+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1094 Siberia (1926 CB) Classification: Main-belt Asteroid          SPK-ID: 2001094 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1331498193735366 3.3843e-08   a 2.544473516436881 7.2739e-09 au q 2.205677327322563 8.5384e-08 au i 14.02751155408006 3.0289e-06 deg node 149.1290686606635 1.7934e-05 deg peri 310.0785642530098 2.2928e-05 deg M 104.1148111204114 1.4789e-05 deg tp 2458571.748804354636 (2019-Mar-29.24880435) 6.0763e-05 TDB period 1482.502141350674 4.06 6.3571e-06 1.74e-08 d yr n .2428327015244727 1.0413e-09 deg/d Q 2.883269705551199 8.2425e-09 au   Orbit Determination Parameters    # obs. used (total)      3015      data-arc span      31147 days (85.28 yr)      first obs. used      1935-06-06      last obs. used      2020-09-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .39045      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:22:34   Additional Information  Earth MOID = 1.24756 au   Jupiter MOID = 2.27298 au   T_jup = 3.390  [ 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 11.7   n/a MPO467623   diameter diameter 17.869 km 0.180 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 21.15 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: [Bembrick, C.; Crawford, G.; Oey, J.; Allen, B. (2007) Minor Planet Bull. 34, 67-68.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.127   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   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) 1094 Siberia (1926 CB)          Discovered 1926-Feb-12 by Belyavskij, S. at Simeis Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1926 CB = A918 EJ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 21:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin