HD 1606

HD 1606
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 20m 24.40107s[1]
Declination +30° 56′ 08.2099″[1]
Apparent magnitude (V) 5.869[2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type B7V[4]
U−B color index −0.45[5]
B−V color index −0.10[5]
Variable type Suspected[6]
Astrometry
Radial velocity (Rv)3.8[7] km/s
Proper motion (μ) RA: 15.734±0.159[1] mas/yr
Dec.: −2.957±0.125[1] mas/yr
Parallax (π)5.5900 ± 0.1069 mas[1]
Distance580 ± 10 ly
(179 ± 3 pc)
Absolute magnitude (MV)−0.5[8]
Details
Mass3.75±0.08[3] M☉
Radius2.9[9] R☉
Luminosity245+36
−31[3] L☉
Surface gravity (log g)3.988±0.017[10] cgs
Temperature13,186±100[10] K
Rotational velocity (v sin i)113±8[10] km/s
Other designations
NSV 128, AG+30° 32, BD+30°42, GC 408, HD 1606, HIP 1630, HR 78, SAO 53820, PPM 65213[11]
Database references
SIMBADdata

HD 1606 is a single[12] star in the northern constellation of Andromeda, positioned a few degrees to the northeast of the bright star Alpheratz. It has a blue-white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.87.[2] Although it is suspected of variability, none has been conclusively found.[13] The star is located at a distance of approximately 580 light-years (179 parsecs) from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +4 km/s.[7] It has an absolute magnitude of −0.5.[8]

This is a B-type main-sequence star with a stellar classification of B7V,[4] which means it is currently generating energy through hydrogen fusion at its core. It has 3.75[3] times the mass of the Sun and a fairly high rate of spin, showing a projected rotational velocity of 113 km/s.[10] The star is radiating 245[3] times the luminosity of the Sun from its photosphere at an effective temperature of 13,186 K.[10]

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  7. ^ a b Cite error: The named reference gcsrv was invoked but never defined (see the help page).
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  10. ^ a b c d e Cite error: The named reference huang was invoked but never defined (see the help page).
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  12. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference AAVSOR was invoked but never defined (see the help page).