+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266768 (2009 SK138) Classification: Main-belt Asteroid          SPK-ID: 2266768 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1391321471914929 4.3117e-08   a 3.125114137478784 2.7221e-08 au q 2.690310297312871 1.453e-07 au i 4.24604252538044 6.995e-06 deg node 23.24307975539893 6.4005e-05 deg peri 53.03866117967461 6.9621e-05 deg M 329.0503100529916 2.5709e-05 deg tp 2459373.980655340736 (2021-Jun-08.48065534) 0.00014427 TDB period 2017.888903882276 5.52 2.6365e-05 7.218e-08 d yr n .1784042715668764 2.3309e-09 deg/d Q 3.559917977644697 3.1008e-08 au   Orbit Determination Parameters    # obs. used (total)      292      data-arc span      9421 days (25.79 yr)      first obs. used      1995-03-27      last obs. used      2021-01-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .6008      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 03:17:10   Additional Information  Earth MOID = 1.70771 au   Jupiter MOID = 1.72024 au   T_jup = 3.196  [ 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 15.96   n/a MPCxxxxx   diameter diameter 2.969 km 0.317 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.105   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   266768 (2009 SK138)          Discovered 2009-Sep-18 by Spacewatch at Kitt Peak Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 [ 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 1914-Dec-07 10:12 00:04 Jupiter 1.89599386683326 1.89599237333965 1.89599536032849 3.27005700540427 3.13046103103367 2420473.924745229 4.13954132105922 139.223944326543 28.9848803689435 74.2796338149702 1434484.59040148 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 1925-Feb-16 07:27 00:04 Jupiter 1.75412570142043 1.75412519214271 1.75412621069815 1.95249148005225 1.68714968154894 2424197.810430305 3.79402435808314 105.423354770047 32.5967722354806 -86.8301106005038 2225852.23387581 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 1935-May-06 23:13 00:03 Jupiter 1.90915409820891 1.90915287620515 1.90915532021322 2.42639917783069 2.23608707868565 2427929.467671820 3.18400962051733 103.346829356874 9.12431169981908 78.6415011067543 1658875.62690303 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 1997-Aug-03 16:32 < 00:01 Jupiter 1.82478609418795 1.82478535492635 1.82478683344935 2.76897257800345 2.59593075388126 2450664.188889517 0.898289528097812 61.2509426866176 18.6135269514143 86.7541635294491 1635551.43194125 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 2007-Oct-12 07:50 < 00:01 Jupiter 1.75957727951586 1.75957681177356 1.75957774725825 1.89557647355081 1.62186724157747 2454385.826254619 0.525620026963066 81.9863828658939 18.7865333340476 79.5946375888946 2508573.28637764 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 2018-Jan-04 14:48 < 00:01 Jupiter 1.99165580679938 1.99165512516901 1.99165648842974 2.75824375268664 2.59948791553111 2458123.116371588 0.390318317678002 62.242369686043 15.6138721843645 77.2887217063389 2171217.6778067 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 2080-Mar-28 10:01 00:03 Jupiter 1.76131104710242 1.76131029122168 1.76131180298266 2.33644961315419 2.1206573693586 2480851.917088290 2.59152173544544 74.8276011104636 19.6946447840244 -86.5555489921646 1198976.62913115 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 2090-Jun-06 13:07 00:03 Jupiter 1.79579374808258 1.79579297652003 1.79579451964463 1.98440700929359 1.73047122214288 2484574.046751869 3.03857621986935 77.4148565820291 13.7106625208417 81.6342440553585 1819625.75225316 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 2152-Sep-06 04:12 00:05 Jupiter 1.92374243419705 1.9237404936034 1.92374437479604 3.59618001988197 3.47158639081469 2507310.675084494 5.30682768677187 207.607639789881 32.2446543377773 72.0268129418869 1643572.91065089 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 2162-Nov-21 12:52 00:06 Jupiter 1.73317745223377 1.73317682008403 1.73317808438332 2.05323478829884 1.7995420329347 2511039.036061488 6.01200425865863 117.078046297218 55.2684139446552 -58.8338374993454 1068250.39743281 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 2173-Feb-01 01:28 00:06 Jupiter 1.86187318879209 1.86187122736673 1.86187515021564 2.20778238007386 1.99109077046993 2514763.561191869 6.33396864901744 90.6166370915242 8.94059282997142 76.9273060035736 909179.872646009 T 17 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:11 2021-Apr-14 03:17 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jun-15 17:48 UT (server date/time)   Site Manager:   Ryan S. 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