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JPL Small-Body Database Browser
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441436 (2008 HG9)
Classification: Main-belt Asteroid          SPK-ID: 2441436
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718091514909318 9.7295e-08  
a 3.138502897726052 3.7756e-08 au
q 2.599279377915908 2.9763e-07 au
i 10.67376527849014 7.8606e-06 deg
node 120.0443928653586 5.5758e-05 deg
peri 87.02456788040325 6.2069e-05 deg
M 358.778429142598 2.3249e-05 deg
tp 2458607.391256107758
(2019-May-03.89125611)
0.00013114 TDB
period 2030.870484311552
5.56
3.6647e-05
1.003e-07
d
yr
n .1772638889486037 3.1987e-09 deg/d
Q 3.677726417536196 4.4243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      4551 days (12.46 yr)  
   first obs. used      2006-12-13  
   last obs. used      2019-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58433  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:07  

Additional Information
 Earth MOID = 1.62316 au 
 Jupiter MOID = 1.45676 au 
 T_jup = 3.162 
[ 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 16.2   n/a MPO434638  

441436 (2008 HG9)          Discovered 2008-Apr-24 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

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