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30763 (1981 EJ47)
Classification: Main-belt Asteroid          SPK-ID: 2030763
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08670802473798483 6.1263e-08  
a 2.41836971040737 1.2717e-08 au
q 2.208677649731775 1.4352e-07 au
i 6.175020947235995 4.4842e-06 deg
node 167.79248899 4.421e-05 deg
peri 65.75487156242475 5.1363e-05 deg
M 208.7949387370172 2.3831e-05 deg
tp 2459973.460786031935
(2023-Jan-28.96078603)
9.0309e-05 TDB
period 1373.670175036304
3.76
1.0836e-05
2.967e-08
d
yr
n .2620716432097579 2.0672e-09 deg/d
Q 2.628061771082965 1.382e-08 au
  Orbit Determination Parameters
   # obs. used (total)      671  
   data-arc span      14582 days (39.92 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54515  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:39:46  

Additional Information
 Earth MOID = 1.20714 au 
 Jupiter MOID = 2.36173 au 
 T_jup = 3.502 
[ 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 16.23   n/a MPCxxxxx  

30763 (1981 EJ47)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EJ47 = 2000 HD67 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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