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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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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 89 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1122111226845788 3.1961e-08  
a 3.425276955754072 8.6223e-09 au
q 3.040922783043291 1.1012e-07 au
i 3.564043305486755 3.7612e-06 deg
node 155.6154966186734 5.5387e-05 deg
peri 102.88663226106 5.7606e-05 deg
M 354.0758621423672 1.693e-05 deg
tp 2459238.603478223537
(2021-Jan-24.10347822)
0.00010896 TDB
period 2315.484968466694
6.34
8.743e-06
2.394e-08
d
yr
n .1554749889991256 5.8706e-10 deg/d
Q 3.809631128464853 9.5899e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3971  
   data-arc span      58449 days (160.02 yr)  
   first obs. used      1861-03-12  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45021  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:48:06  

Additional Information
 Earth MOID = 2.02682 au 
 Jupiter MOID = 1.25813 au 
 T_jup = 3.128 
[ 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 6.89   n/a MPCxxxxx 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. 2020-October); 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 06:09 00:01 Jupiter 1.57626593756697 1.57626522122175 1.57626665391227 2.50648403874382 2.2820477477874 2425003.756506024 1.23141551265867 59.6495300849018 9.72649666724116 -78.2747684787781 2361069.9867531 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
1941-Mar-02 07:22 < 00:01 Jupiter 1.19838150530009 1.19838115687584 1.19838185372435 0.927581074005044 n/a 2430055.806849632 0.992258882011661 51.318469431083 17.3509021523423 88.9258208319146 10326593.826976 F 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
1954-Dec-28 23:55 < 00:01 Jupiter 1.48277870883229 1.4827781963232 1.48277922134046 1.49817639281466 1.04978688407151 2435105.496469404 0.780181055100867 139.324137150042 77.4517640883988 -19.3217010365881 1831440.60427434 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
1968-Sep-14 10:39 < 00:01 Jupiter 1.97036445313058 1.97036404477793 1.97036486148323 3.38865934807982 3.25933273901566 2440113.943509262 0.511348723889703 39.9122931536398 14.9954024213017 -80.7957786208506 4165501.70778286 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
2009-Feb-22 11:37 < 00:01 Jupiter 1.94677245806633 1.94677206274341 1.94677285338925 4.04706728067829 3.93809246424276 2454884.984133933 0.170145726395107 26.9490032568852 16.7260982373186 -80.4876363190287 4383318.11964065 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
2022-Nov-12 13:45 < 00:01 Jupiter 1.44637638967506 1.4463759961201 1.44637678322986 2.00772134870783 1.69106804711556 2459896.073068836 0.338088502163055 43.676146190311 20.0560887219186 87.272581615127 2556400.971892 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
2036-Sep-07 06:30 < 00:01 Jupiter 1.21956979168911 1.21956941662035 1.21957016675794 0.777721599860094 n/a 2464943.770805074 0.530633438382298 36.0972437998498 16.8026721341422 -75.1006882809214 10568965.565108 F 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
2050-Jul-04 07:01 < 00:01 Jupiter 1.59703126346637 1.59703069620068 1.5970318307316 1.91712533752794 1.61697966844797 2469991.792209405 0.756934395060095 48.9631747847304 28.3880185400504 87.8512168403947 1839237.39246267 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
2104-Aug-20 20:21 00:01 Jupiter 1.83480710772219 1.8348061967928 1.83480801865188 3.65003808717128 3.52129176377025 2489762.347605272 1.44453297734017 65.4001435717592 18.9202305600473 -58.3242615942455 2879274.23716615 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
2118-May-31 05:13 00:02 Jupiter 1.34501160790692 1.34501082211686 1.34501239369484 1.52887230034144 1.03824291621662 2494793.717683857 1.84416784283899 254.363536534147 69.4529735070525 16.9203800222456 1337913.55687833 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
2132-Mar-24 15:21 00:02 Jupiter 1.2752483287184 1.27524758786203 1.27524906957478 0.857058195733714 n/a 2499840.139533928 2.0294095572983 42.4788535490105 34.2550685748905 56.5813406157969 5263555.34169175 F 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
2146-Jan-11 02:48 00:02 Jupiter 1.72957215469128 1.72957098092604 1.72957332845701 2.38881777004599 2.17416451382351 2504880.616663625 2.10983143621567 95.3899043915965 10.4883041647088 -78.8070473748761 2161353.05729681 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49
2200-Feb-25 20:12 00:03 Jupiter 1.69867268557818 1.69867110088651 1.69867427027216 3.12369691607254 2.9597646368285 2524649.341795775 2.83883209997167 135.700965408702 16.5652997950062 -66.5893981443554 2559977.87267702 T 89 CATAB v2.0g-lin.ifort 2021-May-03 17:49:03 2021-May-03 17:49

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