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39885 (1998 EG12)
Classification: Main-belt Asteroid          SPK-ID: 2039885
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127711261240324 3.667e-08  
a 2.265160477659731 8.6828e-09 au
q 1.975873976146072 8.4128e-08 au
i 6.703988460007222 3.7078e-06 deg
node 102.6245382555911 3.3422e-05 deg
peri 266.1587591852856 3.81e-05 deg
M 342.4445661688832 2.2422e-05 deg
tp 2459061.223382546312
(2020-Jul-30.72338255)
7.7767e-05 TDB
period 1245.222301366601
3.41
7.1598e-06
1.96e-08
d
yr
n .2891050052708732 1.6623e-09 deg/d
Q 2.554446979173389 9.7917e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1406  
   data-arc span      7824 days (21.42 yr)  
   first obs. used      1998-02-26  
   last obs. used      2019-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:38:01  

Additional Information
 Earth MOID = .988362 au 
 Jupiter MOID = 2.92112 au 
 T_jup = 3.597 
[ 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 14.7   n/a MPO337581  

39885 (1998 EG12)          Discovered 1998-Mar-01 by Elst, E. W. at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 EG12 = 1999 NZ18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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