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392481 (2011 HC22)
Classification: Main-belt Asteroid          SPK-ID: 2392481
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1041556340762782 1.064e-07  
a 2.240034568279065 3.74e-08 au
q 2.006722347467177 2.6607e-07 au
i 3.787147382736401 5.5789e-06 deg
node 114.9304202399453 0.00014197 deg
peri 37.62007054578268 0.00014839 deg
M 312.3262668397479 5.1655e-05 deg
tp 2459162.665015555176
(2020-Nov-09.16501555)
0.00017846 TDB
period 1224.561235924716
3.35
3.0668e-05
8.396e-08
d
yr
n .2939828482551544 7.3626e-09 deg/d
Q 2.473346789090953 4.1296e-08 au
  Orbit Determination Parameters
   # obs. used (total)      88  
   data-arc span      6740 days (18.45 yr)  
   first obs. used      2001-05-16  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61684  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 13:05:01  

Additional Information
 Earth MOID = 1.01892 au 
 Jupiter MOID = 2.51449 au 
 T_jup = 3.625 
[ 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 18.1   n/a MPO494989  

392481 (2011 HC22)          Discovered 2009-Oct-27 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

Alternate Designations
 2011 HC22 = 2009 UG156 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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