+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3147 Samantha (1976 YU3) Classification: Main-belt Asteroid          SPK-ID: 2003147 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .194173508342647 2.6452e-08   a 2.621599046214466 9.5047e-09 au q 2.112553961943266 6.8487e-08 au i 3.545760725165734 5.2611e-06 deg node 215.6399124070716 5.3037e-05 deg peri 243.5521260366735 5.5442e-05 deg M 76.22241871752666 1.4522e-05 deg tp 2458672.232371649164 (2019-Jul-07.73237165) 6.2302e-05 TDB period 1550.414539379178 4.24 8.4317e-06 2.308e-08 d yr n .2321959649218411 1.2628e-09 deg/d Q 3.130644130485666 1.135e-08 au   Orbit Determination Parameters    # obs. used (total)      2043      data-arc span      15839 days (43.36 yr)      first obs. used      1976-12-16      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47001      source      ORB      producer      Otto Matic      solution date      2020-May-20 01:49:36   Additional Information  Earth MOID = 1.13222 au   Jupiter MOID = 2.05457 au   T_jup = 3.375  [ 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 13.7   n/a MPO416742   diameter diameter 10.036 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 5.2724 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Aznar Macias, A.; Licandro, J.; Serra-Ricart, M. (2019) Minor Planet Bull. 46-4, in press.] geometric albedo albedo 0.070   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   3147 Samantha (1976 YU3)          Discovered 1976-Dec-16 by Chernykh, L. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1976 YU3 = 1979 OU12 = 1980 TG13  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-22 09:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin