+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   49P/Arend-Rigaux Classification: Jupiter-family Comet          SPK-ID: 1000002 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2011-Aug-17.0] K183/16 (default) [epoch=2000-Feb-09.0] K059/1 [epoch=1998-Jul-06.0] SAO/1998 [epoch=1991-Sep-21.0] SAO/1991 [epoch=1984-Dec-06.0] SAO/1984 [epoch=1978-Feb-21.0] SAO/1978 [epoch=1971-Mar-30.0] SAO/1971 [epoch=1964-Jun-14.0] SAO/1964 [epoch=1957-Aug-30.0] SAO/1957 [epoch=1950-Dec-25.0] SAO/1950 Orbital Elements at Epoch 2455790.5 (2011-Aug-17.0) TDB Reference: JPL K183/16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6004185820693869 5.1286e-08   a 3.563306952548709 5.5731e-08 au q 1.423831244621425 1.7916e-07 au i 19.04985118598757 5.3882e-06 deg node 118.8784376365813 1.931e-05 deg peri 332.7869603600927 2.3589e-05 deg M 350.7575413572662 5.1044e-06 deg tp 2455853.575876597786 (2011-Oct-19.07587660) 3.5579e-05 TDB period 2456.84795063216 6.73 5.7638e-05 1.578e-07 d yr n .1465292143567005 3.4376e-09 deg/d Q 5.702782660475993 8.9192e-08 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] -1.666508415694754E-10 1.533E-11 A2 [EST] 6.254689872849799E-11 6.21E-12 A3 [EST] 3.445296683804785E-10 2.147E-11 DT [EST] 155.5764343485833 9.111   Orbit Determination Parameters    # obs. used (total)      3313      data-arc span      5870 days (16.07 yr)      first obs. used      2004-06-24      last obs. used      2020-07-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54353      source      ORB      producer      Shantanu Naidu      solution date      2020-Aug-08 22:52:56   Additional Information  Earth MOID = .464185 au   Jupiter MOID = .157623 au   T_jup = 2.711  [ 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 comet total magnitude M1 14.2   0.7 K183/16 2 parameter fit from 896 observations, autocmod 2.8 comet total magnitude slope K1 5.75   n/a K183/16 autocmod 2.8 diameter diameter 8.48 km n/a Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A.; (2004) Comets II, pp. 223-264   rotation period rot_per 13.450 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Eisner, N.; Knight, M.M.; Schleigcher, D.G. (2017) Astron. J. 154, A196.] geometric albedo albedo 0.028   0.005 Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)   49P/Arend-Rigaux          Discovered 1951-Feb-05 by Arend, Silvio and Rigaux, F. at Uccle, Belgium discovered on plate/photo taken on discovery date as well as 2/6 Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1991.6       1991 XVII     1984.9       1984 XXI   1984k   1978.2       1978 III   1977k   1971.4       1971 IV   1970j   1964.7       1964 V   1963g   1958.0   49P/1958 B1   1957 VII   1958b   1951.3   49P/1951 C2   1950 VII   1951b  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-18 20:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin