FO Aquarii

FO Aquarii
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquarius
Right ascension	22h 17m 55.38s
Declination	−08° 21′ 04.6″
Apparent magnitude (V)	12.7
Characteristics
Apparent magnitude (B)	13.70
Apparent magnitude (R)	13.60
Apparent magnitude (J)	12.87
Apparent magnitude (H)	12.75
Apparent magnitude (K)	12.51
Variable type	DQ
Orbit
Period (P)	4.85 hr
Other designations
	2E 4588, 1RXS J221753.9-082115, CS 22886-0021, H 2215-086
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue,; CCDM (2002),; Bright Star Catalogue (5th rev. ed.)

FO Aquarii is an intermediate polar^[3] in the constellation Aquarius. The white dwarf and companion star orbit each other with a period of approximately 4.85 hours.^[4] The system has got as bright as apparent magnitude 12.7 and has been as dim as magnitude 14.2.^[5]

References

^ ^a ^b ^c ^d ^e ^f ^g Cutri, R. M.; Skrutskie, M. F.; van Dyk, S.; Beichman, C. A.; Carpenter, J. M.; Chester, T.; Cambresy, L.; Evans, T.; Fowler, J.; Gizis, J.; Howard, E.; Huchra, J.; Jarrett, T.; Kopan, E. L.; Kirkpatrick, J. D.; Light, R. M.; Marsh, K. A.; McCallon, H.; Schneider, S.; Stiening, R.; Sykes, M.; Weinberg, M.; Wheaton, W. A.; Wheelock, S.; Zacarias, N. (2003). "2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". University of Massachusetts and Infrared Processing and Analysis Center. IPAC/California Institute of Technology. Bibcode:2003yCat.2246....0C.
^ Samus’, N. N.; Goranskii, V. P.; Durlevich, O. V.; Zharova, A. V.; Kazarovets, E. V.; Kireeva, N. N.; Pastukhova, E. N.; Williams, D. B.; Hazen, M. L. (2003). "An electronic version of the second volume of the General Catalogue of Variable Stars with improved coordinates". Astronomy Letters. 29 (7): 468–479. Bibcode:2003AstL...29..468S. doi:10.1134/1.1589864.
^ ^a ^b Pekön, Y.; Balman, Ş. (2012). "Orbital-phase-resolved Spectroscopy of the Intermediate Polar FO Aqr Using XMM-Newton Observatory Data". The Astronomical Journal. 144 (2): 53. Bibcode:2012AJ....144...53P. doi:10.1088/0004-6256/144/2/53.
^ ^a ^b Osborne, J.; Mukai, K. (1989). "New Orbital and Spin Ephemerides of the Intermediate Polar Fo-Aquarii = H:2215-086". Monthly Notices of the Royal Astronomical Society. 238 (3): 1233–1246. Bibcode:1989MNRAS.238.1233O. doi:10.1093/mnras/238.4.1233.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^ VSX; Otero, S. A. (24 May 2011). "FO Aquarii". AAVSO Website. American Association of Variable Star Observers. Retrieved 10 October 2014.

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[2MASS-1] ^ ^a ^b ^c ^d ^e ^f ^g Cutri, R. M.; Skrutskie, M. F.; van Dyk, S.; Beichman, C. A.; Carpenter, J. M.; Chester, T.; Cambresy, L.; Evans, T.; Fowler, J.; Gizis, J.; Howard, E.; Huchra, J.; Jarrett, T.; Kopan, E. L.; Kirkpatrick, J. D.; Light, R. M.; Marsh, K. A.; McCallon, H.; Schneider, S.; Stiening, R.; Sykes, M.; Weinberg, M.; Wheaton, W. A.; Wheelock, S.; Zacarias, N. (2003). "2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". University of Massachusetts and Infrared Processing and Analysis Center. IPAC/California Institute of Technology. Bibcode:2003yCat.2246....0C.

[GCVS-2] Samus’, N. N.; Goranskii, V. P.; Durlevich, O. V.; Zharova, A. V.; Kazarovets, E. V.; Kireeva, N. N.; Pastukhova, E. N.; Williams, D. B.; Hazen, M. L. (2003). "An electronic version of the second volume of the General Catalogue of Variable Stars with improved coordinates". Astronomy Letters. 29 (7): 468–479. Bibcode:2003AstL...29..468S. doi:10.1134/1.1589864.

[Pekön2012-3] Pekön, Y.; Balman, Ş. (2012). "Orbital-phase-resolved Spectroscopy of the Intermediate Polar FO Aqr Using XMM-Newton Observatory Data". The Astronomical Journal. 144 (2): 53. Bibcode:2012AJ....144...53P. doi:10.1088/0004-6256/144/2/53.

[Osborne_1989-4] Osborne, J.; Mukai, K. (1989). "New Orbital and Spin Ephemerides of the Intermediate Polar Fo-Aquarii = H:2215-086". Monthly Notices of the Royal Astronomical Society. 238 (3): 1233–1246. Bibcode:1989MNRAS.238.1233O. doi:10.1093/mnras/238.4.1233.{{cite journal}}: CS1 maint: unflagged free DOI (link)

[AAVSO-5] VSX; Otero, S. A. (24 May 2011). "FO Aquarii". AAVSO Website. American Association of Variable Star Observers. Retrieved 10 October 2014.

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