+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2099 Opik (1977 VB) Classification: Mars-crossing Asteroid          SPK-ID: 2002099 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3603381872821039 3.8322e-08   a 2.304358977463226 2.8865e-09 au q 1.474010440676885 8.7982e-08 au i 26.95165590522535 5.0679e-06 deg node 218.8188768748151 6.5776e-06 deg peri 159.3718897593247 1.0116e-05 deg M 70.1546611310437 4.9642e-06 deg tp 2458751.512433752993 (2019-Sep-25.01243375) 1.7483e-05 TDB period 1277.684510249292 3.50 2.4007e-06 6.573e-09 d yr n .2817596966325901 5.294e-10 deg/d Q 3.134707514249568 3.9266e-09 au   Orbit Determination Parameters    # obs. used (total)      1342      data-arc span      23124 days (63.31 yr)      first obs. used      1956-12-01      last obs. used      2020-03-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41361      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:12:37   Additional Information  Earth MOID = .495548 au   Jupiter MOID = 2.38005 au   T_jup = 3.365  [ 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 15.14   n/a E2021B10   diameter diameter 5.180 km 1.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   rotation period rot_per 6.4430 h n/a LCDB (Rev. 2020-October); 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: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.056   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   B-V BV 0.690   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=22.02 deg. U-B UB 0.350   0.057 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=22.02 deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices SMASSII spectral type spec_B Ch   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) 2099 Opik (1977 VB)          Discovered 1977-Nov-08 by Helin, E. F. at Palomar and E. M. Shoemaker Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1977 VB = 1977 UL2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-01 02:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin