+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   33P/Daniel Classification: Jupiter-family Comet          SPK-ID: 1000018 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2009-05-01.0] K084/7 (default) [epoch=1992-09-15.0] SAO/1992 [epoch=1985-08-03.0] SAO/1985 [epoch=1978-06-21.0] SAO/1978 [epoch=1964-05-05.0] SAO/1964 [epoch=1950-08-27.0] SAO/1950 [epoch=1943-11-12.0] SAO/1943 [epoch=1937-01-27.0] SAO/1937 [epoch=1909-11-20.0] SAO/1909 Orbital Elements at Epoch 2454952.5 (2009-May-01.0) TDB Reference: JPL K084/7 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.4619610780504002089941 4.6292e-07   a 4.0322648712397013426311 4.4837e-07 AU q 2.1695154443370507912902 1.737e-06 AU i 22.374569417811109417471 1.6453e-05 deg node 66.56463590864907 5.2783e-05 deg peri 18.96396783509159 0.00018178 deg M 34.65417307778618 6.9943e-05 deg tp 2454667.808143396562 (2008-Jul-20.30814340) 0.00058334 JED period 2957.481286515956 8.10 0.00049329 1.351e-06 d yr n .1217251996289369 2.0303e-08 deg/d Q 5.895014298142352 6.555e-07 AU Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 3.823178055313947E-9 4.221E-10 A2 [EST] 5.962458833985652E-10 1.608E-11 A3 [EST] 2.556290398772548E-9 2.934E-10   Orbit Determination Parameters    # obs. used (total)      297      data-arc span      8672 days (23.74 yr)      first obs. used      1985-07-27      last obs. used      2009-04-24      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      1      fit RMS      .95728      data source      ORB      producer      Nick Mastrodemos      solution date      2009-May-08 13:30:57   Additional Information  Earth MOID = 1.19449 AU   T_jup = 2.734  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 11.3 mag 1. K084/7 from 69 observations, assumed slope, autocmod 2.4a comet total magnitude slope K1 12.   n/a K084/7 autocmod 2.4a diameter diameter 2.6 km n/a Scotti,J (1994) BAAS 26:1375   33P/Daniel          Discovered 1909-Dec-07 by Daniel, Zaccheus at Princeton University, New Jersey Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1992.4       1992 XXIII   1992o   1984.3       1985 XI   1985j   1976.2       1978 XII   1979b   1960.0       1964 II   1964a   1951.9       1950 V   1950d   1943.8       1943 IV     1935.7   33P/1937 B1   1937 I   1937a   1911.4   33P/1909 X1   1909 IV   1909e  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-23 03:55 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin