+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1054 Forsytia (1925 WD) Classification: Main-belt Asteroid          SPK-ID: 2001054 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1338190038967128 3.341e-08   a 2.921521539815072 1.2237e-08 au q 2.530566437494228 9.9145e-08 au i 10.87179755622336 4.1184e-06 deg node 85.77269191703142 1.9468e-05 deg peri 295.5370001337821 2.4831e-05 deg M .6979908113631771 1.6135e-05 deg tp 2458996.963617192985 (2020-May-27.46361719) 8.1741e-05 TDB period 1823.946375510152 4.99 1.146e-05 3.138e-08 d yr n .1973742237346803 1.2401e-09 deg/d Q 3.312476642135915 1.3875e-08 au   Orbit Determination Parameters    # obs. used (total)      2961      data-arc span      41422 days (113.41 yr)      first obs. used      1907-03-07      last obs. used      2020-08-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41631      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:26:58   Additional Information  Earth MOID = 1.55764 au   Jupiter MOID = 2.18483 au   T_jup = 3.240  [ 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 10.4   n/a MPO400003   diameter diameter 47.780 km 3.344 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 7.650 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Gross, J. (2003) Minor Planet Bull. 30, 44-46.] geometric albedo albedo 0.035   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1054 Forsytia (1925 WD)          Discovered 1925-Nov-20 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1925 WD = 1962 DD = A907 EA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-26 06:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin