+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   214394 (2005 NR2) Classification: Main-belt Asteroid          SPK-ID: 2214394 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2234228368548839 7.4482e-08   a 2.773364767175687 1.5291e-08 au q 2.153731743259911 2.0743e-07 au i 1.609545003423658 7.9784e-06 deg node 172.4615666213128 0.00017783 deg peri 143.2202986313676 0.0001785 deg M 71.24327055963268 1.2188e-05 deg tp 2458666.650857219745 (2019-Jul-02.15085722) 5.708e-05 TDB period 1686.976053412554 4.62 1.3952e-05 3.82e-08 d yr n .2133995911037163 1.7649e-09 deg/d Q 3.392997791091463 1.8708e-08 au   Orbit Determination Parameters    # obs. used (total)      277      data-arc span      6554 days (17.94 yr)      first obs. used      2001-11-20      last obs. used      2019-10-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50923      source      ORB      producer      Otto Matic      solution date      2019-Nov-07 23:54:08   Additional Information  Earth MOID = 1.14039 au   Jupiter MOID = 1.91614 au   T_jup = 3.299  [ 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 16.5   n/a MPO440132   diameter diameter 2.329 km 0.574 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.108   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   214394 (2005 NR2)          Discovered 2005-Jul-02 by Spacewatch at Kitt Peak Reference: 20090509/Numbers.arc Last Updated: 2009-05-11 [ show close-approach data ] Alternate Designations  2005 NR2 = 2001 WK68  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-12 18:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin