+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   390029 (2012 UZ40) Classification: Main-belt Asteroid          SPK-ID: 2390029 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06876873185634083 5.6223e-08   a 2.646431120761675 2.4337e-08 au q 2.46443940864174 1.4252e-07 au i 11.80320879595304 5.5905e-06 deg node 36.30697942629912 2.7673e-05 deg peri 98.17571293072433 4.8419e-05 deg M 179.0680104182886 4.059e-05 deg tp 2458218.323386198422 (2018-Apr-09.82338620) 0.00017553 TDB period 1572.495167120086 4.31 2.1691e-05 5.939e-08 d yr n .2289355207744865 3.158e-09 deg/d Q 2.82842283288161 2.6011e-08 au   Orbit Determination Parameters    # obs. used (total)      178      data-arc span      9122 days (24.97 yr)      first obs. used      1995-11-18      last obs. used      2020-11-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65877      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 06:51:00   Additional Information  Earth MOID = 1.51026 au   Jupiter MOID = 2.2228 au   T_jup = 3.359  [ 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 16.6   n/a MPO437596   diameter diameter 2.028 km 0.559 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.082   0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   390029 (2012 UZ40)          Discovered 1995-Nov-18 by Spacewatch at Kitt Peak Reference: Last Updated: 2014-03-21 [ show close-approach data ] Alternate Designations  2012 UZ40 = 1995 WK26 = 2008 UH71 = 2010 MZ60  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 18:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin