51 Aurigae

Short description: K-type giant star in the constellation Auriga

51 Aurigae  Observation data
Equinox J2000.0]] (ICRS)

Constellation | Auriga
Right ascension |  06h 38m 39.53667s[1]
Declination | +39° 23′ 27.0659″[1]
Apparent magnitude (V) | 5.696[2]
Characteristics
Spectral type | K5III[2]
U−B color index | +1.56[3]
B−V color index | +1.34[3]
Astrometry
Radial velocity (Rv)| 31.98±0.15[4] km/s
Proper motion (μ)|  RA: −22.753[1] mas/yr
Dec.: −108.896[1] mas/yr
Parallax (π)| 7.0332 ± 0.1300[1] mas
Distance| 464 ± 9 ly
(142 ± 3 pc)
Absolute magnitude (MV)| 0.76[5]
Details
Mass| 1.58±0.53[6] M☉
Radius| 24.5±0.7[1] R☉
Luminosity| 178.0±3.9[1] L☉
Surface gravity (log g)| 1.84±0.11[6] cgs
Temperature| 4,277±92[6] K
Metallicity [Fe/H]| 0.01±0.05[6] dex
Age| 2.2[7] Gyr
Other designations

51 Aur, BD+39°1690, FK5 250, HD 47070, HIP 31771, HR 2419, SAO 59316

Database references
SIMBAD| data

51 Aurigae is a single[8] star in the northern constellation of Auriga. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of about 5.70.[2] Based on parallax, it is located some 464 light-years (142 parsecs) away from the Sun.[1] It is receding from the Earth with a heliocentric radial velocity of 32 km/s.[4]

At 2.2 billion years old,[7] 51 Aurigae has evolved off from the main sequence and is now a K-type giant star.[2] It is 1.58 times as massive as the Sun,[6] 24.5 times as wide, and 178 times as luminous.[1] It emits radiation from its photosphere with an effective temperature of about 4,277 K.[6]

## References

1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
2. ↑ 2.0 2.1 2.2 2.3 Kharchenko, N. V. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten 328 (9): 889. doi:10.1002/asna.200710776. Bibcode: 2007AN....328..889K.
3. ↑ 3.0 3.1 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode: 1986EgUBV........0M. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1986EgUBV........0M&db_key=AST&nosetcookie=1.
4. ↑ 4.0 4.1 Massarotti, Alessandro; Latham, David W.; Stefanik, Robert P.; Fogel, Jeffrey (2008). "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity". The Astronomical Journal 135 (1): 209–231. doi:10.1088/0004-6256/135/1/209. Bibcode: 2008AJ....135..209M.
5. ↑ Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics 352: 555–562. Bibcode: 1999A&A...352..555A.
6. ↑ 6.0 6.1 6.2 6.3 6.4 6.5 Feuillet, Diane K.; Bovy, Jo; Holtzman, Jon; Girardi, Léo; MacDonald, Nick; Majewski, Steven R.; Nidever, David L. (2016). "Determining Ages of APOGEE Giants with Known Distances". The Astrophysical Journal 817 (1): 40. doi:10.3847/0004-637X/817/1/40. Bibcode: 2016ApJ...817...40F.
7. ↑ 7.0 7.1 Martig, Marie; Fouesneau, Morgan; Rix, Hans-Walter; Ness, Melissa; Mészáros, Szabolcs; García-Hernández, D. A.; Pinsonneault, Marc; Serenelli, Aldo et al. (2016). "Red giant masses and ages derived from carbon and nitrogen abundances". Monthly Notices of the Royal Astronomical Society 456 (4): 3655. doi:10.1093/mnras/stv2830. Bibcode: 2016MNRAS.456.3655M.
8. ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.

