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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 122 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1367537295552031 3.2402e-08  
a 2.678060927392303 6.1438e-09 au
q 2.31182610759534 8.7263e-08 au
i 4.940905663085782 3.4361e-06 deg
node 164.0738342091793 3.7621e-05 deg
peri 352.7671804114873 3.9314e-05 deg
M 151.2944130666026 1.2335e-05 deg
tp 2458327.756520910156
(2018-Jul-28.25652091)
5.4106e-05 TDB
period 1600.770627040461
4.38
5.5086e-06
1.508e-08
d
yr
n .2248916827425649 7.739e-10 deg/d
Q 3.044295747189266 6.984e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3022  
   data-arc span      43165 days (118.18 yr)  
   first obs. used      1902-09-03  
   last obs. used      2020-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:51:08  

Additional Information
 Earth MOID = 1.32133 au 
 Jupiter MOID = 1.9411 au 
 T_jup = 3.359 
[ 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 8.3   n/a MPO492749 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

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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
1916-Jan-19 16:00 < 00:01 Jupiter 1.97315681511629 1.97315650083388 1.97315712939893 2.74391130758432 2.58273182878535 2420882.166505821 0.858023985222951 64.152542030656 7.10364752477394 84.2558732820304 4072392.83541375 T 122 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:16 2020-Dec-18 01:51
1950-Aug-28 00:16 < 00:01 Jupiter 1.96458369524168 1.96458339555856 1.96458399492479 2.50599207572205 2.32759622090843 2433521.511435501 0.54033753212021 41.1768230080641 9.47504725508592 -84.596267137004 3514599.065541 T 122 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:16 2020-Dec-18 01:51
2034-Jan-05 04:51 < 00:01 Jupiter 1.94215477123865 1.94215451185106 1.94215503062623 2.51626849471323 2.33652666651915 2463967.701823063 0.269517781985491 32.1518471052585 9.02481534747517 -88.7743962351072 3596072.21787057 T 122 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:16 2020-Dec-18 01:51
2117-May-15 12:33 00:01 Jupiter 1.93856907669461 1.93856883114452 1.9385693222447 2.56398177718472 2.38749636916426 2494413.022742233 1.02303425974366 74.179365457968 8.19490660104188 -89.3295101902743 3738086.12371048 T 122 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:16 2020-Dec-18 01:51
2200-Sep-25 00:59 00:02 Jupiter 1.94994151941707 1.94994112088553 1.9499419179505 2.64092877896924 2.47097910136251 2524860.541129678 1.80754311687877 124.96304696322 7.07072814944762 86.1565747823622 3898370.12789631 T 122 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:16 2020-Dec-18 01:51
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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