Terebellum
HR 7597 · HIP 98066 · ω Sgr
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 4.7 mag
- Parallax
- 38.48 mas → about 84.8 light-years away
- Spectral type
- G3/G5III
- Right ascension
- 298.9598°
- Declination
- -26.2994°
- Designation
- HR 7597
- Bayer designation
- ω Sgr
- HIP number
- 98066
- IAU name adopted
- 2017-09-05
- Name language
- Latin
- Name origin (IAU)
- Ptolemy's Almagest lists four stars in a quadrilateral with ω Sgr the first in the list (the others being A, b, c Sgr). Bayer (1603) concludes this list with the note after "c": Has quatuor multi Terebellum seu τετράπλευρον vocant. A "terebellum" is an auger, so it designates the asterism at the tip of the tail and originally not a specific star.
Source:IAU Working Group on Star Names · checked 2026-11-02 ↗ESA Hipparcos Catalogue (ESA Gaia Archive) · checked 2026-11-03 ↗
Related
Constellation
In everyday life
- Light from this object takes about 85 years to reach Earth — the light you see tonight left around AD 1941 (official distance ÷ speed of light).
- At magnitude 4.7 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination -26.3° — it rises above the horizon in Seoul (37.6° N), so it is visible from Korea in the right season.
Worked out from this object's official values.