+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   134178 Markchodas (2005 CR18) Classification: Main-belt Asteroid          SPK-ID: 2134178 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1540491706630537 4.34e-08   a 3.148532796010622 2.3578e-08 au q 2.66350392997976 1.4699e-07 au i 1.901118327623617 4.4892e-06 deg node 132.1159833405115 0.00014947 deg peri 315.7209619393927 0.00015063 deg M 335.172779529267 1.7123e-05 deg tp 2459341.229893521472 (2021-May-06.72989352) 9.738e-05 TDB period 2040.613516420514 5.59 2.2922e-05 6.276e-08 d yr n .176417531836937 1.9817e-09 deg/d Q 3.633561662041483 2.721e-08 au   Orbit Determination Parameters    # obs. used (total)      414      data-arc span      9806 days (26.85 yr)      first obs. used      1994-03-05      last obs. used      2021-01-08      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .54313      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 18:07:15   Additional Information  Earth MOID = 1.68003 au   Jupiter MOID = 1.57858 au   T_jup = 3.189  [ 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 15.8   n/a MPO417703   134178 Markchodas           Discovered 2005 Feb. 2 by the Catalina Sky Survey. Mark A. Chodas (b. 1990) is a student engineer at the Massachusetts Institute of Technology working as the Lead Systems Engineer ensuring that all system components meet science requirements for the student-built Regolith X-ray Imaging Spectrometer aboard the OSIRIS-REx Asteroid Sample Return Mission. 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 2016-08-18 Last Updated: 2016-08-22 [ show close-approach data ] Alternate Designations  2005 CR18 = 2003 UJ255  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 13:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin