Heryibwia

Authors: Susanne M Hoffmann, Eric Mamajek, ASE Tech Team

---

Heryibwia profile card (CC BY M.Sadegh Faghanpour for IAU-WGSN).

Heryibwia

Asterism Info
Native	Heryib Wia
Translation	The Middle of the Boat
Position (2000)
Right ascension	274.4068217
Declination	-36.76169016
Area	0 sq. deg.
Stars
Bright stars	1
Bayer/Flamsteed stars	1
Stars brighter than 3.00m	0
Brightest star	Heryibwia (3.11m)
Taxonomy
category of asterism	IAU-Star Name
IAU- constellations	Sgr

Heryibwia is a modern star name adopted by the International Astronomical Union in the IAU-Catalog of Star Names (IAU-CSN). Its origin is ancient Egyptian. It is the name of the star η Sgr in constellation Sagittarius.

Concordance, Etymology, History

For details see Wia.

IAU Working Group on Star Names

The name Heryibwia was discussed and adopted by the IAU WGSN in 2026 for the star designated η Sgr (HR 6832, HD 167618, HIP 89642, WDS J18176-3646A, Gaia DR3 4038055447778237312). The star is a red giant variable star 42 parsecs away with mean apparent V magnitude of 3.11, and Corbally (1984) spectrally classified the star as M3IIIab. Jim Kaler notes that the star is near the tip of the red giant branch and is "either with a dead helium core or having just fired the helium core up to fuse to carbon and oxygen." The star is part of a binary system with a faint, 8th magnitude companion eta Sgr B (HD 167618B, Gaia DR3 4038055447710652032) situated 3.5 arcseconds away, first reported by Sherburne Wesley Burnham in 1879. The binary system is IDed in the Washington Double Star Catalog as BU 760 (WDS J18176-3646). Corbally (1984) classified the companion B as G8:IV:. The binary has advanced approximately 10 degrees since 1879, and widened somewhat (2.8" to 3.5" in 2016). WGSN assigned the name Heryibwia to the A component of the η Sgr system.

• 
  Heryibwia profile card (CC BY M.Sadegh Faghanpour for IAU-WGSN).
• 
  Heryibwia stick figure (CC BY M.Sadegh Faghanpour for IAU-WGSN).
• 
  Babylonian "River Boat" constellation: see Magur.
• 
  Kenemu profile card (CC BY M.Sadegh Faghanpour for IAU-WGSN).
• 
  Kenemu stick figure (CC BY M.Sadegh Faghanpour for IAU-WGSN).
• 
  Qedty profile card (CC BY M.Sadegh Faghanpour for IAU-WGSN).
• 
  Qedty stick figure (CC BY M.Sadegh Faghanpour for IAU-WGSN).

Weblinks

• Jim Kaler site on eta Sgr: http://stars.astro.illinois.edu/sow/etasgr.html
• SIMBAD page for eta Sgr: https://simbad.cds.unistra.fr/simbad/sim-id?Ident=eta+Sgr

Reference

• References (general)
• References (early modern)
• Ian Ridpath's website (Star Tales )