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102181 (1999 RT240)
Classification: Main-belt Asteroid          SPK-ID: 2102181
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090016212186403 5.3835e-08  
a 2.584168601652816 1.2895e-08 au
q 2.04407317440507 1.3648e-07 au
i 14.61141253862739 6.3606e-06 deg
node 47.27374755682861 1.4522e-05 deg
peri 309.7602713158366 2.0262e-05 deg
M 44.6805737897792 1.3783e-05 deg
tp 2459012.180220980674
(2020-Jun-11.68022098)
5.7986e-05 TDB
period 1517.328778406731
4.15
1.1357e-05
3.109e-08
d
yr
n .2372590602137116 1.7759e-09 deg/d
Q 3.124264028900561 1.559e-08 au
  Orbit Determination Parameters
   # obs. used (total)      636  
   data-arc span      7799 days (21.35 yr)  
   first obs. used      1999-09-11  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48047  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:30:46  

Additional Information
 Earth MOID = 1.07287 au 
 Jupiter MOID = 2.42104 au 
 T_jup = 3.347 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.34   n/a E2021B55  

102181 (1999 RT240)          Discovered 1999-Sep-11 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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