+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   109481 (2001 QR222) Classification: Outer Main-belt Asteroid          SPK-ID: 2109481 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1093264323504384 4.6725e-08   a 3.210923446372385 3.3092e-08 au q 2.859884641430118 1.475e-07 au i 8.95806694734431 5.8926e-06 deg node 208.0021236798787 3.2613e-05 deg peri 30.5284527054251 4.1871e-05 deg M 171.7195910528457 2.7099e-05 deg tp 2457998.054665898173 (2017-Sep-01.55466590) 0.00015565 TDB period 2101.567550120702 5.75 3.2489e-05 8.895e-08 d yr n .171300703600664 2.6482e-09 deg/d Q 3.561962251314652 3.671e-08 au   Orbit Determination Parameters    # obs. used (total)      467      data-arc span      8513 days (23.31 yr)      first obs. used      1996-10-06      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60141      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 03:26:36   Additional Information  Earth MOID = 1.85288 au   Jupiter MOID = 1.44108 au   T_jup = 3.163  [ 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 14.7   n/a MPO412772   diameter diameter 6.127 km 0.376 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   109481 (2001 QR222)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2001 QR222 = 2000 JD86  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-26 08:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin