+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2446414272053289 3.3792e-08   a 2.320878799004459 7.787e-09 au q 1.753095697245418 7.7239e-08 au i 11.2033098264196 3.7746e-06 deg node 104.9858576865378 2.393e-05 deg peri 222.7769143712692 2.5933e-05 deg M 154.5136593657936 9.9107e-06 deg tp 2458646.204317053269 (2019-Jun-11.70431705) 3.5026e-05 TDB period 1291.44857923803 3.54 6.4996e-06 1.779e-08 d yr n .2787567432320102 1.4029e-09 deg/d Q 2.888661900763499 9.692e-09 au   Orbit Determination Parameters    # obs. used (total)      1279      data-arc span      9144 days (25.03 yr)      first obs. used      1996-01-12      last obs. used      2021-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49394      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 03:18:46   Additional Information  Earth MOID = .756231 au   Jupiter MOID = 2.47911 au   T_jup = 3.512  [ 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 14.83   n/a E2021B10   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 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2172-Jul-13 15:38 00:06 David 0.0441068184205245 0.0440892381887983 0.0441244013885719 4.67821742786058 4.67821735464611 2514561.151293750 5.68234517421325 1033.91635168536 58.4662345239074 -32.1169862998825 60202.1176116305 T 27 CATAB v2.0f-lin.ifort 2021-Feb-24 03:18:49 2021-Feb-24 03:18 Alternate Designations  1998 UF4 = 2000 EO167  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-25 06:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin