45 Andromedae

45 Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 01h 02m 54.25356s[1]
Declination +41° 20′ 42.7673″[1]
Apparent magnitude (V) 5.80[2]
Characteristics
Spectral type B7 III-IV[3]
B−V color index −0.095±0.004[2]
Astrometry
Radial velocity (Rv)−1.5±1.0[4] km/s
Proper motion (μ) RA: −17.558[1] mas/yr
Dec.: −18.400[1] mas/yr
Parallax (π)9.5725 ± 0.0805 mas[1]
Distance341 ± 3 ly
(104.5 ± 0.9 pc)
Absolute magnitude (MV)−1.10[2]
Details
Radius5.2[5] R☉
Luminosity413.92[2] L☉
Temperature12,874±167[6] K
Rotational velocity (v sin i)60[7] km/s
Other designations
45 And, BD+36° 201, HD 7019, HIP 5550, HR 348, SAO 54494, PPM 66038, WDS J01112+3743AB[8]
Database references
SIMBADdata

45 Andromedae, abbreviated 45 And, is a double star[9] in the northern constellation Andromeda. 45 Andromedae is the Flamsteed designation. Its combined apparent visual magnitude is 5.80.[2] Based upon an annual parallax shift of 9.57 mas,[1] it is located 341 light years away.

The stellar classification of 45 And is B7 III-IV,[3] matching an evolving subgiant/giant star. It has about 5.2[5] times the Sun's radius and is radiating 414[2] times the Sun's luminosity from its photosphere at an effective temperature of 12,874 K.[6]

This star is most likely single. A companion star was discovered by American astronomer George W. Hough in 1890. As of 2006, the companion was at an angular separation of 0.10″ along a position angle of 225° from the primary.[9]

  1. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Cowley1972 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference cadars2001 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Soubiran2016 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Strom2005 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).