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JPL Small-Body Database Browser
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(2018 ER1)
Classification: Apollo [NEO]          SPK-ID: 3799826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09182768571379489 3.0299e-05  
a 1.008800050530797 5.5522e-06 au
q .9161642765425942 2.5548e-05 au
i 6.419225774855429 0.001889 deg
node 188.2681420019094 0.00017347 deg
peri 101.2636518711181 0.0004895 deg
M 344.9369439028065 0.0075187 deg
tp 2459411.985194426054
(2021-Jul-16.48519443)
0.0078572 TDB
period 370.0889087452857
1.01
0.0030553
8.365e-06
d
yr
n .9727392296637849 8.0305e-06 deg/d
Q 1.101435824518999 6.062e-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 = .0134803 au 
 Jupiter MOID = 3.94148 au 
 T_jup = 6.029 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458193.5 (2018-Mar-16.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09184785827390846 3.025e-05  
q .9144783733936863 2.4009e-05 au
tp 2458304.311439794918
(2018-Jul-04.81143979)
0.0042496 TDB
node 188.6976810923517 0.00055314 deg
peri 103.1895557083043 0.0016362 deg
i 6.437946246636833 0.0018783 deg
  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
 Jupiter MOID = 3.94148 au 
 T_jup = 6.029 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.150713283058192E-10 -7.261140499321631E-10 -1.281954214366896E-7 -1.672111651826493E-8 -4.812445252855138E-8 5.681881437492693E-8
q -7.261140499321631E-10 5.764427503685032E-10 1.015620000031352E-7 1.327457363455695E-8 3.799038545754827E-8 -4.508624656899422E-8
tp -1.281954214366896E-7 1.015620000031352E-7 1.805867602195302E-5 2.338524508515019E-6 6.862369517052742E-6 -7.95952765594291E-6
node -1.672111651826493E-8 1.327457363455695E-8 2.338524508515019E-6 3.059636253110141E-7 8.743256805685575E-7 -1.038370370713009E-6
peri -4.812445252855138E-8 3.799038545754827E-8 6.862369517052742E-6 8.743256805685575E-7 2.677254006712076E-6 -2.987640155756926E-6
i 5.681881437492693E-8 -4.508624656899422E-8 -7.95952765594291E-6 -1.038370370713009E-6 -2.987640155756926E-6 3.528111729920909E-6

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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