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JPL Small-Body Database Browser
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204 Kallisto
Classification: Main-belt Asteroid          SPK-ID: 2000204
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1743182828823622 3.3361e-08  
a 2.670565668781328 8.8524e-09 au
q 2.205037247074779 8.8922e-08 au
i 8.287429590194721 4.2186e-06 deg
node 205.1126349411645 2.8396e-05 deg
peri 55.19693952826559 3.1183e-05 deg
M 96.60230825133844 1.2951e-05 deg
tp 2458172.751670316890
(2018-Feb-23.25167032)
5.7021e-05 TDB
period 1594.055064246211
4.36
7.926e-06
2.17e-08
d
yr
n .2258391244283866 1.1229e-09 deg/d
Q 3.136094090487876 1.0396e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2671  
   data-arc span      51085 days (139.86 yr)  
   first obs. used      1879-10-08  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48707  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:06:15  

Additional Information
 Earth MOID = 1.20236 au 
 Jupiter MOID = 1.94931 au 
 T_jup = 3.345 
[ 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 8.89   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 24
diameter diameter 48.566 km 0.255 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 19.489 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2010) Minor Planet Bull. 37, 21-24.]
geometric albedo albedo 0.194   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.813   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=4.52, mean=10.89, max.=14.66) deg.
U-B UB 0.415   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=4.52, mean=10.89, max.=14.66) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

204 Kallisto          Discovered 1879-Oct-08 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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