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118167 (1981 EJ30)
Classification: Mars-crossing Asteroid          SPK-ID: 2118167
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2962165858644147 4.4795e-08  
a 2.02094512524034 8.2795e-09 au
q 1.422307660022314 9.0974e-08 au
i 4.551775394386867 5.3273e-06 deg
node 176.1069999427444 5.0572e-05 deg
peri 28.98230878868088 5.2236e-05 deg
M 287.8324119058602 1.987e-05 deg
tp 2459410.863263186077
(2021-Jul-15.36326319)
5.9137e-05 TDB
period 1049.373780487162
2.87
6.4487e-06
1.766e-08
d
yr
n .343061744722527 2.1082e-09 deg/d
Q 2.619582590458365 1.0732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      451  
   data-arc span      14617 days (40.02 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59261  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:01  

Additional Information
 Earth MOID = .420441 au 
 Jupiter MOID = 2.3387 au 
 T_jup = 3.761 
[ 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 17.3   n/a MPO436567  

118167 (1981 EJ30)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1981 EJ30 = 2001 BW60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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