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72239 (2001 AF21)
Classification: Main-belt Asteroid          SPK-ID: 2072239
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06240029071060489 3.3549e-08  
a 2.4093297042976 1.1053e-08 au
q 2.258986830331734 7.956e-08 au
i 7.881997766224898 4.3199e-06 deg
node 130.3325474339007 2.7338e-05 deg
peri 318.2327779622034 4.8658e-05 deg
M 145.8109543861738 3.9222e-05 deg
tp 2458647.238523757656
(2019-Jun-12.73852376)
0.00014824 TDB
period 1365.975089359474
3.74
9.4e-06
2.574e-08
d
yr
n .2635479979132044 1.8136e-09 deg/d
Q 2.559672578263466 1.1743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      997  
   data-arc span      7561 days (20.70 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51845  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:00:58  

Additional Information
 Earth MOID = 1.28184 au 
 Jupiter MOID = 2.54234 au 
 T_jup = 3.505 
[ 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 15.73   n/a E2021B10  

72239 (2001 AF21)          Discovered 2001-Jan-03 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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