+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70427 (1999 TB1) Classification: Main-belt Asteroid          SPK-ID: 2070427 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2359968110017705 3.2501e-08   a 2.369480268683322 7.6796e-09 au q 1.81029048154244 7.909e-08 au i 4.724178354285243 3.7025e-06 deg node 208.5582890046405 4.7576e-05 deg peri 179.7249755435811 4.8376e-05 deg M 231.9517264794387 1.0649e-05 deg tp 2459474.359179582655 (2021-Sep-16.85917958) 4.0983e-05 TDB period 1332.22651082729 3.65 6.4767e-06 1.773e-08 d yr n .2702243177674388 1.3137e-09 deg/d Q 2.928670055824204 9.492e-09 au   Orbit Determination Parameters    # obs. used (total)      1341      data-arc span      11579 days (31.70 yr)      first obs. used      1988-10-03      last obs. used      2020-06-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52289      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 23:35:29   Additional Information  Earth MOID = .81518 au   Jupiter MOID = 2.51934 au   T_jup = 3.503  [ 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 15.3   n/a MPO381744   diameter diameter 5.562 km 0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.051   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70427 (1999 TB1)          Discovered 1999-Oct-01 by Korlevic, K. at Visnjan Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 TB1 = 1988 TB2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-24 16:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin