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65 Cybele (A861 EB)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000065
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120460131471999 3.2237e-08  
a 3.42483772518755 9.3722e-09 au
q 3.041098312404159 1.1118e-07 au
i 3.564035445739328 3.7776e-06 deg
node 155.6184005521319 5.5504e-05 deg
peri 102.830307963326 5.7746e-05 deg
M 323.0142316161332 1.7011e-05 deg
tp 2459238.343107139555
(2021-Jan-23.84310714)
0.00010986 TDB
period 2315.039603384012
6.34
9.5028e-06
2.602e-08
d
yr
n .1555048991273279 6.3832e-10 deg/d
Q 3.80857713797094 1.0422e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3912  
   data-arc span      58218 days (159.39 yr)  
   first obs. used      1861-03-12  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45119  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:09:02  

Additional Information
 Earth MOID = 2.02868 au 
 Jupiter MOID = 1.25999 au 
 T_jup = 3.129 
[ 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 6.8   n/a MPO473761 IRAS observations used: 17
magnitude slope G 0.01   n/a PDS3 (MPC 17257) Fit
diameter diameter 237.26 km 4.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
rotation period rot_per 6.0814 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Schober, H.J.; Scaltriti, F.; Zappala, V.; Harris, A.W. (1980) Astron. Astrophys. 91, 1-6.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F.; Stephens, R.D. (2010) Minor Planet Bull. 37, 8.]
[Pilcher, F. (2012) Minor Planet Bull. 39, 57-60.]
[Pilcher, F. (2014) Minor Planet Bull. 41, 250-252.]
[Franco, L.; Pilcher, F. (2015) Minor Planet Bull. 42, 204-206.]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Viikinkoski, M.; Hanus, J.; Kaasalainen, M.; Marchis, F.; Durech, J. (2017) Astron. Astrophys. 607, A117.]
geometric albedo albedo 0.0706   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
B-V BV 0.690   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=17; phase (min.=1.75, mean=10.38, max.=18.00) deg.
U-B UB 0.271   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=1.75, mean=4.51, max.=10.04) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xc   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)

65 Cybele (A861 EB)          Discovered 1861-Mar-08 by Tempel, E. W. at Marseille
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
1927-May-03 06:10 00:01 Jupiter 1.57626574511518 1.57626499557385 1.5762664946567 2.50648307822562 2.28204666275296 2425003.756737554 1.30458952268633 62.2088163260557 9.78970709058204 -78.0732769893329 2333926.72805399 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
1941-Mar-02 07:22 00:01 Jupiter 1.19838144837834 1.1983810967537 1.19838180000299 0.927580697864178 n/a 2430055.807044473 1.05088376532268 52.7908659046977 17.483877516733 88.4744145915003 10246413.5897494 F 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
1954-Dec-28 23:55 < 00:01 Jupiter 1.48277877096383 1.48277824333891 1.48277929858774 1.49817650927278 1.04978707006664 2435105.496552701 0.825322259196887 141.182914175323 78.71478837714 -18.3981167008201 1784838.4921105 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
1968-Sep-14 10:39 < 00:01 Jupiter 1.97036449188539 1.97036407293821 1.97036491083256 3.38865927260235 3.25933266240889 2440113.943544837 0.540106877672434 40.8125302854053 15.2123593019385 -80.0658174417183 4110661.69770603 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
2009-Feb-22 11:37 < 00:01 Jupiter 1.94677242484741 1.94677202579798 1.94677282389674 4.04706710526867 3.93809228148365 2454884.984143087 0.171324752862661 26.9977494849285 16.8888718807878 -80.4115965073722 4345217.07413242 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
2022-Nov-12 13:45 < 00:01 Jupiter 1.44637633922108 1.44637594067835 1.44637673776363 2.00772094282018 1.69106755123217 2459896.073099645 0.351073122451927 44.0281495799783 20.1236102741822 87.2959862762582 2537206.00751284 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
2036-Sep-07 06:30 < 00:01 Jupiter 1.21956975871589 1.21956938009478 1.21957013733707 0.777721622662939 n/a 2464943.770861073 0.55820023590387 36.3225479467899 16.9182678012093 -74.8857477103685 10488713.8694848 F 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
2050-Jul-04 07:01 < 00:01 Jupiter 1.59703133076051 1.59703074468213 1.59703191683844 1.91712536964891 1.61697971854033 2469991.792262261 0.799111815162243 50.0361006834709 28.8153117554564 86.5213623030143 1800907.90019938 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
2104-Aug-20 20:20 00:02 Jupiter 1.83480707897033 1.83480612367898 1.83480803426199 3.65003782149582 3.5212914856025 2489762.347566567 1.52889614837303 68.5861248816972 19.0345065887912 -57.9742477103034 2847409.18665781 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
2118-May-31 05:13 00:02 Jupiter 1.3450115675799 1.34501074349773 1.34501239165971 1.52887195226507 1.0382423821172 2494793.717657438 1.95219112015516 266.294663445466 69.681868692065 17.0401044481269 1309785.51952483 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
2132-Mar-24 15:21 00:02 Jupiter 1.27524829845934 1.27524752520309 1.27524907171562 0.857058081688795 n/a 2499840.139401571 2.14865352773261 43.8534665556728 34.8484381669195 51.6866724737042 5069957.32476676 F 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
2146-Jan-11 02:48 00:02 Jupiter 1.72957207125681 1.72957083456642 1.72957330794788 2.38881722554006 2.17416390344862 2504880.616446595 2.23443825668486 100.404000168992 10.5468866094205 -78.6788034042446 2146305.23816972 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09
2200-Feb-25 20:11 00:03 Jupiter 1.69867299163231 1.69867131851769 1.69867466474952 3.12369796903834 2.95976577753816 2524649.341315431 3.00679319743409 143.316532013325 16.6453696787806 -66.5042301003973 2544007.90157021 T 84 CATAB v2.0f-lin.ifort 2020-Aug-24 22:09:35 2020-Aug-24 22:09

Alternate Designations
 A861 EB = 1949 YQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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