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 ]  
17393 (1981 EA41)
Classification: Main-belt Asteroid          SPK-ID: 2017393
[ 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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04521680753768836 4.2232e-08  
a 3.135953013612335 2.2988e-08 au
q 2.994155229748593 1.3458e-07 au
i 6.29439671135641 5.5623e-06 deg
node 182.8751983138299 3.6553e-05 deg
peri 316.8068344765898 6.6877e-05 deg
M 60.20839809736734 5.6217e-05 deg
tp 2458661.259793345742
(2019-Jun-26.75979335)		 0.00031605 TDB
period 2028.396008776608
5.55		 2.2304e-05
6.107e-08		 d
yr
n .1774801362467321 1.9515e-09 deg/d
Q 3.277750797476078 2.4028e-08 au
   Orbit Determination Parameters
   # obs. used (total)      918  
   data-arc span      15098 days (41.34 yr)  
   first obs. used      1978-10-03  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55912  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:03:21  

Additional Information
 Earth MOID = 2.01015 au 
 Jupiter MOID = 1.72213 au 
 T_jup = 3.201 
[ 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 14.3   n/a MPO467892  
diameter diameter 7.446 km 0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17393 (1981 EA41)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001013/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-Apr-01 09:46 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin