+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   150279 (1999 TG49) Classification: Main-belt Asteroid          SPK-ID: 2150279 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2019657872968702 5.6118e-08   a 3.190245661798594 2.4588e-08 au q 2.545925185043016 1.8417e-07 au i 2.092639771883669 5.1285e-06 deg node 129.4363986969574 0.00016951 deg peri 240.1910627048086 0.00016995 deg M 262.2982863662305 1.4742e-05 deg tp 2459765.351514231697 (2022-Jul-04.85151423) 8.9681e-05 TDB period 2081.299677973369 5.70 2.4061e-05 6.588e-08 d yr n .1729688443283401 1.9997e-09 deg/d Q 3.834566138554172 2.9554e-08 au   Orbit Determination Parameters    # obs. used (total)      441      data-arc span      8865 days (24.27 yr)      first obs. used      1996-03-17      last obs. used      2020-06-24      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .57979      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:17:53   Additional Information  Earth MOID = 1.54476 au   Jupiter MOID = 1.62938 au   T_jup = 3.164  [ 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 15.42   n/a E2021B55   diameter diameter 3.981 km 0.969 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.085   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   150279 (1999 TG49)          Discovered 1999-Oct-04 by Spacewatch at Kitt Peak Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ show close-approach data ] Alternate Designations  1999 TG49 = 2005 UD19  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 12:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin