RX Leporis

RX Leporis
	; Red giant RX Lep is 4 degrees south of Rigel
Observation data; Epoch J2000 Equinox J2000
Constellation	Lepus
Right ascension	05h 11m 22.87s
Declination	−11° 50′ 56.72″
Apparent magnitude (V)	5–7.4
Characteristics
Spectral type	M6.2III
Variable type	Semi-regular pulsating (SRB)
Astrometry
Radial velocity (Rv)	46.1 km/s
Parallax (π)	6.71 ± 0.44 mas
Distance	490 ± 30 ly ; (149 ± 10 pc)
Details
Mass	1–4 M☉
Radius	100–200 R☉
Luminosity	1500–4500 L☉
Temperature	3300 K
Other designations
	HD 33664, HR 1693, HIP 24169, BD–12° 1092, SAO 150206
Database references
SIMBAD	data

RX Leporis (RX Lep) is a star in the constellation of Lepus. It is a red giant and is a semi-regular pulsating star.

A visual band light curve for RX Leporis. The main plot shows the long-term brightness variation, and the inset plot shows the short-term variation. Adapted from Percy *et al.* (2001)^[5]

It has an apparent magnitude that varies from about 5 to 7.4.^[2] At its brightest it is dimly visible to the naked eye, and at its dimmest can be located with binoculars. In the sky it is about 4 degrees south of Rigel and is located next to Iota Leporis.

References

^ ^a ^b ^c ^d ^e ^f "RX Leporis". SIMBAD Astronomical Database. Retrieved 2012-08-31.
^ ^a ^b ^c ^d "GCVS Query=RX Lep". General Catalogue of Variable Stars @ Sternberg Astronomical Institute, Moscow, Russia. Retrieved 2012-08-31.
^ ^a ^b "RX Leporis". AAVSO: Variable Star Plotter (VSP). Archived from the original on August 6, 2011. Retrieved 2012-08-31.
^ ^a ^b ^c ^d Jim Kaler. "IOTA LEP (Iota Leporis) and RX Lep". University of Illinois. Retrieved 2012-08-31.
^ Percy, John R.; Wilson, Joseph B.; Henry, Gregory W. (August 2001). "Long-Term VRI Photometry of Small-Amplitude Red Variables. I. Light Curves and Periods". Publications of the Astronomical Society of the Pacific. 113 (786): 983–996. Bibcode:2001PASP..113..983P. doi:10.1086/322153. S2CID 14609175.

External links

RX Leporis on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
AAVSO: Quick Look View of AAVSO Observations (get recent magnitude estimates for RX Lep)

This variable star–related article is a stub. You can help Wikipedia by expanding it.

[SIMBAD-RX-Lep-1] ^ ^a ^b ^c ^d ^e ^f "RX Leporis". SIMBAD Astronomical Database. Retrieved 2012-08-31.

[GCVS-RX-Lep-2] "GCVS Query=RX Lep". General Catalogue of Variable Stars @ Sternberg Astronomical Institute, Moscow, Russia. Retrieved 2012-08-31.

[AAVSO-VSP-3] "RX Leporis". AAVSO: Variable Star Plotter (VSP). Archived from the original on August 6, 2011. Retrieved 2012-08-31.

[Kaler-4] Jim Kaler. "IOTA LEP (Iota Leporis) and RX Lep". University of Illinois. Retrieved 2012-08-31.

[Percy2001-5] Percy, John R.; Wilson, Joseph B.; Henry, Gregory W. (August 2001). "Long-Term VRI Photometry of Small-Amplitude Red Variables. I. Light Curves and Periods". Publications of the Astronomical Society of the Pacific. 113 (786): 983–996. Bibcode:2001PASP..113..983P. doi:10.1086/322153. S2CID 14609175.

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Observation data Epoch J2000 Equinox J2000
Red giant RX Lep is 4 degrees south of Rigel
Constellation	Lepus
Right ascension	05^h 11^m 22.87^s^[1]
Declination	−11° 50′ 56.72″
Apparent magnitude (V)	5–7.4^[2]^[3]
Characteristics
Spectral type	M6.2III^[1]^[2]^[3]
Variable type	Semi-regular pulsating (SRB)^[1]^[2]
Astrometry

Radial velocity (R_v)	46.1^[1] km/s
Parallax (π)	6.71 ± 0.44 mas^[1]
Distance	490 ± 30 ly (149 ± 10 pc)

Details

Mass	1–4^[4] `M`_☉
Radius	100–200^[4] `R`_☉
Luminosity	1500–4500^[4] `L`_☉
Temperature	3300^[4] K

Other designations
HD 33664, HR 1693, HIP 24169, BD–12° 1092, SAO 150206^[1]
Database references
SIMBAD	data

See also

References

External links