+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   99 Dike (A868 KA) Classification: Main-belt Asteroid          SPK-ID: 2000099 [ 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 99 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1949610491646544 4.1072e-08   a 2.664873396932893 8.4125e-09 au q 2.14532688357588 1.1056e-07 au i 13.84752111253251 4.8367e-06 deg node 41.51414405881997 1.4898e-05 deg peri 195.7124947401775 1.7766e-05 deg M 334.9314335566453 9.994e-06 deg tp 2459111.147166670960 (2020-Sep-18.64716667) 4.4223e-05 TDB period 1588.961223273497 4.35 7.5241e-06 2.06e-08 d yr n .2265631122566643 1.0728e-09 deg/d Q 3.184419910289907 1.0053e-08 au   Orbit Determination Parameters    # obs. used (total)      3017      data-arc span      38587 days (105.65 yr)      first obs. used      1915-01-20      last obs. used      2020-09-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .36746      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:33:23   Additional Information  Earth MOID = 1.13748 au   Jupiter MOID = 1.82697 au   T_jup = 3.316  [ hide covariance matrix ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 99 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1965790651619023 4.0993e-08   q 2.140041704254447 1.1047e-07 au tp 2455932.323004710476 (2012-Jan-05.82300471) 4.2919e-05 TDB node 41.62672556282139 1.4897e-05 deg peri 195.5199756861597 1.7713e-05 deg i 13.85311352364224 4.8375e-06 deg   Orbit Determination Parameters    # obs. used (total)      3017      data-arc span      38587 days (105.65 yr)      first obs. used      1915-01-20      last obs. used      2020-09-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .36746      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:33:23   Additional Information  Jupiter MOID = 1.82697 au   T_jup = 3.316  Orbit Covariance (6×6)   e q tp node peri i e 1.680452750356635E-15 -4.52043838834548E-15 -4.27293861452125E-13 -5.066185782665639E-15 -6.411209206404597E-14 -4.478904881509229E-16 q -4.52043838834548E-15 1.220469301888343E-14 1.100381518558921E-12 1.300519498213542E-14 1.646411840503359E-13 1.620947371558032E-15 tp -4.27293861452125E-13 1.100381518558921E-12 1.842038401252772E-9 8.909060541585492E-14 4.202733151708481E-10 2.137603291004161E-12 node -5.066185782665639E-15 1.300519498213542E-14 8.909060541585492E-14 2.219262344974537E-10 -2.149993759972661E-10 -8.257276184113966E-12 peri -6.411209206404597E-14 1.646411840503359E-13 4.202733151708481E-10 -2.149993759972661E-10 3.137358311012132E-10 8.522289336297558E-12 i -4.478904881509229E-16 1.620947371558032E-15 2.137603291004161E-12 -8.257276184113966E-12 8.522289336297558E-12 2.340172693617487E-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 9.5   n/a MPO502153 IRAS observations used: 3 diameter diameter 67.354 km 0.416 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 18.127 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Pilcher, F. (2011) Minor Planet Bull. 38, 183-185.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.065   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.703   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.84, mean=7.96, max.=15.22) deg. U-B UB 0.322   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.84, mean=7.96, max.=15.22) deg. Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices SMASSII spectral type spec_B Xk   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) 99 Dike (A868 KA)          Discovered 1868-May-28 by Borrelly, A. at Marseille Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A868 KA = 1935 UC = 1935 YL = 1939 UT = 1948 UE = 1948 WC = 1961 XJ = 1974 VB = A915 BA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 00:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin