+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14408 (1991 PC16) Classification: Main-belt Asteroid          SPK-ID: 2014408 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1972189308813335 3.3885e-08   a 3.158857164233417 1.4391e-08 au q 2.535870731496462 1.0556e-07 au i .4819773398478877 3.4489e-06 deg node 84.78047518911991 0.000434 deg peri 239.8755864768663 0.00043408 deg M 91.46937002089213 8.4664e-06 deg tp 2458679.465360605585 (2019-Jul-14.96536061) 4.7982e-05 TDB period 2050.658817691066 5.61 1.4014e-05 3.837e-08 d yr n .1755533377343292 1.1997e-09 deg/d Q 3.781843596970373 1.7229e-08 au   Orbit Determination Parameters    # obs. used (total)      1840      data-arc span      12529 days (34.30 yr)      first obs. used      1986-10-23      last obs. used      2021-02-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49409      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:28:15   Additional Information  Earth MOID = 1.52194 au   Jupiter MOID = 1.56117 au   T_jup = 3.175  [ 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 13.72   n/a E2021B10   diameter diameter 9.326 km 0.310 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.074   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14408 (1991 PC16)          Discovered 1991-Aug-06 by Holt, H. E. at Palomar Reference: 20000418/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1991 PC16 = 1986 UT4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-May-11 15:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin