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(2008 HJ)
Classification: Apollo [NEO]          SPK-ID: 3409625
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4065844924837473 0.00011264  
a 1.63206312450463 0.00029108 au
q .968491567326476 1.1112e-05 au
i .9255749671762096 0.00015626 deg
node 47.47440976965342 0.0012098 deg
peri 204.1149250602501 0.00094676 deg
M 332.4720015911276 0.3809 deg
tp 2457658.733915107645
(2016-Sep-27.23391511)
0.82136 JED
period 761.5595266815887
2.09
0.20374
0.0005578
d
yr
n .472714196838506 0.00012646 deg/d
Q 2.295634681682784 0.00040942 au
  Orbit Determination Parameters
   # obs. used (total)      78  
   data-arc span      6 days  
   first obs. used      2008-04-24  
   last obs. used      2008-04-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      6  
   fit RMS      .45234  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 09:21:13  

Additional Information
 Earth MOID = .00169484 au 
 Jupiter MOID = 2.75207 au 
 T_jup = 4.211 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.8 mag n/a MPO139312  
rotation period rot_per 0.01185 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Incomplete or inconclusive result.
Published Reference List:
[Miles, R. (2008) CBET 1382.]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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