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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .197780287913065 6.4522e-08  
a 3.028336053088184 4.2777e-08 au
q 2.429390876610888 2.0755e-07 au
i 20.32944411120107 6.9562e-06 deg
node 206.310494373186 1.9374e-05 deg
peri 281.6133290848697 2.7875e-05 deg
M 97.65524222115209 1.6273e-05 deg
tp 2458478.347227767350
(2018-Dec-25.84722777)
8.8771e-05 TDB
period 1924.883843696397
5.27
4.0785e-05
1.117e-07
d
yr
n .1870242722328034 3.9628e-09 deg/d
Q 3.62728122956548 5.1238e-08 au
  Orbit Determination Parameters
   # obs. used (total)      150  
   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      .60086  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:42:42  

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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