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15 Orionis facts for kids

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15 Orionis
Orion constellation map.svg
Red circle.svg
Location of 15 Orionis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Orion
Right ascension 05h 09m 41.95770s
Declination 15° 35′ 50.0410″
Apparent magnitude (V) 4.82
Spectral type F2IV
U−B color index +0.19
B−V color index +0.32
Radial velocity (Rv) +28.79 km/s
Proper motion (μ) RA: -2.71 mas/yr
Dec.: -15.75 mas/yr
Parallax (π) 6.06 ± 1.97 mas
Distance approx. 500 ly
(approx. 170 pc)
Absolute magnitude (MV) -0.04
Mass 3.42 M
Radius 5.9 R
Luminosity 300 L
Surface gravity (log g) 3.75 cgs
Temperature 7,161 K
Metallicity [Fe/H] +0.21 dex
Rotational velocity (v sin i) 60 km/s
Other designations
BD+15°752, CCDM J05097+1536AB, GC 6306, HIP 24010, HR 1676, HD 33276, SAO 94359, WDS J05097+1536AB
Database references

15 Orionis is a class F2IV (early F-type subgiant) star in the constellation Orion. Its apparent magnitude is 4.82 and it is approximately 540 light years away based on parallax. It is the southern pole star of Uranus.

It has one suspected companion, B, at a separation of 0.3".

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