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181902 (1999 RD215)
Classification: TransNeptunian Object          SPK-ID: 2181902
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6972590873552967 0.00032733  
a 123.9518503371043 0.14411 au
q 37.52529629505463 0.0031886 au
i 25.92090523491999 0.00023865 deg
node 210.2860771787051 0.00013988 deg
peri 138.0106447441919 0.0094003 deg
M 8.339647759737449 0.015632 deg
tp 2447523.718455430677
(1988-Dec-28.21845543)
1.6184 TDB
period 504055.0245226779
1380.03
879.02
2.407
d
yr
n .0007142077401984181 1.2455e-06 deg/d
Q 210.378404379154 0.24459 au
  Orbit Determination Parameters
   # obs. used (total)      25  
   data-arc span      6642 days (18.18 yr)  
   first obs. used      1999-09-06  
   last obs. used      2017-11-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .16912  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:31  

Additional Information
 Earth MOID = 36.5631 au 
 Jupiter MOID = 32.8325 au 
 T_jup = 6.335 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.4   n/a MPO136118  

181902 (1999 RD215)          Discovered 1999-Sep-06 by Trujillo, C. A., Luu, J. X., Jewitt, D. C. at Mauna Kea
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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