21943 Diannacowern
asteroid
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Key Facts
- Discoverer or inventor: Catalina Sky Survey[1]
- Site of astronomical discovery: Catalina Station[2]
- Follows: 21942 Subramanian[3]
- Followed by: (21944) 1999 VA118[4]
- Minor planet group: asteroid belt[5]
- Parent astronomical body: Sun[6]
- Provisional designation: 1998 FY107[7], 1999 VG114[8]
- Time of discovery or invention: November 9, 1999[9]
- Significant event: naming[10]
- Orbital eccentricity: 0.20[11], 0.2023655[12], 0.2025092761129433[13]
- Absolute magnitude: 14.2[14], 14.32[15]
- Orbital inclination: 8.52356 degree[16], 8.520564610667583 degree[17]
- Orbital period: 3.72 years[18], 1359.30845909556 day[19]
- Longitude of ascending node: 300.83658 degree[20], 300.8032138917182 degree[21]
- Semi-major axis of an orbit: 2.4019923 astronomical unit[22], 2.401484171318822 astronomical unit[23]
- Apoapsis: 2.888 astronomical unit[24], 2.887806992449288 astronomical unit[25]
- Periapsis: 1.9159120 astronomical unit[26], 1.915161350188356 astronomical unit[27]
- Argument of periapsis: 345.09721 degree[28], 344.857703352676 degree[29]
- Mean anomaly: 166.40435 degree[30], 29.34232812911623 degree[31]
- Diameter: 8.895 km[32]
- Albedo: 0.034[33], 0.059[34]
- Epoch: May 5, 2025[35]
- Time of periapsis: 2460689.7075699014 Julian day[36]