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Dhanuśira
[[File:Dhanushira.jpg|thumb|The position of Dhanusira- the red circle envelopes the star. Image from Sidney Hall Urania, wikicommons<ref>https://upload.wikimedia.org/wikipedia/commons/7/7e/Sidney_Hall_-_Urania%27s_Mirror_-_Sagittarius_and_Corona_Australis%2C_Microscopium%2C_and_Telescopium.png</ref> ]]
[[File:Dhanushira.jpg|thumb|The position of Dhanusira- the red circle envelopes the star. Image from Sidney Hall Urania, wikicommons<ref>https://upload.wikimedia.org/wikipedia/commons/7/7e/Sidney_Hall_-_Urania%27s_Mirror_-_Sagittarius_and_Corona_Australis%2C_Microscopium%2C_and_Telescopium.png</ref> ]]
 
Dhanuśira is an Indian star name in modern [[Sagittarius]]. It appears engraved in historical instruments and likely refers to a star μ Sagittarii. However, it was occasionally mixed up with the star name Dhanuśarāgra (धनुशराग्र) for γ Sgr in the Arrow.


==Etymology and History==
==Etymology and History==
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===Origin of Constellation===
===Origin of Constellation===
The term ''Dhanuśira''  (धनुशिरः) literally means head of the bow. ''Dhanu'' - Bow, ''śira'' - head. This has been found in the catalogue of astrolabes translated from Persian. The names in these star lists of the dials have been coined based on their position. <ref>Sarma S R, 2023, A Descriptive Catalogue of Indian Astronomical Instruments, https://srsarma.in/catalogue.php</ref> The coordinates match with μ Sagittarii. It is in identified with μ Sagittarii in the astrolabe C 001<ref>Shylaja B S, 2026, Astrolabes as records of previous eruptions of the recurrent nova T CRB, Journal of Astrophysics and Astrornomy, 47,39</ref>  
[[File:Dhanusaragra_misidentification.jpg|thumb|Misidentification of two unequal terms]]
The term ''Dhanuśira''  (धनुशिरः) literally means head of the bow. ''Dhanu'' - Bow, ''śira'' - head. This has been found in the catalogue of astrolabes translated from Persian. The names in these star lists of the dials have been coined based on their position.<ref>Sarma S R, 2023, A Descriptive Catalogue of Indian Astronomical Instruments, https://srsarma.in/catalogue.php</ref> The coordinates match with μ Sagittarii. It is in identified with μ Sagittarii in the astrolabe C 001<ref>Shylaja B S, 2026, Astrolabes as records of previous eruptions of the recurrent nova T CRB, Journal of Astrophysics and Astrornomy, 47,39</ref>  


===Transfer and Transformation of the Constellation===
===Transfer and Transformation of the Constellation===

Latest revision as of 04:40, 12 August 2026

Authors: Shylaja, ASE Tech Team, Susanne M Hoffmann


The position of Dhanusira- the red circle envelopes the star. Image from Sidney Hall Urania, wikicommons[1]

Dhanuśira is an Indian star name in modern Sagittarius. It appears engraved in historical instruments and likely refers to a star μ Sagittarii. However, it was occasionally mixed up with the star name Dhanuśarāgra (धनुशराग्र) for γ Sgr in the Arrow.

Etymology and History

Name Variants

  • Dhanuśira (धनुशिरः)
  • Dhanushira

Origin of Constellation

Misidentification of two unequal terms

The term Dhanuśira (धनुशिरः) literally means head of the bow. Dhanu - Bow, śira - head. This has been found in the catalogue of astrolabes translated from Persian. The names in these star lists of the dials have been coined based on their position.[2] The coordinates match with μ Sagittarii. It is in identified with μ Sagittarii in the astrolabe C 001[3]

Transfer and Transformation of the Constellation

Mythology

The symbol of Dhanishta is ...

References

  1. https://upload.wikimedia.org/wikipedia/commons/7/7e/Sidney_Hall_-_Urania%27s_Mirror_-_Sagittarius_and_Corona_Australis%2C_Microscopium%2C_and_Telescopium.png
  2. Sarma S R, 2023, A Descriptive Catalogue of Indian Astronomical Instruments, https://srsarma.in/catalogue.php
  3. Shylaja B S, 2026, Astrolabes as records of previous eruptions of the recurrent nova T CRB, Journal of Astrophysics and Astrornomy, 47,39