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 ]  
46419 (2002 JO21)
Classification: Main-belt Asteroid          SPK-ID: 2046419
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516910293519774 5.6885e-08  
a 2.289356466380849 1.3528e-08 au
q 1.942081627441933 1.3486e-07 au
i 7.101306124781182 5.4196e-06 deg
node 102.0254345091804 5.1441e-05 deg
peri 156.4597027863612 5.7284e-05 deg
M 55.39131940485437 3.0764e-05 deg
tp 2458805.826083422079
(2019-Nov-18.32608342)
0.00010698 TDB
period 1265.227308557477
3.46
1.1214e-05
3.07e-08
d
yr
n .2845338521901229 2.522e-09 deg/d
Q 2.636631305319766 1.558e-08 au
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      14954 days (40.94 yr)  
   first obs. used      1978-07-07  
   last obs. used      2019-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60494  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:27:53  

Additional Information
 Earth MOID = .928954 au 
 Jupiter MOID = 2.42748 au 
 T_jup = 3.574 
[ 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 16.0   n/a MPO351161  

46419 (2002 JO21)          Discovered 2002-May-09 by Yeung, W. K. Y. at Desert Eagle
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 JO21 = 1978 NW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-08 02:37 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin