Psi2 Aquarii

Source: Wikipedia, the free encyclopedia.
For other stars with this Bayer designation, see ψ Aquarii.
ψ2 Aquarii
Location of ψ2 Aquarii (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 23h 17m 54.21372s[1]
Declination −09° 10′ 57.0675″[1]
Apparent magnitude (V) 4.403[2]
Characteristics
Spectral type B5 Vn[3]
U−B color index −0.561[2]
B−V color index −0.146[2]
Variable type λ Eri[4]
Distance
400 ± 20 ly
(123 ± 6 pc)
Absolute magnitude (MV)−1.04[6]
Details
Rotational velocity (v sin i)
341[8] km/s
HIP 115033, HR 8858, SAO 146620.[9]
Database references
SIMBADdata

Psi2 Aquarii,

apparent visual magnitude of 4.4.[2] Based upon parallax measurements made during the Hipparcos mission, the distance to this star is roughly 400 light-years (120 parsecs).[1]

A light curve for Psi2 Aquarii, plotted from TESS data[10]

This is a

projected rotational velocity of the star is 341 km/s.[8] Psi2 Aquarii is 4.6[7] times as large as the Sun with an effective temperature of 15,212 K[7] in its outer envelope
.

It is a

periodic Be star, with a pulsation cycle lasting 1.073 days.[4] The amplitude of the variation is 0.024 in magnitude.[11]

References

  1. ^
    S2CID 18759600
    .
  2. ^
    Bibcode:1985A&AS...61..387K
    .
  3. ^
    doi:10.1086/190179
    .
  4. ^
    doi:10.1093/mnras/277.4.1547
    .
  5. Bibcode:1953GCRV..C......0W
    .
  6. ^
    S2CID 119257644
    .
  7. ^
    doi:10.1093/mnras/189.3.601
    .
  8. ^
    Bibcode:1970CoAsi.239....1B
    .
  9. ^ "* 93 Aqr", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 2012-07-06.
  10. ^ MAST: Barbara A. Mikulski Archive for Space Telescopes, Space Telescope Science Institute, retrieved 10 November 2022.
  11. doi:10.1093/mnras/245.1.92
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=Psi2_Aquarii&oldid=1170067996"