+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1019 Strackea (A924 ES) Classification: Inner Main-belt Asteroid          SPK-ID: 2001019 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07140982419113824 3.9709e-08   a 1.911701437414846 4.5264e-09 au q 1.775187173863106 7.5855e-08 au i 26.9806427990367 4.9578e-06 deg node 144.397010482244 9.2683e-06 deg peri 121.9790606446843 3.347e-05 deg M 43.59122651440773 3.2832e-05 deg tp 2458883.597145714922 (2020-Feb-04.09714571) 8.7987e-05 TDB period 965.4471990761332 2.64 3.4289e-06 9.388e-09 d yr n .3728841932987069 1.3243e-09 deg/d Q 2.048215700966587 4.8497e-09 au   Orbit Determination Parameters    # obs. used (total)      2290      data-arc span      35226 days (96.44 yr)      first obs. used      1924-02-23      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .316      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:26:38   Additional Information  Earth MOID = .808448 au   Jupiter MOID = 3.135 au   T_jup = 3.799  [ 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 12.5   n/a MPO473776 IRAS observations used: 3 diameter diameter 7.169 km 0.263 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 4.044 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Warner, B.D. (2009) Minor Planet Bull. 36, 172-176.] [Warner, B.D. (2011) Minor Planet Bull. 38, 142-149.] [Warner, B.D. (2014) Minor Planet Bull. 41, 144-155.] [Schmidt, R.E. (2015) Minor Planet Bull. 42, 1-3.] [Stephens, R. D.; Warner, B. D. (2019) MPB 46, 298-301.] geometric albedo albedo 0.305   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.953   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=9.27, mean=18.19, max.=24.73) deg. U-B UB 0.513   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=9.27, mean=18.19, max.=24.73) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices 1019 Strackea (A924 ES)          Discovered 1924-Mar-03 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-26 06:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin