+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2681 Ostrovskij (1975 VF2) Classification: Main-belt Asteroid          SPK-ID: 2002681 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1923267691101981 3.5464e-08   a 2.746561929622124 1.1124e-08 au q 2.218324547536829 9.9014e-08 au i 3.97575459282332 2.8427e-06 deg node 66.74449743802255 5.8142e-05 deg peri 61.57806919210741 5.8701e-05 deg M 196.7152183348068 1.062e-05 deg tp 2459754.594424717195 (2022-Jun-24.09442472) 5.1289e-05 TDB period 1662.579881172474 4.55 1.0101e-05 2.766e-08 d yr n .2165309493256487 1.3155e-09 deg/d Q 3.274799311707419 1.3264e-08 au   Orbit Determination Parameters    # obs. used (total)      2421      data-arc span      19220 days (52.62 yr)      first obs. used      1968-03-27      last obs. used      2020-11-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41692      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:07:43   Additional Information  Earth MOID = 1.23673 au   Jupiter MOID = 1.79864 au   T_jup = 3.317  [ 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 12.3   n/a MPO332842   diameter diameter 13.297 km 0.393 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 4.2231 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Brincat, S.M.; Baldies, C. (2018) Minor Planet Bull. 45, 244-245.] geometric albedo albedo 0.120   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   SMASSII spectral type spec_B Xk   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 2681 Ostrovskij (1975 VF2)          Discovered 1975-Nov-02 by Smirnova, T. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1975 VF2 = 1968 FZ = 1972 AF = 1977 DV4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-18 18:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin