30 Leonis Minoris

30 Leonis Minoris
Location of 30 Leonis Minoris (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Leo Minor
Right ascension 10h 25m 54.81535s[1]
Declination 33° 47′ 46.0309″[1]
Apparent magnitude (V) 4.72[2]
Characteristics
Spectral type kF0hF2mF2[3] or A9IIIa[4]
U−B color index +0.18[5]
B−V color index +0.25[5]
Astrometry
Radial velocity (Rv)+13.70[6] km/s
Proper motion (μ) RA: -73.66[1] mas/yr
Dec.: -59.21[1] mas/yr
Parallax (π)13.98 ± 0.21 mas[1]
Distance233 ± 4 ly
(72 ± 1 pc)
Absolute magnitude (MV)0.45[2]
Details
Mass2.28[7] M☉
Radius4.182[8] R☉
Luminosity58[7] L☉
Surface gravity (log g)3.82[9] cgs
Temperature7,292[9] K
Metallicity [Fe/H]+0.19[9] dex
Rotational velocity (v sin i)34[7] km/s
Other designations
30 LMi, BD+34°2128, GC 14315, HD 90277, HIP 51056, HR 4090, SAO 62038[10]
Database references
SIMBADdata
30 Leonis Minoris in optical light

30 Leonis Minoris is a single[11] star in the northern constellation of Leo Minor. It is visible to the naked eye as a faint, white-hued point of light with an apparent visual magnitude of 4.72.[2] The distance to this star, as estimated from parallax measurements, is 233 light years.[1] It is drifting away from the Earth with a heliocentric radial velocity of +13.7 km/s.[6]

This object has been catalogued as an Am star[12] and was given a stellar classification of kF0hF2mF2[3] by Abt and Morrell (1995). This notation indicates the calcium K line matches an F0 star, while the hydrogen and metal lines fit an F2 star. However, Gray et al. (2001) assigned it a class of A9IIIa,[4] matching an A-type giant star.

30 Leonis Minoris has 2.3[7] times the mass of the Sun and 4.2[8] times the Sun's radius. It has a moderate rate of spin, showing a projected rotational velocity of 34 km/s.[7] The star is radiating 58[7] times the Sun's luminosity from its photosphere at an effective temperature of 7,292 K.[9]

  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 XHIP was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference abt1995 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Gray2001 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Mallama2014 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  7. ^ a b c d e f Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Masana2006 was invoked but never defined (see the help page).
  9. ^ a b c d Cite error: The named reference Wu2011 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Shorlin2002 was invoked but never defined (see the help page).