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JPL Small-Body Database Browser
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392137 (2009 HW)
Classification: Main-belt Asteroid          SPK-ID: 2392137
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1977802987753977 6.517e-08  
a 3.028336014025361 4.2788e-08 au
q 2.429390812379128 2.0929e-07 au
i 20.3294405979659 6.9577e-06 deg
node 206.3104978710118 1.9572e-05 deg
peri 281.6133419299254 2.8037e-05 deg
M 97.65523223476418 1.6286e-05 deg
tp 2458478.347291266517
(2018-Dec-25.84729127)
8.885e-05 TDB
period 1924.883806452481
5.27
4.0796e-05
1.117e-07
d
yr
n .1870242758514719 3.9638e-09 deg/d
Q 3.627281215671594 5.1251e-08 au
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      4177 days (11.44 yr)  
   first obs. used      2007-11-15  
   last obs. used      2019-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62719  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:09:21  

Additional Information
 Earth MOID = 1.5351 au 
 Jupiter MOID = 1.79554 au 
 T_jup = 3.121 
[ 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 15.9   n/a MPO427953  

392137 (2009 HW)          Discovered 2009-Apr-16 by CSS at Catalina
Reference: Last Updated: 2014-04-17

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