HD 100307

HD 100307
Observation data
Epoch J2000      Equinox J2000
Constellation Hydra
Right ascension 11h 32m 23.28291s[1]
Declination −26° 44′ 48.4974″[1]
Apparent magnitude (V) 6.16[2]
Characteristics
Spectral type M2 III[3]
U−B color index +1.99[4]
B−V color index +1.67[4]
Variable type Suspected
Astrometry
Radial velocity (Rv)34.50 ± 0.6[5] km/s
Proper motion (μ) RA: −83.52[1] mas/yr
Dec.: 19.85[1] mas/yr
Parallax (π)4.54 ± 0.36 mas[1]
Distance720 ± 60 ly
(220 ± 20 pc)
Details[6]
Radius67.564 R☉
Luminosity687.324 ± 72.169 L☉
Temperature3598 ± 125 K
Other designations
CD−26° 8620, HD 100307, HIP 56293, HR 4445, SAO 179969
Database references
SIMBADdata

HD 100307 is a suspected variable star in the constellation of Hydra. Its apparent magnitude is 6.16,[2] but interstellar dust makes it appear 0.346 magnitudes dimmer than it should be.[6] It is located some 340 light-years (104 parsecs) away, based on parallax.[1]

HD 100307 is a M-type red giant. It has evolved from the main sequence to a radius of 67.6 times that of the Sun. It emits 687 times as much energy as the Sun at a surface temperature of 3,598 K.[6]

  1. ^ a b c d e f Cite error: The named reference HIP was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Ducati was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Houk1982 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference EgUBV was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Gontcharov was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference McDonald was invoked but never defined (see the help page).