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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 127 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5416798954748616 2.095e-08  
a 2.198591327707204 1.819e-09 au
q 1.007658607122829 4.5791e-08 au
i 13.53409416976959 4.7285e-06 deg
node 82.0857875043333 1.4189e-05 deg
peri 204.2630377663351 1.46e-05 deg
M 7.994518713463725 6.1727e-06 deg
tp 2458974.057347639371
(2020-May-04.55734764)
2.0388e-05 TDB
period 1190.735201331711
3.26
1.4777e-06
4.046e-09
d
yr
n .3023342214099141 3.7519e-10 deg/d
Q 3.38952404829158 2.8042e-09 au
  Orbit Determination Parameters
   # obs. used (total)      732  
   data-arc span      13377 days (36.62 yr)  
   first obs. used      1984-05-27  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51296  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-11 05:22:01  

Additional Information
 Earth MOID = .0206816 au 
 Jupiter MOID = 1.83881 au 
 T_jup = 3.429 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457535.5 (2016-May-27.0) TDB
Reference: JPL 127 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5412608629881659 2.0958e-08  
q 1.008876382887722 4.5827e-08 au
tp 2457782.967968931223
(2017-Jan-29.46796893)
1.9167e-05 TDB
node 82.10801251896007 1.419e-05 deg
peri 204.2234201375509 1.46e-05 deg
i 13.53121905130603 4.7275e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      732  
   data-arc span      13377 days (36.62 yr)  
   first obs. used      1984-05-27  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51296  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-11 05:22:01  

Additional Information
 Jupiter MOID = 1.83881 au 
 T_jup = 3.429 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.392410709314282E-16 -9.602920453579783E-16 6.295462682249928E-14 5.753652767543525E-14 -4.873125603594818E-14 -5.33159190268767E-15
q -9.602920453579783E-16 2.100071675532717E-15 -1.248223139057756E-13 -1.213868362872711E-13 1.052869315653255E-13 1.065602079189418E-14
tp 6.295462682249928E-14 -1.248223139057756E-13 3.673628000326784E-10 3.594207885967988E-11 5.887096799105358E-11 -2.721132056463249E-12
node 5.753652767543525E-14 -1.213868362872711E-13 3.594207885967988E-11 2.013500365148831E-10 -1.898939831443102E-10 -2.245378619077664E-11
peri -4.873125603594818E-14 1.052869315653255E-13 5.887096799105358E-11 -1.898939831443102E-10 2.131703607810183E-10 2.161764101046997E-11
i -5.33159190268767E-15 1.065602079189418E-14 -2.721132056463249E-12 -2.245378619077664E-11 2.161764101046997E-11 2.234948655792235E-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 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. 2020-October); 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, 458-503.]
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

