Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
346261 Alexandrescu (2008 EK145)
Classification: Main-belt Asteroid          SPK-ID: 2346261
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1730957869384762 1.1917e-07  
a 2.244673972383498 2.9968e-08 au
q 1.856130364713461 2.7762e-07 au
i 6.588236118873697 1.266e-05 deg
node 201.4021095631522 8.0056e-05 deg
peri 125.9655837553951 8.926e-05 deg
M 45.30921514191052 3.9545e-05 deg
tp 2457445.898974047383
(2016-Feb-27.39897405)
0.00013332 JED
period 1228.367544408432
3.36
2.46e-05
6.735e-08
d
yr
n .2930718917466776 5.8692e-09 deg/d
Q 2.633217580053535 3.5156e-08 au
  Orbit Determination Parameters
   # obs. used (total)      82  
   data-arc span      4693 days (12.85 yr)  
   first obs. used      2002-07-20  
   last obs. used      2015-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52258  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-05 03:56:55  

Additional Information
 Earth MOID = .853744 au 
 Jupiter MOID = 2.71867 au 
 T_jup = 3.603 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.1 mag n/a MPO339110  

346261 Alexandrescu           Discovered 2008 Mar. 12 by EURONEAR at the European Southern Observatory.
Harald Alexandrescu (1945-2005) was a Romanian astronomer, renowned for his public outreach activity. A specialist in celestial mechanics, geodesy and satellites, he worked at the Astronomical Institute, the Institute of Geodesy and founded the Institute of Gravitation and Space Sciences in Bucharest.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20130127/MPCPages.arcLast Updated: 2013-01-31

Alternate Designations
 2008 EK145 = 2009 RV44 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Apr-30 05:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin