+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   243421 (2009 BC187) Classification: Main-belt Asteroid          SPK-ID: 2243421 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1448979043421218 5.483e-08   a 3.090160516738476 4.9734e-08 au q 2.642402733782302 1.8319e-07 au i 21.41369422920521 7.3236e-06 deg node 302.8269448870773 1.457e-05 deg peri 330.4794612646455 2.8925e-05 deg M 306.7086973975038 2.7608e-05 deg tp 2459494.213440648236 (2021-Oct-06.71344065) 0.00015441 TDB period 1984.129369515768 5.43 4.7899e-05 1.311e-07 d yr n .181439781866572 4.3802e-09 deg/d Q 3.537918299694649 5.694e-08 au   Orbit Determination Parameters    # obs. used (total)      307      data-arc span      7251 days (19.85 yr)      first obs. used      2000-06-11      last obs. used      2020-04-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5175      source      ORB      producer      Otto Matic      solution date      2020-May-21 12:48:08   Additional Information  Earth MOID = 1.64134 au   Jupiter MOID = 1.74581 au   T_jup = 3.104  [ show covariance matrix ] [ 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 14.89   n/a E2021B55   diameter diameter 5.216 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.092   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   243421 (2009 BC187)          Discovered 2009-Jan-26 by LINEAR at Socorro Reference: 20100626/Numbers.arc Last Updated: 2010-06-28 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1943-Jul-28 00:35 00:05 Jupiter 1.88300690132706 1.88300330780433 1.88301049486671 5.86370022628676 5.78647833085176 2430933.524199920 4.5016930761322 415.60478117611 117.365743686653 70.2960453601243 2039893.71871151 T 14 CATAB v2.0f-lin.ifort 2020-May-21 12:48:30 2020-May-21 12:48 2013-Oct-05 19:51 < 00:01 Jupiter 1.76263952642535 1.76263883515759 1.76264021769441 5.54236716111088 5.45497475064148 2456571.327098381 0.395751125344674 345.01974639362 31.5041596026463 -88.3905329197732 2623531.2022071 T 14 CATAB v2.0f-lin.ifort 2020-May-21 12:48:30 2020-May-21 12:48 2073-Sep-13 01:28 00:03 Jupiter 1.76793565690768 1.76793415091271 1.76793716292626 5.79566297806289 5.71239916466203 2478463.560866661 3.32898732975691 466.872991177774 53.0890083546633 83.6127488490252 2771569.22100988 T 14 CATAB v2.0f-lin.ifort 2020-May-21 12:48:30 2020-May-21 12:48 2143-Nov-19 11:13 00:08 Jupiter 1.85603502734123 1.85602919378846 1.85604086328229 5.34678375257462 5.26073891598666 2504096.967423806 8.32800490335799 3385.15384826673 32.8384747692633 -84.968659927672 2111590.66695513 T 14 CATAB v2.0f-lin.ifort 2020-May-21 12:48:30 2020-May-21 12:48 Alternate Designations  2009 BC187 = 2008 TO176  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-08 13:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin