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72210 (2001 AK)
Classification: Main-belt Asteroid          SPK-ID: 2072210
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1146875736685204 2.7557e-08  
a 2.533687922931423 1.036e-08 au
q 2.243105402617185 6.8969e-08 au
i 3.480168443704641 3.6998e-06 deg
node 87.48342588517639 7.196e-05 deg
peri 206.7210710463455 7.5166e-05 deg
M 220.8430827941285 2.2983e-05 deg
tp 2459965.916971516520
(2023-Jan-21.41697152)
9.4988e-05 TDB
period 1473.086023044623
4.03
9.0347e-06
2.474e-08
d
yr
n .2443849132828917 1.4989e-09 deg/d
Q 2.824270443245661 1.1548e-08 au
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      10784 days (29.52 yr)  
   first obs. used      1991-11-02  
   last obs. used      2021-05-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58969  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:49:06  

Additional Information
 Earth MOID = 1.22727 au 
 Jupiter MOID = 2.33077 au 
 T_jup = 3.438 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457197.5 (2015-Jun-24.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1157061491667781 2.7437e-08  
q 2.240035748470177 6.8711e-08 au
tp 2457021.534770362838
(2014-Dec-30.03477036)
9.0853e-05 TDB
node 87.51221540697873 7.2004e-05 deg
peri 206.9555415086604 7.5173e-05 deg
i 3.479678738966768 3.6994e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      10784 days (29.52 yr)  
   first obs. used      1991-11-02  
   last obs. used      2021-05-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58969  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:49:06  

Additional Information
 Jupiter MOID = 2.33077 au 
 T_jup = 3.438 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.527918310703093E-16 -1.868934058687085E-15 -9.717568384512566E-14 -8.58768122618385E-15 -3.066211121255856E-14 1.00042624275651E-16
q -1.868934058687085E-15 4.721190931543777E-15 3.248036123380366E-13 2.176322739525034E-14 9.589275151279724E-14 -2.252021969322875E-16
tp -9.717568384512566E-14 3.248036123380366E-13 8.254218970154385E-9 4.009672690300979E-11 1.988450065278753E-9 -4.255882404082463E-12
node -8.58768122618385E-15 2.176322739525034E-14 4.009672690300979E-11 5.1845556701641E-9 -5.16484186664759E-9 -1.060081802880393E-10
peri -3.066211121255856E-14 9.589275151279724E-14 1.988450065278753E-9 -5.16484186664759E-9 5.651034955283372E-9 1.047639867612775E-10
i 1.00042624275651E-16 -2.252021969322875E-16 -4.255882404082463E-12 -1.060081802880393E-10 1.047639867612775E-10 1.3685457407597E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.87   n/a MPCxxxxx  

72210 (2001 AK)          Discovered 2001-Jan-01 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 AK = 1994 LE4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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