+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120331 (2004 NP26) Classification: Main-belt Asteroid          SPK-ID: 2120331 [ 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 .1369437985903032 5.5346e-08   a 3.126758801210739 3.2089e-08 au q 2.698568573697278 1.8329e-07 au i 5.4701925928957 5.7659e-06 deg node 142.8129817206859 5.4894e-05 deg peri 189.5798754557457 5.842e-05 deg M 291.9921631125939 2.1012e-05 deg tp 2459382.001683802333 (2021-Jun-16.50168380) 0.00012067 TDB period 2019.482054637635 5.53 3.1088e-05 8.511e-08 d yr n .1782635300835077 2.7442e-09 deg/d Q 3.554949028724201 3.6483e-08 au   Orbit Determination Parameters    # obs. used (total)      312      data-arc span      21766 days (59.59 yr)      first obs. used      1960-09-24      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61726      source      ORB      producer      Otto Matic      solution date      2020-May-20 20:36:49   Additional Information  Earth MOID = 1.68824 au   Jupiter MOID = 1.8049 au   T_jup = 3.193  [ 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 MPO436581   diameter diameter 3.285 km 1.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.103   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   120331 (2004 NP26)          Discovered 2004-Jul-11 by LINEAR at Socorro Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ show close-approach data ] Alternate Designations  2004 NP26 = 2004 NB30 = 6860 P-L  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-26 15:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin