11789 Kempowski
asteroid
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Key Facts
- Discoverer or inventor: Hans-Emil Schuster[1]
- Site of astronomical discovery: European Southern Observatory[2], La Silla Observatory[3]
- Named after: Walter Kempowski[4]
- Follows: 11788 Nauchnyj[5]
- Followed by: 11790 Goode[6]
- Minor planet group: asteroid belt[7], inner asteroid belt[8]
- Parent astronomical body: Sun[9]
- Provisional designation: 1977 RK[10], 1990 HM[11]
- Time of discovery or invention: September 5, 1977[12]
- Significant event: naming[13]
- Orbital eccentricity: 0.05[14], 0.0497916[15], 0.04961922244754705[16]
- Absolute magnitude: 14.7[17], 14.92[18]
- Orbital inclination: 21.45062 degree[19], 21.44470750718168 degree[20]
- Orbital period: 2.73 years[21], 995.784047142302 day[22]
- Rotation period: 48.6 hour[23]
- Longitude of ascending node: 46.64201 degree[24], 46.59112312392296 degree[25]
- Semi-major axis of an orbit: 1.9516189 astronomical unit[26], 1.951541652527459 astronomical unit[27]
- Apoapsis: 2.049 astronomical unit[28], 2.048375631899872 astronomical unit[29]
- Periapsis: 1.8544447 astronomical unit[30], 1.854707673155045 astronomical unit[31]
- Argument of periapsis: 134.29130 degree[32], 134.5603788497796 degree[33]
- Mean anomaly: 257.54024 degree[34], 44.95851839526778 degree[35]
- Diameter: 2.235 km[36]
- Albedo: 0.615[37]
- Epoch: November 21, 2025[38]
- Time of periapsis: 2460876.141734997 Julian day[39]