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JPL Small-Body Database Browser
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58131 (1981 EQ39)
Classification: Main-belt Asteroid          SPK-ID: 2058131
[ 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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516495731523601 4.8304e-08  
a 3.035105758429924 2.4474e-08 au
q 2.574833265691756 1.437e-07 au
i .469332855725295 4.919e-06 deg
node 240.1645064359282 0.00075865 deg
peri 337.1329367559523 0.00075888 deg
M 39.82278388062569 2.0386e-05 deg
tp 2458386.857187797383
(2018-Sep-25.35718780)		 0.00010846 TDB
period 1931.341932886834
5.29		 2.336e-05
6.396e-08		 d
yr
n .1863988938830202 2.2546e-09 deg/d
Q 3.495378251168092 2.8185e-08 au
   Orbit Determination Parameters
   # obs. used (total)      416  
   data-arc span      13611 days (37.26 yr)  
   first obs. used      1981-02-09  
   last obs. used      2018-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56508  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:33:15  

Additional Information
 Earth MOID = 1.56775 au 
 Jupiter MOID = 1.47898 au 
 T_jup = 3.224 
[ 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 15.7   n/a MPO309591  

58131 (1981 EQ39)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EQ39 = 1997 HL14 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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