Achernar: Difference between revisions
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[[File:Achernar profileCard SadeghFaghanpour-IAU-WGSN.jpg|thumb|Achernar profile card (CC BY Sadegh Faghanpour for IAU WGSN).]] | [[File:Achernar profileCard SadeghFaghanpour-IAU-WGSN.jpg|thumb|Achernar profile card (CC BY Sadegh Faghanpour for IAU WGSN).]] | ||
Arabic name آخر النهر (āḫiru ʾn-nahr) meaning | {{Infobox constellation | ||
| name = Achernar | |||
| native = آخر النهر | |||
| translation = the River's End | |||
| pronounce = | |||
| IPA = [achernar] | |||
| culture = IAU | |||
| RA = 24.42852283 | |||
| dec = -57.23675281 | |||
| areatotal = 0 | |||
| numbermainstars = 1 | |||
| numberbfstars = 1 | |||
| numberstarsplanets = | |||
| numberbrightstars = 0 | |||
| numbernearbystars = | |||
| brighteststarname = Achernar | |||
| starmagnitude = 0.46 | |||
| neareststarname = | |||
| stardistance = | |||
| numbermessierobjects = | |||
| meteorshowers = | |||
| bordering = Eri | |||
| notes = | |||
| cat = IAU-Star Name | |||
}} | |||
Arabic name آخر النهر (āḫiru ʾn-nahr) meaning the End of the River; originally used for θ Eri that was considered the end of the river in the ancient star catalog (''Almagest''). The name was transferred to α Eri in early modern times (around 1600) when the constellation was extended south to this new terminus.<ref>Kunitzsch, Paul; Smart, Tim (2006). A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations (2nd rev. ed.). Cambridge, Massachusetts: Sky Pub.</ref> | |||
==Etymology and History== | ==Etymology and History== | ||
[[File:Acherna Plancius1612.JPG|thumb|The spelling variant "Alcarnahar" for "Achernar" on Plancius' 1612 globe. ]] | [[File:Acherna Plancius1612.JPG|thumb|The spelling variant "Alcarnahar" for "Achernar" on Plancius' 1612 globe. ]] | ||
[[File:Achernar stickfigure SadeghFaghanpour-IAU-WGSN.jpg|thumb|Achernar stickfigure (CC BY Sadegh Faghanpour for IAU WGSN).]] | [[File:Achernar stickfigure SadeghFaghanpour-IAU-WGSN.jpg|thumb|Achernar stickfigure (CC BY Sadegh Faghanpour for IAU WGSN).]] | ||
In Ptolemy's Almagest (137 CE), the last star in the list of stars in the constellation The River Ποταμοῦ ἀστερισμός (modern [[Eridanus]]) is given as: | In Ptolemy's ''Almagest'' (137 CE), the last star in the list of stars in the constellation The River Ποταμοῦ ἀστερισμός (modern [[Eridanus]]) is given as: | ||
{| class="wikitable" | {| class="wikitable" | ||
!id | !id | ||
| Line 53: | Line 78: | ||
[[Category:IAU-Star Name]] | [[Category:IAU-Star Name]] | ||
[[Category:Eurasia]][[Category:Africa]] | [[Category:Eurasia]][[Category:Africa]] | ||
[[Category:Arabic]] | [[Category:Arabic]] [[Category:West Asian]] [[Category:Asian]] [[Category:North Africa]] | ||
[[Category:Asterism]][[Category:Eri]] | [[Category:Asterism]][[Category:Eri]] [[Category:Modern]] | ||
Latest revision as of 07:50, 10 July 2026
Authors: Susanne M Hoffmann, Youla Azkarrula, IanRidpath
| Asterism Info | |
| Native | آخر النهر |
|---|---|
| IPA | [achernar] |
| Translation | the River's End |
| Position (2000) | |
| Right ascension | 24.42852283 |
| Declination | -57.23675281 |
| Area | 0 sq. deg. |
| Stars | |
| Bright stars | 1 |
| Bayer/Flamsteed stars | 1 |
| Stars brighter than 3.00m | 0 |
| Brightest star | Achernar (0.46m) |
| Taxonomy | |
| category of asterism | IAU-Star Name |
| IAU- constellations | Eri |
Arabic name آخر النهر (āḫiru ʾn-nahr) meaning the End of the River; originally used for θ Eri that was considered the end of the river in the ancient star catalog (Almagest). The name was transferred to α Eri in early modern times (around 1600) when the constellation was extended south to this new terminus.[1]
Etymology and History
In Ptolemy's Almagest (137 CE), the last star in the list of stars in the constellation The River Ποταμοῦ ἀστερισμός (modern Eridanus) is given as:
| id | Greek
(Heiberg 1898) |
English
(Toomer 1984) |
ident. |
|---|---|---|---|
| Ποταμοῦ ἀστερισμός | The River constellation | ||
| 34 | ὁ ἔσχατος τοῦ Ποταμοῦ λαμπρός | The last star of the river, the bright one | tet Eri |
translated to Arabic this gives ...
| src: | |||
|---|---|---|---|
| 34 | ... آخر النهر | ... | tet Eri |
This was abbreviated and misread in various ways in early modern time; e.g. Acermar, Achernar, Alcarnahar... and many more variants of the spelling.
Mythology
IAU Working Group on Star Names
The name was discussed and approved by the IAU WGSN in 2016.
Weblinks
Reference
- References (general)
- References (early modern)
- Ian Ridpath's website (Star Tales – Eridanus )
- ↑ Kunitzsch, Paul; Smart, Tim (2006). A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations (2nd rev. ed.). Cambridge, Massachusetts: Sky Pub.
