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 ]  
528381 (2008 ST291)
Classification: TransNeptunian Object          SPK-ID: 2528381
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5764590794976105 0.00012625  
a 99.885278038393 0.023362 au
q 42.30550260501808 0.0043305 au
i 20.75800371362422 0.0001603 deg
node 330.9707893901831 0.00040864 deg
peri 324.6515438455514 0.0065339 deg
M 23.34892344015343 0.0095868 deg
tp 2434951.378555320487
(1954-Jul-27.87855532)		 1.4188 TDB
period 364628.53381255
998.30		 127.93
0.3503		 d
yr
n .0009873061667331569 3.4638e-07 deg/d
Q 157.4650534717679 0.03683 au
   Orbit Determination Parameters
   # obs. used (total)      85  
   data-arc span      3385 days (9.27 yr)  
   first obs. used      2008-09-24  
   last obs. used      2017-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .50875  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 11:03:14  

Additional Information
 Earth MOID = 41.311 au 
 Jupiter MOID = 37.2831 au 
 T_jup = 6.748 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 4.4   n/a E2018X68  

528381 (2008 ST291)          Discovered 2008-Sep-24 by Schwamb, M. E., Brown, M. E., Rabinowitz, D. L. at Palomar
Reference: Last Updated: 2019-05-29
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin