+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   18484 (1995 YB3) Classification: Main-belt Asteroid          SPK-ID: 2018484 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1714181649244834 3.1073e-08   a 3.105832764738775 1.5493e-08 au q 2.57343661164492 9.4857e-08 au i 2.636710694970362 3.675e-06 deg node 96.68159798423962 7.6196e-05 deg peri 343.1810554382657 7.6962e-05 deg M 233.315223304024 1.2571e-05 deg tp 2459904.037833649800 (2022-Nov-20.53783365) 7.3173e-05 TDB period 1999.242740283985 5.47 1.4959e-05 4.096e-08 d yr n .180068179189118 1.3474e-09 deg/d Q 3.638228917832631 1.8149e-08 au   Orbit Determination Parameters    # obs. used (total)      1703      data-arc span      30556 days (83.66 yr)      first obs. used      1935-12-21      last obs. used      2019-08-18      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51024      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:29:55   Additional Information  Earth MOID = 1.58889 au   Jupiter MOID = 1.61365 au   T_jup = 3.196  [ 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 13.5   n/a MPO296286   diameter diameter 9.920 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.078   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   18484 (1995 YB3)          Discovered 1995-Dec-27 by JPL/GEODSS NEAT at Haleakala Reference: 20001111/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1995 YB3 = 1935 YE = 1984 YR = 1989 VG6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 14:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin