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52248 (1981 EE15)
Classification: Main-belt Asteroid          SPK-ID: 2052248
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06802350537709832 5.0254e-08  
a 2.784516089574558 2.1969e-08 au
q 2.595103544382767 1.4025e-07 au
i 5.029594475937246 5.321e-06 deg
node 283.3045142818897 6.0419e-05 deg
peri 253.5763081972134 7.1521e-05 deg
M 161.0661249961434 3.9863e-05 deg
tp 2458241.180183728203
(2018-May-02.68018373)
0.00018565 TDB
period 1697.1609260755
4.65
2.0085e-05
5.499e-08
d
yr
n .2121189537591234 2.5104e-09 deg/d
Q 2.97392863476635 2.3464e-08 au
  Orbit Determination Parameters
   # obs. used (total)      504  
   data-arc span      14417 days (39.47 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60786  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 04:53:47  

Additional Information
 Earth MOID = 1.60489 au 
 Jupiter MOID = 2.02884 au 
 T_jup = 3.323 
[ 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 15.4   n/a MPO436150  
diameter diameter 4.406 km 0.489 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52248 (1981 EE15)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EE15 = 1998 WH27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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