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Observation data
Epoch 2000      Equinox 2000
Constellation Lupus
Right ascension 15h 30m 18.67s[1]
Declination −42° 58′ 41.5″[1]
Apparent magnitude (V) 17.4[1]
Spectral type K1V[1]
Apparent magnitude (B) 18.68 [0.43][1]
Apparent magnitude (V) ~17.40[1]
Apparent magnitude (J) 15.80 ±0.09[1]
Apparent magnitude (H) 15.39 ±0.13[1]
Apparent magnitude (K) 15.48 ±0.25[1]
Proper motion (μ) RA: -8 ± 3[1] mas/yr
Dec.: -24 ± 5[1] mas/yr
Distance 8950 ly
(2744 pc)
Mass 0.87 ±0.004 M
Radius 0.82 ±0.05 R
Temperature 5000 ±150 K
Other designations
GSC2 S233113121866, USNO-B1.0 0470-00456338, DENIS-P J153018.6-425841, 2MASS J15301866-4258415[1]
Database references
Extrasolar Planets

Lupus-TR-3 is a dim magnitude 17 K-type main sequence star approximately 8,950 light-years distant in the constellation of Lupus.[1]

Planetary system[edit]

Lupus-TR-3 b is an exoplanet discovered in 2007 by personnel from the Harvard-Smithsonian Center for Astrophysics using the transit method. It has four-fifths the mass of Jupiter, nine-tenths the radius, and has density of 1.4 g/cm³. This planet is a typical "hot Jupiter" as it orbits at 0.0464 AU distance from the star, taking 3.9 days to orbit. It is currently the faintest ground-based detection of a transiting planet.[2]

The Lupus-TR-3 planetary system
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b 0.81 ± 0.18 MJ 0.0464 ± 0.0007 3.91405 ± 4e-5 0

See also[edit]


  1. ^ a b c d e f g h i j k l m "SIMBAD query result: Lupus-TR 3 -- Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-05-20. 
  2. ^ Weldrake; Bayliss, Daniel D. R.; Sackett, Penny D.; Tingley, Brandon W.; Gillon, Michaël; Setiawan, Johny; et al. (2008). "Lupus-TR-3b: A Low-Mass Transiting Hot Jupiter in the Galactic Plane?". The Astrophysical Journal Letters. 675 (1): L37–L40. Bibcode:2008ApJ...675L..37W. arXiv:0711.1746Freely accessible. doi:10.1086/529519. 

External links[edit]

Coordinates: Sky map 15h 30m 18.67s, −42° 58′ 41.5″