+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58221 Boston (1993 BM14) Classification: Main-belt Asteroid          SPK-ID: 2058221 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1128475466284997 3.0965e-08   a 2.77258423795543 1.3305e-08 au q 2.459704908881311 8.9945e-08 au i 9.891886573843042 3.5093e-06 deg node 142.2581737833351 2.2618e-05 deg peri 330.122979884954 2.9691e-05 deg M 350.2322453461999 1.8379e-05 deg tp 2459046.252812237337 (2020-Jul-15.75281224) 8.6142e-05 TDB period 1686.263935697189 4.62 1.2138e-05 3.323e-08 d yr n .2134897108210747 1.5367e-09 deg/d Q 3.085463567029548 1.4806e-08 au   Orbit Determination Parameters    # obs. used (total)      1329      data-arc span      9946 days (27.23 yr)      first obs. used      1993-01-23      last obs. used      2020-04-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55576      source      ORB      producer      Otto Matic      solution date      2020-May-20 11:33:05   Additional Information  Earth MOID = 1.48116 au   Jupiter MOID = 2.0047 au   T_jup = 3.306  [ 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 14.4   n/a MPO319765   58221 Boston           Discovered 1993 Jan. 23 by E. W. Elst at the European Southern Observatory. Boston, founded in 1630 by Puritan settlers from England, is the capital and largest city of the American state of Massachusetts. Several of the most famous universities of the United States, including Harvard and MIT, are located in the Boston area. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2015-06-02 Last Updated: 2015-06-04 [ show close-approach data ] Alternate Designations  1993 BM14 = 2000 RR93  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-08 11:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin