+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   18581 Batllo (1997 XV8) Classification: Main-belt Asteroid          SPK-ID: 2018581 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0459119152847919 4.1789e-08   a 2.355376736627938 7.7155e-09 au q 2.247236879432107 9.895e-08 au i 6.689830918399085 3.8313e-06 deg node 309.3091742047018 2.9411e-05 deg peri 225.8147394556872 4.6261e-05 deg M 23.82816456119922 3.4619e-05 deg tp 2458913.106911272455 (2020-Mar-04.60691127) 0.00012704 TDB period 1320.349784437319 3.61 6.4876e-06 1.776e-08 d yr n .2726550223609251 1.3397e-09 deg/d Q 2.46351659382377 8.0698e-09 au   Orbit Determination Parameters    # obs. used (total)      2269      data-arc span      24420 days (66.86 yr)      first obs. used      1953-10-09      last obs. used      2020-08-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45547      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:14:07   Additional Information  Earth MOID = 1.25853 au   Jupiter MOID = 2.52808 au   T_jup = 3.544  [ 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 13.8   n/a MPO416907   diameter diameter 4.187 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.231   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   18581 Batllo           Discovered 1997 Dec. 7 by the OCA-DLR Asteroid Survey at Caussols. Valerie Batllo (b. 1967) works on cometary orbits at the Institut de Mécanique Céleste in Paris. She studies in particular how the short-period comets could be produced by encounters with the giant planets. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020427/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1997 XV8 = 1991 EW8 = 1996 TZ58  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-01 19:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin