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 ]  
233920 (2009 SD161)
Classification: Main-belt Asteroid          SPK-ID: 2233920
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .258870033837423 7.818e-08  
a 2.631421940234906 2.8779e-08 au
q 1.950225653525759 2.1e-07 au
i 5.838534357289152 8.0475e-06 deg
node 200.5734921053564 6.0668e-05 deg
peri 155.6961804917696 6.1428e-05 deg
M 109.4939242568825 1.4097e-05 deg
tp 2458126.288933894913
(2018-Jan-07.78893390)
5.5687e-05 TDB
period 1559.136590970257
4.27
2.5578e-05
7.003e-08
d
yr
n .2308970247282635 3.7879e-09 deg/d
Q 3.312618226944054 3.6229e-08 au
  Orbit Determination Parameters
   # obs. used (total)      206  
   data-arc span      9555 days (26.16 yr)  
   first obs. used      1992-11-29  
   last obs. used      2019-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50677  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:33:07  

Additional Information
 Earth MOID = .947143 au 
 Jupiter MOID = 2.15157 au 
 T_jup = 3.344 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO454692  
diameter diameter 3.398 km 0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233920 (2009 SD161)          Discovered 2009-Sep-21 by La Sagra at La Sagra
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

Alternate Designations
 2009 SD161 = 2008 KB8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-08 18:37 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin