+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1196 Sheba (1931 KE) Classification: Main-belt Asteroid          SPK-ID: 2001196 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1794718863909226 3.8781e-08   a 2.653605433769007 9.6808e-09 au q 2.177357860833281 1.0215e-07 au i 17.66717133273501 4.4753e-06 deg node 100.7578478413403 1.378e-05 deg peri 262.6279655012075 1.8557e-05 deg M 111.646238704194 1.3966e-05 deg tp 2458510.840094580563 (2019-Jan-27.34009458) 6.04e-05 TDB period 1578.893906296688 4.32 8.6401e-06 2.366e-08 d yr n .2280077201921589 1.2477e-09 deg/d Q 3.129853006704733 1.1418e-08 au   Orbit Determination Parameters    # obs. used (total)      2931      data-arc span      39749 days (108.83 yr)      first obs. used      1912-01-19      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .36835      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:59:02   Additional Information  Earth MOID = 1.25462 au   Jupiter MOID = 2.48922 au   T_jup = 3.300  [ hide covariance matrix ] Orbital Elements at Epoch 2456467.5 (2013-Jun-24.0) TDB Reference: JPL 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1799737139392826 3.9049e-08   q 2.175801745979582 1.0304e-07 au tp 2456928.035686857039 (2014-Sep-27.53568686) 5.7854e-05 TDB node 100.9641139405362 1.3776e-05 deg peri 261.6839574107092 1.8486e-05 deg i 17.66886605495544 4.4774e-06 deg   Orbit Determination Parameters    # obs. used (total)      2931      data-arc span      39749 days (108.83 yr)      first obs. used      1912-01-19      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .36835      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:59:02   Additional Information  Jupiter MOID = 2.48922 au   T_jup = 3.300  Orbit Covariance (6×6)   e q tp node peri i e 1.524825413908782E-15 -4.011853524529372E-15 -3.621387741101817E-13 6.173103805963705E-15 -1.123141729488254E-13 1.669104749736436E-15 q -4.011853524529372E-15 1.061728062630037E-14 1.056148326956274E-12 -1.718420070497751E-14 3.126029105019628E-13 -3.722357438587745E-15 tp -3.621387741101817E-13 1.056148326956274E-12 3.347112681695127E-9 -9.00139180127559E-12 7.314284214898477E-10 3.076185320552025E-12 node 6.173103805963705E-15 -1.718420070497751E-14 -9.00139180127559E-12 1.897807377119811E-10 -1.821851742371652E-10 1.019604846277353E-11 peri -1.123141729488254E-13 3.126029105019628E-13 7.314284214898477E-10 -1.821851742371652E-10 3.417308207234437E-10 -9.195765307582252E-12 i 1.669104749736436E-15 -3.722357438587745E-15 3.076185320552025E-12 1.019604846277353E-11 -9.195765307582252E-12 2.004715575925768E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 10.2   n/a MPO502164 IRAS observations used: 19 diameter diameter 25.274 km 0.443 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 6.319 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Stephens, R.D. (2004) Minor Planet Bull. 31, 95-97.] [Warner, B.D. (2016) Minor Planet Bull. 43, 227-233.] [McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.218   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   SMASSII spectral type spec_B X   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) 1196 Sheba (1931 KE)          Discovered 1931-May-21 by Jackson, C. at Johannesburg (UO) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1931 KE = A912 BB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-27 02:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin