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469221 (2016 HJ7)
Classification: Main-belt Asteroid          SPK-ID: 2469221
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .092221702693408 4.384e-08  
a 2.572536519083974 2.9551e-08 au
q 2.335292821053077 1.1455e-07 au
i 4.794590991689414 8.3269e-06 deg
node 158.0113462093357 9.0606e-05 deg
peri 121.1270521988494 0.00010965 deg
M 307.4710748922174 6.0582e-05 deg
tp 2459220.405840007167
(2021-Jan-05.90584001)
0.00025345 TDB
period 1507.095419145572
4.13
2.5968e-05
7.11e-08
d
yr
n .2388700777845223 4.1159e-09 deg/d
Q 2.80978021711487 3.2276e-08 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      6254 days (17.12 yr)  
   first obs. used      2003-03-12  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61198  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 04:46:38  

Additional Information
 Earth MOID = 1.32334 au 
 Jupiter MOID = 2.29363 au 
 T_jup = 3.418 
[ 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 17.2   n/a MPO380669  

469221 (2016 HJ7)          Discovered 2007-Jan-27 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-06-21

Alternate Designations
 2016 HJ7 = 2012 JJ33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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