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(2018 ER1)
Classification: Apollo [NEO]          SPK-ID: 3799826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09184801298462794 3.036e-05  
a 1.008548974105291 5.8057e-06 au
q .9159157548360349 2.5371e-05 au
i 6.418918565483772 0.0018894 deg
node 188.3128962210371 0.00023294 deg
peri 101.3606791896891 0.0004045 deg
M 154.0875760373507 0.0056426 deg
tp 2459042.153292568590
(2020-Jul-11.65329257)
0.0044315 TDB
period 369.9507523013388
1.01
0.0031944
8.746e-06
d
yr
n .9731024947525082 8.4025e-06 deg/d
Q 1.101182193374547 6.3389e-06 au
  Orbit Determination Parameters
   # obs. used (total)      61  
   data-arc span      28 days  
   first obs. used      2018-03-08  
   last obs. used      2018-04-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .45224  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:24:03  

Additional Information
 Earth MOID = .0137229 au 
 Jupiter MOID = 3.9431 au 
 T_jup = 6.031 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.6   n/a E2018G20  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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