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 ]  
154137 (2002 ET122)
Classification: Main-belt Asteroid          SPK-ID: 2154137
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1185301497390289 4.3076e-08  
a 3.157028572057477 3.3879e-08 au
q 2.782825502681112 1.4573e-07 au
i 5.519989585161126 6.998e-06 deg
node 348.1347775067511 4.9604e-05 deg
peri 288.4027014379517 5.8308e-05 deg
M 359.6221908121739 3.1775e-05 deg
tp 2459002.650236402061
(2020-Jun-02.15023640)
0.00018085 TDB
period 2048.878454215958
5.61
3.298e-05
9.029e-08
d
yr
n .1757058839967941 2.8283e-09 deg/d
Q 3.531231641433842 3.7894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      6262 days (17.14 yr)  
   first obs. used      2002-03-12  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56464  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:28:30  

Additional Information
 Earth MOID = 1.77303 au 
 Jupiter MOID = 1.64162 au 
 T_jup = 3.188 
[ 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 15.0   n/a MPO432983  

154137 (2002 ET122)          Discovered 2002-Mar-12 by LONEOS at Anderson Mesa
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ 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-Feb-17 22:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin