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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516082430004235 4.8232e-08  
a 3.031558880694666 2.233e-08 au
q 2.571949565240217 1.424e-07 au
i .469482851843533 4.4041e-06 deg
node 240.1665744237678 0.00070661 deg
peri 336.676157702173 0.00070682 deg
M 114.8979946658678 2.0193e-05 deg
tp 2458385.170995533146
(2018-Sep-23.67099553)
0.00010468 TDB
period 1927.957422166157
5.28
2.1301e-05
5.832e-08
d
yr
n .1867261153493327 2.0631e-09 deg/d
Q 3.491168196149115 2.5715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      497  
   data-arc span      14519 days (39.75 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54483  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:56:58  

Additional Information
 Earth MOID = 1.56483 au 
 Jupiter MOID = 1.48188 au 
 T_jup = 3.225 
[ 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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