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 ]  
150657 (2001 EJ21)
Classification: Main-belt Asteroid          SPK-ID: 2150657
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07641258564157401 5.2786e-08  
a 2.230492481515582 8.8701e-09 au
q 2.060054783748886 1.1746e-07 au
i 3.717545765760575 3.7059e-06 deg
node 252.9662437268198 8.7182e-05 deg
peri 249.8434943160622 9.2073e-05 deg
M 354.4257122812647 2.9535e-05 deg
tp 2459219.340240953806
(2021-Jan-04.84024095)
9.9825e-05 TDB
period 1216.745005926753
3.33
7.2581e-06
1.987e-08
d
yr
n .2958713602656624 1.7649e-09 deg/d
Q 2.400930179282279 9.5479e-09 au
  Orbit Determination Parameters
   # obs. used (total)      502  
   data-arc span      8364 days (22.90 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55402  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:19:29  

Additional Information
 Earth MOID = 1.076 au 
 Jupiter MOID = 2.60858 au 
 T_jup = 3.636 
[ 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 16.5   n/a MPO396233  

150657 (2001 EJ21)          Discovered 2001-Mar-15 by LONEOS at Anderson Mesa
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

Alternate Designations
 2001 EJ21 = 2002 PU20 = 2003 YG98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-16 21:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin