+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100279 (1994 YL4) Classification: Main-belt Asteroid          SPK-ID: 2100279 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1300233532881468 3.8514e-08   a 2.375820473336828 1.1645e-08 au q 2.066908328582941 9.3146e-08 au i .7663601290614751 4.6378e-06 deg node 326.2781922993267 0.00042812 deg peri 169.2594932855188 0.00042892 deg M 11.3714347964033 2.8417e-05 deg tp 2459158.249522427245 (2020-Nov-04.74952243) 0.00010538 TDB period 1337.577200988084 3.66 9.8341e-06 2.692e-08 d yr n .2691433434526722 1.9788e-09 deg/d Q 2.684732618090715 1.3159e-08 au   Orbit Determination Parameters    # obs. used (total)      323      data-arc span      9487 days (25.97 yr)      first obs. used      1994-12-31      last obs. used      2020-12-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60229      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:24:53   Additional Information  Earth MOID = 1.08071 au   Jupiter MOID = 2.34028 au   T_jup = 3.530  [ 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 17.1   n/a MPO493563   100279 (1994 YL4)          Discovered 1994-Dec-31 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Feb-27 05:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin