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JPL Small-Body Database Browser
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(2018 CH2)
Classification: Apollo [NEO]          SPK-ID: 3799274
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5348132635331001 3.0232e-05  
a 2.073278256006411 0.00029741 au
q .9644615456994081 7.5672e-05 au
i 5.473052636147206 0.0051951 deg
node 324.2032864602151 0.0064075 deg
peri 202.3360571001249 0.032667 deg
M 40.59736330624335 0.3003 deg
tp 2459273.535388013757
(2021-Feb-28.03538801)
0.93603 TDB
period 1090.397422638526
2.99
0.23463
0.0006424
d
yr
n .3301548522820952 7.1041e-05 deg/d
Q 3.182094966313413 0.00045647 au
  Orbit Determination Parameters
   # obs. used (total)      36  
   data-arc span      5 days  
   first obs. used      2018-02-08  
   last obs. used      2018-02-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .58988  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:22:01  

Additional Information
 Earth MOID = .00198128 au 
 Jupiter MOID = 1.80862 au 
 T_jup = 3.572 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458158.5 (2018-Feb-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5414368918381687 0.00025955  
q .9655042254152332 9.5393e-06 au
tp 2458179.682774034290
(2018-Mar-02.18277403)
0.00053058 TDB
node 324.2816945403194 0.00010309 deg
peri 201.7445224605574 0.0013408 deg
i 5.441503506897267 0.0019179 deg
  Orbit Determination Parameters
   # obs. used (total)      36  
   data-arc span      5 days  
   first obs. used      2018-02-08  
   last obs. used      2018-02-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .58988  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:22:01  

Additional Information
 Jupiter MOID = 1.80862 au 
 T_jup = 3.572 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.736439909702249E-8 -2.475351986678018E-9 -1.366689137059442E-7 2.663331256154663E-8 3.473463846853716E-7 4.977668128805505E-7
q -2.475351986678018E-9 9.099818717382515E-11 5.009103895916153E-9 -9.790195114032541E-10 -1.277987136660827E-8 -1.829248509258994E-8
tp -1.366689137059442E-7 5.009103895916153E-9 2.815165461046363E-7 -5.388775138927401E-8 -6.993415748343781E-7 -1.009300969918713E-6
node 2.663331256154663E-8 -9.790195114032541E-10 -5.388775138927401E-8 1.062812690365567E-8 1.374128063028732E-7 1.967419346712255E-7
peri 3.473463846853716E-7 -1.277987136660827E-8 -6.993415748343781E-7 1.374128063028732E-7 1.797863700270194E-6 2.567390955387297E-6
i 4.977668128805505E-7 -1.829248509258994E-8 -1.009300969918713E-6 1.967419346712255E-7 2.567390955387297E-6 3.67828588040799E-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 28.0   n/a MPO435639  

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