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22885 Sakaemura (1999 RS239)
Classification: Main-belt Asteroid          SPK-ID: 2022885
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05814133435140908 3.3338e-08  
a 2.271664138566472 7.5615e-09 au
q 2.139586554351973 7.5914e-08 au
i 6.913435451885703 3.6275e-06 deg
node 145.6270824102081 3.1853e-05 deg
peri 304.9464849910659 4.6424e-05 deg
M 356.8580592181741 3.3905e-05 deg
tp 2459211.414657310971
(2020-Dec-27.91465731)
0.00011779 TDB
period 1250.58901640603
3.42
6.2441e-06
1.71e-08
d
yr
n .2878643545379727 1.4373e-09 deg/d
Q 2.403741722780971 8.0011e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1511  
   data-arc span      9846 days (26.96 yr)  
   first obs. used      1994-03-05  
   last obs. used      2021-02-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46148  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:14:20  

Additional Information
 Earth MOID = 1.16435 au 
 Jupiter MOID = 2.67814 au 
 T_jup = 3.600 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO439256  

22885 Sakaemura           Discovered 1999 Sept. 8 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Sakaemura is a small mountainside village in Nagano prefecture, Japan. Adjacent to Niigata prefecture, Sakaemura is renowned for its heavy snowfalls. The village was heavily damaged during the 2011 earthquake.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

Alternate Designations
 1999 RS239 = 1999 SO21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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