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39795 (1997 SF28)
Classification: Jupiter Trojan          SPK-ID: 2039795
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09619007743526005 6.432e-08  
a 5.160214404080893 1.5285e-07 au
q 4.663852980969807 4.3603e-07 au
i 6.73563606034409 9.1822e-06 deg
node 344.8639207128184 4.6865e-05 deg
peri 79.9151357651379 7.1605e-05 deg
M 306.3406699241779 5.8661e-05 deg
tp 2459638.679416319823
(2022-Feb-28.17941632)
0.00071318 TDB
period 4281.540405936875
11.72
0.00019023
5.208e-07
d
yr
n .08408188779459289 3.7358e-09 deg/d
Q 5.656575827191978 1.6755e-07 au
  Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      8038 days (22.01 yr)  
   first obs. used      1997-09-30  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5885  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:49:08  

Additional Information
 Earth MOID = 3.68564 au 
 Jupiter MOID = .0903881 au 
 T_jup = 2.977 
[ 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 12.5   n/a MPO452720  
diameter diameter 18.342 km 0.742 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.052   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

39795 (1997 SF28)          Discovered 1997-Sep-30 by Spacewatch at Kitt Peak
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 SF28 = 1999 AF5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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