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JPL Small-Body Database Browser
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46526 (1981 EN5)
Classification: Main-belt Asteroid          SPK-ID: 2046526
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09413488155559162 5.6964e-08  
a 2.480781871295829 1.2757e-08 au
q 2.247253763676137 1.3933e-07 au
i 5.168401113025983 3.5314e-06 deg
node 244.655753377999 8.1225e-05 deg
peri 230.7285202270718 9.4954e-05 deg
M 66.39710578928153 4.8563e-05 deg
tp 2458737.274508919282
(2019-Sep-10.77450892)
0.00019234 TDB
period 1427.188364049986
3.91
1.1009e-05
3.014e-08
d
yr
n .252244209011356 1.9457e-09 deg/d
Q 2.71430997891552 1.3958e-08 au
  Orbit Determination Parameters
   # obs. used (total)      773  
   data-arc span      14803 days (40.53 yr)  
   first obs. used      1979-10-18  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58222  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:33:35  

Additional Information
 Earth MOID = 1.26789 au 
 Jupiter MOID = 2.38196 au 
 T_jup = 3.467 
[ 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 MPO468328  

46526 (1981 EN5)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20020921/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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