+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7553 Buie (1981 FG) Classification: Main-belt Asteroid          SPK-ID: 2007553 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1475447114693214 3.8482e-08   a 2.390449654614533 7.8413e-09 au q 2.037751450042493 9.0618e-08 au i 3.278736794034105 3.1831e-06 deg node 74.69374696117282 7.3374e-05 deg peri 95.32735688073967 7.4133e-05 deg M 228.9211124037947 1.1518e-05 deg tp 2459492.027788096051 (2021-Oct-04.52778810) 4.4185e-05 TDB period 1349.950453193356 3.70 6.6423e-06 1.819e-08 d yr n .2666764540494113 1.3122e-09 deg/d Q 2.743147859186573 8.9982e-09 au   Orbit Determination Parameters    # obs. used (total)      1551      data-arc span      25163 days (68.89 yr)      first obs. used      1950-12-09      last obs. used      2019-10-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51102      source      ORB      producer      Otto Matic      solution date      2019-Nov-07 03:03:22   Additional Information  Earth MOID = 1.04686 au   Jupiter MOID = 2.22691 au   T_jup = 3.515  [ 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 MPO302111   diameter diameter 3.442 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 4.245 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] geometric albedo albedo 0.259   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   7553 Buie           Discovered 1981 Mar. 30 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory. Named in honor of Marc W. Buie (b. 1958), an astronomer at Lowell Observatory, who has made many important contributions to planetary astronomy. These include the identification of water ice on Pluto's satellite Charon, constraints on the albedo and frost distribution on Pluto and Charon and improvements in our knowledge of Charon's orbit. Buie is also a codiscoverer of several transneptunian objects and has developed a wide variety of astronomical software used at Lowell Observatory and elsewhere. Citation provided by J. R. Spencer at the request of the discoverer. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19990728/MPCPages.arc Last Updated: 2010-06-11 [ show close-approach data ] Alternate Designations  1981 FG = 1988 AJ3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-10 20:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin