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52243 (1981 ED3)
Classification: Main-belt Asteroid          SPK-ID: 2052243
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1864166331012488 4.2162e-08  
a 3.189260653044133 2.6081e-08 au
q 2.594729420021356 1.3796e-07 au
i 12.16668061028116 5.7471e-06 deg
node 210.8839655012545 2.3849e-05 deg
peri 251.1036819979994 2.9714e-05 deg
M 10.16149212075173 1.5417e-05 deg
tp 2458941.779677360753
(2020-Apr-02.27967736)
8.9015e-05 TDB
period 2080.335830498574
5.70
2.5519e-05
6.987e-08
d
yr
n .1730489831123672 2.1227e-09 deg/d
Q 3.78379188606691 3.0943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      509  
   data-arc span      14237 days (38.98 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56131  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:24:32  

Additional Information
 Earth MOID = 1.64239 au 
 Jupiter MOID = 1.67322 au 
 T_jup = 3.135 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457024.5 (2015-Jan-02.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1868253518408969 4.2366e-08  
q 2.594488526503058 1.3929e-07 au
tp 2456866.741589572090
(2014-Jul-28.24158957)
8.9769e-05 TDB
node 210.9307505608388 2.387e-05 deg
peri 251.7604897656122 2.9667e-05 deg
i 12.15926855790655 5.7446e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      509  
   data-arc span      14237 days (38.98 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56131  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:24:32  

Additional Information
 Jupiter MOID = 1.67322 au 
 T_jup = 3.135 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.794851694101669E-15 -5.831870931604149E-15 3.956828315836522E-13 5.551340658621006E-15 9.751116063407664E-14 -4.141002207936865E-15
q -5.831870931604149E-15 1.940111717732259E-14 -1.68109428114296E-12 -1.653207577408809E-14 -3.802008280166743E-13 1.319542269882129E-14
tp 3.956828315836522E-13 -1.68109428114296E-12 8.058518560113422E-9 -2.87780289719977E-11 1.609086408854186E-9 1.248591163712485E-12
node 5.551340658621006E-15 -1.653207577408809E-14 -2.87780289719977E-11 5.697772459826354E-10 -5.621056478439196E-10 -1.939521978521122E-11
peri 9.751116063407664E-14 -3.802008280166743E-13 1.609086408854186E-9 -5.621056478439196E-10 8.801286084427793E-10 1.918117022745821E-11
i -4.141002207936865E-15 1.319542269882129E-14 1.248591163712485E-12 -1.939521978521122E-11 1.918117022745821E-11 3.300094915812253E-11

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 15.0   n/a MPO452880  
diameter diameter 5.129 km 0.531 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52243 (1981 ED3)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 ED3 = 1995 SG28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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