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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09201198744205266 5.6075e-08  
a 2.573103664897718 3.8929e-08 au
q 2.33634728279605 1.3277e-07 au
i 4.7939743325994 8.5771e-06 deg
node 158.0118918125484 9.1945e-05 deg
peri 120.9869217508861 0.00011186 deg
M 212.0626218435699 6.1601e-05 deg
tp 2459220.026330034502
(2021-Jan-05.52633003)
0.00025605 TDB
period 1507.593831875185
4.13
3.4213e-05
9.367e-08
d
yr
n .2387911069868351 5.4191e-09 deg/d
Q 2.809860046999387 4.2511e-08 au
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      5756 days (15.76 yr)  
   first obs. used      2003-03-12  
   last obs. used      2018-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63077  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-15 06:59:03  

Additional Information
 Earth MOID = 1.32384 au 
 Jupiter MOID = 2.29283 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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