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114 Kassandra (A871 OA)
Classification: Main-belt Asteroid          SPK-ID: 2000114
[ 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 124 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1375187222502431 3.2404e-08  
a 2.676252356124544 5.9275e-09 au
q 2.308217551691095 8.7249e-08 au
i 4.943943975294822 3.4342e-06 deg
node 164.0646285833834 3.6998e-05 deg
peri 352.7514861292381 3.8658e-05 deg
M 196.3182599121982 1.2279e-05 deg
tp 2459927.587625643128
(2022-Dec-14.08762564)		 5.554e-05 TDB
period 1599.149331447221
4.38		 5.3128e-06
1.455e-08		 d
yr
n .2251196888999741 7.4791e-10 deg/d
Q 3.044287160557994 6.7427e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3198  
   data-arc span      43239 days (118.38 yr)  
   first obs. used      1902-09-03  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43898  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:43:32  

Additional Information
 Earth MOID = 1.31751 au 
 Jupiter MOID = 1.94033 au 
 T_jup = 3.360 
[ 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 8.31   n/a E2021B10 IRAS observations used: 17
diameter diameter 94.178 km 0.954 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.7431 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Gil Hutton, R.; Blain, A. (1988) Minor Planet Bull. 15, 39-40.]
[Piironen, J.; Lagerkvist, C.-I.; Erikson, A.; Oja, T.; et al. (1998) Astron. Astrophys. Suppl. Ser. 128, 525-540.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Broz, M.; Lehky, M.; et al. (2017) Icarus 304, 101-109.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.089   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.768   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=.00, mean=3.22, max.=9.27) deg.
U-B UB 0.269   0.182 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=.00, mean=3.22, max.=9.27) deg.
Tholen spectral type spec_T T   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Xk   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)

114 Kassandra (A871 OA)          Discovered 1871-Jul-23 by Peters, C. H. F. at Clinton
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
1916-Jan-19 16:00 < 00:01 Jupiter 1.97315681634738 1.97315650225867 1.97315713043631 2.74391132867628 2.58273185129729 2420882.166513682 0.8532485282064 63.7413818363029 7.09367835487022 84.2179220371992 4077944.02834583 T 124 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:41 2021-Feb-24 00:43
1950-Aug-28 00:16 < 00:01 Jupiter 1.96458369509113 1.96458339556324 1.96458399461902 2.50599207484928 2.32759621995458 2433521.511442846 0.538129992586951 40.9292965732687 9.45584001345967 -84.6654377232543 3522869.34889993 T 124 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:41 2021-Feb-24 00:43
2034-Jan-05 04:51 < 00:01 Jupiter 1.94215477199188 1.94215451303176 1.942155030952 2.5162684964147 2.33652666842391 2463967.701819450 0.264293015885344 31.6355440557981 9.00434384749347 -88.9842431868114 3598454.15694439 T 124 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:41 2021-Feb-24 00:43
2117-May-15 12:33 00:01 Jupiter 1.93856907656066 1.93856883107448 1.93856932204684 2.56398177292215 2.38749636457395 2494413.022735070 1.01129689180682 73.2115382774338 8.19434005878108 -89.3312534788743 3738578.1968648 T 124 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:41 2021-Feb-24 00:43
2200-Sep-25 00:59 00:02 Jupiter 1.94994151548217 1.94994112074783 1.94994191021828 2.64092876787697 2.4709790891526 2524860.541117197 1.78902938433263 123.563999894253 7.06638820477279 86.1728189813341 3904865.19716039 T 124 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:41 2021-Feb-24 00:43
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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