+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   25D/Neujmin 2 Classification: Jupiter-family Comet          SPK-ID: 1000064 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=1927-Mar-21.0] 7 (default) [epoch=1916-Feb-27.0] SAO/1916 Orbital Elements at Epoch 2424960.5 (1927-Mar-21.0) TDB Reference: JPL 7 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.566818596285863 4.9007e-07   a 3.08916688391109 1.5343e-07 au q 1.33816964707983 1.5173e-06 au i 10.6387130963875 8.6051e-05 deg node 328.7169509657245 0.00024532 deg peri 193.7040335562024 0.00081816 deg M 11.57706623123575 0.00017593 deg tp 2424896.724114143077 (1927-Jan-16.22411414) 0.00096599 TDB period 1983.172459232064 5.43 0.00014775 4.045e-07 d yr n .1815273292668664 1.3524e-08 deg/d Q 4.840164120742355 2.404e-07 au   Orbit Determination Parameters    # obs. used (total)      55      data-arc span      3994 days (10.93 yr)      first obs. used      1916-03-05      last obs. used      1927-02-10      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      1      norm. resid. RMS      1.2726      source      ORB      producer      M.S.W. Keesey      solution date      2003-Apr-18 14:24:13   Additional Information  Earth MOID = .35044 au   T_jup = 2.932  [ 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 12.5   n/a ICQ 1992 Handbook   comet total magnitude slope K1 15.0   n/a ICQ 1992 Handbook   comet nuclear magnitude M2 16.   n/a ICQ 1992 Handbook   comet nuclear magnitude slope K2 10.0   n/a ICQ 1992 Handbook   25D/Neujmin 2          Discovered 1916-Feb-24 by Neujmin, G. N. at Simeis, Crimea discovered on plate/photo taken on discovery date Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1927.0   25D/1926 V2   1927 I   1926g   1916.2   25D/1916 D1   1916 II   1916a  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 11:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin