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204 Kallisto (A879 TA)
Classification: Main-belt Asteroid          SPK-ID: 2000204
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1738795028722404 1.3761e-08  
a 2.671449738719214 7.7231e-09 au
q 2.206939386202541 3.6759e-08 au
i 8.285594485446477 2.6017e-07 deg
node 205.0845264596551 1.4768e-06 deg
peri 55.37210344114612 5.0951e-06 deg
M 276.107209121955 7.2201e-06 deg
tp 2459768.155941454788
(2022-Jul-07.65594145)
3.298e-05 TDB
period 1594.846678998
4.37
6.916e-06
1.893e-08
d
yr
n .2257270273943691 9.7886e-10 deg/d
Q 3.135960091235888 9.066e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3811  
   data-arc span      51763 days (141.72 yr)  
   first obs. used      1879-10-08  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:41:30  

Additional Information
 Earth MOID = 1.20468 au 
 Jupiter MOID = 1.94783 au 
 T_jup = 3.344 
[ 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 8.91   n/a E2021B10 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. 2020-October); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2010) Minor Planet Bull. 37, 21-24.]
[Franco, L.; Marchini, A.; Scarfi, G.; Bacci, P.; et al. (2020) Minor Planet Bull. 47, 144-147.]
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 (A879 TA)          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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