+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249362 (2008 YR137) Classification: Main-belt Asteroid          SPK-ID: 2249362 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0613309395023216 6.2688e-08   a 3.139798658561168 4.3189e-08 au q 2.947231856983483 1.9807e-07 au i 9.325451716699314 6.9494e-06 deg node 280.4345765496228 3.5335e-05 deg peri 359.3293096398562 6.1671e-05 deg M 221.5100076372387 5.3867e-05 deg tp 2459782.248428325320 (2022-Jul-21.74842833) 0.0003104 TDB period 2032.128310469813 5.56 4.1929e-05 1.148e-07 d yr n .177154167945611 3.6552e-09 deg/d Q 3.332365460138853 4.5838e-08 au   Orbit Determination Parameters    # obs. used (total)      203      data-arc span      4912 days (13.45 yr)      first obs. used      2006-08-22      last obs. used      2020-02-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54239      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 10:22:18   Additional Information  Earth MOID = 1.93077 au   Jupiter MOID = 1.79708 au   T_jup = 3.187  [ 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 15.4   n/a MPO422968   diameter diameter 3.679 km 0.838 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.099   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   249362 (2008 YR137)          Discovered 2008-Dec-30 by Mt. Lemmon Survey at Mount Lemmon Reference: 20100824/Numbers.arc Last Updated: 2010-08-27 [ show close-approach data ] Alternate Designations  2008 YR137 = 2006 QU131  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-13 11:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin