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 ]  
9538 (1982 UM2)
Classification: Main-belt Asteroid          SPK-ID: 2009538
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389091016219725 2.4573e-07  
a 2.521654571546918 1.3364e-08 AU
q 2.171373800412395 6.2027e-07 AU
i 2.268692608119939 8.2882e-06 deg
node 158.83129379467 0.00018577 deg
peri 250.5394534962791 0.00019999 deg
M 359.1688121008357 6.3228e-05 deg
tp 2457003.876941442434
(2014-Dec-12.37694144)
0.00025688 JED
period 1462.604208384826
4.00
1.1627e-05
3.183e-08
d
yr
n .2461363080566773 1.9567e-09 deg/d
Q 2.87193534268144 1.5221e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1180  
   data-arc span      21864 days (59.86 yr)  
   first obs. used      1954-12-21  
   last obs. used      2014-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5318  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:09:55  

Additional Information
 Earth MOID = 1.18247 AU 
 T_jup = 3.441 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO299031  

9538 (1982 UM2)          Discovered 1982-Oct-20 by Mrkos, A. at Klet (046)
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1982 UM2 = 1986 VH 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Nov-26 17:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin