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201071 (2002 EP122)
Classification: Main-belt Asteroid          SPK-ID: 2201071
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1262549141621067 6.192e-08  
a 2.537521254430685 2.1438e-08 au
q 2.217146726268018 1.4784e-07 au
i 1.199390377876842 5.71e-06 deg
node 233.2112741949113 0.00026501 deg
peri 76.53722129338948 0.00026598 deg
M 153.0589493211573 2.6863e-05 deg
tp 2458768.775344821977
(2019-Oct-12.27534482)
0.00010669 TDB
period 1476.430335281618
4.04
1.871e-05
5.123e-08
d
yr
n .2438313487587158 3.09e-09 deg/d
Q 2.857895782593353 2.4144e-08 au
  Orbit Determination Parameters
   # obs. used (total)      228  
   data-arc span      6905 days (18.90 yr)  
   first obs. used      2002-02-20  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:51:42  

Additional Information
 Earth MOID = 1.2024 au 
 Jupiter MOID = 2.3689 au 
 T_jup = 3.436 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457427.5 (2016-Feb-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127031378439854 6.1663e-08  
q 2.21485824914319 1.4727e-07 au
tp 2457294.483246095068
(2015-Sep-28.98324610)
0.00010033 TDB
node 233.2324032063889 0.00026507 deg
peri 76.89714262625425 0.00026603 deg
i 1.198902304422772 5.7116e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      228  
   data-arc span      6905 days (18.90 yr)  
   first obs. used      2002-02-20  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:51:42  

Additional Information
 Jupiter MOID = 2.3689 au 
 T_jup = 3.436 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.802272338470533E-15 -9.02875988484037E-15 2.767170719404192E-13 4.54765152123873E-14 -2.737073450363951E-14 8.348960487992273E-16
q -9.02875988484037E-15 2.168709594994919E-14 -2.553577799470741E-13 -1.10271453911846E-13 1.604281727173055E-13 -1.810542762207423E-15
tp 2.767170719404192E-13 -2.553577799470741E-13 1.006547329643661E-8 2.325453673686253E-11 2.297289887328861E-9 1.619497382299681E-12
node 4.54765152123873E-14 -1.10271453911846E-13 2.325453673686253E-11 7.026031008694202E-8 -7.023996948638381E-8 1.7820592004097E-10
peri -2.737073450363951E-14 1.604281727173055E-13 2.297289887328861E-9 -7.023996948638381E-8 7.077128124382845E-8 -1.778007483974559E-10
i 8.348960487992273E-16 -1.810542762207423E-15 1.619497382299681E-12 1.7820592004097E-10 -1.778007483974559E-10 3.262205971817966E-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 16.70   n/a MPCxxxxx  

201071 (2002 EP122)          Discovered 2002-Mar-12 by NEAT at Palomar
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

[ show close-approach data ]
Alternate Designations
 2002 EP122 = 2006 DD53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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