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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1322780108382446 5.5124e-08  
a 2.620644408222937 2.8383e-08 au
q 2.273990778788839 1.4267e-07 au
i 14.28746885726836 5.6154e-06 deg
node 76.85900658864783 2.0499e-05 deg
peri 124.0066054459165 2.7307e-05 deg
M 238.914544924857 2.2796e-05 deg
tp 2459521.694769397427
(2021-Nov-03.19476940)
0.00010323 TDB
period 1549.567756644549
4.24
2.5174e-05
6.892e-08
d
yr
n .2323228516186655 3.7743e-09 deg/d
Q 2.967298037657036 3.2137e-08 au
  Orbit Determination Parameters
   # obs. used (total)      258  
   data-arc span      4392 days (12.02 yr)  
   first obs. used      2007-12-20  
   last obs. used      2019-12-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52386  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 00:43:03  

Additional Information
 Earth MOID = 1.29985 au 
 Jupiter MOID = 2.09364 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2172-Dec-06 17:47 00:35 Europ 0.0337029376781064 0.0335391023876663 0.0338668388606294 3.64691899738383 3.64691891091137 2514707.240746775 34.9892577515389 8495.71760374223 113.712881628345 16.0439573590577 12256.368238549 T 17 CATAB v2.0f-lin.ifort 2020-Feb-26 00:43:16 2020-Feb-26 00:43

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