Nu Doradus

Nu Doradus
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Dorado
Right ascension 06h 08m 44.26199s[1]
Declination −68° 50′ 36.2797″[1]
Apparent magnitude (V) 5.06[2]
Characteristics
Spectral type B8 V[3]
U−B color index −0.19[2]
B−V color index −0.08[2]
Astrometry
Radial velocity (Rv)+17.5[4] km/s
Proper motion (μ) RA: −50.84[1] mas/yr
Dec.: +19.01[1] mas/yr
Parallax (π)10.88 ± 0.13 mas[1]
Distance300 ± 4 ly
(92 ± 1 pc)
Absolute magnitude (MV)+0.24[5]
Details
Mass2.73[6] M☉
Radius3.2[7] R☉
Luminosity107[5] L☉
Surface gravity (log g)4.01±0.14[6] cgs
Temperature11,381±387[6] K
Rotation1.40032[8] d
Rotational velocity (v sin i)98[6] km/s
Age118[6] Myr
Other designations
ν Dor, CPD−68° 474, FK5 1166, HD 43107, HIP 29134, HR 2221, SAO 249461[9]
Database references
SIMBADdata

Nu Doradus, Latinized from ν Doradus, is a single,[10] blue-white hued star in the southern constellation of Dorado. It is visible to the naked eye with an apparent visual magnitude of +5.06.[2] Based upon an annual parallax shift of 10.88 mas as seen from Earth,[1] it is located about 300 light years from the Sun.[11] At that distance, the visual magnitude is diminished by an extinction of 0.07 due to interstellar dust. It is moving further from the Sun with a heliocentric radial velocity of +17.5 km/s.[4]

This is an ordinary B-type main-sequence star, as indicated by its stellar classification of B8 V.[3] It is an estimated 118[6] million years old and is spinning with a projected rotational velocity of 98 km/s.[6] The star has 2.7[6] times the mass of the Sun and about 3.2[7] times the Sun's radius. It is radiating 107[5] times the Sun's luminosity from its photoshere at an effective temperature of 11,381 K.[6] No infrared excess has been detected.[12]

  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 Cite error: The named reference Cousins1973 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1975 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Wilson1953 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d e f g h i Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Fracassini2001 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Barraza 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).
  11. ^ Cite error: The named reference Gontcharov2012 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Su2006 was invoked but never defined (see the help page).