+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227781 (2006 WM153) Classification: Main-belt Asteroid          SPK-ID: 2227781 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1160104298372936 7.9173e-08   a 2.258077049520279 1.4718e-08 au q 1.996116560399704 1.8633e-07 au i 1.68556428941436 9.2443e-06 deg node 10.06133259866201 0.00021369 deg peri 53.32505810474552 0.00021765 deg M 80.80515225030963 4.1064e-05 deg tp 2458922.308975381378 (2020-Mar-13.80897538) 0.0001402 TDB period 1239.385931140549 3.39 1.2117e-05 3.317e-08 d yr n .2904664245048423 2.8398e-09 deg/d Q 2.520037538640854 1.6425e-08 au   Orbit Determination Parameters    # obs. used (total)      151      data-arc span      9358 days (25.62 yr)      first obs. used      1994-04-12      last obs. used      2019-11-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59139      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 02:24:50   Additional Information  Earth MOID = 1.00912 au   Jupiter MOID = 2.7372 au   T_jup = 3.612  [ 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 17.7   n/a MPO287931   diameter diameter 1.451 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.064   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   227781 (2006 WM153)          Discovered 2006-Nov-21 by Mt. Lemmon Survey at Mount Lemmon Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ show close-approach data ] Alternate Designations  2006 WM153 = 1994 GV7  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-12 05:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin