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72225 (2001 AP12)
Classification: Main-belt Asteroid          SPK-ID: 2072225
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .170438196214853 3.712e-08  
a 2.242793502478007 9.0985e-09 au
q 1.860535823433263 8.545e-08 au
i 5.478327393793276 4.5111e-06 deg
node 145.8345077367972 4.2498e-05 deg
peri 236.9807621399572 4.4768e-05 deg
M 111.1590215993719 1.6973e-05 deg
tp 2459017.687260859680
(2020-Jun-17.18726086)
5.6611e-05 TDB
period 1226.824275064381
3.36
7.4655e-06
2.044e-08
d
yr
n .2934405581281053 1.7856e-09 deg/d
Q 2.62505118152275 1.0649e-08 au
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      15186 days (41.58 yr)  
   first obs. used      1979-07-24  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52821  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:46:26  

Additional Information
 Earth MOID = .869101 au 
 Jupiter MOID = 2.84186 au 
 T_jup = 3.608 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457222.5 (2015-Jul-19.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714575751248115 3.7198e-08  
q 1.857547409437719 8.5665e-08 au
tp 2457790.719265233639
(2017-Feb-06.21926523)
5.2535e-05 TDB
node 145.9157390862465 4.253e-05 deg
peri 236.8301951568348 4.4756e-05 deg
i 5.477048626543553 4.5098e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      15186 days (41.58 yr)  
   first obs. used      1979-07-24  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52821  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:46:26  

Additional Information
 Jupiter MOID = 2.84186 au 
 T_jup = 3.608 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.383707815787143E-15 -3.17504716838044E-15 -3.979186483935215E-13 -3.84944953598318E-15 -6.443736889079592E-14 -2.97975588243908E-16
q -3.17504716838044E-15 7.338493108340966E-15 1.056235219080973E-12 8.94423942812287E-15 1.793575514148311E-13 9.639626135111407E-16
tp -3.979186483935215E-13 1.056235219080973E-12 2.759926430731529E-9 9.886933926197059E-12 7.420018857991888E-10 1.688029448234533E-12
node -3.84944953598318E-15 8.94423942812287E-15 9.886933926197059E-12 1.808832785382246E-9 -1.797500074757082E-9 -2.923589610184158E-11
peri -6.443736889079592E-14 1.793575514148311E-13 7.420018857991888E-10 -1.797500074757082E-9 2.003074029506374E-9 2.949259451079084E-11
i -2.97975588243908E-16 9.639626135111407E-16 1.688029448234533E-12 -2.923589610184158E-11 2.949259451079084E-11 2.03383913132567E-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 16.38   n/a MPCxxxxx  

72225 (2001 AP12)          Discovered 2001-Jan-02 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 AP12 = 1979 OB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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