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231937 (2001 FO32)
Classification: Apollo [NEO, PHA]          SPK-ID: 2231937
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8261262310277441 1.3274e-07  
a 1.701128763827329 3.3749e-09 au
q .2957816696737723 2.2579e-07 au
i 38.9819263613617 3.9873e-05 deg
node 181.7315416381411 5.8947e-06 deg
peri 123.3136634711706 2.2402e-05 deg
M 299.1600427867363 7.6556e-06 deg
tp 2459337.459009987262
(2021-May-02.95900999)
1.7502e-05 TDB
period 810.4089130533667
2.22
2.4117e-06
6.603e-09
d
yr
n .4442201883535965 1.3219e-09 deg/d
Q 3.106475857980886 6.1629e-09 au
  Orbit Determination Parameters
   # obs. used (total)      199  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      7304 days (20.00 yr)  
   first obs. used      2001-03-23  
   last obs. used      2021-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35146  
   source      ORB  
   producer      Giorgini  
   solution date      2021-Mar-26 15:44:49  

Additional Information
 Earth MOID = .00375128 au 
 Jupiter MOID = 3.10609 au 
 T_jup = 3.560 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455885.5 (2011-Nov-20.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8262124263019551 1.3309e-07  
q .2956444611752032 2.2642e-07 au
tp 2456095.779067349827
(2012-Jun-17.27906735)
1.3288e-05 TDB
node 181.9143819404566 5.9793e-06 deg
peri 123.1977332666246 2.239e-05 deg
i 38.91417595036945 3.9894e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      199  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      7304 days (20.00 yr)  
   first obs. used      2001-03-23  
   last obs. used      2021-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35146  
   source      ORB  
   producer      Giorgini  
   solution date      2021-Mar-26 15:44:49  

Additional Information
 Jupiter MOID = 3.10609 au 
 T_jup = 3.560 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.771271023508327E-14 -3.013358065422032E-14 -1.206721261344298E-12 3.925956722972324E-13 2.674833763504052E-12 -8.227657394146788E-13
q -3.013358065422032E-14 5.126480718399466E-14 2.054329444256887E-12 -6.671784090304783E-13 -4.548921841315649E-12 1.407231560559803E-12
tp -1.206721261344298E-12 2.054329444256887E-12 1.765659969450717E-10 -2.003887414324076E-11 -1.460958257237204E-10 1.195973009056615E-10
node 3.925956722972324E-13 -6.671784090304783E-13 -2.003887414324076E-11 3.575211470605112E-11 1.926576527568382E-11 -6.850601497790899E-11
peri 2.674833763504052E-12 -4.548921841315649E-12 -1.460958257237204E-10 1.926576527568382E-11 5.013261091714599E-10 5.590731239160143E-11
i -8.227657394146788E-13 1.407231560559803E-12 1.195973009056615E-10 -6.850601497790899E-11 5.590731239160143E-11 1.591542735434478E-9

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 17.7   n/a MPO229967  
diameter diameter 0.55 km 0.11 personal communication from Ned Wright (2021-Mar-09) based on a preliminary NEOWISE result

231937 (2001 FO32)          Discovered 2001-Mar-23 by LINEAR at Socorro
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

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