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3671 Dionysus (1984 KD)
Classification: Apollo [NEO, PHA]          SPK-ID: 2003671
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 99 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5416798698566093 2.5902e-08  
a 2.19859132883212 1.8874e-09 au
q 1.007658663962467 5.6759e-08 au
i 13.53410152389855 5.6233e-06 deg
node 82.08580521435017 1.6007e-05 deg
peri 204.2630162165088 1.6185e-05 deg
M 7.99451591879271 6.3837e-06 deg
tp 2458974.057356862725
(2020-May-04.55735686)
2.1085e-05 TDB
period 1190.735202245575
3.26
1.5333e-06
4.198e-09
d
yr
n .3023342211778788 3.8932e-10 deg/d
Q 3.389523993701772 2.9098e-09 au
  Orbit Determination Parameters
   # obs. used (total)      566  
   data-arc span      13233 days (36.23 yr)  
   first obs. used      1984-05-27  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52214  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-20 07:00:59  

Additional Information
 Earth MOID = .0206816 au 
 Jupiter MOID = 1.83881 au 
 T_jup = 3.429 
[ 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 16.4   n/a MPO435733  
diameter diameter 1.5 km n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
rotation period rot_per 2.7053 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Mottola, S.; Hahn, G.; Pravec, P.; Sarounova, L. (1997) IAUC 6680; http://www.eso.org/outreach/press-rel/pr-1997/pr-08-97.html.]
[Pravec, P.; et al. (2006) Icarus 181, 63-93.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46-4, in press.]
geometric albedo albedo 0.16   n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
SMASSII spectral type spec_B Cb   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)

3671 Dionysus (1984 KD)          Discovered 1984-May-27 by Shoemaker, C. and Shoemaker, E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1903-May-15 17:13 < 00:01 Earth 0.354542950745974 0.354540837242218 0.354545064249791 19.6372393085832 19.6368566007943 2416250.217216491 0.218988739860456 105.707701068004 9.68519011507975 -4.46374751680968 583478.214137578 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
1930-Nov-15 08:43 < 00:01 Jupiter 1.83960284438069 1.83960256294529 1.83960312581608 3.3245418725513 3.1830336548589 2426295.863142953 0.190711425574075 41.7943190347199 15.4487527887058 86.2495191908929 3353705.00599096 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
1945-Aug-16 07:08 < 00:01 Earth 0.320247182164756 0.320246577848085 0.320247786482538 15.3620675374331 15.3615259294895 2431683.797436562 0.131922909046 44.2150839522903 11.7357549333423 49.3785086082166 2705595.59913213 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
1958-Jul-19 05:29 < 00:01 Earth 0.1641058273236 0.164105262584083 0.164106392065821 11.1454545800224 11.1439977162212 2436403.728245235 0.290927053819313 45.3043806649025 9.96620449759362 53.4225075106659 1601190.42674918 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
1966-Jul-21 12:23 < 00:01 Jupiter 1.86486170242612 1.86486144276336 1.86486196208888 3.30599002491992 3.16562277370772 2439328.016309536 0.208295049337754 43.8722135641867 14.2897313338277 87.7151279195184 3285061.03885149 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
1971-Jun-23 22:55 < 00:01 Earth 0.051812440693148 0.0518114153825704 0.0518134660049243 10.7263367161204 10.7215413257133 2441126.454934358 0.331521978287489 52.6312519632926 4.41726830738853 -13.7680407007213 461140.692924298 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
1984-Jun-19 01:10 < 00:01 Earth 0.0304656364017482 0.0304653659425521 0.0304659068610014 10.9438317416407 10.9358372408366 2445870.548622048 0.0511511201180409 13.7202736880621 7.56769000368859 -12.7055845432149 356583.970515157 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
