+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1889 Pakhmutova (1968 BE) Classification: Main-belt Asteroid          SPK-ID: 2001889 [ 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 .1149844961782342 3.7743e-08   a 3.08577104155213 1.4821e-08 au q 2.730955213017873 1.1738e-07 au i 13.18050536264957 4.2658e-06 deg node 55.10464848304633 1.8961e-05 deg peri 84.14456244105817 2.6686e-05 deg M 215.0311960186235 1.8867e-05 deg tp 2459797.789474307391 (2022-Aug-06.28947431) 0.00010536 TDB period 1979.903281726277 5.42 1.4265e-05 3.906e-08 d yr n .1818270636362177 1.31e-09 deg/d Q 3.440586870086386 1.6526e-08 au   Orbit Determination Parameters    # obs. used (total)      2412      data-arc span      19646 days (53.79 yr)      first obs. used      1966-10-20      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43194      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:42:48   Additional Information  Earth MOID = 1.78424 au   Jupiter MOID = 1.75793 au   T_jup = 3.176  [ 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 11.1   n/a MPO347532   diameter diameter 35.243 km 0.626 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 17.490 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Warner, B.D. (2006) Minor Planet Bull. 33, 82-84.] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] geometric albedo albedo 0.057   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1889 Pakhmutova (1968 BE)          Discovered 1968-Jan-24 by Chernykh, L. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1968 BE = 1942 JM = 1966 US = 1969 JM  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-30 11:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin