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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
90499 (2004 EC2)
Classification: Main-belt Asteroid          SPK-ID: 2090499
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1286696931874533 3.8414e-08  
a 2.295430274349139 8.1899e-09 au
q 2.000077965215443 8.9923e-08 au
i 3.57979792355239 3.7136e-06 deg
node 80.84993747631957 6.0693e-05 deg
peri 101.1083913479772 6.2391e-05 deg
M 352.8257762513339 1.5238e-05 deg
tp 2459421.814362869886
(2021-Jul-26.31436287)
5.3825e-05 TDB
period 1270.265739182375
3.48
6.7983e-06
1.861e-08
d
yr
n .2834052662332838 1.5168e-09 deg/d
Q 2.590782583482834 9.2437e-09 au
  Orbit Determination Parameters
   # obs. used (total)      932  
   data-arc span      9311 days (25.49 yr)  
   first obs. used      1995-10-21  
   last obs. used      2021-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53097  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:38:18  

Additional Information
 Earth MOID = 1.00702 au 
 Jupiter MOID = 2.36834 au 
 T_jup = 3.582 
[ 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 16.22   n/a MPCxxxxx  

90499 (2004 EC2)          Discovered 2004-Mar-12 by NEAT at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 2004 EC2 = 2000 AB21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-21 01:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin