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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8260272542014105 1.2861e-07  
a 1.698913909251625 1.1991e-08 au
q .2955647176679208 2.1813e-07 au
i 39.00331022777976 3.8415e-05 deg
node 181.7291625266762 4.2499e-06 deg
peri 123.354471064746 2.2186e-05 deg
M 26.27756749307073 4.8674e-06 deg
tp 2459337.461115346107
(2021-May-02.96111535)
1.1428e-05 TDB
period 808.8267105015022
2.21
8.5633e-06
2.345e-08
d
yr
n .4450891585625143 4.7123e-09 deg/d
Q 3.102263100835328 2.1896e-08 au
  Orbit Determination Parameters
   # obs. used (total)      211  
   # 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35761  
   source      ORB  
   producer      Giorgini  
   solution date      2021-Jun-29 22:24:06  

Additional Information
 Earth MOID = .00316896 au 
 Jupiter MOID = 3.10798 au 
 T_jup = 3.563 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456200.5 (2012-Sep-30.0) TDB
Reference: JPL 67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8261909691075294 1.2905e-07  
q .2957275390237875 2.1959e-07 au
tp 2456095.782942228270
(2012-Jun-17.28294223)
1.1068e-05 TDB
node 181.9131920291442 4.3347e-06 deg
peri 123.190423653987 2.2187e-05 deg
i 38.91011023348042 3.8438e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      211  
   # 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35761  
   source      ORB  
   producer      Giorgini  
   solution date      2021-Jun-29 22:24:06  

Additional Information
 Jupiter MOID = 3.10798 au 
 T_jup = 3.563 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.665293532332633E-14 -2.833697986611525E-14 -1.091580230816567E-12 2.827902285911888E-13 2.690795484246761E-12 -5.745298654917889E-13
q -2.833697986611525E-14 4.821897194901042E-14 1.856297003581818E-12 -4.811030095698454E-13 -4.578082928434292E-12 9.815660741721354E-13
tp -1.091580230816567E-12 1.856297003581818E-12 1.224907886080695E-10 -2.053885975035927E-11 -1.590159427744249E-10 6.540407465863605E-11
node 2.827902285911888E-13 -4.811030095698454E-13 -2.053885975035927E-11 1.878999966989534E-11 2.083193316044972E-11 -5.01141830288221E-11
peri 2.690795484246761E-12 -4.578082928434292E-12 -1.590159427744249E-10 2.083193316044972E-11 4.922729249926384E-10 4.214664624144879E-11
i -5.745298654917889E-13 9.815660741721354E-13 6.540407465863605E-11 -5.01141830288221E-11 4.214664624144879E-11 1.47746520828478E-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 17.59   n/a MPCxxxxx  
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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