BD−08°2823

Coordinates: Sky map 10h 00m 47.7213s, −09° 31′ 00.046″
Source: Wikipedia, the free encyclopedia.
BD−08°2823
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sextans
Right ascension 10h 00m 47.7206s[1]
Declination –09° 31′ 00.0428″[1]
Apparent magnitude (V) 9.86[2]
Characteristics
Spectral type K4:V[3]
Apparent magnitude (B) 10.931[2]
Apparent magnitude (J) 7.960±0.020[2]
Apparent magnitude (H) 7.498±0.047[2]
Apparent magnitude (K) 7.323±0.021[2]
B−V color index 1.071±0.010[2]
Distance
135.0 ± 0.2 ly
(41.38 ± 0.07 pc)
Absolute magnitude (MV)6.73[2]
Details
Gyr
Ross 444[8]
Database references
Exoplanet Archive
data

BD−08°2823 is a

angular rate of 0.369″ yr−1.[9]

This is an ordinary

rotation period of around 27 days.[7] This star is smaller, cooler, and less massive than the Sun. Its metal content is slightly lower than in the Sun.[4] The star is radiating 24% of the luminosity of the Sun from its photosphere at an effective temperature of 4,746 K.[7]

Planetary system

In 2009, two planets were found in orbit around the star. They were discovered using the

radial velocity method with the HARPS spectrograph in Chile, despite the data noise introduced through surface activity. The inner planet has a minimum mass equal to 14.4±2.1 times the mass of the Earth, while the outer planet is at least one third the mass of Jupiter.[7]

The BD−08°2823 planetary system[7]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b ≥0.045 ± 0.007 MJ 0.056 ± 0.002 5.60 ± 0.02 0.15 ± 0.15 — —
c ≥0.33 ± 0.03 MJ 0.68 ± 0.02 237.6 ± 1.5 0.19 ± 0.09 — —

See also

  • Lists of exoplanets

References

  1. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  2. ^
    S2CID 119257644
    .
  3. ^
    doi:10.1086/114146
    .
  4. ^
    S2CID 90259810
    . A78.
  5. S2CID 119219062
    .
  6. S2CID 118908425
    . A94.
  7. ^
    S2CID 73713738
    .
  8. ^ "BD-08 2823". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-11-14.
  9. Bibcode:1995yCat.1098....0L
    .


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