Mu¹ Cancri

Mu¹ Cancri
	File:BLCncLightCurve.png; A visual band light curve for BL Cancri, plotted from data presented by Tabur et al. (2009)
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Cancer
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	+5.99 (Template:Val)
Characteristics
Evolutionary stage	Asymptotic giant branch
Spectral type	M3 III
B−V Template:Engvar	+1.66
Variable type	Lb
Astrometry
Radial velocity (Rv)	Template:Val km/s
Proper motion (μ)	RA: −5.831 mas/yr ; Dec.: −9.488 mas/yr
Parallax (π)	5.4293±0.1351 mas
Distance	Template:Rnd ± Template:Rnd ly ; (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	−0.79
Details
Radius	Template:Val Template:Solar radius
Luminosity	Template:Val Template:Solar luminosity
Surface gravity (log g)	0.441 cgs
Temperature	Template:Val K
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
	Template:Odlist
Database references
SIMBAD	data

Template:Short description

Template:Other stars by Bayer designation

Script error: No such module "Check for unknown parameters".

Mu¹ Cancri, Latinised from μ¹ Cancri, is a variable star in the zodiac constellation of Cancer. Its name is a Bayer designation that is Latinized from μ¹ Cancri, and abbreviated Mu¹ Cnc or μ¹ Cnc. The "1" in the name is because (from Earth) it appears to be close to 10 Cancri, or Mu² Cancri. It is also known by the variable star designation BL Cancri, or BL Cnc. This star is dimly visible to the naked eye with an apparent visual magnitude that ranges from 5.87 down to 6.07.^[5] The position of the star near the ecliptic means it is subject to lunar occultations.^[12]

Parallax measurements put this star at about Template:Convert from the Sun.^[3] At that distance, the visual magnitude is diminished by an extinction factor of 0.28 due to interstellar dust.^[13] It is drifting further away with a line of sight velocity of +30 km/s.^[8]

The star Mu¹ Cancri is an evolved red giant currently on the asymptotic giant branch^[6] with a stellar classification of M3 III.^[7] The lack of technetium-99 in the spectrum indicates it has not yet gone through third dredge-up.^[14] The star has expanded to 57 times the radius of the Sun and it is radiating 565 times the Sun's luminosity from its enlarged photosphere at an effective temperature of Template:Val.^[9]

In 1967, Olin J. Eggen announced his discovery that Mu¹ Cancri is a variable star.^[15] It was given its variable star designation in 1972.^[16] It is a slow irregular variable^[7] with thermal pulsation periods of 22.6, 37.8 and 203.7 days.^[1]

References

Template:Reflist

Template:Stars of Cancer

↑ ^a ^b Cite error: Invalid <ref> tag; no text was provided for refs named tabur2009
↑ ^a ^b Cite error: Invalid <ref> tag; no text was provided for refs named Anderson2012
↑ ^a ^b ^c ^d ^e Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR3
↑ ^a ^b Cite error: Invalid <ref> tag; no text was provided for refs named Ducati2002
↑ ^a ^b Cite error: Invalid <ref> tag; no text was provided for refs named Samus_et_al_2017
↑ ^a ^b Cite error: Invalid <ref> tag; no text was provided for refs named Eggen1992
↑ ^a ^b ^c ^d Cite error: Invalid <ref> tag; no text was provided for refs named Lebzelter2003
↑ ^a ^b Cite error: Invalid <ref> tag; no text was provided for refs named deBruijne2012
↑ ^a ^b ^c ^d Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR2
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Ghosh_et_al_2019
↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Schneider_Anderson_1993
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Famaey2005
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Lebzelter_Hron_2003
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Eggen1967
↑ Cite error: Invalid <ref> tag; no text was provided for refs named Kukarkin1972

[tabur2009-1] Cite error: Invalid <ref> tag; no text was provided for refs named tabur2009

[Anderson2012-2] Cite error: Invalid <ref> tag; no text was provided for refs named Anderson2012

[GaiaDR3-3] Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR3

[Ducati2002-4] Cite error: Invalid <ref> tag; no text was provided for refs named Ducati2002

[Samus_et_al_2017-5] Cite error: Invalid <ref> tag; no text was provided for refs named Samus_et_al_2017

[Eggen1992-6] Cite error: Invalid <ref> tag; no text was provided for refs named Eggen1992

[Lebzelter2003-7] Cite error: Invalid <ref> tag; no text was provided for refs named Lebzelter2003

[deBruijne2012-8] Cite error: Invalid <ref> tag; no text was provided for refs named deBruijne2012

[GaiaDR2-9] Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR2

[Ghosh_et_al_2019-10] Cite error: Invalid <ref> tag; no text was provided for refs named Ghosh_et_al_2019

[SIMBAD-11] Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD

[Schneider_Anderson_1993-12] Cite error: Invalid <ref> tag; no text was provided for refs named Schneider_Anderson_1993

[Famaey2005-13] Cite error: Invalid <ref> tag; no text was provided for refs named Famaey2005

[Lebzelter_Hron_2003-14] Cite error: Invalid <ref> tag; no text was provided for refs named Lebzelter_Hron_2003

[Eggen1967-15] Cite error: Invalid <ref> tag; no text was provided for refs named Eggen1967

[Kukarkin1972-16] Cite error: Invalid <ref> tag; no text was provided for refs named Kukarkin1972

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
File:BLCncLightCurve.png A visual band light curve for BL Cancri, plotted from data presented by Tabur et al. (2009)^[1]
Constellation	Cancer^[2]
Right ascension	Template:RA^[3]
Declination	Template:DEC^[3]
Apparent magnitude (V)	+5.99^[4] (Template:Val)^[5]
Characteristics
Evolutionary stage	Asymptotic giant branch^[6]
Spectral type	M3 III^[7]
B−V Template:Engvar	+1.66^[4]
Variable type	Lb^[7]
Astrometry

Radial velocity (R_v)	Template:Val^[8] km/s
Proper motion (μ)	RA: −5.831 mas/yr^[3] Dec.: −9.488 mas/yr^[3]
Parallax (π)	5.4293±0.1351 mas^[3]
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (M_V)	−0.79^[2]

Details

Radius	Template:Val^[9] Template:Solar radius
Luminosity	Template:Val^[9] Template:Solar luminosity
Surface gravity (log g)	0.441^[10] cgs
Temperature	Template:Val^[9] K

Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
Template:Odlist^[11]
Database references
SIMBAD	data

Mu1 Cancri

References

Navigation menu

Search

Mu¹ Cancri