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58136 (1981 EV42)
Classification: Main-belt Asteroid          SPK-ID: 2058136
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1596184937098866 4.5906e-08  
a 2.361451536400902 1.2952e-08 au
q 1.984520199191693 1.0803e-07 au
i 8.289459722609532 5.3819e-06 deg
node 358.9896492022136 3.4532e-05 deg
peri 287.7907152453821 3.8288e-05 deg
M 201.8226346067674 1.6055e-05 deg
tp 2459582.883174447922
(2022-Jan-03.38317445)
6.0023e-05 TDB
period 1325.461087811377
3.63
1.0904e-05
2.985e-08
d
yr
n .2716035976540344 2.2345e-09 deg/d
Q 2.738382873610111 1.5019e-08 au
  Orbit Determination Parameters
   # obs. used (total)      812  
   data-arc span      14235 days (38.97 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5377  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:23:42  

Additional Information
 Earth MOID = .987433 au 
 Jupiter MOID = 2.47567 au 
 T_jup = 3.520 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456705.5 (2014-Feb-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1601181373784356 4.588e-08  
q 1.982740317139363 1.0801e-07 au
tp 2456932.927044946553
(2014-Oct-02.42704495)
5.8817e-05 TDB
node 359.0281346698577 3.4507e-05 deg
peri 287.9243863696146 3.8249e-05 deg
i 8.294140877430889 5.3842e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      812  
   data-arc span      14235 days (38.97 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5377  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:23:42  

Additional Information
 Jupiter MOID = 2.47567 au 
 T_jup = 3.520 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.104956166753612E-15 -4.930708553313173E-15 3.693092488735254E-13 4.649815785188921E-15 1.312119840857092E-13 -2.112737971879248E-15
q -4.930708553313173E-15 1.16668919497013E-14 -9.635637130336629E-13 -1.047357383784994E-14 -3.387306116782019E-13 5.31279994498051E-15
tp 3.693092488735254E-13 -9.635637130336629E-13 3.45942944658682E-9 -2.027311151823526E-11 9.927563705601071E-10 3.72157367711568E-12
node 4.649815785188921E-15 -1.047357383784994E-14 -2.027311151823526E-11 1.190765006672497E-9 -1.1829620813895E-9 -2.695403654795031E-11
peri 1.312119840857092E-13 -3.387306116782019E-13 9.927563705601071E-10 -1.1829620813895E-9 1.462965092130035E-9 2.766132063195465E-11
i -2.112737971879248E-15 5.31279994498051E-15 3.72157367711568E-12 -2.695403654795031E-11 2.766132063195465E-11 2.898923638163043E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO452959  
diameter diameter 2.055 km 0.562 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.200   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58136 (1981 EV42)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EV42 = 2000 QR54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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