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137126 (1999 CF9)
Classification: Apollo [NEO, PHA]          SPK-ID: 2137126
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 139 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6002718913516477 2.0289e-08  
a 1.772701311499904 2.9194e-09 au
q .7085985424443103 3.5172e-08 au
i 5.54760771513847 8.5579e-06 deg
node 157.0733131629741 1.9341e-05 deg
peri 90.27789182342147 1.9812e-05 deg
M 56.59510102552978 2.7698e-06 deg
tp 2459064.972285489511
(2020-Aug-03.47228549)
6.3006e-06 TDB
period 862.0883493390562
2.36
2.1296e-06
5.831e-09
d
yr
n .4175906103776996 1.0316e-09 deg/d
Q 2.836804080555498 4.6718e-09 au
  Orbit Determination Parameters
   # obs. used (total)      684  
   # delay obs. used      5  
   # Doppler obs. used      3  
   data-arc span      7969 days (21.82 yr)  
   first obs. used      1999-01-15  
   last obs. used      2020-11-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4742  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:20:29  

Additional Information
 Earth MOID = .0186827 au 
 Jupiter MOID = 2.23067 au 
 T_jup = 3.865 
[ show covariance matrix ]

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 18.0   n/a MPO270665  
SMASSII spectral type spec_B Q   n/a Binzel et al. (2001) Icarus 151, 139-149  

137126 (1999 CF9)          Discovered 1999-Feb-12 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

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