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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1393846717195742 2.9146e-08  
a 2.442113995982759 9.6339e-09 au
q 2.101720738350924 6.9317e-08 au
i 7.07819474966735 2.9172e-06 deg
node 123.466974087961 3.9807e-05 deg
peri 191.1029892167927 4.36e-05 deg
M 76.39499014595837 1.8606e-05 deg
tp 2458904.692143645477
(2020-Feb-25.19214365)
7.1883e-05 TDB
period 1393.950415913001
3.82
8.2485e-06
2.258e-08
d
yr
n .2582588274951009 1.5282e-09 deg/d
Q 2.782507253614593 1.0977e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1184  
   data-arc span      8051 days (22.04 yr)  
   first obs. used      1999-01-17  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52938  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:18:06  

Additional Information
 Earth MOID = 1.0862 au 
 Jupiter MOID = 2.47976 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 15.39   n/a E2021B10  

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

[ 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
2086-Jul-14 13:03 00:08 Europ 0.0496305212593452 0.0496232161458411 0.0496378271309235 2.63643942562214 2.63643934439426 2483151.043984884 8.35281295058688 477.959483101628 60.397284318523 -40.8071843271644 81067.3871508757 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 11:18:09 2021-Apr-13 11:18
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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