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Epsilon Eridani

Epsilon Eridani
Observasjonsdata
StjernebildeFloden
Tilsynelatende
størrelsesklasse
(V)
3,73
Karakteristikk
SpektralklasseK2, K2V, K2 V (k), K0, K2 V, K2V(k)
VariabelklasseBY Draconis variable, rotating variable star
Radialhastighet (Rv)16,376±0,0001 kilometer per sekund
Parallakse (π)310,5773±0,1355 millibogesekund
Absolutt størrelsesklasse (MV)6,192
Masse0,83±0,05 solmasse
Radius0,8306641±0,14994043 solradius
Rotasjonshastighet (v sin i)13,859±0,271 kilometer per sekund
Andre betegnelser
SAO 130564, HD 22049, HIP 16537, HR 1084, IRAS 03305-0937, 2MASS J03325591-0927298, GJ 144.0, GJ 144, ε Eri, 1RXS J033256.4-092727, 2EUVE J0332-09.4, CCDM J03329-0927A, EUVE J0332-09.4, FK5 127, GC 4244, GCRV 1962, HIC 16537, IRC -10048, JP11 792, LFT 291, LHS 1557, LPM 158, LTT 1675, N30 726, NLTT 11207, PLX 742, PLX 742.00, PMC 90-93 91, PPM 185905, RAFGL 497, RBS 439, ROT 531, SACS 76, SPOCS 171, TD1 2301, TYC 5296-1533-1, UBV 3410, uvby98 100022049, eps Eri, WDS J03329-0927A, WDS J03329-0927Aa,Ab, YZ 0 4513, YZ 99 836, Zkh 51, Ci 20 241, PM 03306-0938, RX J0332.9-0927, Gaia DR2 5164707970261630080, WEB 3160, 18 Eri, Gaia DR3 5164707970261890560, RAVE J033255.8-092730, TIC 118572803, UBV M 9580
Referansedatabaser
SIMBAD«data». 
ARICNS«data». 

Epsilon Eridani (ε Eri / ε Eridani) er en hovedseriestjerne i stjernebildet Floden, 10,5 lysår fra Jorden. Stjernen er den tredje nærmeste til Jorden av stjernene som kan ses med det blotte øye.

Epsilon Eridani har en planet med 1,55 ± 0,24 ganger Jupiters masse i en avstand av 3,38–3,50 AE.[1][2][3] Den er noe mindre enn Solen, og er noe kjøligere. Stjernen er fattig på tyngre grunnstoffer.

Epsilon Eridani

[rediger | rediger kilde]
  • Avstand fra Jorden: 10,5 lysår
  • Spektralklasse: K2 (oransje)
  • Kjente planeter: 1

Referanser

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  1. ^ Benedict, G. Fritz m. fl.. (November 2006), «The extrasolar planet e Eridani b – orbit and mass», The Astronomical Journal 132 (5): 2206–2218, arXiv:astro-ph/0610247, Bibcode 2006AJ....132.2206B, DOI:10.1086/508323. 
  2. ^ Wright, Jason; Marcy, Geoff (July 2010), Catalog of nearby exoplanets, California Planet Survey consortium, http://exoplanets.org, besøkt 2010-11-07. 
  3. ^ Butler, R. P. m. fl.. (2006), «Catalog of nearby exoplanets», The Astrophysical Journal 646: 505–522, arXiv:astro-ph/0607493, Bibcode 2006ApJ...646..505B, DOI:10.1086/504701. 
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Epsilon Eridani
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