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JPL Small-Body Database Browser
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20251 (1998 EA12)
Classification: Main-belt Asteroid          SPK-ID: 2020251
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1601330773629828 3.2752e-08  
a 2.368233394773454 9.1463e-09 au
q 1.989000893354597 7.9611e-08 au
i 3.482962892051924 3.8195e-06 deg
node 83.37433020545446 6.5313e-05 deg
peri 132.547151542566 6.7045e-05 deg
M 252.7043036815926 1.7536e-05 deg
tp 2458997.248213584783
(2020-May-27.74821359)		 6.6065e-05 TDB
period 1331.17507776515
3.64		 7.7116e-06
2.111e-08		 d
yr
n .2704377553434879 1.5667e-09 deg/d
Q 2.74746589619231 1.0611e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1308  
   data-arc span      14920 days (40.85 yr)  
   first obs. used      1978-11-29  
   last obs. used      2019-10-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54179  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:22:38  

Additional Information
 Earth MOID = .984005 au 
 Jupiter MOID = 2.22312 au 
 T_jup = 3.527 
[ 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 15.1   n/a MPO459006  

20251 (1998 EA12)          Discovered 1998-Mar-01 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 EA12 = 1978 WG5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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