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58133 (1981 EN40)
Classification: Main-belt Asteroid          SPK-ID: 2058133
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1259587114240398 3.3439e-08  
a 2.372917740609693 9.3862e-09 au
q 2.074028079687253 8.0384e-08 au
i 2.184053999450103 4.2396e-06 deg
node 196.1205108705574 9.9294e-05 deg
peri 264.5030891662009 0.00010089 deg
M 322.8987736629461 1.985e-05 deg
tp 2459138.096762620848
(2020-Oct-15.59676262)
7.3955e-05 TDB
period 1335.126609926462
3.66
7.9218e-06
2.169e-08
d
yr
n .2696373492397313 1.5999e-09 deg/d
Q 2.671807401532134 1.0569e-08 au
  Orbit Determination Parameters
   # obs. used (total)      857  
   data-arc span      14504 days (39.71 yr)  
   first obs. used      1981-03-02  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53221  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:40:10  

Additional Information
 Earth MOID = 1.09225 au 
 Jupiter MOID = 2.46057 au 
 T_jup = 3.532 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO309591  
diameter diameter 3.940 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58133 (1981 EN40)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EN40 = 1996 HH23 = 2001 RO6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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