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(2018 CH2)
Classification: Apollo [NEO]          SPK-ID: 3799274
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .535738577500973 0.0002645  
a 2.077759391029191 0.0011636 au
q .9646235304899244 9.3834e-06 au
i 5.466002563097664 0.0019015 deg
node 324.2302345239673 0.00015538 deg
peri 202.2447384822899 0.00058173 deg
M 335.9855487672141 0.2813 deg
tp 2459273.472877812709
(2021-Feb-27.97287781)
0.91607 TDB
period 1093.934471286595
3.00
0.91892
0.002516
d
yr
n .3290873534468641 0.00027644 deg/d
Q 3.190895251568458 0.0017869 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .58937  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Mar-08 06:27:37  

Additional Information
 Earth MOID = .00153921 au 
 Jupiter MOID = 1.80055 au 
 T_jup = 3.567 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458158.5 (2018-Feb-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5414324774680168 0.00025954  
q .9655043876675325 9.5392e-06 au
tp 2458179.682782820360
(2018-Mar-02.18278282)
0.00053056 TDB
node 324.2816926308154 0.00010309 deg
peri 201.7444996909068 0.0013408 deg
i 5.441471072670977 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .58937  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Mar-08 06:27:37  

Additional Information
 Jupiter MOID = 1.80055 au 
 T_jup = 3.567 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.736243415290065E-8 -2.475291740582513E-9 -1.366625278007852E-7 2.663246745297611E-8 3.473407247771595E-7 4.977545457226613E-7
q -2.475291740582513E-9 9.099641224097819E-11 5.008893563265541E-9 -9.789931839098427E-10 -1.277972493258038E-8 -1.829212266073592E-8
tp -1.366625278007852E-7 5.008893563265541E-9 2.814987365124554E-7 -5.388508746289187E-8 -6.993177120037077E-7 -1.009258354648889E-6
node 2.663246745297611E-8 -9.789931839098427E-10 -5.388508746289187E-8 1.06277656723963E-8 1.374102174868749E-7 1.967365809132013E-7
peri 3.473407247771595E-7 -1.277972493258038E-8 -6.993177120037077E-7 1.374102174868749E-7 1.797857571626561E-6 2.567360741548445E-6
i 4.977545457226613E-7 -1.829212266073592E-8 -1.009258354648889E-6 1.967365809132013E-7 2.567360741548445E-6 3.67821187552341E-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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