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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1406894897732449 3.1821e-08  
a 2.420883362464798 9.6405e-09 au
q 2.080290517399088 7.5318e-08 au
i 2.60125174671564 4.2104e-06 deg
node 16.08798431997809 8.6629e-05 deg
peri 245.4396057558416 8.8269e-05 deg
M 132.6669844099456 1.7268e-05 deg
tp 2458093.486431116977
(2017-Dec-05.98643112)
6.5219e-05 TDB
period 1375.812419417631
3.77
8.2182e-06
2.25e-08
d
yr
n .261663577766208 1.563e-09 deg/d
Q 2.761476207530508 1.0997e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1125  
   data-arc span      7957 days (21.79 yr)  
   first obs. used      1998-02-23  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51485  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:11:32  

Additional Information
 Earth MOID = 1.06615 au 
 Jupiter MOID = 2.30308 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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