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 ]  
461426 (2001 UN209)
Classification: Main-belt Asteroid          SPK-ID: 2461426
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1776909905051059 1.6527e-07  
a 2.691800675838031 5.8988e-08 au
q 2.213491947506057 4.7006e-07 au
i 13.02063294996467 1.2545e-05 deg
node 222.2142608678278 7.3817e-05 deg
peri 173.1421761132153 0.00015291 deg
M 338.3651637022743 0.00012663 deg
tp 2458697.442426546037
(2019-Aug-01.94242655)
0.00056992 TDB
period 1613.105506152684
4.42
5.3025e-05
1.452e-07
d
yr
n .2231720111467559 7.3359e-09 deg/d
Q 3.170109404170004 6.947e-08 au
  Orbit Determination Parameters
   # obs. used (total)      33  
   data-arc span      5258 days (14.40 yr)  
   first obs. used      2001-10-12  
   last obs. used      2016-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44733  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 09:04:16  

Additional Information
 Earth MOID = 1.2207 au 
 Jupiter MOID = 2.25555 au 
 T_jup = 3.312 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.2   n/a MPO322112  

461426 (2001 UN209)          Discovered 2001-Oct-20 by NEAT at Palomar
Reference: Last Updated: 2016-03-24

Alternate Designations
 2001 UN209 = 2010 VD155 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Oct-16 10:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin