UY Volantis

UY Volantis
Observation data; Epoch J2000 Equinox J2000
Constellation	Volans
Right ascension	07h 48m 33.71s[1]
Declination	−67° 45′ 07.70″[1]
Apparent magnitude (V)	16.9[2]
Characteristics
Apparent magnitude (U)	16.10[2]
Apparent magnitude (B)	17[2]
Apparent magnitude (R)	16.7[1]
Astrometry
Radial velocity (Rv)	20[3] km/s
Parallax (π)	0.125 ± 0.008 mas[4][note 1]
Distance	26,000 ± 2,000 ly ; (8,000 ± 500 pc)
Other designations
	EXO 0748-676
Database references
SIMBAD	data

UY Volantis, also known as EXO 0748-676, is a low mass X-ray binary[5] system located in the constellation Volans. With an apparent magnitude of 16.9, it requires a powerful telescope to see. With a radial velocity of 20 km/s, it's drifting away from the Solar System, and is currently located 26,000 light years away.

Properties

Not much is know about the components, but they take 3.82 hours to orbit each other.[6]

Notes

calculated from distance

References

Monet, David G.; Levine, Stephen E.; Canzian, Blaise; Ables, Harold D.; Bird, Alan R.; Dahn, Conard C.; Guetter, Harry H.; Harris, Hugh C.; Henden, Arne A.; Leggett, Sandy K.; Levison, Harold F. (2003-02-01). "The USNO-B Catalog". The Astronomical Journal. 125: 984–993. arXiv:astro-ph/0210694. doi:10.1086/345888. ISSN 0004-6256.
Liu, Q. Z.; van Paradijs, J.; van den Heuvel, E. P. J. (July 2007). "A catalogue of low-mass X-ray binaries in the Galaxy, LMC, and SMC (Fourth edition)". Astronomy and Astrophysics. 469 (2): 807–810. arXiv:0707.0544. doi:10.1051/0004-6361:20077303. ISSN 0004-6361.
Duflot, M.; Figon, P.; Meyssonnier, N. (1995-12-01). "Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue". Astronomy and Astrophysics Supplement Series. 114: 269. ISSN 0365-0138.
Jonker, P. G.; Nelemans, G. (2004-10-01). "The distances to Galactic low-mass X-ray binaries: consequences for black hole luminosities and kicks". Monthly Notices of the Royal Astronomical Society. 354: 355–366. arXiv:astro-ph/0407168. doi:10.1111/j.1365-2966.2004.08193.x. ISSN 0035-8711.
Baumgartner, W. H.; Tueller, J.; Markwardt, C. B.; Skinner, G. K.; Barthelmy, S.; Mushotzky, R. F.; Evans, P. A.; Gehrels, N. (2013-08-01). "The 70 Month Swift-BAT All-sky Hard X-Ray Survey". The Astrophysical Journal Supplement Series. 207: 19. doi:10.1088/0067-0049/207/2/19. hdl:2381/18987. ISSN 0067-0049.
Ritter, H.; Kolb, U. (2003-06-01). "Catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects (Seventh edition)". Astronomy and Astrophysics. 404: 301–303. doi:10.1051/0004-6361:20030330. ISSN 0004-6361.

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[note_1-5] ulated from distance

[lsa03-1] Monet, David G.; Levine, Stephen E.; Canzian, Blaise; Ables, Harold D.; Bird, Alan R.; Dahn, Conard C.; Guetter, Harry H.; Harris, Hugh C.; Henden, Arne A.; Leggett, Sandy K.; Levison, Harold F. (2003-02-01). "The USNO-B Catalog". The Astronomical Journal. 125: 984–993. arXiv:astro-ph/0210694. doi:10.1086/345888. ISSN 0004-6256.

[onsa291-2] Liu, Q. Z.; van Paradijs, J.; van den Heuvel, E. P. J. (July 2007). "A catalogue of low-mass X-ray binaries in the Galaxy, LMC, and SMC (Fourth edition)". Astronomy and Astrophysics. 469 (2): 807–810. arXiv:0707.0544. doi:10.1051/0004-6361:20077303. ISSN 0004-6361.

[ikas7-3] Duflot, M.; Figon, P.; Meyssonnier, N. (1995-12-01). "Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue". Astronomy and Astrophysics Supplement Series. 114: 269. ISSN 0365-0138.

[fjif0-4] Jonker, P. G.; Nelemans, G. (2004-10-01). "The distances to Galactic low-mass X-ray binaries: consequences for black hole luminosities and kicks". Monthly Notices of the Royal Astronomical Society. 354: 355–366. arXiv:astro-ph/0407168. doi:10.1111/j.1365-2966.2004.08193.x. ISSN 0035-8711.

[iosa14-6] Baumgartner, W. H.; Tueller, J.; Markwardt, C. B.; Skinner, G. K.; Barthelmy, S.; Mushotzky, R. F.; Evans, P. A.; Gehrels, N. (2013-08-01). "The 70 Month Swift-BAT All-sky Hard X-Ray Survey". The Astrophysical Journal Supplement Series. 207: 19. doi:10.1088/0067-0049/207/2/19. hdl:2381/18987. ISSN 0067-0049.

[7] Ritter, H.; Kolb, U. (2003-06-01). "Catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects (Seventh edition)". Astronomy and Astrophysics. 404: 301–303. doi:10.1051/0004-6361:20030330. ISSN 0004-6361.