+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227536 (2005 YB91) Classification: Main-belt Asteroid          SPK-ID: 2227536 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .03100509830094336 5.2491e-08   a 3.00169404048705 3.4683e-08 au q 2.908626221692393 1.6138e-07 au i 4.970258713280748 5.1192e-06 deg node 272.4146231672818 7.8009e-05 deg peri 38.19681866662889 0.00012947 deg M 122.5776266650322 0.00010259 deg tp 2458553.719721648847 (2019-Mar-11.21972165) 0.00054353 TDB period 1899.538329639055 5.20 3.2922e-05 9.014e-08 d yr n .1895197345496083 3.2847e-09 deg/d Q 3.094761859281707 3.5758e-08 au   Orbit Determination Parameters    # obs. used (total)      253      data-arc span      6378 days (17.46 yr)      first obs. used      2003-07-24      last obs. used      2021-01-08      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .54566      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 00:40:09   Additional Information  Earth MOID = 1.89363 au   Jupiter MOID = 2.00777 au   T_jup = 3.246  [ 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 15.6   n/a MPO454634   diameter diameter 4.907 km 0.433 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.042   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   227536 (2005 YB91)          Discovered 2005-Dec-26 by Mt. Lemmon Survey at Mount Lemmon Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ show close-approach data ] Alternate Designations  2005 YB91 = 2003 OX24  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-20 21:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin