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58134 (1981 EW40)
Classification: Main-belt Asteroid          SPK-ID: 2058134
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1608285508004199 4.7089e-08  
a 2.366169718337705 1.0481e-08 au
q 1.985622071589614 1.1044e-07 au
i 10.14489367806363 4.8311e-06 deg
node 353.1815148853657 1.9039e-05 deg
peri 344.9977831665435 2.2148e-05 deg
M 179.5928573848513 1.2692e-05 deg
tp 2458537.285787458585
(2019-Feb-22.78578746)
4.5048e-05 TDB
period 1329.435479737784
3.64
8.8333e-06
2.418e-08
d
yr
n .270791629595297 1.7992e-09 deg/d
Q 2.746717365085796 1.2167e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1189  
   data-arc span      14589 days (39.94 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50114  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 05:42:28  

Additional Information
 Earth MOID = .977168 au 
 Jupiter MOID = 2.64985 au 
 T_jup = 3.509 
[ 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 15.02   n/a E2021B10  
diameter diameter 3.150 km 0.621 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.178   0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58134 (1981 EW40)          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 EW40 = 2001 XR42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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