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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1730475346746204 1.1921e-07  
a 2.24459997801291 2.9831e-08 au
q 1.856177485487069 2.7761e-07 au
i 6.587955982738555 1.266e-05 deg
node 201.4035909224166 8.0062e-05 deg
peri 125.9869264975548 8.9268e-05 deg
M 346.6787621951827 3.8945e-05 deg
tp 2457445.951575176944
(2016-Feb-27.45157518)
0.00013334 JED
period 1228.30680627762
3.36
2.4486e-05
6.704e-08
d
yr
n .2930863837602422 5.8426e-09 deg/d
Q 2.633022470538751 3.4993e-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 = .852504 au 
 Jupiter MOID = 2.71777 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-Feb-11 13:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin