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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
35020 (1981 EJ12)
Classification: Main-belt Asteroid          SPK-ID: 2035020
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284367361932555 4.7921e-08  
a 3.060091557069792 2.4508e-08 au
q 2.66706338502721 1.454e-07 au
i 4.010087450894706 5.0965e-06 deg
node 271.6174018144679 7.3086e-05 deg
peri 303.0330412739403 7.59e-05 deg
M 85.64240784971382 1.8863e-05 deg
tp 2458535.357067974570
(2019-Feb-20.85706797)
0.00010323 TDB
period 1955.239930000569
5.35
2.3489e-05
6.431e-08
d
yr
n .1841206260552868 2.2119e-09 deg/d
Q 3.453119729112373 2.7656e-08 au
  Orbit Determination Parameters
   # obs. used (total)      574  
   data-arc span      14046 days (38.46 yr)  
   first obs. used      1981-02-12  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56874  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:40:47  

Additional Information
 Earth MOID = 1.66303 au 
 Jupiter MOID = 1.55191 au 
 T_jup = 3.218 
[ 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 14.9   n/a MPO436009  
diameter diameter 5.677 km 0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.079   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35020 (1981 EJ12)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-27 23:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin