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441449 (2008 JJ9)
Classification: Main-belt Asteroid          SPK-ID: 2441449
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06973692775388375 6.947e-08  
a 3.193076073530606 7.8935e-08 au
q 2.970400758078148 2.1171e-07 au
i 13.29402139410562 6.6229e-06 deg
node 102.6549952091892 2.973e-05 deg
peri 245.0832543329928 6.3272e-05 deg
M 284.812000161351 6.1398e-05 deg
tp 2459435.769619931092
(2021-Aug-09.26961993)
0.00036515 TDB
period 2084.070111074371
5.71
7.7279e-05
2.116e-07
d
yr
n .1727389103116182 6.4053e-09 deg/d
Q 3.415751388983065 8.4439e-08 au
  Orbit Determination Parameters
   # obs. used (total)      145  
   data-arc span      4051 days (11.09 yr)  
   first obs. used      2008-04-28  
   last obs. used      2019-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61507  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:08  

Additional Information
 Earth MOID = 1.99055 au 
 Jupiter MOID = 1.91738 au 
 T_jup = 3.151 
[ 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 15.6   n/a MPO434638  

441449 (2008 JJ9)          Discovered 2008-Apr-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2008 JJ9 = 2013 FW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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