RX Leporis

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]
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[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 (Rv)46.1[1] km/s
Parallax (π)6.71 ± 0.44 mas[1]
Distance490 ± 30 ly
(149 ± 10 pc)
Details
Mass1–4[4] M☉
Radius100–200[4] R☉
Luminosity1500–4500[4] L☉
Temperature3300[4] K
Other designations
HD 33664, HR 1693, HIP 24169, BD–12° 1092, SAO 150206[1]
Database references
SIMBADdata

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.

See also

References
  1. "RX Leporis". SIMBAD Astronomical Database. Retrieved 2012-08-31.
  2. "GCVS Query=RX Lep". General Catalogue of Variable Stars @ Sternberg Astronomical Institute, Moscow, Russia. Retrieved 2012-08-31.
  3. "RX Leporis". AAVSO: Variable Star Plotter (VSP). Retrieved 2012-08-31.
  4. Jim Kaler. "IOTA LEP (Iota Leporis) and RX Lep". University of Illinois. Retrieved 2012-08-31.
  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. doi:10.1086/322153. Retrieved 20 January 2022.


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