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129971 (1999 UM22)
Classification: Main-belt Asteroid          SPK-ID: 2129971
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1778327189621745 3.628e-08  
a 2.526058298361698 1.5147e-08 au
q 2.076842482907073 8.9254e-08 au
i 13.22250647297496 1.1168e-05 deg
node 212.9786684495288 1.75e-05 deg
peri 93.08885737034842 3.9404e-05 deg
M 114.5668846469366 3.501e-05 deg
tp 2458533.819038664674
(2019-Feb-19.31903866)
0.00014151 TDB
period 1466.43723968285
4.01
1.319e-05
3.611e-08
d
yr
n .2454929472998504 2.2081e-09 deg/d
Q 2.975274113816322 1.7841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      313  
   data-arc span      7354 days (20.13 yr)  
   first obs. used      1999-10-06  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6295  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 11:53:08  

Additional Information
 Earth MOID = 1.11315 au 
 Jupiter MOID = 2.3791 au 
 T_jup = 3.395 
[ 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 16.8   n/a MPO439821  

129971 (1999 UM22)          Discovered 1999-Oct-31 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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