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JPL Small-Body Database Browser
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39888 (1998 ES20)
Classification: Main-belt Asteroid          SPK-ID: 2039888
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1406130367437168 3.1807e-08  
a 2.421000714092235 9.6749e-09 au
q 2.080576451725019 7.5294e-08 au
i 2.600981062084285 4.1868e-06 deg
node 16.07196217463181 8.6518e-05 deg
peri 245.5505365270566 8.8144e-05 deg
M 237.2032191324041 1.7408e-05 deg
tp 2459469.826724156023
(2021-Sep-12.32672416)
6.7464e-05 TDB
period 1375.912458799264
3.77
8.2477e-06
2.258e-08
d
yr
n .2616445528185464 1.5684e-09 deg/d
Q 2.761424976459451 1.1035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1135  
   data-arc span      7980 days (21.85 yr)  
   first obs. used      1998-02-23  
   last obs. used      2019-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51253  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 05:52:52  

Additional Information
 Earth MOID = 1.06678 au 
 Jupiter MOID = 2.30355 au 
 T_jup = 3.499 
[ 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 15.4   n/a MPO302294  

39888 (1998 ES20)          Discovered 1998-Mar-03 by Elst, E. W. at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 ES20 = 1999 RN55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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