HR 3803

This article is about N Velorum. For n Velorum, see HD 74272.
HR 3803
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
Right ascension 09h 31m 13.31815s[1]
Declination –57° 02′ 03.7552″[1]
Apparent magnitude (V) 3.16[2]
Characteristics
Spectral type K5 III[3]
U−B color index +1.88[4]
B−V color index +1.55[4]
Astrometry
Radial velocity (Rv)–13.9[2] km/s
Proper motion (μ) RA: –32.615 mas/yr[1]
Dec.: +5.857 mas/yr[1]
Parallax (π)14.6234 ± 0.1858 mas[1]
Distance223 ± 3 ly
(68.4 ± 0.9 pc)[1]
Details
Mass2.1±0.3[5] M☉
Radius66±5[5] R☉
Luminosity776[5] L☉
Surface gravity (log g)1.19±0.02[5] cgs
Temperature3,964±125[5] K
Other designations
N Velorum, N Vel, CP–56 2270, HD 82668, FK5 361, HIP 46701, HR 3803, SAO 237067.
Database references
SIMBADdata

HR 3803 or N Velorum (N Vel) is a 3rd-magnitude star on the border between the southern constellations Carina and Vela. Based upon parallax measurements, it is approximately 223 light-years (68 parsecs) from Earth.

It has a spectral classificafion of K5III,[3] indicating that it has evolved from the main sequence and is now a giant star. At this evolutionary stage, N Velorum has expanded to 66 times the size of the Sun and is emitting 776 times its luminosity.[5] Its effective temperature is of 3,964 K,[5] 30% cooler than the Sun, which gives it the typical orange hue of K-type stars.[6]

In 1752, French astronomer Nicolas Louis de Lacaille divided the former constellation Argo Navis into three separate constellations, and then referenced its stars by extending Bayer's system of star nomenclature;[7] this star was given the designation N Velorum. In 1871 Benjamin Apthorp Gould discovered this star to be variable, but this occurred prior to the standardization of variable star nomenclature by German astronomer Friedrich Wilhelm Argelander during the nineteenth century, so it does not fall into the standard range of variable star designations.[8]

  1. ^ a b c d e Cite error: The named reference dr3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference scfs was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference araa11_29 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference clpl4_99 was invoked but never defined (see the help page).
  5. ^ a b c d e f g Cite error: The named reference kallinger was invoked but never defined (see the help page).
  6. ^ "The Colour of Stars". Australia National Telescope Facility. 6 March 2024. Retrieved 2024-05-27.
  7. ^ "Greek Letter Designations Southern Stars". Archived from the original on 2010-01-21. Retrieved 2012-04-13.
  8. ^ Cite error: The named reference jaavso16_2_65 was invoked but never defined (see the help page).