+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15255 (1990 QQ8) Classification: Main-belt Asteroid          SPK-ID: 2015255 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1598719901118152 4.1108e-08   a 3.153038378282062 1.8641e-08 au q 2.648955857847178 1.3289e-07 au i 2.158049774796992 4.0927e-06 deg node 52.07586134225331 0.00012797 deg peri 308.8303343163357 0.00012858 deg M 92.46020201061528 1.3573e-05 deg tp 2458475.275895245808 (2018-Dec-22.77589525) 7.603e-05 TDB period 2044.995290944755 5.60 1.8135e-05 4.965e-08 d yr n .1760395251735205 1.5611e-09 deg/d Q 3.657120898716946 2.1621e-08 au   Orbit Determination Parameters    # obs. used (total)      1176      data-arc span      11048 days (30.25 yr)      first obs. used      1990-08-16      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52696      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 20:26:42   Additional Information  Earth MOID = 1.64668 au   Jupiter MOID = 1.79626 au   T_jup = 3.186  [ hide covariance matrix ] Orbital Elements at Epoch 2456826.5 (2014-Jun-18.0) TDB Reference: JPL 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1550393231348813 4.0385e-08   q 2.666417652316914 1.2915e-07 au tp 2456411.960035376805 (2013-Apr-29.46003538) 7.8908e-05 TDB node 52.46995290285422 0.00012826 deg peri 306.1509598658947 0.00012895 deg i 2.157247304022268 4.0775e-06 deg   Orbit Determination Parameters    # obs. used (total)      1176      data-arc span      11048 days (30.25 yr)      first obs. used      1990-08-16      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52696      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 20:26:42   Additional Information  Jupiter MOID = 1.79626 au   T_jup = 3.186  Orbit Covariance (6×6)   e q tp node peri i e 1.63092395303988E-15 -5.177332577226881E-15 -3.885294455286506E-13 3.887896378351698E-15 -8.397271941442142E-14 9.850289793886783E-17 q -5.177332577226881E-15 1.667887413359758E-14 1.248238426178222E-12 -1.201467996410076E-14 2.77000430494261E-13 -1.103091872467097E-16 tp -3.885294455286506E-13 1.248238426178222E-12 6.226437048634776E-9 8.858309647964099E-12 1.088775453540429E-9 8.422954861969847E-13 node 3.887896378351698E-15 -1.201467996410076E-14 8.858309647964099E-12 1.645181059903766E-8 -1.643829031593828E-8 -3.262548083968277E-11 peri -8.397271941442142E-14 2.77000430494261E-13 1.088775453540429E-9 -1.643829031593828E-8 1.662823598264167E-8 3.271239720154844E-11 i 9.850289793886783E-17 -1.103091872467097E-16 8.422954861969847E-13 -3.262548083968277E-11 3.271239720154844E-11 1.662635905153151E-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 14.1   n/a MPO452386   diameter diameter 9.478 km 0.460 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.059   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15255 (1990 QQ8)          Discovered 1990-Aug-16 by Elst, E. W. at La Silla Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 [ 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 1910-Apr-01 20:06 00:03 Jupiter 1.83630697648567 1.83630632098566 1.83630763198621 2.04275074200591 1.80285949542044 2418763.337410552 2.73643156001607 116.790867175675 10.8932744091439 89.8745304210539 2248762.04972065 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 1920-Sep-30 00:51 00:02 Jupiter 1.78674992773761 1.78674946099511 1.78675039448093 1.9503576748091 1.68990523714075 2422597.535174965 2.43769388976764 135.470298824942 13.932309269384 -81.8822440405158 2694453.12362723 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 1931-Mar-23 02:20 00:02 Jupiter 1.92628635071526 1.92628563084097 1.92628707058934 2.84866799080961 2.68988356584214 2426423.597233250 2.14420900807015 47.2835106985872 15.3218844991513 84.5640831093833 1660971.87825808 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 2005-Feb-18 17:41 < 00:01 Jupiter 1.82552932857526 1.82552894746658 1.82552970968384 2.00045744003846 1.75324136076033 2453420.236806274 0.362195022052465 67.019091828181 13.2324798892559 89.6430858560586 2749543.74023836 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 2015-Aug-19 17:00 < 00:01 Jupiter 1.80299680068536 1.80299638820772 1.80299721316289 2.01414790069998 1.76556504278407 2457254.208616906 0.227078320293408 52.7501643514065 11.0482980874526 -84.1208808847016 2692062.74085194 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 2026-Feb-09 12:28 < 00:01 Jupiter 1.96085516549658 1.96085474882277 1.96085558217027 3.00374071105892 2.85631344757637 2461081.019105062 0.413699769331571 39.8917164666638 12.9892716136422 -87.7241100981984 3222452.64243619 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 2089-Jul-09 22:11 00:02 Jupiter 1.98358702902332 1.9835863879448 1.98358767010162 2.71404336950631 2.55186212437968 2484242.424151069 1.85241054761258 56.6668404209445 14.5680903513337 -88.6156281638665 1955397.09982061 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 2100-Jan-09 10:08 00:02 Jupiter 1.81118257859051 1.81118208283028 1.81118307435063 1.95208786169117 1.6956773398378 2488077.922525131 2.16749114939358 103.013927731326 16.278414555209 86.7823798743851 2234575.36001101 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 2110-Jul-09 19:03 00:03 Jupiter 1.81251197498171 1.81251145864581 1.81251249131854 2.06411550350588 1.82371419147396 2491911.293581494 2.51908630555969 125.020861884132 8.59854779534595 -85.8677002606664 2743383.45500495 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 2120-Dec-31 15:17 00:03 Jupiter 1.98618034925597 1.98617945909242 1.9861812394193 3.1414639064192 3.00264541009994 2495739.137072846 2.82459364478234 48.8473094203465 22.8387750134867 72.5828851334511 1523021.92883194 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 2184-May-30 19:26 00:04 Jupiter 1.96025003174604 1.9602487811217 1.96025128236994 2.60288928254892 2.43122071622425 2518900.310018881 4.30781716341024 73.8051002277532 19.4604361114591 -79.9086500611276 1204816.38682809 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 2194-Nov-30 06:45 00:05 Jupiter 1.80814515190919 1.80814453046706 1.808145773354 1.93794759052805 1.67891163290578 2522735.781096222 4.61600556126212 194.880651308471 16.8800169664561 87.5332475218069 2274440.2018374 T 33 CATAB v2.0f-lin.ifort 2020-Dec-17 20:26:46 2020-Dec-17 20:26 Alternate Designations  1990 QQ8 = 1996 UE4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 21:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin