File:Eridanus_constellation_map.svg · Wikimedia Commons · See Wikimedia Commons
Achernar is the ninth-brightest star visible in Earth's night sky and the brightest star in the constellation Eridanus, formally designated as Alpha Eridani. It is actually a binary system with two components, with the primary star being the one commonly referred to as Achernar.
AI-generated from the Wikipedia summary — may contain errors.
In the Vinony graph
Vinony's link graph records 269 inbound references to 水委一, and connects out to year, International Standard Serial Number and solar mass.
It is catalogued under topics including Bayer objects, Be stars and Brightest stars.
Vinony links it to 57 Wikipedia language editions.
Astronomical data · SIMBAD
- Object type
- Be*
- Spectral type
- B6Vpe
- Distance
- 139 light-years
- Redshift
- z = 0.000028253277987166925
- Coordinates
- RA 24.4285° · Dec -57.2368°
via SIMBAD · CDS Strasbourg
Wikidata facts
- Instance of
- Ap/Bp star
- Official name
- Achernar
- Constellation
- Eridanus
- Distance from Earth
- 43
- Radius
- 7.3
- Mass
- 6.7
- Variable-star type
- Lambda Eridani variable
- Image
- Position Alpha Eri.png
Show 19 more facts
- Commons category
- Achernar
- spectral class
- B5
- catalog code
- ALS 16724
- stellar rotational velocity
- 260
- apparent magnitude
- 0.88
- effective temperature
- 20230
- surface gravity
- 4000
- right ascension
- 24.428522833
- declination
- -57.236752806
- parallax
- 22.68
- radial velocity
- 19.0
- epoch
- J2000.0
- luminosity
- 1076
- flattening
- 0.75
- right ascension component of proper motion
- 92
- declination component of proper motion
- -34
- age estimated by a dating method
- 37.3
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- absolute magnitude
- -2.77
Sources (8)
via Wikidata · CC0
Article · 中文
水委一（英語：Achernar）也稱為波江座α星，是波江座最明亮的恆星，也是全天空第九亮的恆星，距離地球約139光年 ，位於波江座的南端。在全天空最明亮的九顆恆星中（天狼、老人、大角、南門二、織女、五車二、參宿七、南河三與水委一），水委一是最炙熱，顏色也是最藍的一顆。
Abstract from DBpedia / Wikipedia · CC BY-SA