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JPL Small-Body Database Browser
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20982 (1981 EL17)
Classification: Main-belt Asteroid          SPK-ID: 2020982
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .075076993646396 4.0326e-08  
a 2.621769063688752 1.5411e-08 au
q 2.424934524351874 1.0958e-07 au
i 14.07762499323165 4.9677e-06 deg
node 192.04866106278 1.4717e-05 deg
peri 45.8553625015723 3.3812e-05 deg
M 300.931510457883 3.1179e-05 deg
tp 2458854.915427811152
(2020-Jan-06.41542781)
0.00013513 TDB
period 1550.565364409894
4.25
1.3672e-05
3.743e-08
d
yr
n .2321733789900607 2.0472e-09 deg/d
Q 2.818603603025629 1.6569e-08 au
  Orbit Determination Parameters
   # obs. used (total)      904  
   data-arc span      13963 days (38.23 yr)  
   first obs. used      1981-02-14  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51113  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:57:18  

Additional Information
 Earth MOID = 1.43565 au 
 Jupiter MOID = 2.18083 au 
 T_jup = 3.358 
[ 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 14.9   n/a MPO435894  

20982 (1981 EL17)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EL17 = 1998 FT48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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