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308485 (2005 TR81)
Classification: Main-belt Asteroid          SPK-ID: 2308485
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1485158003271682 7.0275e-08  
a 3.13133580342243 4.4371e-08 au
q 2.666282960484031 2.1143e-07 au
i 4.36410254970116 8.196e-06 deg
node 226.5635151130091 9.4874e-05 deg
peri 201.032857283224 9.8803e-05 deg
M 196.523288755505 2.8845e-05 deg
tp 2459919.565119158883
(2022-Dec-06.06511916)
0.00017198 TDB
period 2023.917904748892
5.54
4.3019e-05
1.178e-07
d
yr
n .1778728273292614 3.7807e-09 deg/d
Q 3.596388646360829 5.0961e-08 au
  Orbit Determination Parameters
   # obs. used (total)      125  
   data-arc span      4946 days (13.54 yr)  
   first obs. used      2005-09-23  
   last obs. used      2019-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62336  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:17:28  

Additional Information
 Earth MOID = 1.68076 au 
 Jupiter MOID = 1.71364 au 
 T_jup = 3.192 
[ 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 16.6   n/a MPO433984  

308485 (2005 TR81)          Discovered 2005-Oct-03 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

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