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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07641258020206504 5.2417e-08  
a 2.230492482790426 8.729e-09 au
q 2.060054797059099 1.1646e-07 au
i 3.71754520330645 3.5351e-06 deg
node 252.9662428482417 8.7141e-05 deg
peri 249.8434991501958 9.1904e-05 deg
M 354.4257072296123 2.8843e-05 deg
tp 2459219.340258043771
(2021-Jan-04.84025804)
9.7481e-05 TDB
period 1216.745006969903
3.33
7.1426e-06
1.956e-08
d
yr
n .2958713600120035 1.7368e-09 deg/d
Q 2.400930168521752 9.396e-09 au
  Orbit Determination Parameters
   # obs. used (total)      525  
   data-arc span      8389 days (22.97 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54554  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:39:39  

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 16.65   n/a MPCxxxxx  

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-May-06 07:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin