GQ Lupi information

GQ Lupi
	; A visual band light curve for GQ Lupi. The main plot (from ASAS data), shows the long-term variability, and the inset plot (adapted from Broeg et al.) shows the short-term periodic brightness variation.
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Lupus
Right ascension	15h 49m 12.1056s
Declination	−35° 39′ 05.0540″
Apparent magnitude (V)	11.40
Characteristics
Spectral type	K7V
B−V color index	0.96
Variable type	T Tauri variable
Astrometry
Proper motion (μ)	RA: −14.257±0.097 mas/yr ; Dec.: −23.596±0.066 mas/yr
Parallax (π)	6.5868 ± 0.0473 mas
Distance	495 ± 4 ly ; (152 ± 1 pc)
Absolute magnitude (MV)	~5
Details
Mass	0.7 M☉
Age	<2 million years
Other designations
	CD−35°10525, GQ Lup
Database references
SIMBAD	data

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]

^ Cite error: The named reference ASASServer was invoked but never defined (see the help page).
^ Cite error: The named reference Broeg was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d "V* GQ Lup". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved June 13, 2008.
^ ^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
^ From parallax and apparent magnitude.
^ ^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.

[ASASServer-1] Cite error: The named reference ASASServer was invoked but never defined (see the help page).

[Broeg-2] Cite error: The named reference Broeg was invoked but never defined (see the help page).

[Gaia_DR2-3] ^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).

[simbad-4] "V* GQ Lup". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved June 13, 2008.

[n08-5] 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.

[ns-7] First image of exoplanet orbiting Sun-like star, Kelly Young, April 4, 2005, NewScientist.com news service. Accessed on line June 13, 2008.

Observation data Epoch J2000.0 Equinox J2000.0
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.
Constellation	Lupus
Right ascension	15^h 49^m 12.1056^s^[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]
Distance	495 ± 4 ly (152 ± 1 pc)
Absolute magnitude (M_V)	~5^[6]

Details

Mass	0.7^[7] `M`_☉
Age	<2 million^[7] years

Other designations
CD−35°10525, GQ Lup^[4]
Database references
SIMBAD	data

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