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 ]  
345842 Alexparker (2007 LG31)
Classification: Main-belt Asteroid          SPK-ID: 2345842
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 .07189638272426696 3.012e-07  
a 2.690685841164674 5.8182e-08 au
q 2.497235262137533 7.9815e-07 au
i 5.985086453399557 2.0813e-05 deg
node 72.03235091400332 0.00026265 deg
peri 261.4295854750554 0.00036228 deg
M 2.051563543834872 0.00024529 deg
tp 2457591.312964611270
(2016-Jul-21.81296461)
0.0010982 JED
period 1612.103485598467
4.41
5.2289e-05
1.432e-07
d
yr
n .223310726151278 7.2432e-09 deg/d
Q 2.884136420191815 6.2365e-08 au
  Orbit Determination Parameters
   # obs. used (total)      50  
   data-arc span      5630 days (15.41 yr)  
   first obs. used      1999-12-13  
   last obs. used      2015-05-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51472  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-05 03:56:08  

Additional Information
 Earth MOID = 1.49483 au 
 Jupiter MOID = 2.35499 au 
 T_jup = 3.361 
[ 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 17.3 mag n/a MPO242593  

345842 Alexparker           Discovered 2007 June 12 by D. D. Balam at Mauna Kea.
Alex H. Parker (b. 1987) is an American astronomer whose research on asteroids and trans-neptunian objects has contributed to the understanding of solar system formation and evolution. He is the co-discoverer of several minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-11-17Last Updated: 2014-11-10
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-May-05 06:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin