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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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1697139877152131 2.9996e-08  
a 2.242038894510943 8.0497e-09 au
q 1.861533533110882 6.9596e-08 au
i 5.996833172704585 4.2914e-06 deg
node 1.258487141077311 3.2301e-05 deg
peri 69.75397019977243 3.5406e-05 deg
M 217.6299257096417 1.5428e-05 deg
tp 2459485.430333801888
(2021-Sep-27.93033380)
5.4127e-05 TDB
period 1226.205163120453
3.36
6.6037e-06
1.808e-08
d
yr
n .2935887164949382 1.5811e-09 deg/d
Q 2.622544255911003 9.4158e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1280  
   data-arc span      15594 days (42.69 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54465  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:01:02  

Additional Information
 Earth MOID = .885688 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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