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(2017 AK21)
Classification: Outer Main-belt Asteroid          SPK-ID: 3766636
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .282718168037857 5.2543e-07  
a 3.875044964562278 1.7029e-07 au
q 2.779499351116908 1.9832e-06 au
i 36.18556639936319 7.3856e-05 deg
node 359.2119793839743 1.7758e-05 deg
peri 115.2495017883457 0.00018808 deg
M 185.4621485137556 0.00017039 deg
tp 2460351.329919071381
(2024-Feb-10.82991907)
0.001357 TDB
period 2786.208073061006
7.63
0.00018366
5.028e-07
d
yr
n .1292078662325079 8.517e-09 deg/d
Q 4.970590578007647 2.1843e-07 au
  Orbit Determination Parameters
   # obs. used (total)      85  
   data-arc span      6400 days (17.52 yr)  
   first obs. used      1999-10-14  
   last obs. used      2017-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53193  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-May-15 14:06:24  

Additional Information
 Earth MOID = 1.95928 au 
 Jupiter MOID = .798562 au 
 T_jup = 2.679 
[ show covariance matrix ]

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 15.6   n/a MPO405369  

[ show close-approach data ]
Alternate Designations
 2017 AK21 = 2017 CP3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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