AZ Canis Minoris

AZ Canis Minoris

A blue band light curve for AZ Canis Minoris, adapted from Poretti et al. (1996)[1]
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Canis Minor
Right ascension 07h 44m 07.63294s[2]
Declination +02° 24′ 19.5226″[2]
Apparent magnitude (V) 6.46[3] (6.44 to 6.51)[4]
Characteristics
Spectral type A5 IV[5]
B−V color index 0.211±0.008[3]
Variable type δ Sct[6]
Astrometry
Radial velocity (Rv)+14.9±0.9[3] km/s
Proper motion (μ) RA: −18.963[2] mas/yr
Dec.: −8.672[2] mas/yr
Parallax (π)6.5237 ± 0.1107 mas[2]
Distance500 ± 8 ly
(153 ± 3 pc)
Absolute magnitude (MV)1.01[3]
Details
Mass1.91[7] M☉
Radius3.83+0.20
−0.17[2] R☉
Luminosity48.4±1.0[2] L☉
Surface gravity (log g)3.6[8] cgs
Temperature7,783+138
−201[2] K
Metallicity [Fe/H]0.12[9] dex
Rotational velocity (v sin i)44[10] km/s
Age990[7] Myr
Other designations
AZ CMi, BD+02°1761, GC 10410, HD 62437, HIP 37705, HR 2989, SAO 115864[11]
Database references
SIMBADdata

AZ Canis Minoris is a variable star in the equatorial constellation of Canis Minor. It is just visible to the naked eye in good viewing conditions as a dim, white-hued star with an apparent visual magnitude of around 6.46.[3] The star is located around 500 light years away from the Sun based on parallax, and is drifting further away with a radial velocity of +15 km/s.[3] No evidence has been found for a companion to this star,[12] although in the past it has been reported as a binary star system.[13]

This star has a stellar classification of A5 IV,[5] matching an A-type subgiant star. The variable nature of this star was discovered in 1970 at Kitt Peak Observatory.[14] It is a monoperiodic Delta Scuti variable[8] with a cycle period of 2.29 hours and an amplitude of 0.060 in visual magnitude;[6] ranging from a peak magnitude of 6.44 down to 6.51.[4] AZ Canis Minoris is nearly a billion[7] years old with a projected rotational velocity of 44 km/s.[10] It has 1.9[7] times the mass of the Sun and 3.8[2] times the Sun's radius. The star is radiating 48[2] times as much luminosity as the Sun from its photosphere at an effective temperature of 7,783 K.[2]

  1. ^ Cite error: The named reference Poretti was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference AAVOS was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Houk1999 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Rodríguez2000 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference luck2015 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Poretti1996 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Netopil2017 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Bush2008 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 Liakos2017 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Szatmary1990 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Percy1970 was invoked but never defined (see the help page).