+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   37P/Forbes Classification: Jupiter-family Comet          SPK-ID: 1000028 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2017-Mar-27.0] K182/9 (default) [epoch=2013-Mar-13.0] K114/4 [epoch=2005-Dec-16.0] K055/15 [epoch=1980-Oct-08.0] J873/2 [epoch=1974-Jun-02.0] SAO/1974 [epoch=1961-Aug-09.0] SAO/1961 [epoch=1948-Sep-06.0] SAO/1948 [epoch=1942-May-01.0] SAO/1942 [epoch=1929-Jul-08.0] SAO/1929 Orbital Elements at Epoch 2457839.5 (2017-Mar-27.0) TDB Reference: JPL K182/9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .534476713071357 2.6098e-07   a 3.45599944504109 4.8454e-07 au q 1.608848221279094 9.3691e-07 au i 8.962090696248872 1.2125e-05 deg node 314.6396914009586 5.4304e-05 deg peri 330.0006658552098 0.00010394 deg M 298.154572791861 3.0838e-05 deg tp 2458242.647541812798 (2018-May-04.14754181) 0.0001279 TDB period 2346.707292750458 6.42 0.00049352 1.351e-06 d yr n .1534064350982871 3.2262e-08 deg/d Q 5.303150668803085 7.4352e-07 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 7.651259896896437E-9 2.286E-10 A2 [EST] 2.248157289476107E-10 9.265E-11   Orbit Determination Parameters    # obs. used (total)      1199      data-arc span      2866 days (7.85 yr)      first obs. used      2011-02-08      last obs. used      2018-12-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .57679      source      ORB      producer      Shantanu Naidu      solution date      2019-May-15 16:39:40   Additional Information  Earth MOID = .598689 au   Jupiter MOID = .226 au   T_jup = 2.866  [ 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 11.5   1. K182/9 2 parameter fit from 373 observations, autocmod 2.6q comet total magnitude slope K1 16.   n/a K182/9 autocmod 2.6q comet nuclear magnitude M2 15.4   0.9 K182/9 from 759 observations, autocmod 2.6q comet nuclear magnitude slope K2 5.   n/a K182/9 autocmod 2.6q comet nuclear phase coefficient PC 0.03   n/a K182/9 autocmod 2.6q diameter diameter 1.92 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp.223-264   37P/Forbes          Discovered 1929-Aug-01 by Forbes, A. F. I. at Rosebank, South Africa Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1992.6       1993 IV   1993f   1986.2       1987 I   1986g   1979.8       1980 VI   1980a   1973.4       1974 IX   1974a   1960.5       1961 VI   1961a   1947.7       1948 VIII   1948e   1941.2   37P/1942 L1   1942 III     1928.4   37P/1929 P1   1929 II   1929c  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-07 09:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin