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173239 (1999 FJ61)
Classification: Main-belt Asteroid          SPK-ID: 2173239
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1575653081626872 4.4199e-08  
a 2.804640368985517 1.8595e-08 au
q 2.362726344960801 1.2428e-07 au
i 7.24757718328762 5.3828e-06 deg
node 348.4589263238497 2.9577e-05 deg
peri 216.1166401889058 3.2773e-05 deg
M 207.9417534845145 1.595e-05 deg
tp 2459925.138952220506
(2022-Dec-11.63895222)
7.9802e-05 TDB
period 1715.592733556974
4.70
1.7062e-05
4.671e-08
d
yr
n .2098400121184965 2.0869e-09 deg/d
Q 3.246554393010233 2.1525e-08 au
  Orbit Determination Parameters
   # obs. used (total)      430  
   data-arc span      7960 days (21.79 yr)  
   first obs. used      1999-03-22  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52977  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:56:13  

Additional Information
 Earth MOID = 1.36341 au 
 Jupiter MOID = 1.74457 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457297.5 (2015-Oct-02.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1569675402394874 4.4276e-08  
q 2.365501445365743 1.2443e-07 au
tp 2456494.869804607340
(2013-Jul-21.36980461)
6.7529e-05 TDB
node 348.5379036766108 2.955e-05 deg
peri 216.4316902571683 3.277e-05 deg
i 7.24998730538579 5.3842e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      430  
   data-arc span      7960 days (21.79 yr)  
   first obs. used      1999-03-22  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52977  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:56:13  

Additional Information
 Jupiter MOID = 1.74457 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.960386580201495E-15 -5.464863600954632E-15 -7.086922028449612E-13 -4.984869572698525E-15 -1.841366789520883E-13 1.400066666794371E-15
q -5.464863600954632E-15 1.548283927405971E-14 2.136602651282186E-12 9.508169949067092E-15 5.682144036767274E-13 -2.879436690180539E-15
tp -7.086922028449612E-13 2.136602651282186E-12 4.560166177740767E-9 -7.200775137090027E-12 9.613678522230714E-10 -3.123433098109256E-12
node -4.984869572698525E-15 9.508169949067092E-15 -7.200775137090027E-12 8.732289017298357E-10 -8.678313846021619E-10 4.812267082021785E-12
peri -1.841366789520883E-13 5.682144036767274E-13 9.613678522230714E-10 -8.678313846021619E-10 1.073904417581484E-9 -5.329490422394802E-12
i 1.400066666794371E-15 -2.879436690180539E-15 -3.123433098109256E-12 4.812267082021785E-12 -5.329490422394802E-12 2.89901369315187E-11

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 15.83   n/a E2021B55  

173239 (1999 FJ61)          Discovered 1999-Mar-22 by LONEOS at Anderson Mesa
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1999 FJ61 = 2003 AL85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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