+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .115150280068287 3.5029e-08   a 3.085652580830626 1.3641e-08 au q 2.730338821954547 1.1091e-07 au i 13.18068864786042 3.8359e-06 deg node 55.1034204564419 1.7044e-05 deg peri 84.10789621023551 2.4196e-05 deg M 251.456903537559 1.831e-05 deg tp 2459797.423494251731 (2022-Aug-05.92349425) 0.00010237 TDB period 1979.789272042576 5.42 1.3129e-05 3.595e-08 d yr n .1818375344708192 1.2058e-09 deg/d Q 3.440966339706706 1.5212e-08 au   Orbit Determination Parameters    # obs. used (total)      2884      data-arc span      19812 days (54.24 yr)      first obs. used      1966-10-20      last obs. used      2021-01-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40378      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:58:53   Additional Information  Earth MOID = 1.78353 au   Jupiter MOID = 1.75696 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 11.18   n/a E2021B10   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. 2020-October); 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 ] 2021-Feb-24 21:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin