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442217 (2011 HR25)
Classification: Main-belt Asteroid          SPK-ID: 2442217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03540899708346052 7.1542e-08  
a 2.246771154716189 3.0112e-08 au
q 2.167215241451641 1.7282e-07 au
i 6.398569744972591 5.9517e-06 deg
node 99.1310800505334 6.5056e-05 deg
peri 97.68112226168702 0.00015254 deg
M 272.0189467702667 0.00015046 deg
tp 2459301.123787471379
(2021-Mar-27.62378747)
0.00051885 TDB
period 1230.089428539846
3.37
2.4729e-05
6.77e-08
d
yr
n .2926616485334169 5.8835e-09 deg/d
Q 2.326327067980738 3.1178e-08 au
  Orbit Determination Parameters
   # obs. used (total)      87  
   data-arc span      4729 days (12.95 yr)  
   first obs. used      2006-12-14  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62108  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 02:10:54  

Additional Information
 Earth MOID = 1.174 au 
 Jupiter MOID = 2.64566 au 
 T_jup = 3.621 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.9   n/a MPO503571  

442217 (2011 HR25)          Discovered 2006-Dec-14 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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