* v
* t
* e

Auriga constellation

Stars (list)|

| Bayer|

* α (Capella)
* β (Menkalinan)
* δ
* ε (Almaaz)
* ζ (Saclateni)
* η (Haedus)
* θ (Mahasim)
* ι (Hassaleh)
* κ
* λ (Alhurr)
* μ
* ν
* ξ
* ο
* π
* ρ
* σ
* τ
* υ
* φ
* χ
* ψ1
* ψ2
* ψ3
* ψ4
* ψ5
* ψ6
* ψ7
* ψ8
* ψ9
* ω

|

Flamsteed|

* 2
* 5
* 6
* 9
* 12
* 14
* 16
* 18
* 19
* 22
* 26
* 28
* 36
* 38
* 39
* 40
* 41
* 42
* 43
* 45
* 47
* 49
* 51
* 53
* 54
* 59
* 60
* 62
* 63
* 64
* 65
* 66
* 25 Cam
* 33 Cam
* 34 Cam
* 35 Cam

Variable|

* R
* T
* RT (48)
* RU
* RW
* RX
* SS
* SU
* SX
* SY
* TT
* TZ
* UU
* UV
* UY
* ZZ
* WW
* AB
* AE
* AP
* AR (17)
* BF
* BK
* CL
* CQ
* EO
* FS
* GM
* HL
* HP
* HS
* HZ
* IM
* IQ
* IU
* KR
* LY
* MZ
* NO
* NV
* NY
* PU
* QR
* V352
* V363
* V382
* V390
* V394
* V403
* V405
* V410
* V414
* V420
* V433
* V440
* V538

HR|

* 1501
* 1528
* 1529
* 1535
* 1550
* 1558
* 1573
* 1615
* 1626
* 1639
* 1644
* 1668
* 1669
* 1692
* 1725
* 1733
* 1738
* 1752
* 1760
* 1775
* 1776
* 1794
* 1795
* 1796
* 1804
* 1822
* 1824
* 1825
* 1850
* 1854
* 1866
* 1869
* 1884
* 1904
* 1938
* 1945
* 1979
* 2003
* 2025
* 2038
* 2046
* 2066
* 2080
* 2081
* 2096
* 2105
* 2110
* 2112
* 2115
* 2122
* 2137
* 2139
* 2141
* 2147
* 2153
* 2172
* 2188
* 2189
* 2272
* 2319
* 2434
* 2452
* 2464
* 2471
* 2532
* 2542
* 2556
* 2573
* 2675
* 2775
* 2792

HD|

* 33463
* 33632
* 34078
* 34656
* 35202
* 35619
* 35681
* 37250
* 38200
* 38229
* 40650
* 40979
* 43691
* 45350
* 49364
* 49674 (Nervia)
* 51021
* 56171

Gliese|

* Gliese 268

Other|

* G 87-7
* GD 66
* HAT-P-9
* KELT-2A
* MWC 480
* SGR 0501+4516
* UGPS J0521+3640
* WASP-12

Star clusters|

| Open|

* Messier 36
* Messier 37
* Messier 38
* NGC 1664
* NGC 1724
* NGC 1778
* NGC 1798
* NGC 1857
* NGC 1883
* NGC 1893
* NGC 1907
* NGC 1931
* NGC 2013
* NGC 2126
* NGC 2165
* NGC 2192
* NGC 2240
* NGC 2281

|

Globular|

* Palomar 2

Nebulae|

| Star-forming|

* AFGL 5142
* IC 405 (Flaming Star Nebula)
* IRAS 05345+3157
* IRAS 05358+3543
* L1512
* L1517B
* S235
* S235 B

|

Planetary|

* IC 2149
* NGC 2242

SNR|

* HB 9
* VRO 42.05.01

Galaxies|

| NGC|

* 2208
* 2303
* 2387

|

Other|

* 3C 147
* 4C 41.17
* DA 93
* MCG +8-11-11
* OH 471
* QSO B0710+439
* QSO B0711+356

Galaxy
clusters|

* MACS J0717.5+3745

Other|

* GRB 910503
* GRB 980329

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