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 ]  
(2018 EG4)
Classification: Centaur          SPK-ID: 3801931
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458185.5 (2018-Mar-08.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6660072109718748 0.026842  
a 13.14905136702224 0.81625 au
q 4.39168833914584 0.080844 au
i 17.3896115500026 0.32035 deg
node 28.99629495563953 0.82014 deg
peri 100.6349537292419 3.3567 deg
M 5.787364525571243 0.48768 deg
tp 2457905.525552082455
(2017-Jun-01.02555208)
23.068 TDB
period 17415.6649032519
47.68
1621.7
4.44
d
yr
n .02067104540652822 0.0019248 deg/d
Q 21.90641439489863 1.3599 au
  Orbit Determination Parameters
   # obs. used (total)      15  
   data-arc span      9 days  
   first obs. used      2018-03-07  
   last obs. used      2018-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .39973  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:24:14  

Additional Information
 Earth MOID = 3.46213 au 
 Jupiter MOID = .375356 au 
 T_jup = 2.659 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e .0007204878746598616 -.002159234514139861 -.3218844981762615 .01230789988246918 -.07950051572206171 -.004548633886086595
q -.002159234514139861 .006535685139358849 .8067710605199798 -.04233843806278535 .2256108747636743 .01581189748436155
tp -.3218844981762615 .8067710605199798 532.1320932478377 7.899053479751084 66.64349814580352 -3.324494973247471
node .01230789988246918 -.04233843806278535 7.899053479751084 .6726237336226459 -.2843978867161923 -.2625610383176264
peri -.07950051572206171 .2256108747636743 66.64349814580352 -.2843978867161923 11.26745547717545 .07262285226712743
i -.004548633886086595 .01581189748436155 -3.324494973247471 -.2625610383176264 .07262285226712743 .1026241485867518

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO439040  
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-17 03:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin