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136577 (1981 EN38)
Classification: Outer Main-belt Asteroid          SPK-ID: 2136577
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07967540052134536 5.5118e-08  
a 3.209424724819817 3.2758e-08 au
q 2.95371252442669 1.7376e-07 au
i 12.45263962226933 6.1129e-06 deg
node 197.3798404515498 2.1385e-05 deg
peri 23.85027163794726 3.4583e-05 deg
M 200.4141111941068 2.7864e-05 deg
tp 2459531.460391318426
(2021-Nov-12.96039132)
0.00016633 TDB
period 2100.096339233829
5.75
3.2153e-05
8.803e-08
d
yr
n .1714207073620906 2.6245e-09 deg/d
Q 3.465136925212944 3.5368e-08 au
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      13820 days (37.84 yr)  
   first obs. used      1981-03-01  
   last obs. used      2019-01-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57047  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 05:21:10  

Additional Information
 Earth MOID = 1.95162 au 
 Jupiter MOID = 1.5074 au 
 T_jup = 3.150 
[ 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 14.8   n/a MPO432827  
diameter diameter 5.252 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.084   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136577 (1981 EN38)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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