 10.0±3.7[6] km/s |
| Proper motion (μ) | RA: +14.10[2] mas/yr Dec.: +6.85[2] mas/yr |
| Parallax (π) | 10.18±0.24 mas[2] |
| Distance | 320 ± 8 ly (98 ± 2 pc) |
| Absolute magnitude (MV) | +0.31[1] |
| Details[7] | |
| Mass | 2.55±0.34 M☉ |
| Radius | 2.9±0.1 R☉ |
| Luminosity | 75±4 L☉ |
| Surface gravity (log g) | 3.92±0.06 cgs |
| Temperature | 9,977±136 K |
| Rotational velocity (v sin i) | 320[5] km/s |
| Age | 188[8] Myr |
| Other designations | |
| μ For, CD−31°882, FK5 78, GJ 89, HD 13709, HIP 10320, HR 652, SAO 193573[9] | |
| Database references | |
| SIMBAD | data |
This is an A-type main sequence star with a stellar classification of A0 V.[5] It is a Be star that displays "central quasi emission" (CQE) bumps in its spectrum due to a surrounding shell of material.[10] The star has an estimated 2.6 times the mass of the Sun and 2.9 times the Sun's radius.[7] Mu Fornacis is spinning rapidly with a projected rotational velocity of 320 km/s[5] and is around 188 million years old.[8] It radiates 75 times the solar luminosity from its outer atmosphere at an effective temperature of 9,977 K.[7]
Mu Fornacis appears to be emitting an infrared excess at a wavelength of 22 μm, which could be due to an orbiting debris disk.[11]