+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   183908 (2004 CN94) Classification: Main-belt Asteroid          SPK-ID: 2183908 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1411932000227672 4.8492e-08   a 2.425705777979552 1.495e-08 au q 2.083212616872903 1.179e-07 au i 1.303835271841661 5.9862e-06 deg node 267.7546305216263 0.00031598 deg peri 169.5938771888946 0.00031728 deg M 172.2618011891071 2.8808e-05 deg tp 2458340.198788555738 (2018-Aug-09.69878856) 0.00010824 TDB period 1379.925407020334 3.78 1.2757e-05 3.493e-08 d yr n .2608836667319187 2.4117e-09 deg/d Q 2.7681989390862 1.706e-08 au   Orbit Determination Parameters    # obs. used (total)      185      data-arc span      7464 days (20.44 yr)      first obs. used      2000-01-16      last obs. used      2020-06-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5836      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 08:30:11   Additional Information  Earth MOID = 1.09861 au   Jupiter MOID = 2.46177 au   T_jup = 3.497  [ 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 17.2   n/a MPO427121   183908 (2004 CN94)          Discovered 2004-Feb-12 by Spacewatch at Kitt Peak Reference: 20080420/Numbers.arc Last Updated: 2008-04-23 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2009-Mar-18 10:00 00:01 Iris 0.037827413863952 0.0378244500358742 0.0378303777053376 2.6237922064306 2.62379214850949 2454908.916551704 1.10794598989898 154.56142541905 94.4769738112257 -22.0315389664412 40650.8851656853 T 9 CATAB v2.0f-lin.ifort 2020-Nov-12 08:30:12 2020-Nov-12 08:30 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-02 20:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin