+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   106 Dione (A868 TA) Classification: Main-belt Asteroid          SPK-ID: 2000106 [ 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 121 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .159361263164182 3.8076e-08   a 3.179849982492596 1.1293e-08 au q 2.673105072609974 1.2033e-07 au i 4.57608132754323 4.2058e-06 deg node 62.00657363319667 5.466e-05 deg peri 331.1701032774097 5.624e-05 deg M 327.8678743632361 1.4768e-05 deg tp 2459385.361013520199 (2021-Jun-19.86101352) 8.5341e-05 TDB period 2071.134839306384 5.67 1.1033e-05 3.021e-08 d yr n .1738177511033337 9.2594e-10 deg/d Q 3.686594892375219 1.3092e-08 au   Orbit Determination Parameters    # obs. used (total)      3099      data-arc span      54732 days (149.85 yr)      first obs. used      1871-03-16      last obs. used      2021-01-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46369      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:43:28   Additional Information  Earth MOID = 1.67956 au   Jupiter MOID = 1.74847 au   T_jup = 3.175  [ 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 7.62   n/a E2021B10 IRAS observations used: 17 diameter diameter 207.869 km 2.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 16.210 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pray, D. (2005) Minor Planet Bull. 32, 48-51.] [Pilcher, F. (2017) Minor Planet Bull. 44, 249-251.] geometric albedo albedo 0.044   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.743   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=4.26, mean=11.70, max.=19.19) deg. U-B UB 0.464   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=4.26, mean=11.70, max.=19.19) deg. Tholen spectral type spec_T G   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B Cgh   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 106 Dione (A868 TA)          Discovered 1868-Oct-10 by Watson, J. C. at Ann Arbor Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ 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 1900-Dec-08 16:48 00:02 Jupiter 1.85792012459581 1.8579195387133 1.85792071047842 2.5542718692267 2.36907330002794 2415362.199792570 1.65854212350133 65.4581083584446 7.97415951670823 80.35535891205 2364578.77151 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 1911-Sep-19 01:47 00:01 Jupiter 1.7480202049409 1.74801984423743 1.74802056564436 2.01877191573508 1.76247494633384 2419298.574188362 1.40161659314384 82.8702180822207 17.1489413148639 81.7283249665473 2603467.0590129 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 1922-Jul-09 08:08 00:01 Jupiter 1.78371197639806 1.78371151819694 1.7837124345999 1.98306539337676 1.72708373008785 2423244.839002932 1.19721229427492 118.100848738895 20.3903109791333 87.315002550395 2518185.02372511 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 1933-Apr-21 16:03 00:01 Jupiter 1.93912396289813 1.93912342190794 1.93912450388843 2.4749322473956 2.29165356172507 2427184.168600068 1.0330432146228 72.3581426529872 11.2009046068889 87.6920210547149 2945556.31277394 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 2019-Jul-30 02:54 < 00:01 Jupiter 1.82439851332299 1.82439813244323 1.82439889420265 2.40588481179763 2.20447994810775 2458694.620927003 0.257065888336125 53.5796361760739 5.84880531048808 81.1321256458018 3118361.22745948 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 2030-May-10 10:58 < 00:01 Jupiter 1.73515290306691 1.73515254848069 1.73515325765322 1.97633871005438 1.71160915709515 2462631.957193861 0.393530940519948 85.3859929030942 19.5162667300973 81.2818452911596 2602679.40954006 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 2041-Feb-27 17:16 < 00:01 Jupiter 1.79712300027472 1.79712256339697 1.79712343715267 2.0417755970378 1.79616391310482 2466578.219202218 0.584996264091792 94.3134527392528 17.3338116026333 86.0926159896913 2576512.18396623 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 2051-Dec-10 22:57 < 00:01 Jupiter 1.97274649264315 1.97274596400017 1.97274702128613 2.62837209741036 2.45959666293651 2470516.455972238 0.788409188067811 61.3489136808381 13.6491096155052 85.8922712066546 3032585.06326415 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 2127-Jun-23 05:30 00:02 Jupiter 1.97015321169397 1.97015247861081 1.97015394477723 3.27039976802792 3.13618560991601 2498103.728822852 1.84384063259561 62.4597899975585 15.8977353744101 72.2659352526631 2261156.9577947 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 2138-Mar-19 10:39 00:02 Jupiter 1.79176962995486 1.79176904937055 1.79177021053947 2.26492282595045 2.04558457049026 2502025.943736870 1.98102507803533 78.9638001142639 8.12582440280464 85.0430276922572 2239795.71611178 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 2148-Dec-29 14:12 00:02 Jupiter 1.72633493239784 1.72633456677467 1.7263352980211 1.94535394110812 1.67424796982717 2505964.091673807 2.09790703031683 87.3933298274359 22.967093265492 81.1913568252426 2531921.66130758 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 2159-Oct-19 04:31 00:02 Jupiter 1.81602561882983 1.81602485065195 1.81602638701133 2.11730221503043 1.88418089606052 2509909.688015344 2.31922606662634 169.262962240628 14.264586177767 85.6600774517181 2550619.49180789 T 121 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:36 2021-Feb-24 00:43 Alternate Designations  A868 TA = A902 TA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 22:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin