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JPL Small-Body Database Browser
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65 Cybele
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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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 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120460173817673 3.3163e-08  
a 3.424837726649317 9.682e-09 au
q 3.041098299199435 1.1385e-07 au
i 3.564035705999775 3.8695e-06 deg
node 155.6184016533616 5.6409e-05 deg
peri 102.8303090208753 5.8725e-05 deg
M 323.0142287289909 1.7715e-05 deg
tp 2459238.343125858074
(2021-Jan-23.84312586)
0.00011444 TDB
period 2315.039604866148
6.34
9.8169e-06
2.688e-08
d
yr
n .1555048990277705 6.5942e-10 deg/d
Q 3.808577154099198 1.0767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3342  
   data-arc span      58036 days (158.89 yr)  
   first obs. used      1861-03-12  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:16:06  

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          Discovered 1861-Mar-08 by Tempel, E. W. at Marseille
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
1927-May-03 06:10 00:01 Jupiter 1.57626578734143 1.57626501114129 1.57626656354175 2.50648327465764 2.28204688481185 2425003.756703216 1.32347533755696 63.2539949203679 10.0372536937647 -77.7221753760469 2261693.51254823 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
1941-Mar-02 07:22 00:01 Jupiter 1.19838144714538 1.19838109289376 1.19838180139701 0.927580729488685 n/a 2430055.807017019 1.0630384930279 53.6808174105872 17.6426690251319 88.9942945392038 10156001.9027075 F 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
1954-Dec-28 23:55 < 00:01 Jupiter 1.4827787404001 1.48277818678444 1.48277929401466 1.49817640514841 1.04978691025199 2435105.496537330 0.835148745763833 148.681108582505 80.9057413103272 -17.5283331444378 1691201.99004516 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
1968-Sep-14 10:39 < 00:01 Jupiter 1.97036447650672 1.9703640507441 1.97036490226935 3.38865930380945 3.25933269382483 2440113.943549750 0.542225982876975 41.2182263404084 15.5038493473755 -80.2601482158197 4023404.79540214 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
2009-Feb-22 11:37 < 00:01 Jupiter 1.94677244242693 1.94677203289368 1.94677285196008 4.04706722676055 3.93809240733512 2454884.984143496 0.172712352125671 27.0706375175938 17.3620017129677 -80.6576624830056 4217873.40491409 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
2022-Nov-12 13:45 < 00:01 Jupiter 1.44637634731349 1.44637594598821 1.44637674863852 2.00772104200478 1.69106767092667 2459896.073099705 0.353866741507833 44.7596253120528 20.3076789774517 88.0601213690743 2516071.45931559 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
2036-Sep-07 06:30 < 00:01 Jupiter 1.21956975250685 1.21956936806178 1.21957013695199 0.777721576949781 n/a 2464943.770871106 0.566927331509993 36.8016723478205 17.2237386405258 -74.9992855293847 10307689.5856524 F 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
2050-Jul-04 07:01 < 00:01 Jupiter 1.59703132945937 1.59703074257931 1.59703191633899 1.91712533890889 1.61697968182708 2469991.792280709 0.812499687905621 50.5017653647108 29.4014057925021 87.591018339083 1783247.11232642 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
2104-Aug-20 20:21 00:02 Jupiter 1.83480706956981 1.83480611345024 1.83480802568979 3.65003782529755 3.52129148887154 2489762.347603485 1.55106062364803 69.2813444555136 19.4773885481574 -58.4906883423485 2791330.35201772 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
2118-May-31 05:13 00:02 Jupiter 1.34501155013377 1.3450107213172 1.34501237894796 1.52887192249797 1.03824233041581 2494793.717698233 1.97922667150652 268.729090059624 70.9630413283818 17.1301858996122 1295834.40154219 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
2132-Mar-24 15:21 00:02 Jupiter 1.27524830738054 1.2752475336375 1.27524908112362 0.857058127534219 n/a 2499840.139472301 2.17936487858285 44.1652858680024 35.2447297943179 53.8512177024421 5057358.3528658 F 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
2146-Jan-11 02:48 00:02 Jupiter 1.72957210223778 1.72957085967041 1.72957334480584 2.38881737526063 2.17416407198575 2504880.616514315 2.26996699693816 102.107563513062 10.7963901045637 -78.7848225506687 2118114.05663602 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16
2200-Feb-25 20:12 00:03 Jupiter 1.69867294188024 1.69867126023156 1.69867462353163 3.12369778227933 2.95976557550082 2524649.341404173 3.05023032751982 145.20017428279 17.1023198688665 -66.7421618907062 2475158.94548951 T 81 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:21 2020-Feb-22 15:16

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