+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70745 Aleserpieri (1999 VZ20) Classification: Main-belt Asteroid          SPK-ID: 2070745 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05978106954661202 3.4415e-08   a 2.576368732196354 1.2028e-08 au q 2.422350653839207 9.0456e-08 au i 10.4485240278661 3.9804e-06 deg node 71.71396417615135 2.2434e-05 deg peri 325.6531536217283 4.1731e-05 deg M 50.60876243657654 3.5622e-05 deg tp 2458988.159090533543 (2020-May-18.65909053) 0.00014933 TDB period 1510.464269971499 4.14 1.0577e-05 2.896e-08 d yr n .238337315987483 1.669e-09 deg/d Q 2.730386810553501 1.2747e-08 au   Orbit Determination Parameters    # obs. used (total)      1374      data-arc span      14007 days (38.35 yr)      first obs. used      1982-11-07      last obs. used      2021-03-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4759      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 12:51:33   Additional Information  Earth MOID = 1.43756 au   Jupiter MOID = 2.56089 au   T_jup = 3.401  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.59   n/a E2021B10   diameter diameter 3.717 km 0.758 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.244   0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70745 Aleserpieri           Discovered 1999 Nov. 9 by V. Goretti at Pianoro. Italian scientist Alessandro Serpieri (1823-1885) was a teacher of mathematics and physics. As an astronomer, he determined the Perseid radiant and studied the solar eclipse of 1870 Dec. 22. He also analyzed the Italian earthquakes of 1872 and 1875. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050721/MPCPages.arc Last Updated: 2005-07-21 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-21 14:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin