+ View the NASA Portal + Center for Near-Earth Object Studies 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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4475276833931515 2.7571e-08   a 2.604436373432279 7.1855e-09 au q 1.43887899668527 7.3192e-08 au i 6.505565489023386 4.0147e-06 deg node 174.8892282575789 3.1035e-05 deg peri 136.9451773290341 3.1335e-05 deg M 278.6341854862508 3.8042e-06 deg tp 2459547.483265969826 (2021-Nov-28.98326597) 1.6748e-05 TDB period 1535.21446931536 4.20 6.3534e-06 1.739e-08 d yr n .2344949238008058 9.7044e-10 deg/d Q 3.769993750179287 1.0401e-08 au   Orbit Determination Parameters    # obs. used (total)      1366      data-arc span      41082 days (112.48 yr)      first obs. used      1908-09-22      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50474      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:24:49   Additional Information  Earth MOID = .432841 au   Jupiter MOID = 1.59697 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 14.32   n/a E2021B10   rotation period rot_per 3.391 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Salvaggio, F.; Marchini, A.; Papini, R. (2017) Minor Planet Bull. 44, 354-355.] [Aznar, A.M.; 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.arc Last 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 ] 2021-Apr-20 08:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin