+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   12818 Tomhanks (1996 GU8) Classification: Main-belt Asteroid          SPK-ID: 2012818 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ 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 .06004524548933581 2.8316e-08   a 2.739289506893262 9.5777e-09 au q 2.574808195985495 7.6519e-08 au i 3.85209757050038 2.9554e-06 deg node 77.4664255967367 5.5867e-05 deg peri 228.0379866630688 6.48e-05 deg M 12.77374661160911 3.1612e-05 deg tp 2458941.741442713690 (2020-Apr-02.24144271) 0.00014545 TDB period 1655.980916659724 4.53 8.685e-06 2.378e-08 d yr n .2173938095410878 1.1402e-09 deg/d Q 2.90377081780103 1.0153e-08 au   Orbit Determination Parameters    # obs. used (total)      2397      data-arc span      14143 days (38.72 yr)      first obs. used      1982-02-20      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47259      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:50:40   Additional Information  Earth MOID = 1.56155 au   Jupiter MOID = 2.22819 au   T_jup = 3.345  [ 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 13.8   n/a MPO395126   diameter diameter 5.447 km 0.310 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.216   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   12818 Tomhanks           Discovered 1996 Apr. 13 by Spacewatch at Kitt Peak. Tom Hanks (b. 1956) has starred in such films as Splash, Sleepless in Seattle, Apollo 13 and Saving Private Ryan, winning Oscars for his roles in Philadelphia and Forrest Gump. He was executive producer for the miniseries From the Earth to the Moon, which dramatized the Apollo expeditions to the moon. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030318/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1996 GU8 = 1982 DC4 = 1992 LY2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 00:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin