+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   12173 Lansbergen (3135 T-3) Classification: Main-belt Asteroid          SPK-ID: 2012173 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06081191456869826 3.0114e-08   a 2.738510283285615 1.1218e-08 au q 2.571976229892948 8.3545e-08 au i 3.431452431883943 4.6883e-06 deg node 185.405166084095 5.7511e-05 deg peri 262.7847231105433 7.0239e-05 deg M 126.5680806970255 3.9491e-05 deg tp 2458618.541943778294 (2019-May-15.04194378) 0.00018143 TDB period 1655.274371595475 4.53 1.0171e-05 2.785e-08 d yr n .2174866029327849 1.3364e-09 deg/d Q 2.905044336678282 1.1901e-08 au   Orbit Determination Parameters    # obs. used (total)      1991      data-arc span      15589 days (42.68 yr)      first obs. used      1977-10-07      last obs. used      2020-06-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49548      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:54:44   Additional Information  Earth MOID = 1.59084 au   Jupiter MOID = 2.21335 au   T_jup = 3.346  [ hide covariance matrix ] Orbital Elements at Epoch 2456753.5 (2014-Apr-06.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0594999388969998 3.024e-08   q 2.575810108192154 8.3787e-08 au tp 2456970.689845321230 (2014-Nov-09.18984532) 0.00018494 TDB node 185.4790479406994 5.7632e-05 deg peri 264.6711883208451 7.0759e-05 deg i 3.426541629174328 4.6847e-06 deg   Orbit Determination Parameters    # obs. used (total)      1991      data-arc span      15589 days (42.68 yr)      first obs. used      1977-10-07      last obs. used      2020-06-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49548      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:54:44   Additional Information  Jupiter MOID = 2.21335 au   T_jup = 3.346  Orbit Covariance (6×6)   e q tp node peri i e 9.144355168243051E-16 -2.513589161767611E-15 -3.598634962523319E-14 3.991724845471545E-15 -1.218564800067627E-14 -1.322054563518446E-16 q -2.513589161767611E-15 7.020325366457093E-15 -2.603269730971954E-15 -1.038693641334988E-14 7.38608142958042E-15 5.999391951624931E-16 tp -3.598634962523319E-14 -2.603269730971954E-15 3.420140039425256E-8 -3.709903281605014E-11 7.602436955755861E-9 5.369204333815715E-13 node 3.991724845471545E-15 -1.038693641334988E-14 -3.709903281605014E-11 3.321422516819051E-9 -3.32335203437404E-9 -1.236919376687759E-11 peri -1.218564800067627E-14 7.38608142958042E-15 7.602436955755861E-9 -3.32335203437404E-9 5.00684328843415E-9 1.247017370906636E-11 i -1.322054563518446E-16 5.999391951624931E-16 5.369204333815715E-13 -1.236919376687759E-11 1.247017370906636E-11 2.194648572792333E-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 14.02   n/a E2021B10   diameter diameter 4.198 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.332   0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   12173 Lansbergen           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Philippus Lansbergen (1561-1632), Calvanist minister and active astronomical researcher in Middelburg, The Netherlands, in 1629 wrote the first popular book on astronomy in the Dutch language. The book promoted the Copernican system and became a best seller. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20090209/MPCPages.arc Last Updated: 2009-02-11 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2100-Sep-13 12:41 00:04 Psych 0.0389935815127242 0.0389805195118629 0.0390066437615314 2.00740408099544 2.00740392642542 2488325.028601440 4.08789729872171 666.024340637059 50.7012150214226 13.2208302428455 27560.2445271829 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:49 2020-Nov-13 02:54 Alternate Designations  3135 T-3 = 1998 KM1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-07 00:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin