V1094 Scorpii

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V1094 Scorpii
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Scorpius-Lupus
Right ascension 16h 08m 36.183s
Declination −39° 23′ 2.51″
Apparent magnitude (V) 13.48
Characteristics
Spectral type K6V
Variable type T Tauri-type?
Astrometry
Distance ≈456.4 ly
(≈140 [1] pc)
Details
Mass 0.78 [2] M
Radius 1.38 [2] R
Luminosity ≈0.56 L
Temperature 4256 K
Age 2-3 million years
Other designations
V1094 Sco, GSC 07855-01162, 2MASS J16083617-3923024, RX J1608.6-3922, 1RXS J160838.4-392237, UCAC2 15087202

V1094 Scorpii is a young stellar object in the constellation of Scorpius, located in the young Lupus Star Forming Region.[1]

A planetary system?[edit]

Periodic radial velocity variations in the young star V1094 Scorpii had at first been explained by the presence of a substellar object in tight orbit.[3] Currently the presence of a substellar object has been retracted, invoking starspots as the actual cause for observed radial velocity variations.[2]

The V1094 Scorpii planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
V1094 Scorpii b (retracted) ≤24 MJ ≈0.065 7.2  ?0

References[edit]

  1. ^ a b Hughes et al.; Hartigan, Patrick; Clampitt, Lori (1993). "The distance to the Lupus star formation region". The Astronomical Journal 105 (2): 571–575. Bibcode:1993AJ....105..571H. doi:10.1086/116454. 
  2. ^ a b c Joergens et al.; Guenther, E.; Neuhäuser, R.; Fernández, M.; Vijapurkar, J. (2001). "The T Tauri star RX J1608.6-3922 - not an eclipsing binary but a spotted single star". Astronomy and Astrophysics 373 (3): 966–973. arXiv:astro-ph/0105326. Bibcode:2001A&A...373..966J. doi:10.1051/0004-6361:20010684. 
  3. ^ Wichmann et al. (1997). "T Tauri stars and the Gould Belt near Lupus". Astronomy and Astrophysics 326: 211–217. Bibcode:1997A&A...326..211W.