RV Caeli

RV Caeli
Observation data; Epoch J2000 Equinox J2000
Constellation	Caelum
Right ascension	04h 28m 09.4637s
Declination	−41° 57′ 35.396″
Apparent magnitude (V)	6.425
Characteristics
Spectral type	M1III
B−V color index	1.617
Variable type	semiregular
Astrometry
Radial velocity (Rv)	97.90 km/s
Proper motion (μ)	RA: -14.75 mas/yr ; Dec.: 2.87 mas/yr
Parallax (π)	2.74 ± 0.35 mas absmag_v=−1.39
Distance	approx. 1,200 ly ; (approx. 360 pc)
Other designations
	CD-42°1510, HD 28552, HIP 20856, SAO 216821.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue,; CCDM (2002),; Bright Star Catalogue (5th rev. ed.)

RV Caeli is a semiregular variable star in the constellation Caelum. Located approximately 365 parsecs (1,190 ly) distant, Hipparcos has found it to vary between its photometric values of 6.44 and 6.56,^[2] which roughly corresponds with the magnitude as seen with the naked eye.

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ "RV Caeli". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 30 June 2014.
^ ^a ^b VSX (25 August 2009). "RV Cae". AAVSO Website. American Association of Variable Star Observers. Retrieved 30 June 2014.

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Observation data Epoch J2000 Equinox J2000
Constellation	Caelum
Right ascension	04^h 28^m 09.4637^s^[1]
Declination	−41° 57′ 35.396″^[1]
Apparent magnitude (V)	6.425^[1]
Characteristics
Spectral type	M1III^[1]
B−V color index	1.617^[1]
Variable type	semiregular^[2]
Astrometry

Radial velocity (R_v)	97.90^[1] km/s
Proper motion (μ)	RA: -14.75^[1] mas/yr Dec.: 2.87^[1] mas/yr
Parallax (π)	2.74 ± 0.35 mas^[1] absmag_v=−1.39
Distance	approx. 1,200 ly (approx. 360 pc)

Other designations
CD-42°1510, HD 28552, HIP 20856, SAO 216821.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)