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181891 (1999 RD106)
Classification: Main-belt Asteroid          SPK-ID: 2181891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1467698229963917 4.9482e-08  
a 2.202415286090564 1.0605e-08 au
q 1.879167184386505 1.1042e-07 au
i 5.04803447539494 4.4995e-06 deg
node 219.8814604039372 5.1329e-05 deg
peri 142.8524055223813 5.3605e-05 deg
M 231.8461766480384 1.8977e-05 deg
tp 2459821.487652746046
(2022-Aug-29.98765275)
6.5226e-05 TDB
period 1193.843078472888
3.27
8.6226e-06
2.361e-08
d
yr
n .3015471685445428 2.1779e-09 deg/d
Q 2.525663387794623 1.2161e-08 au
  Orbit Determination Parameters
   # obs. used (total)      465  
   data-arc span      11070 days (30.31 yr)  
   first obs. used      1991-02-19  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52754  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:38:46  

Additional Information
 Earth MOID = .879154 au 
 Jupiter MOID = 2.94457 au 
 T_jup = 3.645 
[ 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 16.51   n/a E2021B55  

181891 (1999 RD106)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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