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OverviewAI-generated
79 Eurynome is an S-type asteroid located in the asteroid belt, orbiting the Sun. It was discovered on September 14, 1863, by James Craig Watson at the Detroit Observatory. The object received the provisional designation A863 RA and is named after Eurynome. In the sequence of numbered asteroids, it follows 78 Diana and is followed by 80 Sappho.
Physical measurements indicate a diameter of 63.479 kilometers and an albedo of 0.287. Its rotation period is 5.978 hours. The asteroid has an apparent magnitude of 9.35 and an absolute magnitude of 7.78. Orbital parameters include a semi-major axis of 2.443945322932561, an orbital inclination of 4.622, and an orbital eccentricity of 0.1910249477645753. The periapsis is 1.97709079527989, while the apoapsis is 2.910799850585231.
Synthesized by Vinony from 35 facts across 4 sources: Wikidata, NASA, Jpl Sbdb, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.
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via NASA APOD
Small body data
79 Eurynome (A863 RA)
- Orbit class
- Main-belt Asteroid
- Diameter
- 63.479 km
- Albedo
- 0.287
- Rotation period
- 5.978 h
- Absolute magnitude
- 7.780 H
- Earth MOID
- 0.987 AU
via NASA/JPL Small-Body Database
Key facts
- Discovered by
- James Craig Watson
- Discovery date
- September 14, 1863
- Pronunciation
- / j ʊ ˈ r ɪ n ə m iː /
- Named after
- Eurynome
- Minor planet category
- Main belt
- Adjectives
- Eurynomean, Eurynomian
- Aphelion
- 435.949 million km (2.914 AU)
- Perihelion
- 295.538 million km (1.976 AU)
- Semi major axis
- 365.743 million km (2.445 AU )
- Orbital period sidereal
- 1396.288 d (3.82 a )
- Average orbital speed
- 18.87 km/s
- Mean anomaly
- 149.498°
- Inclination
- 4.622°
- Longitude of ascending node
- 206.802°
- Argument of perihelion
- 200.384°
- Dimensions
- 66.5 km
- Synodic rotation period
- 5.978 h
- Spectral type
- S
via Wikipedia infobox
Wikidata facts
- Instance of
- asteroid
- Named after
- Eurynome
- Followed by
- 80 Sappho
- Follows
- 78 Diana
- Parent body
- Sun
- Minor-planet group
- asteroid belt
- Diameter
- 63.479
- Orbital period
- 1395.518682684264
- Image
- 79Eurynome (Lightcurve Inversion).png
Show 20 more facts
- discoverer or inventor
- James Craig Watson
- site of astronomical discovery
- Detroit Observatory
- time of discovery or invention
- 1863-09-14
- asteroid spectral type
- S-type asteroid
- orbital inclination
- 4.613161362928296
- albedo
- 0.287
- apparent magnitude
- 9.35
- Commons category
- 79 Eurynome
- provisional designation
- A863 RA
- rotation period
- 5.978
- absolute magnitude
- 7.78
- orbital eccentricity
- 0.1910249477645753
- semi-major axis of an orbit
- 2.443945322932561
- periapsis
- 1.97709079527989
- apoapsis
- 2.910799850585231
- longitude of ascending node
- 206.5013214058156
- argument of periapsis
- 201.39110619
- mean anomaly
- 127.3290571903125
- time of periapsis
- 2460506.916449562
- epoch
- November 21, 2025
Sources (3)
via Wikidata · CC0
~1 min read
Encyclopedic overview
79 Eurynome is a quite large and bright main-belt asteroid composed of silicate rock. Eurynome was discovered by J. C. Watson on September 14, 1863. It was his first asteroid discovery and is named after one of the many Eurynomes in Greek mythology. It is orbiting the Sun with a period of 3.82 years and has a rotation period of six hours. This is the eponymous member of a proposed asteroid family with at least 43 members, including 477 Italia and 917 Lyka.
References
Excerpted from Wikipedia’s “79 Eurynome” article, available under the CC BY-SA 4.0 licence.