1997-Jul-06 21:31 < 00:01 Earth 0.114381274322774 0.114380903975011 0.114381644670798 10.6202720120651 10.6180783655807 2450636.396623517 0.10703175913745 20.8769942768194 8.84886132200063 30.9935480077595 1111922.16518378 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2002-May-17 12:17 < 00:01 Jupiter 1.94799090725959 1.94799043601083 1.94799137850845 3.34053933717156 3.2077353430183 2452412.011963678 0.124827556328518 51.6611285414299 22.5136190705383 79.0457096559335 3174370.37414229 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2010-Aug-13 02:04 < 00:01 Earth 0.280413339478346 0.280412754752335 0.280413924204931 14.0615044100275 14.0608286502541 2455421.585857720 0.140090398442676 37.0465052833516 13.9893562480104 41.7785148315378 1853892.00946139 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2023-Sep-03 02:42 < 00:01 Earth 0.483044189987951 0.483043335215384 0.483045044760821 20.7159445428908 20.7156782720894 2460190.612473587 0.117523324552478 47.1906352959511 15.0169003851905 26.9184170818941 2258581.96543802 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2059-May-19 09:43 < 00:01 Earth 0.316383035819324 0.316381560434354 0.316384511204402 18.6634172096376 18.6629659637537 2473232.904820852 0.149827882968571 74.1554869531716 9.96043635258665 -7.27136577979593 780530.85098239 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2060-Oct-28 09:13 < 00:01 Jupiter 1.95043228317622 1.9504318163925 1.95043274995994 3.2712566282467 3.13569313374572 2473760.883919010 0.183754719048526 36.55704836363 21.1601165295492 66.0342125001596 3367396.84194105 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2072-May-29 23:04 < 00:01 Earth 0.147033455104859 0.147032032982563 0.147034877227223 14.5041514440247 14.5029019833988 2477992.461084804 0.191144667760619 71.0839258110937 9.83232582824702 -4.01834635834787 316723.115230191 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2085-Jun-18 08:19 < 00:01 Earth 0.0279971706391623 0.0279966242197715 0.0279977170645369 11.0422555591328 11.0336335196979 2482759.846552330 0.194561467836663 34.718198818527 8.59391664413552 -39.757779124261 332357.648873807 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2096-Oct-04 00:50 < 00:01 Jupiter 1.83002446741543 1.83002410666157 1.83002482816938 3.2503687085065 3.10470633883349 2486885.534663063 0.231429548196324 39.5731608063456 18.4002872075398 77.6520066992639 3469251.61477383 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2098-Aug-15 18:19 < 00:01 Earth 0.276185275672931 0.276184189934495 0.276186361415858 13.9931136195969 13.9924241610269 2487566.263351879 0.305555538178198 78.8921701252624 13.6270911865546 47.6033868575159 1860860.47760992 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2132-Oct-02 20:05 < 00:01 Jupiter 1.88161182711992 1.88161137646234 1.8816122777776 3.27256625635037 3.1319920194064 2500032.336901819 0.665426153205397 50.1969147970763 19.1879854986197 78.4360243138537 3120975.34988694 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2134-May-23 13:29 < 00:01 Earth 0.263632774664421 0.263627047580251 0.263638501749401 17.4842776617877 17.4836996024236 2500630.062017292 0.533133560780507 286.514236525274 8.02239697249165 -4.63239368920868 375943.152521577 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2147-Jun-23 05:38 00:01 Earth 0.0469779849183762 0.0469732817214439 0.0469826881942452 10.6844053146758 10.6790955466769 2505408.734385651 1.37070859172404 253.449760006043 5.98922967368228 -22.2759331268192 467030.408397618 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2160-Aug-30 12:33 < 00:01 Earth 0.375722902709689 0.375722244572171 0.375723560847719 17.5974189009138 17.5970159049575 2510226.022810820 0.0874250252056521 40.6347532039776 14.4143871775747 39.1022604506972 2392358.13176473 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2183-May-25 20:53 00:01 Earth 0.236072845275729 0.236060041722274 0.236085648829694 16.7655395488354 16.7648663280634 2518529.370476800 1.28541391716558 638.698996047631 8.30415354948796 -1.6244554524534 118194.590516714 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2191-May-25 13:53 00:02 Jupiter 1.92233622357828 1.92233457943375 1.92233786772315 3.21459699902655 3.07447410574912 2521451.078148274 1.79966939351167 91.9915993901915 28.8241545346449 30.3430520947946 2891115.12571778 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
2196-Jul-22 20:24 00:05 Earth 0.166516377281861 0.166504728285486 0.166528027435613 10.8168142069409 10.815334806538 2523336.349704476 5.20095572667933 903.844180377892 11.2211612304298 50.0134919262089 1458732.07652179 T 99 CATAB v2.0f-lin.ifort 2020-Aug-20 07:01:03 2020-Aug-20 07:01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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