AE Pictoris
| 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 | |
| AE Pic A | |
| Mass | 7.1±0.1[8] M☉ |
| Luminosity (bolometric) | 2,569[9] L☉ |
| Temperature | 17,873[10] K |
| Metallicity [Fe/H] | 3.93[10] dex |
| Rotation | 1.490911 d[11] |
| Rotational velocity (v sin i) | 70[10] km/s |
| Age | 27.7±1.4[8] Myr |
| AE Pic B | |
| Temperature | 11,699[10] K |
| Metallicity [Fe/H] | 4.02[10] dex |
| Rotational velocity (v sin i) | 42[10] km/s |
| Other designations | |
| AE Pic, CD−61°1394, HD 46792, HIP 31068, HR 2410, SAO 249572[12] | |
| Database references | |
| SIMBAD | data |
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.[13] 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.[14]
This is a 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] The secondary star was only recently (in 2023) detected, making it a double-lined spectroscopic binary.[10] 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]
References
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- ^ a b c d e f Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR2 record for this source at VizieR.
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- ^ a b c d e f g Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
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