(22311) 1991 EF2
minor planet
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Summary
(22311) 1991 EF2 is an asteroid[1]. (22311) 1991 EF2 has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[2]
Key Facts
- Discoverer or inventor: Henri Debehogne[3]
- Site of astronomical discovery: La Silla Observatory[4]
- Follows: (22310) 1990 WU1[5]
- Followed by: 22312 Kelly[6]
- Minor planet group: asteroid belt[7]
- Parent astronomical body: Sun[8]
- Provisional designation: 1991 EF2[9], 1998 KN47[10]
- Time of discovery or invention: March 10, 1991[11]
- Orbital eccentricity: 0.06[12], 0.0562715[13], 0.05715844472209843[14]
- Absolute magnitude: 14.2[15], 14.39[16]
- Orbital inclination: 5.42615 degree[17], 5.430238581269821 degree[18]
- Orbital period: 3.26 years[19], 1188.875256163123 day[20]
- Longitude of ascending node: 175.75276 degree[21], 175.7140070367533 degree[22]
- Semi-major axis of an orbit: 2.1967910 astronomical unit[23], 2.196301244158011 astronomical unit[24]
- Apoapsis: 2.320 astronomical unit[25], 2.321838407415293 astronomical unit[26]
- Periapsis: 2.0731743 astronomical unit[27], 2.07076408090073 astronomical unit[28]
- Argument of periapsis: 18.10554 degree[29], 18.81565717739262 degree[30]
- Mean anomaly: 203.85499 degree[31], 209.6439986170909 degree[32]
- Diameter: 3.583 km[33]
- Albedo: 0.315[34]
- Epoch: November 21, 2025[35]
- Time of periapsis: 2461497.040360166 Julian day[36]
Why It Matters
(22311) 1991 EF2 is known by 4 alternative names across languages and contexts.[37]