+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   150301 (1999 TD234) Classification: Main-belt Asteroid          SPK-ID: 2150301 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1443870968157408 4.6002e-08   a 3.154687313673368 2.9783e-08 au q 2.699191171090622 1.437e-07 au i 17.78412389392102 7.9113e-06 deg node 347.6820371066455 1.6265e-05 deg peri 104.7298345064106 3.196e-05 deg M 227.5621595228219 2.7076e-05 deg tp 2459953.409012232983 (2023-Jan-08.90901223) 0.00015678 TDB period 2046.59969860035 5.60 2.8982e-05 7.935e-08 d yr n .1759015210674567 2.491e-09 deg/d Q 3.610183456256114 3.4083e-08 au   Orbit Determination Parameters    # obs. used (total)      484      data-arc span      21431 days (58.67 yr)      first obs. used      1960-09-25      last obs. used      2019-05-30      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48883      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:17:58   Additional Information  Earth MOID = 1.78069 au   Jupiter MOID = 1.69182 au   T_jup = 3.117  [ 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 14.9   n/a MPO348330   diameter diameter 5.033 km 0.484 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.101   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   150301 (1999 TD234)          Discovered 1999-Oct-03 by LINEAR at Socorro Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ show close-approach data ] Alternate Designations  1999 TD234 = 2001 BM1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-15 15:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin