+ 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 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2423295653955485 3.2273e-08   a 3.095632319626767 1.2253e-08 au q 2.345469084987199 9.9822e-08 au i 12.28367590360757 4.3515e-06 deg node 14.9174657817762 1.6993e-05 deg peri 238.0127393656912 1.911e-05 deg M 97.35388714581967 1.0338e-05 deg tp 2458462.511142220303 (2018-Dec-10.01114222) 5.582e-05 TDB period 1989.401702169293 5.45 1.1812e-05 3.234e-08 d yr n .1809589283086704 1.0744e-09 deg/d Q 3.845795554266335 1.5223e-08 au   Orbit Determination Parameters    # obs. used (total)      3277      data-arc span      38950 days (106.64 yr)      first obs. used      1914-03-29      last obs. used      2020-11-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43013      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:56:07   Additional Information  Earth MOID = 1.35927 au   Jupiter MOID = 1.38826 au   T_jup = 3.143  [ hide covariance matrix ] Orbital Elements at Epoch 2456418.5 (2013-May-06.0) TDB Reference: JPL 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2416725551872611 3.218e-08   q 2.34936579582626 9.9557e-08 au tp 2456474.417826987743 (2013-Jun-30.91782699) 5.2968e-05 TDB node 14.96142124002707 1.6978e-05 deg peri 238.4183322955614 1.9117e-05 deg i 12.28649409361045 4.3519e-06 deg   Orbit Determination Parameters    # obs. used (total)      3277      data-arc span      38950 days (106.64 yr)      first obs. used      1914-03-29      last obs. used      2020-11-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43013      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:56:07   Additional Information  Jupiter MOID = 1.38826 au   T_jup = 3.143  Orbit Covariance (6×6)   e q tp node peri i e 1.03557537010867E-15 -3.189649827510976E-15 -1.899274762881656E-13 -3.079561295753962E-16 -3.800263732282418E-14 9.219671882079131E-16 q -3.189649827510976E-15 9.911683563010175E-15 6.64588634165895E-13 4.676553509426628E-16 1.286926217453083E-13 -2.316390770274781E-15 tp -1.899274762881656E-13 6.64588634165895E-13 2.805652806766936E-9 -3.508081895520012E-12 4.821157803415819E-10 6.973591575137406E-13 node -3.079561295753962E-16 4.676553509426628E-16 -3.508081895520012E-12 2.882385342081751E-10 -2.817836044767773E-10 -1.567795197944033E-12 peri -3.800263732282418E-14 1.286926217453083E-13 4.821157803415819E-10 -2.817836044767773E-10 3.65446734510673E-10 1.664624315598379E-12 i 9.219671882079131E-16 -2.316390770274781E-15 6.973591575137406E-13 -1.567795197944033E-12 1.664624315598379E-12 1.893944550041585E-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. 2020-October); 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 ] 2021-Jan-28 00:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin