+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   408 Fama (A917 RB) Classification: Main-belt Asteroid          SPK-ID: 2000408 [ 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 47 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .145154112951667 2.6348e-08   a 3.166653066498475 1.2392e-08 au q 2.707000349605213 8.3101e-08 au i 9.086097558525866 4.9193e-07 deg node 297.1321010224802 1.5804e-06 deg peri 108.6001410674304 6.2477e-06 deg M 68.89656114879593 5.9127e-06 deg tp 2458806.592545632423 (2019-Nov-19.09254563) 3.2709e-05 TDB period 2058.254885408109 5.64 1.2082e-05 3.308e-08 d yr n .1749054514832936 1.0267e-09 deg/d Q 3.626305783391737 1.4191e-08 au   Orbit Determination Parameters    # obs. used (total)      3329      data-arc span      41823 days (114.51 yr)      first obs. used      1906-09-12      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .37822      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 10:50:38   Additional Information  Earth MOID = 1.73343 au   Jupiter MOID = 1.81839 au   T_jup = 3.168  [ 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 9.34   n/a E2021B10   diameter diameter 35.620 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 202.1 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Stephens, R.D. (2008) Minor Planet Bull. 35, 21-22.] geometric albedo albedo 0.221   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   408 Fama (A917 RB)          Discovered 1895-Oct-13 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A917 RB = 1940 TG = A895 TC = A906 RC = A908 AB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-15 11:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin