+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11020 Orwell (1984 OG) Classification: Main-belt Asteroid          SPK-ID: 2011020 [ 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 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1497448903077869 3.08e-08   a 3.098798854145434 1.4819e-08 au q 2.63476955964553 9.5768e-08 au i 3.014050058717967 3.9852e-06 deg node 153.8403341451986 6.2106e-05 deg peri 137.1864866290962 6.3467e-05 deg M 264.4903747073345 1.4673e-05 deg tp 2459729.107289040341 (2022-May-29.60728904) 8.2398e-05 TDB period 1992.454932907546 5.46 1.4292e-05 3.913e-08 d yr n .1806816275009341 1.2961e-09 deg/d Q 3.562828148645338 1.7038e-08 au   Orbit Determination Parameters    # obs. used (total)      2526      data-arc span      15092 days (41.32 yr)      first obs. used      1979-09-24      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47352      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:58:11   Additional Information  Earth MOID = 1.61764 au   Jupiter MOID = 1.6259 au   T_jup = 3.203  [ 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 12.65   n/a E2021B10   diameter diameter 14.466 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.089   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11020 Orwell           Discovered 1984 July 31 by A. Mrkos at Klet. British writer George Orwell (Eric Blair, 1903-1950) was renowned for his novels Animal Farm and 1984, the latter a brilliant examination of the dangers of totalitarian rule. The name was suggested by J. Ticha and endorsed by B. G. Marsden, who made the identification involving this aptly designated object. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000523/MPCPages.arc Last Updated: 2013-03-29 [ show close-approach data ] Alternate Designations  1984 OG = 1979 SA9 = 1999 GL5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-24 21:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin