RR Caeli information

RR Caeli
	; A white light light curve for RR Caeli, adapted from Maxted et al. (2007)
Observation data; Epoch J2000 Equinox J2000
Constellation	Caelum
Right ascension	04h 21m 05.563s
Declination	−48° 39′ 07.06″
Apparent magnitude (V)	14.40
Characteristics
Evolutionary stage	White dwarf + red dwarf
Spectral type	DA7.8 + M4
U−B color index	−0.42
B−V color index	0.52
Variable type	Algol
Astrometry
Proper motion (μ)	RA: 30.030 mas/yr ; Dec.: −533.886 mas/yr
Parallax (π)	47.2000 ± 0.0200 mas
Distance	69.10 ± 0.03 ly ; (21.186 ± 0.009 pc)
Orbit
Period (P)	7.289 h
Semi-major axis (a)	1.46 R☉
Eccentricity (e)	0
Inclination (i)	87.9°
Semi-amplitude (K1); (primary)	48 km/s
Semi-amplitude (K2); (secondary)	196 km/s
Details
White dwarf
Mass	0.448±0.002 M☉
Radius	0.01568±0.00009 R☉
Luminosity (bolometric)	0.0007 ± 0.00015 L☉
Surface gravity (log g)	(7.67–7.72) ± 0.06 cgs
Temperature	7540 ± 175 K
Red dwarf
Mass	(0.182–0.183) ± 0.012 M☉
Radius	(0.203–0.215) ± 0.015 R☉
Luminosity (bolometric)	0.0038 ± 0.0013 L☉
Surface gravity (log g)	(5.04–5.09) ± 0.04 cgs
Temperature	3100 ± 113 K
Other designations
	RR Caeli, LFT 349, WD 0419-487, GJ 2034, 2MASS J04210556-4839070, GSC 08072-01454, Gaia DR3 4788741548375134336
Database references
SIMBAD	data
Exoplanet Archive	data
ARICNS	data

RR Caeli is an eclipsing binary star in the constellation Caelum. It is 69 light years from Earth.

^ ^a ^b Cite error: The named reference Maxted was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e Cite error: The named reference dr3 was invoked but never defined (see the help page).
^ ^a ^b ^c Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
^ ^a ^b ^c ^d Cite error: The named reference Parsons2017 was invoked but never defined (see the help page).
^ Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.
^ "V* RR Caeli – Eclipsing binary of Algol type (detached)". SIMBAD. Retrieved 18 February 2013.

Cite error: There are <ref group=note> tags on this page, but the references will not show without a {{reflist|group=note}} template (see the help page).

[Maxted-1] Cite error: The named reference Maxted was invoked but never defined (see the help page).

[dr3-2] Cite error: The named reference dr3 was invoked but never defined (see the help page).

[ubv-3] Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.

[Parsons2017-4] Cite error: The named reference Parsons2017 was invoked but never defined (see the help page).

[gcvs-5] Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.

[RRSimbad-7] "V* RR Caeli – Eclipsing binary of Algol type (detached)". SIMBAD. Retrieved 18 February 2013.

Observation data Epoch J2000 Equinox J2000
A white light light curve for RR Caeli, adapted from Maxted et al. (2007)^[1]
Constellation	Caelum
Right ascension	04^h 21^m 05.563^s^[2]
Declination	−48° 39′ 07.06″^[2]
Apparent magnitude (V)	14.40^[3]
Characteristics
Evolutionary stage	White dwarf + red dwarf
Spectral type	DA7.8 + M4^[4]
U−B color index	−0.42 ^[3]
B−V color index	0.52^[3]
Variable type	Algol^[5]
Astrometry

Proper motion (μ)	RA: 30.030^[2] mas/yr Dec.: −533.886^[2] mas/yr
Parallax (π)	47.2000 ± 0.0200 mas^[2]
Distance	69.10 ± 0.03 ly (21.186 ± 0.009 pc)

Orbit^[4]
Period (P)	7.289 h
Semi-major axis (a)	1.46 `R`_☉
Eccentricity (e)	0
Inclination (i)	87.9°
Semi-amplitude (K₁) (primary)	48 km/s
Semi-amplitude (K₂) (secondary)	196 km/s
Details^[1]
White dwarf
Mass	0.448±0.002^[4] `M`_☉
Radius	0.01568±0.00009^[4] `R`_☉
Luminosity (bolometric)	0.0007 ± 0.00015^{[note 1]} `L`_☉
Surface gravity (log g)	(7.67–7.72) ± 0.06 cgs
Temperature	7540 ± 175 K
Red dwarf
Mass	(0.182–0.183) ± 0.012 `M`_☉
Radius	(0.203–0.215) ± 0.015 `R`_☉
Luminosity (bolometric)	0.0038 ± 0.0013^{[note 1]} `L`_☉
Surface gravity (log g)	(5.04–5.09) ± 0.04 cgs
Temperature	3100 ± 113 K
Other designations
RR Caeli, LFT 349, WD 0419-487, GJ 2034, 2MASS J04210556-4839070, GSC 08072-01454, Gaia DR3 4788741548375134336^[6]
Database references
SIMBAD	data
Exoplanet Archive	data
ARICNS	data

RR Caeli information

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