GQ Lupi

GQ Lupi

A visual band light curve for GQ Lupi. The main plot (from ASAS data[1]), shows the long-term variability, and the inset plot (adapted from Broeg et al.[2]) shows the short-term periodic brightness variation.
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Lupus
Right ascension 15h 49m 12.1056s[3]
Declination −35° 39′ 05.0540″[3]
Apparent magnitude (V) 11.40[4]
Characteristics
Spectral type K7V[4]
B−V color index 0.96[4]
Variable type T Tauri variable[5]
Astrometry
Proper motion (μ) RA: −14.257±0.097[3] mas/yr
Dec.: −23.596±0.066[3] mas/yr
Parallax (π)6.5868 ± 0.0473 mas[3]
Distance495 ± 4 ly
(152 ± 1 pc)
Absolute magnitude (MV)~5[6]
Details
Mass0.7[7] M☉
Age<2 million[7] years
Other designations
CD−35°10525, GQ Lup[4]
Database references
SIMBADdata

GQ Lupi is a T Tauri variable star approximately 495 light-years away[3] in the constellation of Lupus.[5] The star is young and has about 70% of the Sun's mass.[7]

  1. ^ Cite error: The named reference ASASServer was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Broeg was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  4. ^ a b c d "V* GQ Lup". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved June 13, 2008.
  5. ^ a b Astrometric and photometric monitoring of GQ Lupi and its sub-stellar companion, Ralph Neuhaeuser, Markus Mugrauer, Andreas Seifahrt, Tobias Schmidt, and Nikolaus Vogt, Astronomy and Astrophysics 484, #1 (2008), pp. 281–291. doi:10.1051/0004-6361:20078493. Bibcode:2008A&A...484..281N
  6. ^ From parallax and apparent magnitude.
  7. ^ a b c First image of exoplanet orbiting Sun-like star, Kelly Young, April 4, 2005, NewScientist.com news service. Accessed on line June 13, 2008.