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JPL Small-Body Database Browser
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39438 (2218 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2039438
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1697139541491353 3.0609e-08  
a 2.242038889411929 8.2457e-09 au
q 1.861533604133695 7.1016e-08 au
i 5.996831736744432 4.5744e-06 deg
node 1.258489587319463 3.2761e-05 deg
peri 69.75396587463868 3.6118e-05 deg
M 217.6299282187266 1.5788e-05 deg
tp 2459485.430323601333
(2021-Sep-27.93032360)
5.5304e-05 TDB
period 1226.205158937361
3.36
6.7645e-06
1.852e-08
d
yr
n .2935887174964905 1.6196e-09 deg/d
Q 2.622544174690164 9.6451e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1256  
   data-arc span      15191 days (41.59 yr)  
   first obs. used      1977-10-07  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53833  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:08:56  

Additional Information
 Earth MOID = .885689 au 
 Jupiter MOID = 2.66997 au 
 T_jup = 3.608 
[ 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 15.3   n/a MPO431945  

39438 (2218 T-3)          Discovered 1977-Oct-16 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2218 T-3 = 1992 EK19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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