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39798 (1997 TW28)
Classification: Jupiter Trojan          SPK-ID: 2039798
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1042732335922452 1.146e-07  
a 5.18446880535948 2.4845e-07 au
q 4.643867478566523 7.3397e-07 au
i 8.049170295796602 9.712e-06 deg
node 39.41521446966794 5.5095e-05 deg
peri 350.512128955865 6.9431e-05 deg
M 290.1650330506604 5.172e-05 deg
tp 2459436.921632650328
(2021-Aug-10.42163265)
0.00066199 TDB
period 4311.762443770527
11.80
0.00030994
8.486e-07
d
yr
n .08349254039264491 6.0016e-09 deg/d
Q 5.725070132152438 2.7435e-07 au
  Orbit Determination Parameters
   # obs. used (total)      346  
   data-arc span      11989 days (32.82 yr)  
   first obs. used      1986-10-31  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6274  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:00:28  

Additional Information
 Earth MOID = 3.64906 au 
 Jupiter MOID = .276422 au 
 T_jup = 2.970 
[ 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 MPO439363  
diameter diameter 12.462 km 0.804 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.150   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

39798 (1997 TW28)          Discovered 1997-Oct-06 by Uppsala-DLR Trojan Survey at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 TW28 = 1986 UR3 = 1996 RP28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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