[ 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
1903-May-15 17:13 < 00:01 Earth 0.354543551383638 0.354541794892782 0.354545307874534 19.6372574147216 19.6368747079339 2416250.217163495 0.184521538319188 87.8288084477066 8.27113414884622 -4.26835362727923 684215.049995207 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
1930-Nov-15 08:43 < 00:01 Jupiter 1.83960278531221 1.83960254178508 1.83960302883934 3.3245406899966 3.18303241508658 2426295.863101588 0.150223803381286 35.651023295075 12.2067597266383 85.1717217282561 4130315.91835815 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
1945-Aug-16 07:08 < 00:01 Earth 0.320246855462796 0.320246349508616 0.320247361417887 15.3620585965391 15.3615169877278 2431683.797431116 0.130695969443007 38.5309767352445 9.93541195749428 51.4708719849036 3289652.39455651 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
1958-Jul-19 05:29 < 00:01 Earth 0.164105724918041 0.164105203749418 0.164106246089349 11.1454507073813 11.1439938421646 2436403.728238912 0.279401733350611 43.5425462663234 8.23624577497738 54.7995341474648 1970728.49328659 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
1966-Jul-21 12:23 < 00:01 Jupiter 1.86486163640401 1.86486141972421 1.86486185308381 3.30598894538696 3.16562164122741 2439328.016289101 0.206160652334542 37.7074703091796 10.5072981182372 87.1281236534309 4073972.8561171 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
1971-Jun-23 22:55 < 00:01 Earth 0.0518125348190983 0.0518116108573749 0.0518134587816728 10.7263340262412 10.7215386433446 2441126.454941215 0.303942135427534 47.261008094471 4.05973553516743 -12.9058508068436 475132.880432335 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
1984-Jun-19 01:10 < 00:01 Earth 0.030465681301355 0.0304654267682178 0.0304659358345719 10.9438294503501 10.9358349596574 2445870.548618469 0.0508571294371462 13.0123474843515 6.55987041123955 -14.7723481453922 386357.548668238 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
1997-Jul-06 21:31 < 00:01 Earth 0.114381248510417 0.114380884323797 0.114381612697244 10.6202694346807 10.6180757871688 2450636.396619360 0.106041844521793 19.999702722665 7.20948147593883 26.6878614994968 1200527.2876794 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2002-May-17 12:17 < 00:01 Jupiter 1.9479907925955 1.94799041201575 1.94799117317524 3.34053808808301 3.20773403423697 2452412.011955504 0.0929027410417932 47.4690885300893 15.9463093917287 79.4501608846044 4036856.60736074 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2010-Aug-13 02:04 < 00:01 Earth 0.280413137994867 0.280412608009049 0.280413667981099 14.0614990958092 14.0608233352949 2455421.585863514 0.140007647179013 32.837575421267 12.7033229036763 40.0680642321519 2030106.09958586 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2023-Sep-03 02:42 < 00:01 Earth 0.483043886352949 0.483043114861367 0.483044657844777 20.7159380157595 20.7156717447069 2460190.612477929 0.115613368658824 42.5383238136994 13.5949064836947 26.7671118685012 2491972.21228282 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2059-May-19 09:43 < 00:01 Earth 0.316383268820105 0.316381837614584 0.316384700025717 18.6634250408918 18.6629737955296 2473232.904791864 0.140951457567821 71.8234315947353 8.88097090914018 -6.51363688450908 798334.470918488 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2060-Oct-28 09:13 < 00:01 Jupiter 1.95043241494337 1.95043201675121 1.95043281313554 3.2712554780423 3.13569194317158 2473760.883879329 0.167117693853524 28.1642065595923 20.6684345183264 73.7878767496572 4435125.67995139 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2072-May-29 23:04 < 00:01 Earth 0.147033696247444 0.14703231729262 0.14703507520231 14.5041580135704 14.5029085555598 2477992.461049198 0.179970683717496 68.8835113196814 8.91312772955321 -3.46057037803176 322247.292875348 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2085-Jun-18 08:19 < 00:01 Earth 0.0279970775676654 0.0279965454262598 0.0279976097147604 11.042255914049 11.0336338462177 2482759.846518762 0.184733990655626 33.7111322724305 7.64644698360829 -39.2853964559178 365818.333988935 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2096-Oct-04 00:50 < 00:01 Jupiter 1.83002448252698 1.83002412332829 1.83002484172566 3.25036755599664 3.10470513348276 2486885.534647714 0.228959600108683 33.7601683591816 17.8491590655101 75.8300810041168 4482439.49786247 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2098-Aug-15 18:19 < 00:01 Earth 0.27618519911478 0.276184228600858 0.276186169632878 13.9931127053514 13.9924232465451 2487566.263378005 0.272066872568818 73.3046150638336 11.5201283432385 49.5159236608706 2267741.41357841 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2132-Oct-02 20:05 < 00:01 Jupiter 1.88161178334434 1.88161133527011 1.88161223141867 3.27256516741605 3.13199087825322 2500032.336928186 0.644676710262928 44.691461138073 17.6314896148259 75.4909640482992 4125955.24915203 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2134-May-23 13:29 < 00:01 Earth 0.263632189638586 0.263626858968682 0.26363752030918 17.4842634833204 17.4836854222047 2500630.062041948 0.496293651309703 266.671407898514 6.80590314735744 -4.60286287170561 436547.655089443 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2147-Jun-23 05:38 00:01 Earth 0.0469784830324891 0.0469740711209435 0.0469828950122158 10.6843966788877 10.6790869629087 2505408.734472283 1.28696813720212 237.436310431745 5.44876794844019 -22.0882879207541 504876.555531354 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2160-Aug-30 12:33 < 00:01 Earth 0.375722650591143 0.375722100003261 0.375723201179303 17.5974135953996 17.5970105990514 2510226.022818760 0.086464161435098 33.0895226371622 13.081281793826 37.4226843641595 2615667.44670425 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2183-May-25 20:53 00:01 Earth 0.236074245933267 0.236062238917175 0.236086252949814 16.765577540791 16.764904325539 2518529.370367658 1.20508512339045 598.966805505825 7.12044355236924 -1.63326805832399 136568.239289402 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2191-May-25 13:52 00:02 Jupiter 1.9223365184536 1.92233510179995 1.92233793510737 3.21459588232694 3.07447296013841 2521451.078002243 1.6590762826004 77.2997430396904 26.4208928762988 27.0296557150442 3963542.0055055 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
2196-Jul-22 20:23 00:05 Earth 0.166515068814358 0.166504149575009 0.166525989063067 10.8167919698708 10.8153125548002 2523336.349319913 4.87483789756708 845.360812105016 9.97072805240938 49.9072067606428 1657502.8653238 T 127 CATAB v2.0f-lin.ifort 2021-Jan-11 05:22:03 2021-Jan-11 05:22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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