+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   48791 (1997 SD33) Classification: Main-belt Asteroid          SPK-ID: 2048791 [ 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 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1505065693028176 4.6285e-08   a 3.186631340515726 1.9832e-08 au q 2.707022389821866 1.5265e-07 au i .2466209472644137 4.5273e-06 deg node 322.5156535816078 0.0011918 deg peri 178.3584393944273 0.0011919 deg M 254.5861035823029 1.8277e-05 deg tp 2459608.903252682008 (2022-Jan-29.40325268) 0.00010797 TDB period 2077.763733328354 5.69 1.9397e-05 5.311e-08 d yr n .1732632032340456 1.6175e-09 deg/d Q 3.666240291209587 2.2817e-08 au   Orbit Determination Parameters    # obs. used (total)      858      data-arc span      10632 days (29.11 yr)      first obs. used      1991-10-08      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57182      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 21:26:57   Additional Information  Earth MOID = 1.72003 au   Jupiter MOID = 1.35844 au   T_jup = 3.180  [ 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 14.7   n/a MPO359067   diameter diameter 5.676 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.055   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   48791 (1997 SD33)          Discovered 1997-Sep-29 by Spacewatch at Kitt Peak Reference: 20021120/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 SD33 = 1999 BE27 = 2000 JY25  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 17:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin