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Mu Persei

Location of μ Persei (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Perseus
Right ascension	04 14 53.86253
Declination	+48° 24′ 33.5912″
Apparent magnitude (V)	+4.16
Characteristics
Spectral type	G0Ib + B9.5
B−V color index	0.935±0.002
Astrometry
Radial velocity (Rv)	26.46 km/s
Proper motion (μ)	RA: 5.52 mas/yr Dec.: −17.37 mas/yr
Parallax (π)	3.62 ± 0.20 mas
Distance	900 ± 50 ly (280 ± 20 pc)
Absolute magnitude (MV)	−3.08
Orbit
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 R☉
Luminosity	~2030 L☉
Surface gravity (log g)	1.74 cgs
Temperature	5418 K
Metallicity	0.09 dex
Rotational velocity (v sin i)	12 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
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. The distance to this system is approximately 900 light-years based on parallax measurements. It is drifting further away with a radial velocity of +26 km/s.

Mu Persei is a spectroscopic binary with an orbital period of 284 days and an eccentricity of about 0.06. 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. The companion is a B-type star with a class of B9.5

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.

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.

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).

References

1. ^ 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.
2. ^ 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.
3. 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.
4. ^ 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.
5. ^ 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.
6. ^ 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.
7. ^ Alden, Harold L. (1925). "Apparent orbit of μ Persei". Astronomical Journal. 36 (851): 81–82. Bibcode:1925AJ.....36...81A. doi:10.1086/104676.
8. ^ MU PER (Mu Persei)
9. ^ 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.
10. 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.
11. "* mu. Per". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 February 2017.
12. ^ Mu Persei (HIP 19812) Archived 2013-04-14 at archive.today
13. (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 11 日 Archived 2012-02-04 at the Wayback Machine

v t e Constellation of Perseus
List of stars in Perseus Perseus in Chinese astronomy
Stars	Bayer α (Mirfak) β (Algol) γ δ ε ζ η (Miram) θ ι κ (Misam) λ μ ν ξ (Menkib) ο (Atik) π (Gorgonea Secunda) ρ (Gorgonea Tertia) σ τ φ ψ ω (Gorgonea Quarta) b Flamsteed 1 2 3 4 (g) 5 7 8 9 (i) 10 11 12 14 16 17 20 21 24 29 30 31 32 (l) 34 36 40 (o) 42 (n) 43 (A) 48 (c) 49 50 52 (f) 53 (d) 54 55 56 57 (m) 58 (e) 59 1 Aur Variable S T U V X Z RS RT RV RW RY ST SU SV TZ UV UX UY VX XX XY XZ YZ AB AG AR AS AW AX BM DM DY FO GK IK IP IQ IU IW IX IZ KP KS KT KW LX V351 V356 V357 V361 V376 V380 V386 V392 V396 V400 V423 V432 V440 V459 V461 V471 V472 V473 V480 V488 V490 V492 V505 V509 V518 V520 (61 And) V521 V545 V551 V572 V573 V575 V576 V621 V718 V1024 HR 470 526 529 538 540 621 641 787 792 810 820 831 842 846 849 864 865 876 885 886 890 894 918 (k) 920 923 930 949 950 956 964 966 969 973 975 979 986 991 1001 1019 1034 1037 1041 1047 1051 1056 1059 1074 1097 1113 1127 1130 1133 1141 1160 1164 1176 1191 1197 1198 1207 1215 1226 1234 1286 1301 1330 1333 1337 1344 1371 1390 1419 1424 1482 1489 1493 1500 1514 HD 13519 14433 14434 16691 16760 17092 17245 17605 21684 22781 23301 23596 25329 26702 29587 Other BD+31 643 BD+48 740 G 38-29 G 95-57 GD 61 HAT-P-15 (Berehynia) HAT-P-29 (Muspelheim) IRAS 04296+3429 L1448-IRS2E LkHα 101 LRLL 54361 NGC 1333 13 NGC 1333 IRAS 2A NGC 1333 IRAS 4A NGC 1333 IRAS 4B NGC 1624-2 PSR B0355+54 PSR J0357+3205 WR 4
Exoplanets WASP-11b/HAT-P-10b
Star clusters	NGC 869 (h) 884 (χ) 957 1039 1220 1285 1342 1444 1513 1528 1545 1624 Other Alpha Persei Cluster IC 348 Trumpler 2
Nebulae	NGC 650 (Little Dumbbell Nebula) 1333 1491 1499 (California Nebula) 1579 Other Barnard 203 Wreath Nebula
Galaxies	NGC 1003 1023 1058 1077 1086 1159 1160 1161 1167 1169 1175 (Peanut Galaxy) 1198 1250 1259 1260 1264 1265 1267 1268 1270 1271 1272 1273 1274 1275 1277 1278 1279 1281 1282 1283 1293 1294 1334 Other 1H 0323+342 IC 310 NRAO 140 UGC 2885 (Godzilla galaxy) 4C +37.11
Galaxy clusters Perseus Cluster
Astronomical events SN 2006gy Perseids
Category

• G-type supergiants
• Spectroscopic binaries
• Perseus (constellation)
• Bayer objects
• Durchmusterung objects
• Flamsteed objects
• Henry Draper Catalogue objects
• Hipparcos objects
• Bright Star Catalogue objects