+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   8860 Rohloff (1991 TE5) Classification: Main-belt Asteroid          SPK-ID: 2008860 [ 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 46 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09280595147854534 3.3406e-08   a 2.545129129053008 8.3706e-09 au q 2.308925998595483 8.5068e-08 au i 13.95289623125241 3.5175e-06 deg node 15.14875314655285 1.261e-05 deg peri 295.3865267537558 2.1542e-05 deg M 137.505295468252 1.7791e-05 deg tp 2458634.025868884668 (2019-May-30.52586888) 7.283e-05 TDB period 1483.075153630024 4.06 7.3165e-06 2.003e-08 d yr n .2427388788213815 1.1975e-09 deg/d Q 2.781332259510534 9.1475e-09 au   Orbit Determination Parameters    # obs. used (total)      2970      data-arc span      18937 days (51.85 yr)      first obs. used      1969-03-14      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .38799      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:45:30   Additional Information  Earth MOID = 1.33218 au   Jupiter MOID = 2.49342 au   T_jup = 3.396  [ 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 12.68   n/a E2021B10   diameter diameter 8.883 km 0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 18.8411 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.156   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   8860 Rohloff           Discovered 1991 Oct. 5 by L. D. Schmadel and F. Börngen at Tautenburg. Ralf-Rainer Rohloff (b. 1960) is a design engineer on the staff of the Max-Planck-Institut für Astronomie, Heidelberg. Head of the construction team, he played an important role in the development of adaptive optics devices for the MPIA and UKIRT telescopes. The name was suggested by the first discoverer. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20001111/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1991 TE5 = 1969 EY1 = 1975 WF = 1979 WN2 = 1995 UF  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Feb-27 04:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin