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 ]  
120784 (1998 EY20)
Classification: Main-belt Asteroid          SPK-ID: 2120784
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2295339078790261 3.7312e-08  
a 2.618129379930209 1.275e-08 au
q 2.017179912021936 9.5224e-08 au
i 6.36839507857206 4.6358e-06 deg
node 154.2433037993742 2.8776e-05 deg
peri 44.36288794869663 3.0205e-05 deg
M 67.84606263181487 9.2635e-06 deg
tp 2458708.886764547930
(2019-Aug-13.38676455)
3.8784e-05 TDB
period 1547.337615337414
4.24
1.1303e-05
3.095e-08
d
yr
n .2326576930797989 1.6995e-09 deg/d
Q 3.219078847838481 1.5677e-08 au
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      10196 days (27.92 yr)  
   first obs. used      1992-11-17  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58362  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:54:47  

Additional Information
 Earth MOID = 1.02151 au 
 Jupiter MOID = 1.74894 au 
 T_jup = 3.360 
[ 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 15.77   n/a E2021B55  

120784 (1998 EY20)          Discovered 1998-Mar-03 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 EY20 = 2002 AE87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-28 17:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin