990 Yerkes
main-belt asteroid
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Summary
990 Yerkes is an asteroid[1]. It has Wikipedia articles in 20 language editions, a strong signal of global cultural recognition.[2]
Key Facts
- Discoverer or inventor: George Van Biesbroeck[3]
- Site of astronomical discovery: Yerkes Observatory[4]
- Named after: Yerkes Observatory[5]
- Follows: 989 Schwassmannia[6]
- Followed by: 991 McDonalda[7]
- Minor planet group: asteroid belt[8]
- Parent astronomical body: Sun[9]
- Provisional designation: 1922 MZ[10], 1961 VB1[11], A913 UA[12], A922 WE[13]
- Time of discovery or invention: November 23, 1922[14]
- Significant event: naming[15]
- Orbital eccentricity: 0.2172447415432369[16]
- Absolute magnitude: 11.94[17]
- Orbital inclination: 8.783036196205748 degree[18]
- Orbital period: 1592.406158625063 day[19]
- Rotation period: 24.56 hour[20]
- Longitude of ascending node: 353.9272249303151 degree[21]
- Semi-major axis of an orbit: 2.668723712220905 astronomical unit[22]
- Apoapsis: 3.248489905332643 astronomical unit[23]
- Periapsis: 2.088957519109167 astronomical unit[24]
- Argument of periapsis: 9.28544128656949 degree[25]
- Mean anomaly: 266.0336623679453 degree[26]
- Diameter: 21.428 km[27]
- Albedo: 0.061[28]
- Epoch: November 21, 2025[29]
- Time of periapsis: 2461416.1460409686 Julian day[30]
Why It Matters
990 Yerkes is known by 26 alternative names across languages and contexts.[31]