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
JPL Small-Body Database Browser
Search: [ help ]  
312871 (2011 UL161)
Classification: Main-belt Asteroid          SPK-ID: 2312871
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1188561545626145 1.0104e-07  
a 3.069621508682002 4.897e-08 au
q 2.704778100197369 3.1223e-07 au
i 3.200855633343805 8.8497e-06 deg
node 348.6066150517558 0.00013684 deg
peri 34.73827686993859 0.00014031 deg
M 239.7069386855084 3.1649e-05 deg
tp 2459656.892707367252
(2022-Mar-18.39270737)
0.00017935 TDB
period 1964.380755382302
5.38
4.7007e-05
1.287e-07
d
yr
n .1832638601318092 4.3854e-09 deg/d
Q 3.434464917166637 5.479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      135  
   data-arc span      4965 days (13.59 yr)  
   first obs. used      2005-08-29  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52463  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:24:08  

Additional Information
 Earth MOID = 1.70879 au 
 Jupiter MOID = 2.03402 au 
 T_jup = 3.218 
[ 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 MPO434005  

312871 (2011 UL161)          Discovered 2005-Aug-29 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-05 21:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin