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JPL Small-Body Database Browser
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20980 (1981 ED16)
Classification: Main-belt Asteroid          SPK-ID: 2020980
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .14502353105247 3.9726e-08  
a 2.256155083581759 7.6323e-09 au
q 1.928959506758751 8.9065e-08 au
i 3.585322839242068 3.7277e-06 deg
node 267.964799349501 7.3838e-05 deg
peri 291.2883786469328 7.5018e-05 deg
M 75.4146211052806 1.3908e-05 deg
tp 2458341.198575371454
(2018-Aug-10.69857537)		 4.747e-05 TDB
period 1237.80390988055
3.39		 6.281e-06
1.72e-08		 d
yr
n .2908376659068242 1.4758e-09 deg/d
Q 2.583350660404765 8.7391e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1036  
   data-arc span      14160 days (38.77 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54727  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:48:03  

Additional Information
 Earth MOID = .930168 au 
 Jupiter MOID = 2.39127 au 
 T_jup = 3.607 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO395204  

20980 (1981 ED16)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 ED16 = 1998 FH119 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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