Eta Persei
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 50m 41.810s[1] |
Declination | +55° 53′ 43.80″[1] |
Apparent magnitude (V) | 3.79[2] |
Characteristics | |
Spectral type | K3 Ib[3] |
U−B color index | +1.90[2] |
B−V color index | +1.69[2] |
Astrometry | |
Radial velocity (Rv) | −1.07±0.27[4] km/s |
Proper motion ( | RA: +16.346 mas/yr[1] Dec.: −13.518 mas/yr[1] |
Parallax ( | 3.2657 ± 0.1873 mas[1] |
Distance | 1,000 ± 60 ly (310 ± 20 pc) |
Absolute magnitude (MV) | −4.29[5] |
Details | |
Mass | 8±0.4[6] M☉ |
Radius | 173.1+9.69 −10.8[7] R☉ |
Luminosity | 7,508±864[7] L☉ |
Surface gravity (log g) | 0.26[7] cgs |
Temperature | 4082±30[7] K |
Rotational velocity (v sin i) | 5.8[3] km/s |
Age | 37.8±6.2[6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Eta Persei (
The two components of Eta Persei itself are designated Eta Persei A (officially named Miram /ˈmaɪræm/, a recent name for the system)[9] and B.
Nomenclature
![](https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Eta_Persei.jpg/220px-Eta_Persei.jpg)
Eta Persei mysteriously gained the named Miram in the 20th Century, though no source is known.[11][12] In 2016, the I
This star, together with Delta Persei, Psi Persei, Sigma Persei, Alpha Persei and Gamma Persei has been called the Segment of Perseus.[12]
In Chinese,
Properties
The primary star (
References
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c 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.
- ^ a b c 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". Astronomy and Astrophysics. 395: 97–98. arXiv:1312.3474. Bibcode:2002A&A...395...97D. doi:10.1051/0004-6361:20021214. S2CID 263226802.
- ^ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. S2CID 17804304.
- ^ Ryon, Jenna; Shetrone, Matthew D.; Smith, Graeme H. (2009). "Comparing the Ca ii H and K Emission Lines in Red Giant Stars". Publications of the Astronomical Society of the Pacific. 121 (882): 842. arXiv:0907.3346. Bibcode:2009PASP..121..842R. doi:10.1086/605456. S2CID 17821279.
- ^ a b Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011-01-01). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410: 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. ISSN 0035-8711. Eta Persei's database entry at VizieR.
- ^ a b c d e f Baines, Ellyn K.; Clark, James H., III; Schmitt, Henrique R.; Stone, Jordan M.; von Braun, Kaspar (2023-12-01). "33 New Stellar Angular Diameters from the NPOI, and Nearly 180 NPOI Diameters as an Ensemble". The Astronomical Journal. 166 (6): 268. Bibcode:2023AJ....166..268B. doi:10.3847/1538-3881/ad08be. ISSN 0004-6256.
{{cite journal}}
: CS1 maint: multiple names: authors list (link) - ^ "Washington Double Star Catalog". United States Naval Observatory. Archived from the original on 14 February 2011. Retrieved 2 January 2018.
- ^ a b "Naming Stars". IAU.org. Retrieved 16 December 2017.
- ^ Hessman, F. V.; Dhillon, V. S.; Winget, D. E.; Schreiber, M. R.; Horne, K.; Marsh, T. R.; Guenther, E.; Schwope, A.; Heber, U. (2010). "On the naming convention used for multiple star systems and extrasolar planets". arXiv:1012.0707 [astro-ph.SR].
- ^ Kaler, Jim. "Eta Persei". Retrieved 2017-02-11.
- ^ a b Allen, R. H. (1963). Star Names: Their Lore and Meaning (Reprint ed.). New York: Dover Publications Inc. p. 331. ISBN 0-486-21079-0. Retrieved 2012-09-04.
- ^ "I
AU Working Group on Star Names (WGSN)". Retrieved 22 May 2016. - ^ "WG Triennial Report (2015-2018) - Star Names" (PDF). p. 5. Retrieved 2018-07-14.
- ^ (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 - ^ "The Colour of Stars". Australia National Telescope Facility. 6 March 2024. Retrieved 2024-05-27.
- CS1 maint: multiple names: authors list
- Articles with Chinese-language sources (zh)
- Webarchive template wayback links
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- Short description is different from Wikidata
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- Bayer objects
- Perseus (constellation)
- K-type supergiants
- Stars with proper names
- Bright Star Catalogue objects
- Henry Draper Catalogue objects
- Flamsteed objects
- Durchmusterung objects
- Hipparcos objects
- Double stars