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
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 ]  
14309 Defoy (A908 SA)
Classification: Mars-crossing Asteroid          SPK-ID: 2014309
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4470853386584498 2.8022e-08  
a 2.605560082085917 7.6707e-09 au
q 1.440652370391597 7.4408e-08 au
i 6.502185661322099 4.299e-06 deg
node 174.9079931341687 3.6643e-05 deg
peri 136.8825867834511 3.7124e-05 deg
M 138.0614725980729 4.1219e-06 deg
tp 2458011.357890294036
1.7788e-05 TDB
period 1536.208150637294
n .2343432430368597 1.0349e-09 deg/d
Q 3.770467793780238 1.11e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1218  
   data-arc span      40285 days (110.29 yr)  
   first obs. used      1908-09-22  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5147  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:26:32  

Additional Information
 Earth MOID = .435685 au 
 Jupiter MOID = 1.5934 au 
 T_jup = 3.255 
[ 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 MPO267763  
rotation period rot_per 3.391 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Salvaggio, F.; Marchini, A.; Papini, R. (2017) Minor Planet Bull. 44, 354-355.]
[Aznar Macias, A.; Cornea, R.; Suciu, O. (2018) Minor Planet Bull. 45, 92-96.]
[Owings, L.E. (2018) Minor Planet Bull. 45, 227-231.]
[Tomassini, A.; Scardella, M.; Franceschini, F.; Pierri, F. (2018) Minor Planet Bull. 45, 11-13.]

14309 Defoy           Discovered 1908 Sept. 22 by J. Palisa at Vienna.
Until 1580 the ancestors of the Defoy family were landowners at Foy, near Bastogne, now in Belgium. This minor planet specifically honors Ilse Defoy (1892-1947), wife of Christoph Schubart and mother of Heidelberg astronomer Joachim Schubart, who found the identifications involving this minor planet.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 A908 SA = 1992 SU1 = 1992 UW6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2019-Oct-19 11:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin