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(2017 HG4)
Classification: Aten [NEO]          SPK-ID: 3774114
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1866910876160209 5.4971e-05  
a .8623024459477412 3.6026e-05 au
q .7013182644598024 7.6702e-05 au
i 2.983567338035689 0.0010788 deg
node 210.7423359670376 0.00036016 deg
peri 204.8059313055138 0.0016138 deg
M 349.5027156123778 0.10191 deg
tp 2459209.028296996155
(2020-Dec-25.52829700)		 0.083329 TDB
period 292.4743967340596
0.80		 0.018329
5.018e-05		 d
yr
n 1.230876972548609 7.7137e-05 deg/d
Q 1.02328662743568 4.2752e-05 au
   Orbit Determination Parameters
   # obs. used (total)      34  
   data-arc span      31 days  
   first obs. used      2017-04-26  
   last obs. used      2017-05-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .52539  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 19:01:09  

Additional Information
 Earth MOID = .00219228 au 
 Jupiter MOID = 4.18597 au 
 T_jup = 6.833 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 27.7   n/a MPO411588  

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