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72824 (2001 HG4)
Classification: Main-belt Asteroid          SPK-ID: 2072824
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .245784159201594 5.9396e-08  
a 3.059613460071917 1.7529e-08 au
q 2.307608938306261 1.8272e-07 au
i 13.11575383784461 6.4206e-06 deg
node 229.2284320162197 1.8576e-05 deg
peri 338.0933498725047 2.0156e-05 deg
M 289.861796742109 9.422e-06 deg
tp 2459777.346883999021
(2022-Jul-16.84688400)
5.2948e-05 TDB
period 1954.78172908888
5.35
1.6799e-05
4.599e-08
d
yr
n .1841637839370411 1.5826e-09 deg/d
Q 3.811617981837572 2.1837e-08 au
  Orbit Determination Parameters
   # obs. used (total)      730  
   data-arc span      8066 days (22.08 yr)  
   first obs. used      1998-12-15  
   last obs. used      2021-01-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53539  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:04:16  

Additional Information
 Earth MOID = 1.30819 au 
 Jupiter MOID = 1.21544 au 
 T_jup = 3.148 
[ 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 14.64   n/a MPCxxxxx  

72824 (2001 HG4)          Discovered 2001-Apr-19 by Broughton, J. at Reedy Creek
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HG4 = 2002 RH127 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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