HD 94510

This article is about u Carinae. For U Carinae, see HD 95109.
Not to be confused with υ Carinae.
HD 94510
Observation data
Epoch J2000      Equinox J2000
Constellation Carina
Right ascension 10h 53m 29.65524s[1]
Declination −58° 51′ 11.4163″[1]
Apparent magnitude (V) +3.78[2] (3.75–3.80)[3]
Characteristics
Evolutionary stage subgiant[4]
Spectral type K0IV[5]
B−V color index +0.945±0.005[2]
Variable type suspected
Astrometry
Radial velocity (Rv)+8.10±0.70[2] km/s
Proper motion (μ) RA: +79.01±0.13[1] mas/yr
Dec.: +38.47±0.12[1] mas/yr
Parallax (π)34.33 ± 0.13 mas[1]
Distance95.0 ± 0.4 ly
(29.1 ± 0.1 pc)
Absolute magnitude (MV)1.46[2]
Details
Mass1.60[4] M☉
Radius7.55+0.93
−0.12[6] R☉
Luminosity30.96±0.27[6] L☉
Surface gravity (log g)3.00[7] cgs
Temperature4,955+41
−80[6] K
Metallicity [Fe/H]−0.13[2] dex
Other designations
u Car, NSV 5011, CPD−58°2834, GC 14980, HD 94510, HIP 53253, HR 4257, SAO 238574, CCDM J10535-5851[8]
Database references
SIMBADdata

HD 94510 is a single[9] star in the southern constellation of Carina, positioned near the northern constellation border with Vela. It has the Bayer designation u Carinae; HD 94520 is the identifier from the Henry Draper Catalogue. This object has an orange hue and is visible to the naked eye with an apparent visual magnitude that fluctuates around +3.78.[2] The star is located at a distance of 95 light-years from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +8 km/s.[2]

This is a K-type star in the subgiant[4] stage with a stellar classification of K0IV,[5] which indicates it has exhausted the supply of hydrogen at its core and is evolving into a giant. HD 94510 is a suspected variable star with a brightness that has been measured varying from magnitude 3.75 down to 3.80.[3] It has an estimated 1.60[4] times the mass of the Sun and has expanded to nearly eight[6] times the Sun's radius. The star is radiating 31 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,955 K.[6]

  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 d e f g Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference Edvardsson1988 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gray2006 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Alves2015 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).