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 ]  
249956 (2001 UM8)
Classification: Main-belt Asteroid          SPK-ID: 2249956
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1091035417603654 4.753e-08  
a 2.75596169038883 1.9403e-08 au
q 2.455276509011525 1.347e-07 au
i 4.641946802759761 4.9155e-06 deg
node 51.63592483907106 6.528e-05 deg
peri 298.5269660119079 6.953e-05 deg
M 330.7766595690189 2.2394e-05 deg
tp 2458736.154919465880
(2019-Sep-09.65491947)
0.00010402 TDB
period 1671.12213345547
4.58
1.7648e-05
4.832e-08
d
yr
n .2154241110167145 2.275e-09 deg/d
Q 3.056646871766135 2.152e-08 au
  Orbit Determination Parameters
   # obs. used (total)      280  
   data-arc span      9826 days (26.90 yr)  
   first obs. used      1992-11-27  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57285  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:49:07  

Additional Information
 Earth MOID = 1.45278 au 
 Jupiter MOID = 2.35222 au 
 T_jup = 3.330 
[ 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 16.3   n/a MPO450109  

249956 (2001 UM8)          Discovered 2001-Oct-17 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-16 11:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin