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276770 (2004 HC)
Classification: Aten [NEO]          SPK-ID: 2276770
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5986666480396077 3.7794e-07  
a .7891675188264408 2.7303e-09 au
q .3167192455888815 2.9768e-07 au
i 28.98140007597747 6.497e-05 deg
node 202.9878038386237 1.3361e-05 deg
peri 159.3574843204401 2.177e-05 deg
M 158.6277491955236 5.6998e-05 deg
tp 2459087.668882121544
(2020-Aug-26.16888212)		 4.0474e-05 TDB
period 256.0661841464907
0.70		 1.3289e-06
3.638e-09		 d
yr
n 1.405886533592622 7.2959e-09 deg/d
Q 1.261615792064 4.3648e-09 au
   Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      5135 days (14.06 yr)  
   first obs. used      2004-04-16  
   last obs. used      2018-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44628  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-09 06:38:31  

Additional Information
 Earth MOID = .0923798 au 
 Jupiter MOID = 4.22711 au 
 T_jup = 7.139 
[ 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 19.9   n/a MPO450165  

276770 (2004 HC)          Discovered 2004-Apr-16 by LINEAR at Socorro
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

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