Eta Pyxidis

Eta Pyxidis
Location of η Pyxidis (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pyxis
Right ascension 08h 37m 52.15248s[1]
Declination −26° 15′ 18.0063″[1]
Apparent magnitude (V) +5.27[2]
Characteristics
Spectral type A0 V[3]
B−V color index −0.04[2]
Astrometry
Radial velocity (Rv)31.0±4.2[4] km/s
Proper motion (μ) RA: −24.49[1] mas/yr
Dec.: −13.02[1] mas/yr
Parallax (π)14.07 ± 0.21 mas[1]
Distance232 ± 3 ly
(71 ± 1 pc)
Absolute magnitude (MV)+0.90[5]
Details
Mass2.51±0.01[6] M☉
Luminosity42[7] L☉
Surface gravity (log g)4.33[8] cgs
Temperature11,614±395[8] K
Rotational velocity (v sin i)238[6] km/s
Age67[8] Myr
Other designations
η Pyx, CPD−25° 3792, FK5 2676, HD 73495, HIP 42334, HR 3420, SAO 176189, WDS J08379-2615A[9]
Database references
SIMBADdata

Eta Pyxidis (η Pyxidis) is a solitary,[10] white-hued star in the southern constellation of Pyxis. It is faintly visible to the naked eye with an apparent visual magnitude of +5.27.[2] Based upon an annual parallax shift of 14.07 mas as seen from Earth,[1] this star is located around 232 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.07 due to interstellar dust.[5]

This is an A-type main-sequence star with a stellar classification of A0 V.[3] It is young with an age of around 67[8] million years and is spinning rapidly with a projected rotational velocity of 238 km/s.[6] The star has 2.51[6] times the mass of the Sun and is radiating 42[7] times the Sun's luminosity from its photosphere at an effective temperature of around 11,614 K.[8]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gontcharov2012 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  8. ^ a b c d e Cite error: The named reference David2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).