+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   637 Chrysothemis (A907 EN) Classification: Main-belt Asteroid          SPK-ID: 2000637 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1238418760445425 3.2885e-08   a 3.17360602622121 1.2209e-08 au q 2.780580702107709 1.0113e-07 au i .2708110771399083 3.7157e-06 deg node 353.3650615839169 0.00076113 deg peri 173.2854226899072 0.0007613 deg M 81.66026971508046 1.5367e-05 deg tp 2458732.079110641342 (2019-Sep-05.57911064) 8.7917e-05 TDB period 2065.037511601251 5.65 1.1916e-05 3.262e-08 d yr n .1743309736397245 1.0059e-09 deg/d Q 3.56663135033471 1.372e-08 au   Orbit Determination Parameters    # obs. used (total)      3281      data-arc span      41443 days (113.46 yr)      first obs. used      1907-03-21      last obs. used      2020-09-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42126      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:27:27   Additional Information  Earth MOID = 1.78725 au   Jupiter MOID = 1.40638 au   T_jup = 3.189  [ 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 11.62   n/a E2021B10   diameter diameter 24.194 km 0.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 3.7 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong. Published Reference List: [Warner, B.D. (2017) Minor Planet Bull. 44, 12-19.] geometric albedo albedo 0.080   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   637 Chrysothemis (A907 EN)          Discovered 1907-Mar-11 by Metcalf, J. H. at Taunton Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A907 EN = 1930 GC = 1955 UV = 1975 JM  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-09 05:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin