+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101264 (1998 SW105) Classification: Main-belt Asteroid          SPK-ID: 2101264 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1467579837954548 4.5082e-08   a 3.066996919162686 2.0688e-08 au q 2.616890634999498 1.3878e-07 au i 11.29770344140858 5.776e-06 deg node 178.1572185550787 2.0441e-05 deg peri 221.0730641193755 2.613e-05 deg M 349.6743112894007 1.5418e-05 deg tp 2459056.771042856142 (2020-Jul-26.27104286) 8.4055e-05 TDB period 1961.861915071731 5.37 1.985e-05 5.435e-08 d yr n .1834991531434247 1.8566e-09 deg/d Q 3.517103203325874 2.3724e-08 au   Orbit Determination Parameters    # obs. used (total)      481      data-arc span      9000 days (24.64 yr)      first obs. used      1996-03-27      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5542      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:29:00   Additional Information  Earth MOID = 1.63517 au   Jupiter MOID = 1.97336 au   T_jup = 3.186  [ 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 15.0   n/a MPO439693   diameter diameter 3.089 km 0.486 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.203   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101264 (1998 SW105)          Discovered 1998-Sep-26 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ 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 1958-Dec-06 23:25 00:02 Jupiter 1.9760598359209 1.97605929627867 1.97606037556391 3.0092091476755 2.86322465334008 2436544.475634963 1.72631511985248 117.242457526865 21.0899778672929 -81.4747930506158 2271045.34160815 T 19 CATAB v2.0f-lin.ifort 2020-Dec-17 22:29:00 2020-Dec-17 22:29 2017-Sep-15 15:38 < 00:01 Jupiter 1.96391718436801 1.96391671548623 1.96391765324968 3.29382529202014 3.16017409253437 2458012.151408206 0.271442893195948 58.2651897278529 19.9231222078876 89.10496336471 2659025.35996739 T 19 CATAB v2.0f-lin.ifort 2020-Dec-17 22:29:00 2020-Dec-17 22:29 2076-Jun-29 23:27 00:02 Jupiter 1.99256812590322 1.99256754103103 1.99256871077678 3.56747688992688 3.44626023720446 2479484.477132854 1.76418845230317 151.480136242211 20.5631422216013 84.6837034325115 2556023.10500776 T 19 CATAB v2.0f-lin.ifort 2020-Dec-17 22:29:00 2020-Dec-17 22:29 2184-Apr-30 13:40 00:05 Jupiter 1.98392950151509 1.98392888816996 1.98393011486671 2.88379809474884 2.73174079429998 2518870.069708559 5.14747442779364 295.140336840388 21.0060952700362 -81.2129886940055 1937125.97477114 T 19 CATAB v2.0f-lin.ifort 2020-Dec-17 22:29:00 2020-Dec-17 22:29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 08:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin