+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1351783612058008 4.0445e-08   a 2.662450528874779 1.2524e-08 au q 2.302544829589968 1.0346e-07 au i 10.6947770539557 3.771e-06 deg node 243.8226607069419 1.9867e-05 deg peri 330.729099339246 2.3716e-05 deg M 155.2689419167968 1.3431e-05 deg tp 2458516.111284768224 (2019-Feb-01.61128477) 5.8132e-05 TDB period 1586.794721738143 4.34 1.1196e-05 3.065e-08 d yr n .2268724461130443 1.6008e-09 deg/d Q 3.022356228159589 1.4217e-08 au   Orbit Determination Parameters    # obs. used (total)      1298      data-arc span      12015 days (32.90 yr)      first obs. used      1988-01-28      last obs. used      2020-12-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47725      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:50:30   Additional Information  Earth MOID = 1.29983 au   Jupiter MOID = 1.993 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 14.34   n/a E2021B10   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-Apr-13 03:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin