+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120689 (1997 EG5) Classification: Main-belt Asteroid          SPK-ID: 2120689 [ 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 .1066500243754853 4.5691e-08   a 2.732310611008761 1.5118e-08 au q 2.44090961774328 1.2359e-07 au i 1.047530213137102 5.2217e-06 deg node 185.3707206088755 0.00025049 deg peri 31.69984600689586 0.00025144 deg M 18.97292073687987 2.179e-05 deg tp 2458913.558881810220 (2020-Mar-05.05888181) 9.9731e-05 TDB period 1649.65652797366 4.52 1.3692e-05 3.749e-08 d yr n .2182272454267815 1.8112e-09 deg/d Q 3.023711604274243 1.673e-08 au   Orbit Determination Parameters    # obs. used (total)      426      data-arc span      8449 days (23.13 yr)      first obs. used      1997-03-04      last obs. used      2020-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58212      source      ORB      producer      Otto Matic      solution date      2020-May-20 20:39:27   Additional Information  Earth MOID = 1.43368 au   Jupiter MOID = 1.94419 au   T_jup = 3.345  [ 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 16.3   n/a MPO426760   diameter diameter 4.160 km 0.465 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.028   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   120689 (1997 EG5)          Discovered 1997-Mar-04 by Spacewatch at Kitt Peak Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ show close-approach data ] Alternate Designations  1997 EG5 = 1999 UW34  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-01 02:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin