+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146867 (2002 AC176) Classification: Main-belt Asteroid          SPK-ID: 2146867 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06713098975927519 5.6718e-08   a 3.048214140201768 2.6743e-08 au q 2.843584507971805 1.7306e-07 au i 2.535763407192726 5.8819e-06 deg node 316.4995365340341 0.00011993 deg peri 234.6010994742275 0.00012615 deg M 106.4627615577108 3.8695e-05 deg tp 2458425.640300673405 (2018-Nov-03.14030067) 0.00020933 TDB period 1943.867402362956 5.32 2.5581e-05 7.004e-08 d yr n .1851978172803277 2.4372e-09 deg/d Q 3.252843772431731 2.8538e-08 au   Orbit Determination Parameters    # obs. used (total)      374      data-arc span      9005 days (24.65 yr)      first obs. used      1994-09-12      last obs. used      2019-05-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58573      source      ORB      producer      Otto Matic      solution date      2019-May-30 07:22:30   Additional Information  Earth MOID = 1.84444 au   Jupiter MOID = 1.71821 au   T_jup = 3.233  [ 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 15.4   n/a MPO260126   diameter diameter 6.250 km 1.652 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.029   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   146867 (2002 AC176)          Discovered 2002-Jan-14 by LINEAR at Socorro Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ 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 1904-Oct-07 12:15 00:04 Jupiter 1.75229863169041 1.75229763212104 1.75229963126167 2.42725898517793 2.21919586479822 2416761.010498587 4.32572872738163 150.798028200014 15.0911442378083 83.9342215692335 1884503.52130056 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 1914-Mar-01 23:14 00:04 Jupiter 1.97991790463154 1.97991632631225 1.97991948295037 3.39261867089142 3.26408450741747 2420193.468107364 3.74206142868097 68.0705056885417 50.9712301909339 -27.522503718503 1239458.20711207 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 1953-Jan-01 08:46 00:02 Jupiter 1.85104674792973 1.8510457372822 1.85104775857725 2.82236581887135 2.65529030755581 2434378.865244574 2.39255642958214 79.7223943103143 25.3783101172475 76.75270300716 1785631.02815217 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 1962-May-17 00:38 00:02 Jupiter 1.82853609893597 1.82853539028641 1.82853680758584 2.8492135078272 2.68171005828367 2437801.526633380 2.03017676258672 92.3277583030798 19.0570450185706 -82.5635791158802 2266671.49849408 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 2001-Mar-19 05:00 < 00:01 Jupiter 1.99594036449142 1.9959398196981 1.99594090928474 3.45521297982173 3.33012783865905 2451987.708552499 0.525915941153018 52.6897589389317 21.2140672440563 -87.3348396478281 2822825.11428247 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 2010-Aug-07 19:42 < 00:01 Jupiter 1.73729382872757 1.7372932811574 1.73729437629755 2.45234689569387 2.24474935010473 2455416.320533749 0.316083057271398 61.0441807358197 11.7768955899924 -86.2675599815232 2066967.43058177 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 2058-Nov-01 01:11 00:02 Jupiter 1.73361632322816 1.733615784177 1.73361686227924 2.3535094232118 2.13584467362023 2473033.549460642 1.8198005306072 90.0846219809128 8.12105173943808 -88.0721259696193 2057085.83209895 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 2107-Jan-27 11:52 00:04 Jupiter 1.8114014316702 1.81140035637475 1.81140250696647 2.647902301022 2.46498970030696 2490651.994685905 3.71028640077043 113.365959343008 19.7863315275993 80.6216660741053 1840746.07580469 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 2116-Jun-11 21:05 00:04 Jupiter 1.87966374515963 1.87966205191362 1.87966543840681 3.04327751143298 2.89141644049504 2494075.378467111 3.95960754658441 127.579083494814 31.5677598131792 -65.1933008167258 1703656.35576032 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 2155-Apr-19 05:19 00:05 Jupiter 1.94988116760076 1.94987899661652 1.9498833385861 3.24491113453217 3.10815930819472 2508265.721576751 5.38112580486451 143.498792891357 35.4792180472285 58.3237020353903 1513320.83250067 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 2164-Sep-01 09:53 00:06 Jupiter 1.76630740428363 1.76630597468892 1.76630883389661 2.55983544994296 2.36509388401539 2511688.911871456 5.93317495498644 326.946340840278 12.266135799446 -85.4293335535414 2156880.83377118 T 12 CATAB v2.0e-lin.ifort 2019-May-30 07:22:33 2019-May-30 07:22 Alternate Designations  2002 AC176 = 1994 RW9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-22 18:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin