+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11195 Woomera (1999 AY22) Classification: Main-belt Asteroid          SPK-ID: 2011195 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1140990101925452 3.1132e-08   a 2.32359526442009 6.5976e-09 au q 2.058475344661673 7.2919e-08 au i 3.057357110228401 3.0831e-06 deg node 292.0045323123024 5.9812e-05 deg peri 202.6952619336647 6.1353e-05 deg M 26.24519279788542 1.299e-05 deg tp 2458906.183773312434 (2020-Feb-26.68377331) 4.6672e-05 TDB period 1293.716600560065 3.54 5.5101e-06 1.509e-08 d yr n .2782680533311173 1.1852e-09 deg/d Q 2.588715184178508 7.3504e-09 au   Orbit Determination Parameters    # obs. used (total)      2336      data-arc span      23609 days (64.64 yr)      first obs. used      1955-10-24      last obs. used      2020-06-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45348      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 03:01:10   Additional Information  Earth MOID = 1.07297 au   Jupiter MOID = 2.44149 au   T_jup = 3.565  [ 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 14.2   n/a MPO347614   diameter diameter 8.283 km 0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.060   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11195 Woomera           Discovered 1999 Jan. 15 by F. B. Zoltowski at Woomera. Woomera, Aboriginal for spear thrower, is a village in the Australian outback founded in 1947 as a rocket rangehead. Woomera and its range played a key role in Australia's space program, culminating in the orbital launch of WRESAT in 1967. It was home to the discoverer for twelve years. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20001013/MPCPages.arc Last Updated: 2013-03-29 [ show close-approach data ] Alternate Designations  1999 AY22 = 1981 AD2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-24 14:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin