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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
52244 (1981 EE4)
Classification: Main-belt Asteroid          SPK-ID: 2052244
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03320709941280059 4.7181e-08  
a 3.176074641914745 2.5048e-08 au
q 3.070606415538207 1.5245e-07 au
i 8.127115657050911 4.103e-06 deg
node 259.5007221820674 3.6104e-05 deg
peri 271.4496039062271 7.1187e-05 deg
M 277.2695162732859 6.1916e-05 deg
tp 2459075.613685496506
(2020-Aug-14.11368550)
0.00035653 TDB
period 2067.447439854773
5.66
2.4457e-05
6.696e-08
d
yr
n .1741277640534784 2.0599e-09 deg/d
Q 3.281542868291283 2.588e-08 au
  Orbit Determination Parameters
   # obs. used (total)      614  
   data-arc span      14158 days (38.76 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55471  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 04:11:08  

Additional Information
 Earth MOID = 2.08993 au 
 Jupiter MOID = 1.78606 au 
 T_jup = 3.184 
[ 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 14.5   n/a MPO426282  

52244 (1981 EE4)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-20 15:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin