+ 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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1341374567754246 1.082e-08   a 2.922843763796956 9.918e-09 au q 2.530780934769322 3.0369e-08 au i 10.8703374519867 8.1702e-07 deg node 85.77358816846241 1.8025e-06 deg peri 295.6469521153025 9.4544e-06 deg M 78.71520462551887 7.7098e-06 deg tp 2458997.417249258603 (2020-May-27.91724926) 3.8975e-05 TDB period 1825.184739725952 5.00 9.2901e-06 2.543e-08 d yr n .1972403078792195 1.0039e-09 deg/d Q 3.31490659282459 1.1248e-08 au   Orbit Determination Parameters    # obs. used (total)      3524      data-arc span      41712 days (114.20 yr)      first obs. used      1907-03-07      last obs. used      2021-05-19      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .39155      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 11:54:26   Additional Information  Earth MOID = 1.55713 au   Jupiter MOID = 2.18423 au   T_jup = 3.239  [ 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 10.48   n/a E2021B10   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. 2020-October); 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 Alternate Designations  1925 WD = 1962 DD = A907 EA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-26 15:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin