+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   35999 (1999 NB22) Classification: Main-belt Asteroid          SPK-ID: 2035999 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1300688848647188 3.8516e-08   a 2.765068729037143 1.6632e-08 au q 2.405419322876976 1.0524e-07 au i 10.05363783379797 4.2753e-06 deg node 107.9939443940305 2.6604e-05 deg peri 190.1618456321386 3.2266e-05 deg M 192.5061286048285 2.031e-05 deg tp 2459781.864620626219 (2022-Jul-21.36462063) 9.689e-05 TDB period 1679.412273908118 4.60 1.5153e-05 4.149e-08 d yr n .2143607055831818 1.9341e-09 deg/d Q 3.12471813519731 1.8795e-08 au   Orbit Determination Parameters    # obs. used (total)      964      data-arc span      7976 days (21.84 yr)      first obs. used      1998-03-24      last obs. used      2020-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56309      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 04:01:08   Additional Information  Earth MOID = 1.3902 au   Jupiter MOID = 2.07627 au   T_jup = 3.305  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.7   n/a MPO319523   diameter diameter 3.508 km 1.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.227   0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   35999 (1999 NB22)          Discovered 1999-Jul-14 by LINEAR at Socorro Reference: 20020227/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 NB22 = 1998 FC95  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-21 02:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin