+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   26287 (1998 SD67) Classification: Main-belt Asteroid          SPK-ID: 2026287 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1924302265022109 3.2962e-08   a 2.228326997982755 6.0233e-09 au q 1.799529529039942 7.2027e-08 au i 5.936702219158387 4.0623e-06 deg node 48.38761080462685 2.8442e-05 deg peri 299.243286861268 3.028e-05 deg M 206.2201354432949 1.1353e-05 deg tp 2459519.495728365669 (2021-Oct-31.99572837) 3.9176e-05 TDB period 1214.973512626198 3.33 4.9262e-06 1.349e-08 d yr n .2963027557875318 1.2014e-09 deg/d Q 2.657124466925568 7.1824e-09 au   Orbit Determination Parameters    # obs. used (total)      1954      data-arc span      25659 days (70.25 yr)      first obs. used      1950-03-21      last obs. used      2020-06-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47124      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:29:48   Additional Information  Earth MOID = .802443 au   Jupiter MOID = 2.77669 au   T_jup = 3.613  [ 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 14.46   n/a E2021B10   diameter diameter 4.165 km 0.248 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 10.648 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Folberth, J.; Casimir, S.; Dou, Y.; Evans, D; et al. (2012) Minor Planet Bull. 39, 51-55.] geometric albedo albedo 0.280   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   26287 (1998 SD67)          Discovered 1998-Sep-20 by Elst, E. W. at La Silla Reference: 20010705/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 SD67 = 1978 TV4 = 1988 VF5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-01 02:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin