+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   298 Baptistina (A890 RB) Classification: Main-belt Asteroid          SPK-ID: 2000298 [ 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 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09647909376172027 3.4511e-08   a 2.263320535333534 5.2101e-09 au q 2.044957421192263 7.8353e-08 au i 6.285743084735027 4.054e-06 deg node 8.158752624574406 3.0418e-05 deg peri 135.151623782185 3.5897e-05 deg M 254.6813157077245 1.9472e-05 deg tp 2459364.348381039220 (2021-May-29.84838104) 6.7536e-05 TDB period 1243.705407585748 3.41 4.2945e-06 1.176e-08 d yr n .2894576141618807 9.9949e-10 deg/d Q 2.481683649474805 5.7128e-09 au   Orbit Determination Parameters    # obs. used (total)      2886      data-arc span      46992 days (128.66 yr)      first obs. used      1892-03-19      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43582      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:52:32   Additional Information  Earth MOID = 1.06187 au   Jupiter MOID = 2.51786 au   T_jup = 3.604  [ 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 11.2   n/a MPO347513   diameter diameter 21.135 km 0.368 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 16.23 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Majaess, D.J.; Higgins, D.; Molnar, L.A.; Haegert, M.J.; et al. (2009) J. Roy. Astron. Soc. Canada 103, 7.] [Warner, B.D. (2010) Minor Planet Bull. 37, 57-64.] [Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.] [Dykhuis, M.J.; Molnar, L.A.; Gates, C.J.; Gonzales, J.A.; et al. (2016) Icarus 267, 174-203.] geometric albedo albedo 0.131   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   298 Baptistina (A890 RB)          Discovered 1890-Sep-09 by Charlois, A. at Nice Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-17 18:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin