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JPL Small-Body Database Browser
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392161 (2009 HM99)
Classification: Main-belt Asteroid          SPK-ID: 2392161
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09883821162639352 5.4243e-08  
a 2.980041553914857 4.9531e-08 au
q 2.685499576153573 1.7912e-07 au
i 10.57191219685629 9.8435e-06 deg
node 51.29825302753198 3.2196e-05 deg
peri 254.6282017508823 6.1916e-05 deg
M 271.1330778452441 5.6259e-05 deg
tp 2459064.341438592468
(2020-Aug-02.84143859)
0.00029854 TDB
period 1879.022181082167
5.14
4.6847e-05
1.283e-07
d
yr
n .1915890102971901 4.7766e-09 deg/d
Q 3.27458353167614 5.4427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      163  
   data-arc span      5022 days (13.75 yr)  
   first obs. used      2005-08-27  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60405  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:08:36  

Additional Information
 Earth MOID = 1.69433 au 
 Jupiter MOID = 1.95483 au 
 T_jup = 3.227 
[ 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 16.0   n/a MPO437605  

392161 (2009 HM99)          Discovered 2009-Apr-21 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2009 HM99 = 2011 UU279 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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