+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   3116 Goodricke (1983 CF) Classification: Main-belt Asteroid          SPK-ID: 2003116 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2006869273993605 6.3852e-08   a 2.22737836499951 1.1466e-08 AU q 1.780372644771947 1.4069e-07 AU i 5.468055012024806 6.0764e-06 deg node 80.40617097546361 7.0476e-05 deg peri 270.6874007282805 7.2417e-05 deg M 160.7047793642819 1.752e-05 deg tp 2455858.479497606485 (2011-Oct-23.97949761) 5.7313e-05 JED period 1214.197745913674 3.32 9.3755e-06 2.567e-08 d yr n .2964920674672337 2.2894e-09 deg/d Q 2.674384085227074 1.3767e-08 AU   Orbit Determination Parameters    # obs. used (total)      1161      data-arc span      23560 days (64.50 yr)      first obs. used      1948-10-09      last obs. used      2013-04-11      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .52902      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 12:55:51   Additional Information  Earth MOID = .784569 AU   T_jup = 3.612  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.5 mag n/a PDS3 (MPC 17267)   rotation period rot_per 10. h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Science XXVI, 1511-1512.] 3116 Goodricke (1983 CF)          Discovered 1983-Feb-11 by Bowell, E. at Flagstaff (AM) (688) Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1983 CF = 1938 UM = 1948 TN = 1951 NC = 1973 DC = 1974 HR2  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 08:59 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin