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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1394752032559315 3.9623e-08  
a 2.442124128082164 1.2273e-08 au
q 2.10150836894169 9.988e-08 au
i 7.078189298205404 3.8231e-06 deg
node 123.4666241943585 4.0958e-05 deg
peri 191.0735239905673 4.4676e-05 deg
M 24.76065811737183 1.9538e-05 deg
tp 2458904.624043107741
(2020-Feb-25.12404311)
7.5473e-05 TDB
period 1393.959090974149
3.82
1.0508e-05
2.877e-08
d
yr
n .2582572202663559 1.9468e-09 deg/d
Q 2.782739887222638 1.3985e-08 au
  Orbit Determination Parameters
   # obs. used (total)      863  
   data-arc span      7497 days (20.53 yr)  
   first obs. used      1999-01-17  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58859  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 11:50:10  

Additional Information
 Earth MOID = 1.08797 au 
 Jupiter MOID = 2.47997 au 
 T_jup = 3.477 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456897.5 (2014-Aug-28.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1390313633477315 3.9587e-08  
q 2.103526960321243 9.9773e-08 au
tp 2457512.044505535945
(2016-May-03.54450554)
7.4215e-05 TDB
node 123.5009558983529 4.0975e-05 deg
peri 191.3885970481778 4.4738e-05 deg
i 7.075618706612506 3.8216e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      863  
   data-arc span      7497 days (20.53 yr)  
   first obs. used      1999-01-17  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58859  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 11:50:10  

Additional Information
 Jupiter MOID = 2.47997 au 
 T_jup = 3.477 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.567106821236306E-15 -3.928989013536255E-15 3.236225750810632E-13 1.405118592089737E-14 1.35140452530779E-13 1.393653836504368E-15
q -3.928989013536255E-15 9.954709291705281E-15 -7.257017602773954E-13 -3.480227678120276E-14 -3.299782521867124E-13 -3.087361814853543E-15
tp 3.236225750810632E-13 -7.257017602773954E-13 5.507908960590138E-9 1.036842792711449E-11 1.35902489959794E-9 8.141271918146757E-12
node 1.405118592089737E-14 -3.480227678120276E-14 1.036842792711449E-11 1.678983109260747E-9 -1.662910834576429E-9 1.356323017702175E-11
peri 1.35140452530779E-13 -3.299782521867124E-13 1.35902489959794E-9 -1.662910834576429E-9 2.001475533894805E-9 -1.147550336704604E-11
i 1.393653836504368E-15 -3.087361814853543E-15 8.141271918146757E-12 1.356323017702175E-11 -1.147550336704604E-11 1.460481920616314E-11

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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