+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20404 (1998 OB14) Classification: Main-belt Asteroid          SPK-ID: 2020404 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08680766798450353 4.4575e-08   a 2.750581061169274 1.6015e-08 au q 2.511809533646828 1.2428e-07 au i 18.23939185786912 6.4458e-06 deg node 325.7126682903357 1.3651e-05 deg peri 243.5814747419245 3.5752e-05 deg M 75.58231857334489 3.3517e-05 deg tp 2458850.673416279536 (2020-Jan-02.17341628) 0.00015478 TDB period 1666.230575040609 4.56 1.4552e-05 3.984e-08 d yr n .216056532266686 1.8869e-09 deg/d Q 2.98935258869172 1.7405e-08 au   Orbit Determination Parameters    # obs. used (total)      1241      data-arc span      13636 days (37.33 yr)      first obs. used      1983-04-15      last obs. used      2020-08-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51209      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:19:43   Additional Information  Earth MOID = 1.56332 au   Jupiter MOID = 2.12361 au   T_jup = 3.268  [ 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 13.92   n/a E2021B10   diameter diameter 5.038 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.175   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20404 (1998 OB14)          Discovered 1998-Jul-26 by Elst, E. W. at La Silla Reference: 20010109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 OB14 = 1985 RY4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 12:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin