+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   26315 (1998 UF4) Classification: Main-belt Asteroid          SPK-ID: 2026315 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2446079458522614 3.3852e-08   a 2.320703695880396 8.0033e-09 au q 1.753041131899341 7.7463e-08 au i 11.20377888812684 3.9733e-06 deg node 104.9863683803537 2.7186e-05 deg peri 222.747938588033 2.9805e-05 deg M 98.80293096323102 1.1202e-05 deg tp 2458646.098709234529 (2019-Jun-11.59870923) 4.0114e-05 TDB period 1291.302428295871 3.54 6.6799e-06 1.829e-08 d yr n .2787882932080375 1.4422e-09 deg/d Q 2.888366259861451 9.9609e-09 au   Orbit Determination Parameters    # obs. used (total)      1201      data-arc span      8781 days (24.04 yr)      first obs. used      1996-01-12      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49195      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 00:42:41   Additional Information  Earth MOID = .758067 au   Jupiter MOID = 2.47925 au   T_jup = 3.513  [ 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 14.8   n/a MPO502354   diameter diameter 5.118 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.107   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   26315 (1998 UF4)          Discovered 1998-Oct-21 by Korlevic, K. at Visnjan Reference: 20010705/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 UF4 = 2000 EO167  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-15 06:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin