+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117180 (2004 RH78) Classification: Main-belt Asteroid          SPK-ID: 2117180 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .03524898265333971 5.3772e-08   a 2.714989167100454 2.2028e-08 au q 2.619288561045325 1.4887e-07 au i 6.698993144874263 5.0212e-06 deg node 42.4083798360863 4.9269e-05 deg peri 343.8854703872635 9.2559e-05 deg M 163.1917545065934 8.1142e-05 deg tp 2458259.793272185615 (2018-May-21.29327219) 0.00036508 TDB period 1633.994455292196 4.47 1.9886e-05 5.444e-08 d yr n .2203189850700098 2.6813e-09 deg/d Q 2.810689773155583 2.2804e-08 au   Orbit Determination Parameters    # obs. used (total)      447      data-arc span      8037 days (22.00 yr)      first obs. used      1998-04-22      last obs. used      2020-04-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5547      source      ORB      producer      Otto Matic      solution date      2020-May-20 20:09:34   Additional Information  Earth MOID = 1.62433 au   Jupiter MOID = 2.33635 au   T_jup = 3.350  [ 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 15.6   n/a MPO422404   117180 (2004 RH78)          Discovered 2004-Sep-08 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ 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 1921-Jul-23 10:16 00:05 Hebe 0.0178619630481471 0.0178422292421355 0.0178817177300146 5.48617809598927 5.48617803254996 2422893.928118553 5.16659426634018 1378.24083917742 66.0887860614841 -44.4926539344545 28358.4405606077 T 23 CATAB v2.0f-lin.ifort 2020-May-20 20:09:37 2020-May-20 20:09 2042-May-30 01:55 00:02 Hebe 0.0401961286218573 0.0401849475441106 0.0402073097077309 5.5802005962865 5.58020056857094 2467034.579570710 1.9910929829161 558.127341114972 65.7699728947882 2.98106580587531 11758.8325471818 T 23 CATAB v2.0f-lin.ifort 2020-May-20 20:09:37 2020-May-20 20:09 2128-Jul-08 08:46 00:06 Hygie 0.0348098425574747 0.0347966194320078 0.0348231052880194 3.11348860248406 3.11348824598933 2498484.865328745 6.30769135797941 1965.88935029056 54.0653174797199 70.4944278610897 90526.2440243935 T 23 CATAB v2.0f-lin.ifort 2020-May-20 20:09:37 2020-May-20 20:09 2150-Dec-09 09:52 00:11 Hygie 0.04139603397386 0.0413497448958772 0.0414423231771566 3.22786297538335 3.22786268622973 2506673.911336479 11.2561339692268 2305.00301041052 52.3990947969475 2.87504577101638 6485.71047455426 T 23 CATAB v2.0f-lin.ifort 2020-May-20 20:09:37 2020-May-20 20:09 Alternate Designations  2004 RH78 = 2000 WO79  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-01 08:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin