+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   297P/Beshore Classification: Encke-type Comet          SPK-ID: 1002501 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2454888.5 (2009-Feb-26.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .308598394316476 5.4605e-07   a 3.484047960476378 3.0109e-07 au q 2.408876354151775 2.0998e-06 au i 10.2634881810502 2.2788e-05 deg node 98.28544286255293 0.0001002 deg peri 131.8217205750275 0.00071492 deg M 51.82785820062227 0.00034289 deg tp 2454546.532073459147 (2008-Mar-21.03207346) 0.0022892 TDB period 2375.333610703384 6.50 0.00030791 8.43e-07 d yr n .1515576584180935 1.9646e-08 deg/d Q 4.559219566800982 3.94e-07 au   Orbit Determination Parameters    # obs. used (total)      568      data-arc span      4838 days (13.25 yr)      first obs. used      2001-03-20      last obs. used      2014-06-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-BIG16      condition code      1      norm. resid. RMS      .70531      source      ORB      producer      Otto Matic      solution date      2017-Jan-11 20:00:24   Additional Information  Earth MOID = 1.41207 au   Jupiter MOID = .674623 au   T_jup = 3.025  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 6.1   1. 34 from 132 observations, assumed slope, autocmod 2.6g comet total magnitude slope K1 22.   n/a 34 autocmod 2.6g comet nuclear magnitude M2 13.8   1. 34 from 282 observations, autocmod 2.6g comet nuclear magnitude slope K2 5.   n/a 34 autocmod 2.6g comet nuclear phase coefficient PC 0.03   n/a 34 autocmod 2.6g [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2014.7   297P/2014 D1         2008.2   297P/2008 J2        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Feb-25 16:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin