+ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1369437950978259 5.2481e-08   a 3.126758798157355 2.8926e-08 au q 2.698568581982169 1.7818e-07 au i 5.470196713599818 4.5424e-06 deg node 142.812990299976 5.4259e-05 deg peri 189.5798667454534 5.7806e-05 deg M 291.9921640304694 2.0737e-05 deg tp 2459382.001678094529 (2021-Jun-16.50167809) 0.00011874 TDB period 2019.482051679498 5.53 2.8023e-05 7.672e-08 d yr n .1782635303446281 2.4737e-09 deg/d Q 3.55494901433254 3.2887e-08 au   Orbit Determination Parameters    # obs. used (total)      358      data-arc span      21840 days (59.79 yr)      first obs. used      1960-09-24      last obs. used      2020-07-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61568      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 17:57:57   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 15.78   n/a E2021B55   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 ] 2021-Mar-01 16:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin