PU Aurigae

PU Aurigae

A light curve for PU Aurigae, plotted from Hipparcos data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 05h 18m 15.69826s[2]
Declination +42° 47′ 31.6133″[2]
Apparent magnitude (V) 5.55[3]
Characteristics
Spectral type M4 III[3]
B−V color index 1.492±0.012[3]
Variable type Lb[4]
Astrometry
Radial velocity (Rv)−38.41±1.02[3] km/s
Proper motion (μ) RA: +17.98[5] mas/yr
Dec.: −30.61[5] mas/yr
Parallax (π)5.7462 ± 0.2309 mas[2]
Distance570 ± 20 ly
(174 ± 7 pc)
Absolute magnitude (MV)−0.63[3]
Details
Luminosity1,523[6] L☉
Temperature3,482[6] K
Other designations
PU Aurigae, BD+42° 1239, HD 34269, HIP 24738, HR 1722, SAO 40214[7]
Database references
SIMBADdata

PU Aurigae is an irregular variable star located in the constellation Auriga. A red giant, it varies by 0.1 magnitude around magnitude 5.64,[8] so it is faintly visible to the naked eye. Located around 560 light-years distant, it shines with a luminosity approximately 1,523 times that of the Sun and has a surface temperature of 3,482 K.[6]

Although the star was first found to be variable by Joel Stebbins and Charles Morse Huffer in 1928,[9] it was not given its variable star designation until 1977.[10]

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  2. ^ a b c Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
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  5. ^ a b Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Mcdonald was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference AAVSOPU was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Stebbins was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Kukarkin was invoked but never defined (see the help page).