+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   78309 Alessielisa (2002 PV65) Classification: Main-belt Asteroid          SPK-ID: 2078309 [ 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 .09274499398405731 4.8362e-08   a 2.520837274095178 1.4015e-08 au q 2.287042236274433 1.2341e-07 au i 12.45165232744825 3.3914e-06 deg node 145.2084321335631 2.5192e-05 deg peri 301.8461669112626 3.3724e-05 deg M 77.06771550288809 2.1543e-05 deg tp 2458887.542308636175 (2020-Feb-08.04230864) 8.7915e-05 TDB period 1461.893195559362 4.00 1.2191e-05 3.338e-08 d yr n .2462560199975853 2.0536e-09 deg/d Q 2.754632311915923 1.5314e-08 au   Orbit Determination Parameters    # obs. used (total)      681      data-arc span      9761 days (26.72 yr)      first obs. used      1994-06-16      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .57528      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 13:36:08   Additional Information  Earth MOID = 1.32876 au   Jupiter MOID = 2.39958 au   T_jup = 3.418  [ 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 15.74   n/a E2020-QM9   78309 Alessielisa           Discovered 2002 Aug. 5 by F. Bernardi at Campo Imperatore. Elisa Maria Alessi (b. 1981) has worked for several years in the fields of space debris dynamics, orbit determination for interplanetary missions, and trajectory design in planet-satellite systems. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2014-10-08 Last Updated: 2015-01-12 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2129-Apr-07 20:36 < 00:01 Ceres 0.0177067029735427 0.0176995776091749 0.0177138843254623 4.21240627235315 4.21240060834323 2498758.358286160 0.996666926877217 1608.40371666401 40.8383670386846 -77.359440019804 62809.7400195152 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 13:36:10 2021-Apr-13 13:36 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-17 21:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin