| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Leo |
| Right ascension | 11h34m 21.94862s[1] |
| Declination | +03° 03′ 36.5931″[1] |
| Apparent magnitude (V) | 5.70[2] |
| Characteristics | |
| Spectral type | F5.5V[3] |
| B−V color index | 0.480±0.005[4] |
| Astrometry | |
| Radial velocity (Rv) | +4.775±0.0006[5] km/s |
| Proper motion (μ) | RA: −183.582[1] mas/yr Dec.: −102.903[1] mas/yr |
| Parallax (π) | 36.9527 ± 0.0817 mas[1] |
| Distance | 88.3 ± 0.2 ly (27.06 ± 0.06 pc) |
| Absolute magnitude (MV) | 3.53[2] |
| Details | |
| Mass | 1.29[2] M☉ |
| Radius | 1.38±0.04[1] R☉ |
| Luminosity | 2.990+0.009 −0.010[1] L☉ |
| Surface gravity (log g) | 4.22[3] cgs |
| Temperature | 6,461+93 −90[1] K |
| Metallicity [Fe/H] | −0.04[3] dex |
| Rotational velocity (v sin i) | 15.1[2] km/s |
| Age | 1.13[2] Gyr |
| Other designations | |
89 Leonis, BD+03°2521, FK5 2924, GJ 9367, HD 100563, HIP 56445, HR 4455, SAO 118929[6] | |
| Database references | |
| SIMBAD | data |
89 Leonis is a single[7] star in the equatorial constellationofLeo, the lion. It has a yellow-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 5.70.[2] Based upon parallax measurements, it is located at a distance of 88 light years from the Sun. The star has a high proper motion[8] and is moving further away with a radial velocity of +4.8 km/s.[5] It is a candidate member of the TW Hydrae stellar kinematic group.[8]
This is an F-type main-sequence star with a stellar classification of F5.5V.[3] It is an estimated 1.13[2] billion years old and is spinning with a rotation period of 7.73 days.[9] It shows evidence of a short-term activity cycle lasting 222.5±3.3 days.[9] The star has 1.3[2] times the mass of the Sun and 1.4[1] times the Sun's radius. It is radiating three[1] times the luminosity of the Sun from its photosphere at an effective temperature of 6,461 K.[1]
{{citation}}: CS1 maint: postscript (link)
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