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 ]  
79104 (1981 EK33)
Classification: Main-belt Asteroid          SPK-ID: 2079104
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04035775710438062 5.0867e-08  
a 2.7770479427268 2.0975e-08 au
q 2.664972516387012 1.3672e-07 au
i 5.131057204135725 4.7339e-06 deg
node 292.2255271553449 7.5791e-05 deg
peri 355.8097353133591 0.00011551 deg
M 60.53854931826822 8.8124e-05 deg
tp 2458716.248344953638
(2019-Aug-20.74834495)
0.00041339 TDB
period 1690.337759478004
4.63
1.9151e-05
5.243e-08
d
yr
n .2129751867527187 2.4129e-09 deg/d
Q 2.889123369066589 2.1822e-08 au
  Orbit Determination Parameters
   # obs. used (total)      466  
   data-arc span      14482 days (39.65 yr)  
   first obs. used      1981-03-01  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:24:25  

Additional Information
 Earth MOID = 1.64865 au 
 Jupiter MOID = 2.19816 au 
 T_jup = 3.328 
[ 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 15.6   n/a MPO432340  

79104 (1981 EK33)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1981 EK33 = 2001 SA81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-30 02:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin