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392141 (2009 HW15)
Classification: Main-belt Asteroid          SPK-ID: 2392141
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0534090224194849 5.4193e-08  
a 3.121908944627948 4.3549e-08 au
q 2.955170839812724 1.7601e-07 au
i 12.09341621888605 9.0377e-06 deg
node 156.0047636325416 2.7931e-05 deg
peri 267.7491258288722 8.5289e-05 deg
M 131.2776500998784 8.1425e-05 deg
tp 2458265.788109812132
(2018-May-27.28810981)
0.0004539 TDB
period 2014.78530630613
5.52
4.2158e-05
1.154e-07
d
yr
n .1786790874805501 3.7387e-09 deg/d
Q 3.288647049443173 4.5875e-08 au
  Orbit Determination Parameters
   # obs. used (total)      195  
   data-arc span      10279 days (28.14 yr)  
   first obs. used      1992-03-06  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60621  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:22:25  

Additional Information
 Earth MOID = 2.00012 au 
 Jupiter MOID = 1.89486 au 
 T_jup = 3.179 
[ 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 15.8   n/a MPO427953  

392141 (2009 HW15)          Discovered 2009-Jan-19 by Mt. Lemmon Survey at Mount Lemmon
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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