59 Andromedae

59 Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
59 And A
Right ascension 02h 10m 52.82451s[1]
Declination +39° 02′ 22.3597″[1]
Apparent magnitude (V) 6.09[2]
59 And B
Right ascension 02h 10m 53.65687s[1]
Declination +39° 02′ 35.9164″[1]
Apparent magnitude (V) 6.82[2]
Characteristics
59 And A
Spectral type B9 V[3]
B−V color index −0.054±0.006[2]
59 And B
Spectral type A1 Vn[3]
B−V color index +0.081±0.005[2]
Astrometry
59 And A
Radial velocity (Rv)−1.00±3.4[4] km/s
Proper motion (μ) RA: −13.506[1] mas/yr
Dec.: −14.981[1] mas/yr
Parallax (π)7.1469 ± 0.1007 mas[1]
Distance456 ± 6 ly
(140 ± 2 pc)
59 And B
Radial velocity (Rv)6.0±4.6[4] km/s
Proper motion (μ) RA: −9.166[1] mas/yr
Dec.: −17.208[1] mas/yr
Parallax (π)7.4166 ± 0.0619 mas[1]
Distance440 ± 4 ly
(135 ± 1 pc)
Details
59 And A
Radius2.73[5] R☉
Luminosity83.97[6] L☉
Temperature10,870[6] K
Rotational velocity (v sin i)176[3] km/s
59 And B
Mass2.23±0.09[7] M☉
Radius2.59[5] R☉
Luminosity30.4+7.6
−6.1[7] L☉
Temperature9,498[6] K
Rotational velocity (v sin i)233[3] km/s
Other designations
59 And, BD+38° 425, ADS 1683, WDS J02109+3902[8]
59 And A: GC 2600, HD 13294, HIP 10176, HR 628, SAO 55330, PPM 67045[9]
59 And B: GC 2602, HD 13295, HIP 10180, HR 629, SAO 55331, PPM 67046[10]
Database references
SIMBADdata
SIMBADdata

59 Andromedae, abbreviated 59 And, is a sixth-magnitude binary star system in the northern constellation of Andromeda. 59 Andromedae is the Flamsteed designation. As of 2017, the pair had an angular separation of 16.60″ along a position angle (PA) of 36°. Compare this to a separation of 15.3″ along a PA of 35°, as measured in 1783.[11] The two stars have an estimated physical separation of 1,370 AU.[5]

The magnitude 6.09[2] primary component is a B-type main-sequence star with a stellar classification of B9 V.[3] It has 2.73[5] times the Sun's radius and is radiating 84 times the Sun's luminosity from its photosphere at an effective temperature of 10,870 K.[6] It is spinning with a projected rotational velocity of 176 km/s.[3]

The secondary is a magnitude 6.82[2] A-type main-sequence star with a class of A1 Vn,[3] where the 'n' suffix indicates "nebulous" lines due to rapid rotation. It is spinning with a high projected rotational velocity of 233 km/s.[3] The star has 2.23[7] times the Sun's mass and 2.59[5] times the Sun's radius. It is radiating 30[7] times the luminosity of the Sun and has an effective temperature of 9,498 K.[6]

  1. ^ a b c d e f g h i j 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 c d e f g h Cite error: The named reference Royer2007 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference Howe2009 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference McDonald2012 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference Zorec2012 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. ^ Cite error: The named reference SIMBAD_A was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD_B was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference WDSC2011 was invoked but never defined (see the help page).