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216938 (1999 RU204)
Classification: Main-belt Asteroid          SPK-ID: 2216938
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1835576981876276 5.5132e-08  
a 2.975006116679019 2.0418e-08 au
q 2.428920841807306 1.6778e-07 au
i 11.03608671747941 7.8546e-06 deg
node 283.1559944592567 2.8455e-05 deg
peri 81.68324028989834 3.5959e-05 deg
M 52.68568676466202 2.1664e-05 deg
tp 2458926.203436835609
(2020-Mar-17.70343684)
0.00011191 TDB
period 1874.261660102595
5.13
1.9295e-05
5.283e-08
d
yr
n .1920756357894521 1.9773e-09 deg/d
Q 3.521091391550733 2.4166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      408  
   data-arc span      7828 days (21.43 yr)  
   first obs. used      1999-09-08  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51721  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:52  

Additional Information
 Earth MOID = 1.45539 au 
 Jupiter MOID = 2.1104 au 
 T_jup = 3.208 
[ 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 15.47   n/a MPCxxxxx  

216938 (1999 RU204)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20090806/Numbers.arcLast Updated: 2009-08-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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