+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15041 Paperetti (1998 XB5) Classification: Main-belt Asteroid          SPK-ID: 2015041 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1647196072130846 3.449e-08   a 2.256558780571889 6.5165e-09 au q 1.884859304582851 7.7452e-08 au i 5.774672214465821 4.4562e-06 deg node 181.4774657225505 3.2615e-05 deg peri 147.3509828904022 3.4932e-05 deg M 214.1688468886414 1.3138e-05 deg tp 2459502.052283698117 (2021-Oct-14.55228370) 4.61e-05 TDB period 1238.136147723149 3.39 5.3632e-06 1.468e-08 d yr n .290759623375843 1.2595e-09 deg/d Q 2.628258256560927 7.5899e-09 au   Orbit Determination Parameters    # obs. used (total)      1470      data-arc span      13004 days (35.60 yr)      first obs. used      1984-09-21      last obs. used      2020-04-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4967      source      ORB      producer      Otto Matic      solution date      2020-May-20 04:07:17   Additional Information  Earth MOID = .877116 au   Jupiter MOID = 2.72364 au   T_jup = 3.598  [ 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 15.0   n/a MPO395149   diameter diameter 2.532 km 0.627 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.331   0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15041 Paperetti           Discovered 1998 Dec. 8 by L. Tesi and A. Boattini at San Marcello Pistoiese. Emiliano Paperetti (b. 1951) is an amateur astronomer who lives in the Tuscan city of Pistoia. Among his primary interests there is the development of astronomical software that also served the team involved in research on minor planets at San Marcello Pistoiese. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010705/MPCPages.arc Last Updated: 2009-05-11 [ show close-approach data ] Alternate Designations  1998 XB5 = 1984 SM8 = 1997 JK18  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-26 20:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin