+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19413 Grantlewis (1998 FB30) Classification: Main-belt Asteroid          SPK-ID: 2019413 [ 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 .1261900317834349 2.7268e-08   a 2.386324614199628 8.429e-09 au q 2.085194235288184 6.4672e-08 au i 6.138832578035584 3.4033e-06 deg node 206.3133619837953 3.3495e-05 deg peri 199.2350637718889 3.6911e-05 deg M 124.2207777723318 1.5982e-05 deg tp 2458535.894387804602 (2019-Feb-21.39438780) 5.9329e-05 TDB period 1346.457681152897 3.69 7.1339e-06 1.953e-08 d yr n .2673682248162096 1.4166e-09 deg/d Q 2.687454993111071 9.4926e-09 au   Orbit Determination Parameters    # obs. used (total)      1620      data-arc span      12666 days (34.68 yr)      first obs. used      1985-09-21      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49846      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:08:56   Additional Information  Earth MOID = 1.09519 au   Jupiter MOID = 2.68663 au   T_jup = 3.516  [ hide covariance matrix ] Orbital Elements at Epoch 2457209.5 (2015-Jul-06.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1248520005159946 2.7201e-08   q 2.088634040492591 6.444e-08 au tp 2457187.504944919640 (2015-Jun-14.00494492) 5.9533e-05 TDB node 206.3487104375649 3.3531e-05 deg peri 198.9077161189903 3.7034e-05 deg i 6.13362989593321 3.4031e-06 deg   Orbit Determination Parameters    # obs. used (total)      1620      data-arc span      12666 days (34.68 yr)      first obs. used      1985-09-21      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49846      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:08:56   Additional Information  Jupiter MOID = 2.68663 au   T_jup = 3.516  Orbit Covariance (6×6)   e q tp node peri i e 7.399113104277741E-16 -1.741493797180389E-15 -3.381055477088235E-13 1.7024627044434E-16 -9.986457303567245E-14 2.744325593278999E-16 q -1.741493797180389E-15 4.152486760825548E-15 8.277135583470823E-13 -6.572179037063304E-16 2.438408084766833E-13 -6.54470129459709E-16 tp -3.381055477088235E-13 8.277135583470823E-13 3.544170158806844E-9 2.304757123309759E-14 9.498078591178529E-10 -1.043398252190507E-12 node 1.7024627044434E-16 -6.572179037063304E-16 2.304757123309759E-14 1.124357192918755E-9 -1.117680618346615E-9 -3.573909271557628E-11 peri -9.986457303567245E-14 2.438408084766833E-13 9.498078591178529E-10 -1.117680618346615E-9 1.371501949839343E-9 3.526508073461143E-11 i 2.744325593278999E-16 -6.54470129459709E-16 -1.043398252190507E-12 -3.573909271557628E-11 3.526508073461143E-11 1.158105261403701E-11 [ 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 14.6   n/a MPO452445   19413 Grantlewis           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Grant Allen Lewis (b. 1985) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for his engineering project. He attends the Delavan High School, Delavan, Illinois, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040830/MPCPages.arc Last Updated: 2004-09-06 [ show close-approach data ] Alternate Designations  1998 FB30 = 1985 SF6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 15:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin