+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249003 (2007 NA) Classification: Main-belt Asteroid          SPK-ID: 2249003 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08075336360559483 7.6337e-08   a 3.148207280528239 4.5707e-08 au q 2.893978953297961 2.3906e-07 au i 27.74464204742086 9.2095e-06 deg node 251.4411620420297 1.149e-05 deg peri 327.66636961 4.7526e-05 deg M 225.9541097276874 5.1013e-05 deg tp 2459760.203991039433 (2022-Jun-29.70399104) 0.00029529 TDB period 2040.29706706112 5.59 4.4433e-05 1.217e-07 d yr n .1764448941342402 3.8425e-09 deg/d Q 3.402435607758517 4.9398e-08 au   Orbit Determination Parameters    # obs. used (total)      406      data-arc span      6781 days (18.57 yr)      first obs. used      2001-07-01      last obs. used      2020-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44358      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 10:18:42   Additional Information  Earth MOID = 1.90243 au   Jupiter MOID = 1.69513 au   T_jup = 3.025  [ 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 14.3   n/a MPO454844   diameter diameter 7.683 km 0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.069   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   249003 (2007 NA)          Discovered 2007-Jul-04 by Mt. Lemmon Survey at Mount Lemmon Reference: 20100824/Numbers.arc Last Updated: 2010-08-27 [ show close-approach data ] Alternate Designations  2007 NA = 2005 EN318 = 2008 VG44  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-09 02:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin