+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1399559271821197 4.358e-08   a 3.102495678980844 2.3975e-08 au q 2.66828301965056 1.4174e-07 au i 2.484935952373428 3.9807e-06 deg node 90.30691423754931 0.00010707 deg peri 262.5373711675623 0.00010813 deg M 49.58274419967442 1.4144e-05 deg tp 2458725.588274596491 (2019-Aug-30.08827460) 7.8981e-05 TDB period 1996.021453486091 5.46 2.3137e-05 6.335e-08 d yr n .1803587829034868 2.0906e-09 deg/d Q 3.536708338311128 2.7331e-08 au   Orbit Determination Parameters    # obs. used (total)      722      data-arc span      9786 days (26.79 yr)      first obs. used      1994-01-05      last obs. used      2020-10-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54512      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:07:38   Additional Information  Earth MOID = 1.66443 au   Jupiter MOID = 1.89633 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 ] 2020-Dec-02 01:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin