+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3840 Mimistrobell (1980 TN4) Classification: Main-belt Asteroid          SPK-ID: 2003840 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 102 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08299665626553333 3.0439e-08   a 2.249528470030203 5.7114e-09 au q 2.062825128843575 6.7586e-08 au i 3.916885956738294 3.1473e-06 deg node 42.24229814198276 4.5477e-05 deg peri 168.0033448323244 4.8958e-05 deg M 126.6236614095649 1.8438e-05 deg tp 2458767.040990405590 (2019-Oct-10.54099041) 6.2902e-05 TDB period 1232.354535612887 3.37 4.6933e-06 1.285e-08 d yr n .2921237270579454 1.1125e-09 deg/d Q 2.43623181121683 6.1854e-09 au   Orbit Determination Parameters    # obs. used (total)      3213      data-arc span      33926 days (92.88 yr)      first obs. used      1928-02-25      last obs. used      2021-01-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40811      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:13:39   Additional Information  Earth MOID = 1.05612 au   Jupiter MOID = 2.52249 au   T_jup = 3.621  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.35   n/a E2021B10   diameter diameter 5.174 km 0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   geometric albedo albedo 0.279   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   3840 Mimistrobell (1980 TN4)          Discovered 1980-Oct-09 by Shoemaker, C. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1980 TN4 = 1928 DR = 1952 HW2 = 1979 FG4 = 1982 DD = 1987 UK5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-07 08:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin