+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   134536 (1999 RD77) Classification: Main-belt Asteroid          SPK-ID: 2134536 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1305963734927783 3.9241e-08   a 2.328910957031451 1.0588e-08 au q 2.024763631855548 9.0541e-08 au i 7.47705244895072 4.0792e-06 deg node 144.082813475447 3.2525e-05 deg peri 212.662468761575 3.5716e-05 deg M 341.2147240180187 1.4955e-05 deg tp 2459268.239631873252 (2021-Feb-22.73963187) 5.4032e-05 TDB period 1298.158594942212 3.55 8.8527e-06 2.424e-08 d yr n .277315885287518 1.8911e-09 deg/d Q 2.633058282207354 1.1971e-08 au   Orbit Determination Parameters    # obs. used (total)      615      data-arc span      7628 days (20.88 yr)      first obs. used      1999-09-04      last obs. used      2020-07-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54879      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 10:56:47   Additional Information  Earth MOID = 1.02212 au   Jupiter MOID = 2.79395 au   T_jup = 3.550  [ 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 16.41   n/a E2021B55   134536 (1999 RD77)          Discovered 1999-Sep-07 by LINEAR at Socorro Reference: 20060907/Numbers.arc Last Updated: 2006-09-10 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-10 12:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin