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56516 (2000 HE20)
Classification: Main-belt Asteroid          SPK-ID: 2056516
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1394751837884471 3.1042e-08  
a 2.442124132907572 1.0065e-08 au
q 2.101508420636086 7.4814e-08 au
i 7.078185776583583 3.2588e-06 deg
node 123.4666266180494 4.0731e-05 deg
peri 191.0735205759632 4.4399e-05 deg
M 24.76065621589288 1.8665e-05 deg
tp 2458904.624050186311
(2020-Feb-25.12405019)
7.221e-05 TDB
period 1393.959095105647
3.82
8.6176e-06
2.359e-08
d
yr
n .2582572195009179 1.5966e-09 deg/d
Q 2.782739845179058 1.1469e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1090  
   data-arc span      7951 days (21.77 yr)  
   first obs. used      1999-01-17  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54363  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:58:58  

Additional Information
 Earth MOID = 1.08797 au 
 Jupiter MOID = 2.47997 au 
 T_jup = 3.477 
[ 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 15.3   n/a MPO436178  

56516 (2000 HE20)          Discovered 2000-Apr-27 by Spacewatch at Kitt Peak
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

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