Lambda Aurigae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 19m 08.47s [1] |
| Declination | +40° 05′ 56.6″ [1] |
| Apparent magnitude (V) | 4.69 |
| Characteristics | |
| Spectral type | G1.5 IV-VFe-1 |
| U−B color index | 0.12 |
| B−V color index | 0.63 |
| R−I color index | 0.32 |
| Variable type | ? |
| Astrometry | |
| Radial velocity (Rv) | 66.4 km/s |
| Proper motion (μ) | RA: 518.99 ± 0.26 [1] mas/yr Dec.: -665.06 ± 0.13 [1] mas/yr |
| Parallax (π) | 79.17 ± 0.28 mas[1] |
| Distance | 41.2 ± 0.1 ly (12.63 ± 0.04 pc) |
| Absolute magnitude (MV) | 4.18 |
| Details | |
| Temperature | 5890 ± 4.3[2] K |
| Age | 5.0–7.9 × 109[3] years |
| Other designations | |
LHS 1753, FK5 1145, JP11 1022, ROT 755, 15 Aur, GC 6494, LFT 403, SAO 40233, GCRV 3155, LSPM J0519+4005, ADS 3886, LTT 11625, SPOCS 256, AG+40° 608, GJ 197, 2MASS J05190848+4005565, TD1 4327, ASCC 394559, HD 34411, N30 1135, UBV M 10785, BD+39° 1248, HIC 24813, NLTT 14837, UBV 5041, CCDM J05192+4007, HIP 24813, PLX 1199, USNO-B1.0 1301-00122816, Ci 20 326, HR 1729, PMC 90-93 767, uvby98 100034411, CSI+39 1248 1, IDS 05121+4001, PPM Star Catalogue 47977. | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
Lambda Aurigae (λ Aur, λ Aurigae) is a binary star in the constellation Auriga. It is approximately 41.2 light-years from Earth.
The primary component, λ Aurigae A, is a yellow G-type subgiant with an apparent magnitude of +4.69. Its companion, λ Aurigae B, is 29 arcseconds away and has an apparent magnitude of +13.4. The binary star also has two optical companions, the 12th magnitude λ Aurigae C at 42 arcseconds and the magnitude +8.6 λ Aurigae D, 146 arcseconds from the primary.
Name
Sometimes, this star is called by the name Al Hurr, meaning the fawn in Arabic[4].
This star, along with μ Aur and ρ Aur, were Kazwini's Al Ḣibāʽ, the Tent.[5]. According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars, Al Ḣibāʽ were the title for three stars : λ Aur as Al Ḣibāʽ I, μ Aur as Al Ḣibāʽ II and ρ Aur as Al Ḣibāʽ III[6]
In Chinese, 咸池 (Xián Chí), meaning Pool of Harmony, refers to an asterism consisting of λ Aurigae, ρ Aurigae and HD 36041.[7] Consequently, λ Aurigae itself is known as 咸池三 (Xián Chí sān, English: the Third Star of Pool of Harmony.)[8]
References
- ^ a b c d e van Leeuwen, F. (2007). "HIP 24813". Hipparcos, the New Reduction. Retrieved 2009-12-16.
- ^ Kovtyukh; et al. (2003). "High precision effective temperatures for 181 F-K dwarfs from line-depth ratios". Astronomy and Astrophysics. 411 (3): 559–564. doi:10.1051/0004-6361:20031378.
{{cite journal}}: Explicit use of et al. in:|author=(help) - ^ Mamajek, Eric E.; Hillenbrand, Lynne A. (2008). "Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics". The Astrophysical Journal. 687 (2): 1264–1293. Bibcode:2008ApJ...687.1264M. doi:10.1086/591785.
{{cite journal}}: Unknown parameter|month=ignored (help)CS1 maint: multiple names: authors list (link) - ^ Star Name - R.H.Allen p.92
- ^ Allen, R. H. (1963). Star Names: Their Lore and Meaning (Reprint ed.). New York, NY: Dover Publications Inc. p. 91. ISBN 0486210790. Retrieved 2010-12-12.
- ^ Jack W. Rhoads - Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars, Jet Propultion Laboratory, California Institue of Technology; November 15, 1971
- ^ Template:Zh icon 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 9789867332257.
- ^ Template:Zh icon AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 13 日
Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
|---|---|---|---|---|---|
| ADS 3886 B (BD+39 1248B ) | 05h 19m 03.6s | +40° 06' 32 | 13.4 | Simbad | |
| ADS 3886 C (BD+39 1248C) | 05h 19m 02.5s | +40° 06' 28 | 12.1 | Simbad | |
| ADS 3886 D (BD+39 1248D) | 05h 19m 06.3s | +40° 07' 15 | 8.6 | Simbad | |
| ADS 3886 E (BD+39 1248E) | 05h 19m30s | +40° 09' 00 | Simbad |
