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312447 (2008 JN22)
Classification: Main-belt Asteroid          SPK-ID: 2312447
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 .2015940211626577 5.4118e-08  
a 2.629251936607035 2.8037e-08 au
q 2.099210466056717 1.4687e-07 au
i 11.74098421602352 9.9353e-06 deg
node 296.8653323695929 2.4461e-05 deg
peri 257.6824856366417 3.763e-05 deg
M 311.8330273355216 3.0387e-05 deg
tp 2459208.850036659674
(2020-Dec-25.35003666)
0.00013372 TDB
period 1557.208374293307
4.26
2.4908e-05
6.819e-08
d
yr
n .2311829334743819 3.6978e-09 deg/d
Q 3.159293407157352 3.3689e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      8614 days (23.58 yr)  
   first obs. used      1996-06-23  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55891  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:46:12  

Additional Information
 Earth MOID = 1.13631 au 
 Jupiter MOID = 1.99349 au 
 T_jup = 3.342 
[ 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 16.1   n/a MPO413277  

312447 (2008 JN22)          Discovered 2008-May-06 by Siding Spring Survey at Siding Spring
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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