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20081 Occhialini (1994 EE3)
Classification: Main-belt Asteroid          SPK-ID: 2020081
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0884902469154699 2.9464e-08  
a 2.45373912786574 9.0803e-09 au
q 2.236607146574751 7.4145e-08 au
i 7.640703648845955 3.0451e-06 deg
node 135.6213269030056 2.8159e-05 deg
peri 6.463012022315714 3.6413e-05 deg
M 27.6563081262777 2.2721e-05 deg
tp 2459092.646879815047
(2020-Aug-31.14687982)
8.8543e-05 TDB
period 1403.915630723369
3.84
7.793e-06
2.134e-08
d
yr
n .2564256655611916 1.4234e-09 deg/d
Q 2.670871109156729 9.8838e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1757  
   data-arc span      13215 days (36.18 yr)  
   first obs. used      1984-11-13  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48028  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:46:05  

Additional Information
 Earth MOID = 1.24952 au 
 Jupiter MOID = 2.33464 au 
 T_jup = 3.476 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457165.5 (2015-May-23.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08798227915670698 2.9722e-08  
q 2.238039515879383 7.4763e-08 au
tp 2457690.839629633300
(2016-Oct-29.33962963)
8.8291e-05 TDB
node 135.6763781975987 2.8148e-05 deg
peri 6.966766741178569 3.6416e-05 deg
i 7.641702064843493 3.046e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1757  
   data-arc span      13215 days (36.18 yr)  
   first obs. used      1984-11-13  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48028  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:46:05  

Additional Information
 Jupiter MOID = 2.33464 au 
 T_jup = 3.476 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.833921285978586E-16 -2.208926626974682E-15 8.623402727483007E-13 7.812925139570065E-15 2.480412896950519E-13 2.056765406420647E-16
q -2.208926626974682E-15 5.589524828917788E-15 -2.115005173034898E-12 -1.827658426038306E-14 -6.173861939598092E-13 -2.977767734585463E-16
tp 8.623402727483007E-13 -2.115005173034898E-12 7.795297626977631E-9 3.691715372998247E-11 2.054023467443575E-9 6.040212206025935E-12
node 7.812925139570065E-15 -1.827658426038306E-14 3.691715372998247E-11 7.923257510405458E-10 -7.75178686564032E-10 1.441208184080553E-11
peri 2.480412896950519E-13 -6.173861939598092E-13 2.054023467443575E-9 -7.75178686564032E-10 1.326107482385644E-9 -1.269000300249912E-11
i 2.056765406420647E-16 -2.977767734585463E-16 6.040212206025935E-12 1.441208184080553E-11 -1.269000300249912E-11 9.278099228278264E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.27   n/a E2021B10  

20081 Occhialini           Discovered 1994 Mar. 12 by V. Goretti and M. Tombelli at Cima Ekar.
Giuseppe Occhialini (b. 1907) is a distinguished Italian physicist. He collaborated with P. M. S. Blackett at the Cavendish Laboratory of Cambridge on very important research work in cosmic radiation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010705/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1994 EE3 = 1998 HA121 = 1999 RZ129 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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