+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100175 (1994 AX4) Classification: Main-belt Asteroid          SPK-ID: 2100175 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1400760336689272 4.2049e-08   a 3.10332735709902 2.3153e-08 au q 2.668625569740315 1.3574e-07 au i 2.484797303559682 3.9763e-06 deg node 90.30747739524008 0.00010357 deg peri 262.6269849854286 0.00010463 deg M 85.54941700812515 1.3982e-05 deg tp 2458725.980170927968 (2019-Aug-30.48017093) 7.8271e-05 TDB period 1996.824109855794 5.47 2.2347e-05 6.118e-08 d yr n .1802862847173847 2.0176e-09 deg/d Q 3.538029144457726 2.6396e-08 au   Orbit Determination Parameters    # obs. used (total)      766      data-arc span      9876 days (27.04 yr)      first obs. used      1994-01-05      last obs. used      2021-01-19      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .53769      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:30:57   Additional Information  Earth MOID = 1.66307 au   Jupiter MOID = 1.89591 au   T_jup = 3.205  [ 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 14.8   n/a MPO453456   diameter diameter 5.730 km 0.265 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.065   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100175 (1994 AX4)          Discovered 1994-Jan-05 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1994 AX4 = 2003 UG50  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 13:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin