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425755 (2011 CP4)
Classification: Aten [NEO, PHA]          SPK-ID: 2425755
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 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .870329034824864 2.3466e-08  
a .9116708995201632 1.5774e-08 au
q .118217245462864 2.0579e-08 au
i 9.461905382086773 8.8511e-06 deg
node 147.9958189455891 9.1172e-06 deg
peri 159.9133688697635 1.0509e-05 deg
M 1.175498646750289 0.00010557 deg
tp 2459199.461813928156
(2020-Dec-15.96181393)
9.3212e-05 TDB
period 317.9476104860811
0.87
8.2518e-06
2.259e-08
d
yr
n 1.132262008352976 2.9386e-08 deg/d
Q 1.705124553577462 2.9502e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 5.32578894406747E-14 1.73E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      145  
   # delay obs. used      4  
   # Doppler obs. used      7  
   data-arc span      5869 days (16.07 yr)  
   first obs. used      2002-01-10  
   last obs. used      2018-02-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .68652  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 13:45:36  

Additional Information
 Earth MOID = .0190377 au 
 Jupiter MOID = 3.59352 au 
 T_jup = 6.114 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 21.2   n/a MPO265010  

425755 (2011 CP4)          Discovered 2011-Feb-02 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2015-02-04

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