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37553 (1981 EN43)
Classification: Main-belt Asteroid          SPK-ID: 2037553
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09719832967947198 5.3932e-08  
a 3.056311306684623 2.7241e-08 au
q 2.759242952694393 1.7727e-07 au
i 10.56626292475321 5.3178e-06 deg
node 4.625535712403392 2.5768e-05 deg
peri 11.15350375473156 3.7256e-05 deg
M 282.6433778521103 2.9475e-05 deg
tp 2459419.862705875335
(2021-Jul-24.36270588)
0.0001628 TDB
period 1951.617973009426
5.34
2.6092e-05
7.144e-08
d
yr
n .1844623307321127 2.4662e-09 deg/d
Q 3.353379660674852 2.9889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      877  
   data-arc span      14368 days (39.34 yr)  
   first obs. used      1981-02-13  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52581  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 20:48:03  

Additional Information
 Earth MOID = 1.76065 au 
 Jupiter MOID = 2.11567 au 
 T_jup = 3.202 
[ 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 14.4   n/a MPO347792  
diameter diameter 5.572 km 0.247 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.157   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37553 (1981 EN43)          Discovered 1981-Mar-03 by Bus, S. J. at Siding Spring
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EN43 = 2000 XP20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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