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305972 (2009 HG76)
Classification: Main-belt Asteroid          SPK-ID: 2305972
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04910186430640252 7.9295e-08  
a 3.054163943300396 3.6924e-08 au
q 2.904198799786953 2.4444e-07 au
i 2.9139562017341 7.0683e-06 deg
node 94.24245993647374 0.0001473 deg
peri 146.9418508354347 0.00016139 deg
M 30.96666015345157 6.2786e-05 deg
tp 2459032.801641126598
(2020-Jul-02.30164113)
0.000341 TDB
period 1949.561525048597
5.34
3.5354e-05
9.679e-08
d
yr
n .1846569063733581 3.3486e-09 deg/d
Q 3.204129086813839 3.8737e-08 au
  Orbit Determination Parameters
   # obs. used (total)      139  
   data-arc span      9014 days (24.68 yr)  
   first obs. used      1995-10-20  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62423  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:09:52  

Additional Information
 Earth MOID = 1.89032 au 
 Jupiter MOID = 1.78528 au 
 T_jup = 3.232 
[ 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 16.73   n/a E2021B25  

305972 (2009 HG76)          Discovered 2009-Apr-24 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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