+ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07140984196465322 3.517e-08   a 1.911701435893649 4.252e-09 au q 1.775187138472883 6.6397e-08 au i 26.98064254997777 4.6718e-06 deg node 144.3970121664532 8.315e-06 deg peri 121.979060053002 3.2969e-05 deg M 43.59122793823308 3.2699e-05 deg tp 2458883.597142036045 (2020-Feb-04.09714204) 8.7636e-05 TDB period 965.4471979237807 2.64 3.221e-06 8.819e-09 d yr n .3728841937437795 1.2441e-09 deg/d Q 2.048215733314414 4.5557e-09 au   Orbit Determination Parameters    # obs. used (total)      2485      data-arc span      35331 days (96.73 yr)      first obs. used      1924-02-23      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .31383      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:57:44   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. 2020-October); 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.] [Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] 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 ] 2021-Jan-23 20:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin