+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1538652942736521 4.4178e-08   a 3.147811905775769 3.1222e-08 au q 2.663472900575475 1.4747e-07 au i 1.901145672551298 6.334e-06 deg node 132.1178055897754 0.0001564 deg peri 315.7562143271381 0.000158 deg M 299.8373231458556 2.3431e-05 deg tp 2459341.407250423822 (2021-May-06.90725042) 0.00013555 TDB period 2039.91272612601 5.58 3.035e-05 8.309e-08 d yr n .1764781382013703 2.6256e-09 deg/d Q 3.632150910976063 3.6026e-08 au   Orbit Determination Parameters    # obs. used (total)      324      data-arc span      9303 days (25.47 yr)      first obs. used      1994-03-05      last obs. used      2019-08-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58771      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 03:26:49   Additional Information  Earth MOID = 1.68031 au   Jupiter MOID = 1.57965 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 ] 2020-Oct-25 12:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin