+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2005 JT81) Classification: Amor [NEO]          SPK-ID: 3278081 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .594372287335016 7.5628e-08   a 2.8211559667084 2.5972e-07 au q 1.1443390418471 1.995e-07 au i 8.529917677142608 1.4627e-05 deg node 241.6057360733271 2.7044e-05 deg peri 22.53208276155019 7.7759e-05 deg M 88.21060401727701 0.00015651 deg tp 2458776.410649359413 (2019-Oct-19.91064936) 0.00069396 TDB period 1730.76885632377 4.74 0.000239 6.543e-07 d yr n .2080000450000331 2.8723e-08 deg/d Q 4.497972891569701 4.1409e-07 au   Orbit Determination Parameters    # obs. used (total)      154      data-arc span      3828 days (10.48 yr)      first obs. used      2005-05-11      last obs. used      2015-11-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      1      norm. resid. RMS      .5403      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 22:40:10   Additional Information  Earth MOID = .137725 au   Jupiter MOID = .643943 au   T_jup = 3.016  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 20.0   n/a MPO201090   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-16 03:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin