Binary star system in the constellation of Leo
35 Leonis
Approximate location of 35 Leonis (circled) [1] |
Observation data
Epoch J2000 Equinox J2000
|
| Constellation
|
Leo[1][note 1]
|
| Right ascension
|
10h 16m 32.289s[2]
|
| Declination
|
+23° 30′ 11.206″[2]
|
| Apparent magnitude (V)
|
5.97[1]
|
| Characteristics
|
| 35 Leonis A
|
| Evolutionary stage
|
Main-sequence star to subgiant
|
| Spectral type
|
G1.5IV–V[3]
|
| Apparent magnitude (U)
|
6.8[3]
|
| Apparent magnitude (B)
|
6.6[3]
|
| Apparent magnitude (R)
|
5.6[3]
|
| Apparent magnitude (G)
|
5.8[3]
|
| Apparent magnitude (J)
|
4.8[3]
|
| Apparent magnitude (H)
|
4.5[3]
|
| Apparent magnitude (K)
|
4.3[3]
|
| B
|
| Evolutionary stage
|
Red dwarf
|
| Apparent magnitude (K)
|
8.4[4]
|
| Astrometry |
|---|
|
|---|
| Radial velocity (Rv) | −35.25±0.79[2] km/s |
| Proper motion (μ) | RA: −200.342±0.259 mas/yr[2]
Dec.: 32.03±0.32 mas/yr[2] |
| Parallax (π) | 33.7721 ± 0.258 mas[2] |
| Distance | 96.6 ± 0.7 ly
(29.6 ± 0.2 pc) |
| Absolute magnitude (MV) | +3.56[5] |
|
|---|
| Orbit[4] |
|---|
| Primary | A |
| Period (P) | 1.471 years
(537 days) |
| Details |
|---|
| A |
|---|
| Mass | 1.34[4] M☉ |
| Radius | 2.12±0.18[5] R☉ |
| Luminosity | 4.37+0.76
−0.65[5] L☉ |
| Surface gravity (log g) | 3.87±0.02[5] cgs |
| Temperature | 5480±10[4] K |
| Metallicity [Fe/H] | 0.02±0.01[5] dex |
| Rotational velocity (v sin i) | 2.68±0.97[5] km/s |
| Age | 5.25+0.64
−0.57[5] Gyr |
| B[4] |
|---|
| Mass | 0.15 M☉ |
| Temperature | 3300+130
−140 K |
| Rotational velocity (v sin i) | <10.1 km/s |
| Position (relative to A)[4]
|
|
| Component | B |
| Angular distance | 56.9±0.3 mas |
| Other designations |
|---|
BD+24 2207, Gaia DR2 725469767850488064, Gaia DR3 725469767850488064, HD 89010, HIP 50319, HR 4030, SAO 81260, PPM 100216, WDS J10167+2325B, NLTT 23866, TYC 1969-1260-1, IRAS 10137+2345, 2MASS J10163231+2330111 |
| Database references |
|---|
| SIMBAD | data |
35 Leonis (HIP 53019, HD 89010) is a spectroscopic binary star system[4] located in the constellation of Leo, next to the star Zeta Leonis.[1] It is located 96.5 ly (29.6 pc) from Earth based upon parallax measurements.[2] The system consists of a G-type star (yellow dwarf) and a red dwarf star.[4] With an apparent magnitude of 5.97, it can be naked-eye visible only from dark skies.[1]
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