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154138 (2002 EZ122)
Classification: Main-belt Asteroid          SPK-ID: 2154138
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379272384434273 5.0475e-08  
a 3.129157439122861 3.3657e-08 au
q 2.697561394889938 1.679e-07 au
i 3.841031930603934 6.0923e-06 deg
node 318.1888743045495 9.0422e-05 deg
peri 347.5934905511691 9.3625e-05 deg
M 343.0293305099583 2.6315e-05 deg
tp 2459095.809463196489
(2020-Sep-03.30946320)
0.00014839 TDB
period 2021.80631535307
5.54
3.2619e-05
8.931e-08
d
yr
n .1780585990192304 2.8727e-09 deg/d
Q 3.560753483355785 3.8299e-08 au
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      9361 days (25.63 yr)  
   first obs. used      1993-09-15  
   last obs. used      2019-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56761  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:30:16  

Additional Information
 Earth MOID = 1.68273 au 
 Jupiter MOID = 1.68568 au 
 T_jup = 3.196 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457044.5 (2015-Jan-22.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1367443823895254 5.0767e-08  
q 2.699284703408024 1.6816e-07 au
tp 2457082.449456706067
(2015-Feb-28.94945671)
0.0001396 TDB
node 318.2685346563174 9.0525e-05 deg
peri 348.5026887157168 9.3763e-05 deg
i 3.839077145244039 6.0908e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      9361 days (25.63 yr)  
   first obs. used      1993-09-15  
   last obs. used      2019-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56761  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:30:16  

Additional Information
 Jupiter MOID = 1.68568 au 
 T_jup = 3.196 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.577292710409835E-15 -8.417924339299217E-15 1.88802540974909E-12 1.961438758772538E-15 3.804463264292858E-13 -4.445691083236999E-17
q -8.417924339299217E-15 2.827791488259311E-14 -5.160430748513868E-12 -3.529773013171005E-15 -1.075826233760944E-12 1.424307311827095E-15
tp 1.88802540974909E-12 -5.160430748513868E-12 1.948703602243508E-8 5.13341764990629E-12 3.466284314870167E-9 4.351112141768439E-12
node 1.961438758772538E-15 -3.529773013171005E-15 5.13341764990629E-12 8.194766088160302E-9 -8.175178045689464E-9 1.96094923420719E-10
peri 3.804463264292858E-13 -1.075826233760944E-12 3.466284314870167E-9 -8.175178045689464E-9 8.791540813307957E-9 -1.949002225121559E-10
i -4.445691083236999E-17 1.424307311827095E-15 4.351112141768439E-12 1.96094923420719E-10 -1.949002225121559E-10 3.709834682155544E-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 15.1   n/a MPO436779  

154138 (2002 EZ122)          Discovered 2002-Mar-12 by LONEOS at Anderson Mesa
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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Alternate Designations
 2002 EZ122 = 1998 MK36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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