+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   784 Pickeringia (A914 FC) Classification: Main-belt Asteroid          SPK-ID: 2000784 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2423295620279469 3.3323e-08   a 3.095632320885486 1.2726e-08 au q 2.34546909636575 1.0376e-07 au i 12.28367518233552 4.4626e-06 deg node 14.91747237118953 1.9193e-05 deg peri 238.012731476618 2.1342e-05 deg M 97.35388782805526 1.0484e-05 deg tp 2458462.511138122061 (2018-Dec-10.01113812) 5.6806e-05 TDB period 1989.401703382664 5.45 1.2268e-05 3.359e-08 d yr n .1809589281983004 1.1159e-09 deg/d Q 3.845795545405223 1.581e-08 au   Orbit Determination Parameters    # obs. used (total)      2930      data-arc span      38791 days (106.20 yr)      first obs. used      1914-03-29      last obs. used      2020-06-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45085      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:20:37   Additional Information  Earth MOID = 1.35927 au   Jupiter MOID = 1.38826 au   T_jup = 3.143  [ hide covariance matrix ] Orbital Elements at Epoch 2456020.5 (2012-Apr-03.0) TDB Reference: JPL 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2415112370557445 3.3256e-08   q 2.348776296779325 1.0359e-07 au tp 2456474.722404090561 (2013-Jul-01.22240409) 5.4826e-05 TDB node 14.96075495215739 1.9174e-05 deg peri 238.5111232238331 2.1342e-05 deg i 12.28869217831682 4.4639e-06 deg   Orbit Determination Parameters    # obs. used (total)      2930      data-arc span      38791 days (106.20 yr)      first obs. used      1914-03-29      last obs. used      2020-06-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45085      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:20:37   Additional Information  Jupiter MOID = 1.38826 au   T_jup = 3.143  Orbit Covariance (6×6)   e q tp node peri i e 1.105928801592002E-15 -3.429625533510023E-15 -7.168696365183156E-14 -5.84118549313998E-16 -6.243930339152475E-15 9.727484232803021E-16 q -3.429625533510023E-15 1.073070901473271E-14 2.580038855607182E-13 8.465104297214582E-16 2.024445382054873E-14 -2.370781007220933E-15 tp -7.168696365183156E-14 2.580038855607182E-13 3.005901832853639E-9 -4.274081066733873E-12 5.363227708186748E-10 9.172863366467003E-13 node -5.84118549313998E-16 8.465104297214582E-16 -4.274081066733873E-12 3.676276084035237E-10 -3.593398170395333E-10 -1.022473152631268E-11 peri -6.243930339152475E-15 2.024445382054873E-14 5.363227708186748E-10 -3.593398170395333E-10 4.554631769573574E-10 1.015201145330752E-11 i 9.727484232803021E-16 -2.370781007220933E-15 9.172863366467003E-13 -1.022473152631268E-11 1.015201145330752E-11 1.992619428587256E-11 [ 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 9.3   n/a MPO452168   diameter diameter 75.596 km 0.311 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 13.144 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Hainaut-Rouelle, M.-C.; Hainaut, O.R.; Detal, A. (1995) Astron. Astrophys. Suppl. Ser. 112, 125-142.] [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Mas, V.; Fornas, G.; Lozano, J.; Rodrigo, O.; et al. (2018) Minor Planet Bull. 45, 76-82.] geometric albedo albedo 0.086   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 784 Pickeringia (A914 FC)          Discovered 1914-Mar-20 by Metcalf, J. H. at Winchester Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-15 04:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin