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Star in the constellation Perseus
Mu Persei
Location of μ Persei (circled)
Observation data
Epoch
J2000
Equinox
J2000
Constellation
Perseus
Right ascension
04h 14m 53.86253s
[1]
Declination
+48° 24′ 33.5912″
[1]
Apparent magnitude (V)
+4.16
[2]
Characteristics
Spectral type
G0Ib
[3] + B9.5
[4]
B−V
color index
0.935± 0.002
[5]
Astrometry
Radial velocity (Rv ) 26.46
[6] km/s
Proper motion (μ)
RA: 5.52
[1]
mas /
yr
Dec.: −17.37
[1]
mas /
yr
Parallax (π) 3.62 ± 0.20
mas
[1]
Distance 900 ± 50
ly (280 ± 20
pc )
Absolute magnitude (MV ) −3.08
[5]
Orbit
[7]
Period (P) 284 d
Semi-major axis (a) 18.8 ± 8.8 mas
Eccentricity (e) 0.062
Inclination (i) 74 ± 24°
Longitude of the node (Ω) 296 ± 18°
Periastron
epoch (T) 2,420,062
Argument of periastron (ω) (secondary)302°
Details
Radius ~53
[8]
R ☉
Luminosity ~2030
[8]
L ☉
Surface gravity (log g ) 1.74
[9]
cgs
Temperature 5418
[9]
K
Metallicity [Fe/H]0.09
[9]
dex
Rotational velocity (v sin i ) 12
[10] km/s
Other designations
Mu Per, μ Per ,
51 Persei ,
NSV 1518,
BD +48 1063 ,
FK5 1117,
GC 5099,
HD 26630,
HIP 19812,
HR 1303,
SAO 39404,
PPM 46912,
CCDM J04149+4824A ,
WDS J04149+4825A
[11]
Database references
SIMBAD
data
Mu Persei ,
Latinised from μ Persei , is a
binary star system in the
northern
constellation of
Perseus . It is visible to the naked eye as a point of light with a combined
apparent visual magnitude of +4.16.
[2] The distance to this system is approximately 900
light-years based on
parallax measurements.
[1] It is drifting further away with a
radial velocity of +26 km/s.
[6]
Mu Persei is a
spectroscopic binary with an
orbital period of 284 days and an
eccentricity of about 0.06.
[7] The primary component is a yellow
G-type
supergiant star. With an
effective temperature of about 5,400
K and a radius of 53
solar radii , this star has the luminosity of about 2,030 times
that of the Sun .
[8] The companion is a
B-type star with a class of B9.5
[4]
Mu Persei is moving through the galaxy at a speed of 35.6 km/s relative to the Sun. Its projected galactic orbit carries it between 23,900 and 32,400 light-years from the center of the galaxy.
[12]
Mu Persei came closest to the Sun 5.6 million years ago when it had brightened to magnitude 3.25 from a distance of 600 light-years.
[12]
Naming
In
Chinese , 天船 (Tiān Chuán ), meaning
Celestial Boat , refers to an
asterism consisting of μ Persei,
η Persei ,
γ Persei ,
α Persei ,
ψ Persei ,
δ Persei ,
48 Persei and
HD 27084 . Consequently, μ Persei itself is known as 天船七 (Tiān Chuán qī , English: the Seventh Star of Celestial Boat ).
[13]
References
^
a
b
c
d
e
f van Leeuwen, F.; et al. (2007).
"Validation of the new Hipparcos reduction" . Astronomy and Astrophysics . 474 (2): 653–664.
arXiv :
0708.1752 .
Bibcode :
2007A&A...474..653V .
doi :
10.1051/0004-6361:20078357 .
S2CID
18759600 .
^
a
b Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues . 2237 .
Bibcode :
2002yCat.2237....0D .
^ Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series . 71 : 245.
Bibcode :
1989ApJS...71..245K .
doi :
10.1086/191373 .
S2CID
123149047 .
^
a
b Pantaleoni González, M.; Maíz Apellániz, J.; Barbá, R. H.; Negueruela, I. (January 2020).
"A Catalog of Galactic Multiple Systems with a Red Supergiant and a B Star" . Research Notes of the AAS . 4 (1): 12.
arXiv :
2001.11680 .
Bibcode :
2020RNAAS...4...12P .
doi :
10.3847/2515-5172/ab712b .
S2CID
211003674 . 12.
^
a
b Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331,
arXiv :
1108.4971 ,
Bibcode :
2012AstL...38..331A ,
doi :
10.1134/S1063773712050015 ,
S2CID
119257644 .
^
a
b Soubiran, C.; Bienaymé, O.; Mishenina, T. V.; Kovtyukh, V. V. (2008). "Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants". Astronomy and Astrophysics . 480 (1): 91–101.
arXiv :
0712.1370 .
Bibcode :
2008A&A...480...91S .
doi :
10.1051/0004-6361:20078788 .
S2CID
16602121 .
^
a
b Alden, Harold L. (1925).
"Apparent orbit of μ Persei" . Astronomical Journal . 36 (851): 81–82.
Bibcode :
1925AJ.....36...81A .
doi :
10.1086/104676 .
^
a
b
c
MU PER (Mu Persei)
^
a
b
c Luck, R. Earle (2014).
"Parameters and Abundances in Luminous Stars" . The Astronomical Journal . 147 (6): 137.
Bibcode :
2014AJ....147..137L .
doi :
10.1088/0004-6256/147/6/137 .
^ de Medeiros, J. R.; Udry, S.; Burki, G.; Mayor, M. (2002).
"A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars" (PDF) . Astronomy and Astrophysics . 395 : 97–98.
Bibcode :
2002A&A...395...97D .
doi :
10.1051/0004-6361:20021214 .
^
"* mu. Per" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 23 February 2017 .
^
a
b
Mu Persei (HIP 19812)
Archived 2013-04-14 at
archive.today
^ (in Chinese)
AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 11 日