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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 ]

[ show orbit diagram ]
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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