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 ]  
226173 (2002 TU81)
Classification: Main-belt Asteroid          SPK-ID: 2226173
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1978429835190441 6.2374e-08  
a 2.261873980039063 8.7832e-09 au
q 1.81437808348404 1.4259e-07 au
i 5.86849818061486 4.6041e-06 deg
node 120.0859794100433 7.1529e-05 deg
peri 276.8750031961983 7.4052e-05 deg
M 49.501694580807 1.6075e-05 deg
tp 2458829.648577399055
(2019-Dec-12.14857740)
5.5478e-05 TDB
period 1242.513264590093
3.40
7.2373e-06
1.981e-08
d
yr
n .2897353374483005 1.6876e-09 deg/d
Q 2.709369876594086 1.0521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      313  
   data-arc span      9843 days (26.95 yr)  
   first obs. used      1993-01-25  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54802  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 01:36:37  

Additional Information
 Earth MOID = .832925 au 
 Jupiter MOID = 2.7266 au 
 T_jup = 3.586 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9   n/a MPO396674  

226173 (2002 TU81)          Discovered 2002-Oct-01 by NEAT at Haleakala
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-22 20:24 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin