Lambda Capricorni, Latinized from λ Capricorni, is a solitary[10] star in the southern constellation of Capricornus. It is faintly visible to the naked eye with an apparent visual magnitude of +5.56.[2] Based upon an annual parallax shift of 11.58 mas as seen from the Earth,[1] the star is located about 282 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.11 due to interstellar dust.[11]
  | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Capricornus |
| Right ascension | 21h 46m 32.09739s[1] |
| Declination | −11° 21′ 57.4391″[1] |
| Apparent magnitude (V) | +5.56[2] |
| Characteristics | |
| Spectral type | A1 V[3] |
| B−V color index | −0.01[2] |
| Astrometry | |
| Radial velocity (Rv) | −2.4[4] km/s |
| Proper motion (μ) | RA: +28.92[1] mas/yr Dec.: −9.66[1] mas/yr |
| Parallax (π) | 11.58 ± 0.30 mas[1] |
| Distance | 282 ± 7 ly (86 ± 2 pc) |
| Absolute magnitude (MV) | +0.89[5] |
| Details | |
| Mass | 2.50[6] M☉ |
| Radius | 2.2[7] R☉ |
| Luminosity | 45[5] L☉ |
| Surface gravity (log g) | 4.15±0.14[6] cgs |
| Temperature | 10,674±363[6] K |
| Rotational velocity (v sin i) | 192.5±5.7[8] km/s |
| Age | 155[6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is a white-hued A-type main sequence star with a stellar classification of A1 V.[3] It is a magnetic Ap star, indicating the spectrum displays chemically peculiar features.[8] The star has an estimated 2.50[6] times the mass of the Sun and about 2.2[7] times the Sun's radius. It is 155[6] million years old and is spinning rapidly with a projected rotational velocity of 192.5 km/s.[8] Lambda Capricorni is radiating 45[5] times the Sun's luminosity from its photosphere at an effective temperature of 10,674 K.[6]