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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04854150245131981 7.9913e-08  
a 3.052290182598248 3.9977e-08 au
q 2.904127431217516 2.4862e-07 au
i 2.914289840301989 7.3404e-06 deg
node 94.24082666389808 0.00016991 deg
peri 146.7081343381142 0.00018561 deg
M 354.2474341380744 7.4188e-05 deg
tp 2459031.624060833589
(2020-Jul-01.12406083)
0.00040135 TDB
period 1947.767686460081
5.33
3.8266e-05
1.048e-07
d
yr
n .1848269701271575 3.6311e-09 deg/d
Q 3.200452933978981 4.1918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      8950 days (24.50 yr)  
   first obs. used      1995-10-20  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65107  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:02:01  

Additional Information
 Earth MOID = 1.89178 au 
 Jupiter MOID = 1.78953 au 
 T_jup = 3.233 
[ 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 16.6   n/a MPO433971  

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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