HD 9578

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HD 9578
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sculptor
Right ascension 01h 33m 17.14s[1]
Declination −38° 14′ 42.1″[1]
Apparent magnitude (V) 8.201
Characteristics
Spectral type G1V
Apparent magnitude (B) 8.788
Apparent magnitude (J) 7.156
Apparent magnitude (H) 6.89
Apparent magnitude (K) 6.798
B−V color index 0.587
Variable type none
Astrometry
Radial velocity (Rv) –3.9 km/s
Proper motion (μ) RA: –30.95 ± 0.69[1] mas/yr
Dec.: –38.41 ± 0.54[1] mas/yr
Parallax (π) 17.44 ± 0.85[1] mas
Distance 187 ± 9 ly
(57 ± 3 pc)
Absolute magnitude (MV) 4.412
Details
Mass 1.12 M
Radius 1.12 ± 0.1 R
Luminosity 1.395 ± 0.163 L
Surface gravity (log g) 4.40 cgs
Temperature 5930 ± 100 K
Metallicity 0.11
Other designations
HIP 7240, TYC 7541-00066-1, CD-38 528, CPD-38 128, SAO 193177, PPM 277127, 2MASS J01331715-3814421
Database references
SIMBAD data
Exoplanet Archive data
Extrasolar Planets
Encyclopaedia
data

HD 9578 is a star located approximately 187 light-years away in the constellation of Sculptor. It is a Sun-like star that in 2009 has been found to host an extrasolar planet.

Planetary system[edit]

HD 9578 b is an extrasolar planet with at least 0.62 times the mass of Jupiter. It takes 494 days to orbit the star, with an orbital semimajor axis of 1.27 AU. The discovery was announced in a press release in October 2009, but no discovery paper has yet been made available.

The HD 9578 planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥0.62 MJ 1.27 494  ?

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry

Coordinates: Sky map 01h 33m 17.1440s, −38° 14′ 42.058″