Pi2 Orionis

Source: Wikipedia, the free encyclopedia.
For other stars with this Bayer designation, see Pi Orionis.
π2 Orionis
Location of π2 Orionis (circled)
Observation data
ICRS
)
Constellation Orion
Right ascension 04h 50m 36.72298s[1]
Declination +08° 54′ 00.6493″[1]
Apparent magnitude (V) 4.35[2]
Characteristics
Spectral type A1 Vn[3]
U−B color index +0.03[2]
B−V color index +0.01[2]
Distance
224 ± 6 ly
(69 ± 2 pc)
Absolute magnitude (MV)0.48[5]
Details
Rotational velocity (v sin i)
261.4±13.5[5] km/s
HIP 22509, HR 1544, SAO 112124[9]
Database references
SIMBADdata

Pi2 Orionis (π2 Ori, π2 Orionis) is the

mas,[1] it is located roughly 224 light-years away from the Sun
.

This is an

projected rotational velocity of 261.4 km/s.[5] This is giving the star an oblate shape with an equatorial bulge that is 13% larger than the polar radius.[12] It is shining with 70[7] times the solar luminosity from its outer atmosphere at an effective temperature of 9,457 K.[8]

References

  1. ^
    S2CID 18759600
    .
  2. ^
    Bibcode:1966CoLPL...4...99J
    .
  3. ^
    doi:10.1086/110819
    .
  4. Bibcode:1953GCRV..C......0W
    .
  5. ^
    S2CID 53666672
    .
  6. S2CID 425754
    .
  7. ^
    S2CID 118665352
    .
  8. ^
    S2CID 53480665
    .
  9. ^ "pi.02 Ori". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-11-16.
  10. Bibcode:1964cbs..book.....H
    .
  11. S2CID 14878976
    .
  12. S2CID 119273474
    .
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