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39960 (1998 FU122)
Classification: Main-belt Asteroid          SPK-ID: 2039960
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .230227471851576 3.0426e-08  
a 2.430303270094919 1.1634e-08 au
q 1.870780692388348 7.3947e-08 au
i 7.401480554280472 5.4566e-06 deg
node 179.6037681288543 2.9403e-05 deg
peri 106.5756960288699 3.3206e-05 deg
M 239.0437547340716 1.7653e-05 deg
tp 2459465.459290539731
(2021-Sep-07.95929054)
7.0103e-05 TDB
period 1383.850368588227
3.79
9.9372e-06
2.721e-08
d
yr
n .2601437324233717 1.8681e-09 deg/d
Q 2.98982584780149 1.4313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      728  
   data-arc span      8918 days (24.42 yr)  
   first obs. used      1995-09-26  
   last obs. used      2020-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56472  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:18:53  

Additional Information
 Earth MOID = .871113 au 
 Jupiter MOID = 2.23444 au 
 T_jup = 3.460 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO502432  
diameter diameter 1.518 km 0.280 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.530   0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39960 (1998 FU122)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FU122 = 1999 TP283 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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