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JPL Small-Body Database Browser
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359284 (2009 HM20)
Classification: Main-belt Asteroid          SPK-ID: 2359284
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 .1326495668708479 5.5425e-08  
a 2.619803031177748 2.9552e-08 au
q 2.272287293805085 1.4344e-07 au
i 14.28821989360969 5.7918e-06 deg
node 76.85653657279764 2.096e-05 deg
peri 124.0306326930816 2.7919e-05 deg
M 145.9437316079485 2.2172e-05 deg
tp 2457972.608891655161
(2017-Aug-07.10889166)
9.0601e-05 TDB
period 1548.821566460696
4.24
2.6206e-05
7.175e-08
d
yr
n .2324347799615533 3.9328e-09 deg/d
Q 2.96731876855041 3.3472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      4331 days (11.86 yr)  
   first obs. used      2007-12-20  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53782  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 11:15:28  

Additional Information
 Earth MOID = 1.29833 au 
 Jupiter MOID = 2.09427 au 
 T_jup = 3.349 
[ 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 16.1   n/a MPO455593  

359284 (2009 HM20)          Discovered 2009-Apr-18 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 2009 HM20 = 2011 UL369 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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