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JPL Small-Body Database Browser
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136861 (1998 FJ39)
Classification: Main-belt Asteroid          SPK-ID: 2136861
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .119097343330247 4.9065e-08  
a 2.32871265179689 1.2639e-08 au
q 2.051369161588346 1.1522e-07 au
i 3.490875572843917 4.7197e-06 deg
node 158.5360418510393 7.8424e-05 deg
peri 44.61076204759317 8.0269e-05 deg
M 66.53189119294665 1.9197e-05 deg
tp 2458760.616902121277
(2019-Oct-04.11690212)
6.863e-05 TDB
period 1297.992792447415
3.55
1.0567e-05
2.893e-08
d
yr
n .2773513089554266 2.2579e-09 deg/d
Q 2.606056142005434 1.4144e-08 au
  Orbit Determination Parameters
   # obs. used (total)      498  
   data-arc span      7630 days (20.89 yr)  
   first obs. used      1998-03-20  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60706  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:27:37  

Additional Information
 Earth MOID = 1.04983 au 
 Jupiter MOID = 2.35164 au 
 T_jup = 3.560 
[ show covariance matrix ]

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 16.5   n/a MPO469440  
diameter diameter 2.543 km 0.889 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136861 (1998 FJ39)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 FJ39 = 2005 EE45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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