Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
52248 (1981 EE15)
Classification: Main-belt Asteroid          SPK-ID: 2052248
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06819891606020799 5.019e-08  
a 2.784063159103792 1.9043e-08 au
q 2.594193069409755 1.3996e-07 au
i 5.02958977135867 3.8996e-06 deg
node 283.3037202278542 6.0076e-05 deg
peri 253.4499749536128 6.8896e-05 deg
M 203.6412679204957 3.7598e-05 deg
tp 2459937.447739946528
(2022-Dec-23.94773995)
0.00018151 TDB
period 1696.746851629952
4.65
1.7409e-05
4.766e-08
d
yr
n .2121707193115885 2.1769e-09 deg/d
Q 2.973933248797828 2.0342e-08 au
  Orbit Determination Parameters
   # obs. used (total)      607  
   data-arc span      14575 days (39.90 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58029  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:43:48  

Additional Information
 Earth MOID = 1.60356 au 
 Jupiter MOID = 2.02788 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 15.48   n/a E2021B10  
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-24 19:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin