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523972 (1999 CW8)
Classification: Apollo [NEO]          SPK-ID: 2523972
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5994163914658719 5.6326e-08  
a 2.235200075281695 7.5656e-09 au
q .8953845119520961 1.2349e-07 au
i 33.64722939397001 2.4591e-05 deg
node 316.9990991416762 1.1245e-05 deg
peri 262.1059958427888 2.8474e-05 deg
M 111.6553683783269 1.6414e-05 deg
tp 2458621.926561283543
(2019-May-18.42656128)
5.3952e-05 TDB
period 1220.599062251437
3.34
6.1972e-06
1.697e-08
d
yr
n .2949371428616106 1.4974e-09 deg/d
Q 3.575015638611294 1.2101e-08 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      7506 days (20.55 yr)  
   first obs. used      1999-02-12  
   last obs. used      2019-09-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48886  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-02 06:00:04  

Additional Information
 Earth MOID = .231259 au 
 Jupiter MOID = 2.68051 au 
 T_jup = 3.201 
[ 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 18.6   n/a MPO160722  
SMASSII spectral type spec_B B   n/a Binzel et al. (2004) Icarus 170, 259-294  

523972 (1999 CW8)          Discovered 1999-Feb-12 by LINEAR at Socorro
Reference: Last Updated: 2019-05-29

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