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 ]  
120781 (1998 EL11)
Classification: Main-belt Asteroid          SPK-ID: 2120781
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .2357022998658006 3.5804e-08  
a 2.621288575369743 1.5024e-08 au
q 2.003444829543147 8.9935e-08 au
i 5.739467620466071 4.2237e-06 deg
node 38.4204927036322 5.3854e-05 deg
peri 191.1715101332101 5.5101e-05 deg
M 93.31475913572901 1.2481e-05 deg
tp 2458798.692057164048
(2019-Nov-11.19205716)		 5.2777e-05 TDB
period 1550.139128693929
4.24		 1.3327e-05
3.649e-08		 d
yr
n .2322372187993978 1.9966e-09 deg/d
Q 3.23913232119634 1.8566e-08 au
   Orbit Determination Parameters
   # obs. used (total)      669  
   data-arc span      8319 days (22.78 yr)  
   first obs. used      1998-03-01  
   last obs. used      2020-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:25:53  

Additional Information
 Earth MOID = .99253 au 
 Jupiter MOID = 1.75497 au 
 T_jup = 3.358 
[ 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 15.7   n/a MPO432708  

120781 (1998 EL11)          Discovered 1998-Mar-01 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 EL11 = 2002 CH31 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-03 19:32 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin