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390808 (2004 HK52)
Classification: Mars-crossing Asteroid          SPK-ID: 2390808
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2593699072104745 1.0459e-07  
a 1.863869279500339 1.8385e-08 au
q 1.380437677423882 2.0531e-07 au
i 9.25615045543463 8.8107e-06 deg
node 77.08347011568141 5.6434e-05 deg
peri 128.7608887122603 7.3767e-05 deg
M 125.6776262976505 5.643e-05 deg
tp 2458676.028115567162
(2019-Jul-11.52811557)
0.00014116 TDB
period 929.4405204564661
2.54
1.3752e-05
3.765e-08
d
yr
n .3873297882721932 5.7309e-09 deg/d
Q 2.347300881576796 2.3154e-08 au
  Orbit Determination Parameters
   # obs. used (total)      92  
   data-arc span      5376 days (14.72 yr)  
   first obs. used      2004-04-16  
   last obs. used      2019-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52473  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 18:26:36  

Additional Information
 Earth MOID = .398191 au 
 Jupiter MOID = 2.63724 au 
 T_jup = 3.933 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.9   n/a MPO297769  

390808 (2004 HK52)          Discovered 2004-Apr-24 by LINEAR at Socorro
Reference: Last Updated: 2014-04-17

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