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312485 (2008 UJ90)
Classification: Inner Main-belt Asteroid          SPK-ID: 2312485
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07118491567327882 4.5132e-08  
a 1.913625818773473 9.6556e-09 au
q 1.777404526233874 8.8295e-08 au
i 24.20541872928906 6.0391e-06 deg
node 55.71187736596816 1.0847e-05 deg
peri 105.8231302400831 6.4465e-05 deg
M 20.24154078318986 5.6897e-05 deg
tp 2458946.134294679297
(2020-Apr-06.63429468)
0.00015293 TDB
period 966.9053420926782
2.65
7.3181e-06
2.004e-08
d
yr
n .3723218647451571 2.8179e-09 deg/d
Q 2.049847111313072 1.0343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      450  
   data-arc span      7155 days (19.59 yr)  
   first obs. used      2000-09-26  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:27:12  

Additional Information
 Earth MOID = .841334 au 
 Jupiter MOID = 3.00938 au 
 T_jup = 3.823 
[ 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 17.1   n/a MPO402213  

312485 (2008 UJ90)          Discovered 2008-Oct-27 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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