+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14871 Pyramus (1990 TH7) Classification: Outer Main-belt Asteroid          SPK-ID: 2014871 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2193314236633221 4.0359e-08   a 3.299791641966682 1.9636e-08 au q 2.576043643341799 1.3514e-07 au i .9842526107314602 3.948e-06 deg node 5.717998163622585 0.00026395 deg peri 314.3055832872178 0.0002641 deg M 38.20445662355401 8.4623e-06 deg tp 2458768.151576274046 (2019-Oct-11.65157627) 5.1258e-05 TDB period 2189.415579589053 5.99 1.9542e-05 5.35e-08 d yr n .1644274405261933 1.4677e-09 deg/d Q 4.023539640591566 2.3942e-08 au   Orbit Determination Parameters    # obs. used (total)      1243      data-arc span      23859 days (65.32 yr)      first obs. used      1954-07-03      last obs. used      2019-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55007      source      ORB      producer      Otto Matic      solution date      2019-Nov-07 03:52:32   Additional Information  Earth MOID = 1.5633 au   Jupiter MOID = 1.30624 au   T_jup = 3.131  [ 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 absolute magnitude H 13.9   n/a MPO332957   diameter diameter 9.180 km 0.302 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.069   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14871 Pyramus           Discovered 1990 Oct. 13 by L. D. Schmadel and F. Börngen at Tautenburg. In classic literature, Pyramus and Thisbe are two lovers whose union is prevented by their opposing parents and whose lives end in a tragic double suicide. The two lovers are now finally united forever in the minor-planet belt. The name was proposed by H. Raab. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030106/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1990 TH7 = 1972 TJ3 = 1978 TW4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-18 12:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin