+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21005 (1988 BF5) Classification: Main-belt Asteroid          SPK-ID: 2021005 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1351141090611943 4.0424e-08   a 2.662587384309589 1.2444e-08 au q 2.302834262081023 1.0339e-07 au i 10.69444097233796 3.7682e-06 deg node 243.8234866153634 1.957e-05 deg peri 330.6812657728925 2.3411e-05 deg M 199.7956786562613 1.3344e-05 deg tp 2460102.697145113918 (2023-Jun-07.19714511) 6.0386e-05 TDB period 1586.917070080312 4.34 1.1125e-05 3.046e-08 d yr n .2268549546711857 1.5903e-09 deg/d Q 3.022340506538155 1.4125e-08 au   Orbit Determination Parameters    # obs. used (total)      1309      data-arc span      12067 days (33.04 yr)      first obs. used      1988-01-28      last obs. used      2021-02-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4757      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 18:29:23   Additional Information  Earth MOID = 1.30179 au   Jupiter MOID = 1.99189 au   T_jup = 3.347  [ 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 14.35   n/a MPCxxxxx   diameter diameter 8.219 km 0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.031   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21005 (1988 BF5)          Discovered 1988-Jan-28 by McNaught, R. H. at Siding Spring Reference: 20010208/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1988 BF5 = 1998 QP82  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jul-30 15:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin