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43742 (1981 EX12)
Classification: Main-belt Asteroid          SPK-ID: 2043742
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1095111753232852 4.1927e-08  
a 2.759828193088546 1.4735e-08 au
q 2.457596163973081 1.1492e-07 au
i 11.41856818705329 5.1508e-06 deg
node 207.4601114322061 2.0639e-05 deg
peri 55.86310686967348 3.1001e-05 deg
M 169.0573325410905 2.4751e-05 deg
tp 2458414.082790768192
(2018-Oct-22.58279077)
0.00011351 TDB
period 1674.64014170837
4.58
1.3411e-05
3.672e-08
d
yr
n .2149715577895733 1.7216e-09 deg/d
Q 3.062060222204011 1.6348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1019  
   data-arc span      14611 days (40.00 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54458  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:22:04  

Additional Information
 Earth MOID = 1.46219 au 
 Jupiter MOID = 2.00952 au 
 T_jup = 3.305 
[ 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 14.79   n/a MPCxxxxx  

43742 (1981 EX12)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

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