+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11136 Shirleymarinus (1996 XW12) Classification: Main-belt Asteroid          SPK-ID: 2011136 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1514285814700781 3.3798e-08   a 2.372364906626348 7.896e-09 au q 2.013121054086526 7.9602e-08 au i 7.530963133673734 3.0991e-06 deg node 87.94539833850195 2.6489e-05 deg peri 266.8503332483169 2.8426e-05 deg M 207.605727338593 1.235e-05 deg tp 2459565.484857531388 (2021-Dec-16.98485753) 4.7137e-05 TDB period 1334.660057489209 3.65 6.6632e-06 1.824e-08 d yr n .269731605422612 1.3466e-09 deg/d Q 2.731608759166171 9.0916e-09 au   Orbit Determination Parameters    # obs. used (total)      2058      data-arc span      9667 days (26.47 yr)      first obs. used      1994-01-17      last obs. used      2020-07-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49238      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 03:01:35   Additional Information  Earth MOID = 1.02517 au   Jupiter MOID = 2.72278 au   T_jup = 3.517  [ hide covariance matrix ] Orbital Elements at Epoch 2456903.5 (2014-Sep-03.0) TDB Reference: JPL 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1510657519942385 3.3769e-08   q 2.014376923835316 7.953e-08 au tp 2456892.889273773893 (2014-Aug-23.38927377) 4.209e-05 TDB node 88.06035013874417 2.6483e-05 deg peri 266.1848411806807 2.8433e-05 deg i 7.531266005540846 3.0988e-06 deg   Orbit Determination Parameters    # obs. used (total)      2058      data-arc span      9667 days (26.47 yr)      first obs. used      1994-01-17      last obs. used      2020-07-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49238      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 03:01:35   Additional Information  Jupiter MOID = 2.72278 au   T_jup = 3.517  Orbit Covariance (6×6)   e q tp node peri i e 1.140340981665914E-15 -2.676201336128534E-15 3.224682723732666E-13 -4.259835447121667E-15 6.311009360407539E-14 3.656803639529287E-16 q -2.676201336128534E-15 6.325068226374252E-15 -6.904251466183583E-13 1.017970700081775E-14 -1.325895252633626E-13 -7.839880922205417E-16 tp 3.224682723732666E-13 -6.904251466183583E-13 1.771569470018486E-9 1.815926413224983E-12 4.486436385576687E-10 -2.653924313950397E-13 node -4.259835447121667E-15 1.017970700081775E-14 1.815926413224983E-12 7.013406462520402E-10 -6.944478132075174E-10 -4.782216311548108E-12 peri 6.311009360407539E-14 -1.325895252633626E-13 4.486436385576687E-10 -6.944478132075174E-10 8.084084149643889E-10 4.651428846780261E-12 i 3.656803639529287E-16 -7.839880922205417E-16 -2.653924313950397E-13 -4.782216311548108E-12 4.651428846780261E-12 9.602757687373962E-12 [ 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 14.0   n/a MPO350891   diameter diameter 3.808 km 0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.403   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11136 Shirleymarinus           Discovered 1996 Dec. 8 by Spacewatch at Kitt Peak. Shirley Marinus (b. 1921) served during a third of a century as secretary in the Lunar and Planetary Laboratory for the Polariscope program, the Imaging Photopolarimeters on Pioneers 10 and 11, the Space Science Series textbooks, and the Spacewatch survey of comets and minor planets. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010705/MPCPages.arc Last Updated: 2009-05-11 [ show close-approach data ] Alternate Designations  1996 XW12 = 1994 BR  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-27 01:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin