TU Corvi

TU Corvi

A light curve for TU Corvi, plotted from TESS data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Corvus
Right ascension 12h 35m 58.79603s[2]
Declination −20° 31′ 38.9160″[2]
Apparent magnitude (V) 6.20[3]
Characteristics
Spectral type F0 V[4]
B−V color index 0.34±0.01[3]
Variable type δ Sct[5][6]
Astrometry
Radial velocity (Rv)−2.0±4.3[7] km/s
Proper motion (μ) RA: +30.202[2] mas/yr
Dec.: −51.280[2] mas/yr
Parallax (π)13.2558 ± 0.3343 mas[2]
Distance246 ± 6 ly
(75 ± 2 pc)
Absolute magnitude (MV)2.08[3]
Details
Mass1.45[8] M☉
Radius2.7[2] R☉
Luminosity12.6+1.2
−1.1[8] L☉
Surface gravity (log g)3.93±0.14[8] cgs
Temperature7,132±242[8] K
Metallicity [Fe/H]−0.07±0.07[9] dex
Rotational velocity (v sin i)103[10] km/s
Age786[8] Myr
Other designations
TU Crv, BD−19°3521, HD 109585, HIP 61496, HR 4797, SAO 180937[11]
Database references
SIMBADdata

TU Corvi is a yellow-white hued star in the southern constellation of Corvus. It is a dimly visible to the naked eye with an apparent visual magnitude of 6.20.[3] The distance to this star can be estimated from its annual parallax shift of 13.3 mas, yielding a range of about 246 light years. Based upon measured changes in its proper motion, it may be a close binary system.[12]

This is an F-type main-sequence star with a stellar classification of F0 V.[4] Previously it had been classed as F0 III,[13] matching an evolved giant star. It is a Delta Scuti variable, varying by an amplitude of 0.025 in B magnitude with a period of 118 minutes.[5][6] At the age of 786[8] million years, it has a high rate of spin with a projected rotational velocity of 103 km/s.[10] The star has 1.45 times the mass of the Sun and is radiating 12.6 times the Sun's luminosity from its photosphere at an effective temperature of 7,132 K.[8]

  1. ^ Cite error: The named reference MAST was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference gcvs was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference AAVSOTU was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  8. ^ a b c d e f g Cite error: The named reference david2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Gáspár2016 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference zorec2012 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference mason1999 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Cowley1969 was invoked but never defined (see the help page).