AE Pictoris
Star in the constellation Pictor / From Wikipedia, the free encyclopedia
AE Pictoris is an eclipsing binary[6] star system in the southern constellation of Pictor. This dim, blue-white hued point of light is just barely visible to the naked eye; it has an apparent visual magnitude of 6.09, which drops to magnitude 6.14 during an eclipse.[12] The system is located around 1,430 light years away from the Sun based on parallax,[2] and it is receding with a radial velocity of 34 km/s.[13]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Pictor |
Right ascension | 06h 31m 10.63900s[2] |
Declination | −61° 52′ 46.3515″[2] |
Apparent magnitude (V) | 6.14[3] |
Characteristics | |
Spectral type | B3V[4] |
B−V color index | −0.147±0.006[5] |
Variable type | Eclipsing binary[6] |
Astrometry | |
Radial velocity (Rv) | 34.0±7.4[5] km/s |
Proper motion (μ) | RA: −9.142[2] mas/yr Dec.: +12.087[2] mas/yr |
Parallax (π) | 2.2770 ± 0.0678 mas[2] |
Distance | 1,430 ± 40 ly (440 ± 10 pc) |
Absolute magnitude (MV) | 1.73[5] |
Orbit[7] | |
Period (P) | 2.9723 d |
Eccentricity (e) | 0.10 |
Periastron epoch (T) | 2,431,998.871 JD |
Argument of periastron (ω) (secondary) | 39.0° |
Semi-amplitude (K1) (primary) | 119.0 km/s |
Details | |
Mass | 7.1±0.1[8] M☉ |
Luminosity (bolometric) | 2,569[9] L☉ |
Temperature | 18,700[9] K |
Rotation | 1.490911 d[10] |
Age | 27.7±1.4[8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
This is a single-lined spectroscopic binary system with an orbital period of 2.97 days and an eccentricity of 0.10. The minimum value of the semimajor axis for the pair is 4.8 Gm (6.9 R☉).[7] It is classed as a probable eclipsing binary variable (EB:), but with some uncertainty regarding the specific type.[6] This is a candidate runaway star system, having a peculiar velocity of 24.9+4.9
−5.1 km/s relative to its neighbors.[8] The visible component is a B-type main-sequence star with a stellar classification of B3V.[4] it is 28 million years old with seven[8] times the mass of the Sun. The star is radiating 2,569 times the luminosity of the Sun from its photosphere at an effective temperature of 18,700 K.[9]