+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   127005 Pratchett (2002 GY1) Classification: Main-belt Asteroid          SPK-ID: 2127005 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2041729068315991 4.0277e-08   a 2.35851542637704 1.3546e-08 au q 1.876970475966471 9.7268e-08 au i 7.279891622422405 4.6721e-06 deg node 128.274549404409 3.6664e-05 deg peri 143.6785920646641 4.0034e-05 deg M 290.8549879804455 2.1195e-05 deg tp 2459254.605967539925 (2021-Feb-09.10596754) 7.963e-05 TDB period 1322.989838927248 3.62 1.1398e-05 3.121e-08 d yr n .272110933438391 2.3443e-09 deg/d Q 2.840060376787609 1.6312e-08 au   Orbit Determination Parameters    # obs. used (total)      466      data-arc span      7616 days (20.85 yr)      first obs. used      1999-07-14      last obs. used      2020-05-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55915      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 17:08:18   Additional Information  Earth MOID = .866387 au   Jupiter MOID = 2.29488 au   T_jup = 3.514  [ 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 16.3   n/a MPO412832   diameter diameter 1.224 km 0.275 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.390   0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   127005 Pratchett           Discovered 2002 Apr. 1 by J. Dellinger and W. G. Dillon at Needville. Terence David John ("Terry") Pratchett (b. 1948) is a popular English author known for his richly detailed and allegorical "Discworld" series of satirical fantasy novels. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20091202/MPCPages.arc Last Updated: 2010-04-12 [ show close-approach data ] Alternate Designations  2002 GY1 = 1999 NV29  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 23:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin