  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 04m 34.14916s [1] |
| Declination | +15° 24′ 14.7771″ [1] |
| Apparent magnitude (V) | 4.65 –4.69 [2] |
| Characteristics | |
| Spectral type | B9 IV [3] or A1 Vp SiCr [4] |
| U−B color index | −0.10 [5] |
| B−V color index | −0.06 [5] |
| Variable type | α² CVn [2] |
| Astrometry | |
| Radial velocity (Rv) | +16.80 [6] km/s |
| Proper motion (μ) | RA: +17.80 [1] mas/yr Dec.: −31.15 [1] mas/yr |
| Parallax (π) | 8.93±0.24 mas [1] |
| Distance | 365 ± 10 ly (112 ± 3 pc) |
| Absolute magnitude (MV) | −0.59 [7] |
| Details | |
| Mass | 2.7 [8] M☉ |
| Radius | 4.3 [8] R☉ |
| Luminosity | 220 [7] L☉ |
| Surface gravity (log g) | 3.6 [8] cgs |
| Temperature | 9,520 [3] K |
| Rotational velocity (v sin i) | 63.3±3.6 [8] km/s |
| Other designations | |
| 11 Ori, V1032 Ori, BD+15°732, FK5 1140, GC 6191, HD 32549, HIP 23607, HR 1638, SAO 94290 [9] | |
| Database references | |
| SIMBAD | data |
11 Orionis is a solitary [10] Ap star in the equatorial constellation of Orion, near the border with Taurus. It is visible to the naked eye with an apparent visual magnitude of 4.65, [7] and it is located approximately 365 light years away from the Sun based on parallax. [1] The star is moving further from the Sun with a heliocentric radial velocity of +16.8 km/s. [6]
This object is a chemically peculiar star, known as an Ap star, with enhanced silicon and chromium lines in its spectrum. [12] It is an α² CVn variable, ranging from 4.65 to 4.69 magnitude with a period of 4.64 days. [2] The magnetic field measured from metal lines has a strength of +160±390 G . [13]
