+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   447956 (2008 BB19) Classification: Main-belt Asteroid          SPK-ID: 2447956 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1232223325223061 5.1968e-08   a 2.707463708405016 6.2062e-08 au q 2.373843715035857 1.6951e-07 au i 7.216775619393001 5.077e-06 deg node 108.7335633346717 6.1333e-05 deg peri 195.5943083001455 7.8436e-05 deg M 93.65059062526016 4.3391e-05 deg tp 2458577.197910068891 (2019-Apr-03.69791007) 0.00020576 TDB period 1627.205459760292 4.46 5.5949e-05 1.532e-07 d yr n .2212381957303859 7.607e-09 deg/d Q 3.041083701774174 6.9709e-08 au   Orbit Determination Parameters    # obs. used (total)      133      data-arc span      6606 days (18.09 yr)      first obs. used      2001-08-23      last obs. used      2019-09-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .6205      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 16:24:47   Additional Information  Earth MOID = 1.3594 au   Jupiter MOID = 2.17309 au   T_jup = 3.342  [ hide covariance matrix ] Orbital Elements at Epoch 2457674.5 (2016-Oct-13.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1247185367894452 5.2147e-08   q 2.368826891960114 1.7077e-07 au tp 2456951.646804223431 (2014-Oct-21.14680422) 0.00024507 TDB node 108.804489168409 6.1402e-05 deg peri 195.8241369191931 7.8187e-05 deg i 7.214274768822576 5.0743e-06 deg   Orbit Determination Parameters    # obs. used (total)      133      data-arc span      6606 days (18.09 yr)      first obs. used      2001-08-23      last obs. used      2019-09-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .6205      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 16:24:47   Additional Information  Jupiter MOID = 2.17309 au   T_jup = 3.342  Orbit Covariance (6×6)   e q tp node peri i e 2.719261674737755E-15 -8.514913384169443E-15 5.813230775730984E-12 1.208003597049348E-14 1.047863600591697E-12 -6.373748437544043E-15 q -8.514913384169443E-15 2.916117912237687E-14 -2.639723286411982E-11 -1.605280928102766E-14 -4.831131477745853E-12 3.059177140820701E-14 tp 5.813230775730984E-12 -2.639723286411982E-11 6.006115937220121E-8 -4.965287997970298E-11 1.1924145798614E-8 -6.309816230823834E-11 node 1.208003597049348E-14 -1.605280928102766E-14 -4.965287997970298E-11 3.770186457593943E-9 -3.74952315012593E-9 -3.598116660546342E-11 peri 1.047863600591697E-12 -4.831131477745853E-12 1.1924145798614E-8 -3.74952315012593E-9 6.113161280069467E-9 2.350624610761358E-11 i -6.373748437544043E-15 3.059177140820701E-14 -6.309816230823834E-11 -3.598116660546342E-11 2.350624610761358E-11 2.574900969978266E-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 16.7   n/a MPO440858   diameter diameter 1.995 km 0.401 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.093   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   447956 (2008 BB19)          Discovered 2008-Jan-28 by Ries, W. at Altschwendt Reference: Last Updated: 2015-10-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-12 11:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin