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 ]  
390924 (2005 ET256)
Classification: Main-belt Asteroid          SPK-ID: 2390924
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1535141438176183 1.6525e-07  
a 2.760323051876386 4.3675e-08 au
q 2.336574421907547 4.4294e-07 au
i 3.902786721394659 1.1891e-05 deg
node 341.7077425552822 9.8449e-05 deg
peri 161.8397360104276 0.00013199 deg
M 58.11132736287432 7.0008e-05 deg
tp 2458330.106286595966
(2018-Jul-30.60628660)
0.00032257 TDB
period 1675.090576018079
4.59
3.9756e-05
1.088e-07
d
yr
n .2149137516227747 5.1007e-09 deg/d
Q 3.184071681845225 5.038e-08 au
  Orbit Determination Parameters
   # obs. used (total)      74  
   data-arc span      5192 days (14.21 yr)  
   first obs. used      2005-03-11  
   last obs. used      2019-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6829  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:07:30  

Additional Information
 Earth MOID = 1.3498 au 
 Jupiter MOID = 1.83154 au 
 T_jup = 3.321 
[ 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 17.4   n/a MPO288694  

390924 (2005 ET256)          Discovered 2005-Mar-11 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

[ 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-Jan-17 13:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin