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53 Kalypso (A858 GA)
Classification: Main-belt Asteroid          SPK-ID: 2000053
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 161 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .204808142050603 3.2596e-08  
a 2.618931682404043 4.9868e-09 au
q 2.082553150373411 8.5609e-08 au
i 5.171678256363505 4.1753e-06 deg
node 143.5179330336061 4.1428e-05 deg
peri 313.4848805818162 4.2188e-05 deg
M 157.2710309972251 8.926e-06 deg
tp 2458324.213194623415
(2018-Jul-24.71319462)
3.7154e-05 TDB
period 1548.048921608877
4.24
4.4216e-06
1.211e-08
d
yr
n .2325507902074919 6.6422e-10 deg/d
Q 3.155310214434675 6.0082e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3006  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      56414 days (154.45 yr)  
   first obs. used      1866-01-01  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45312  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:06:22  

Additional Information
 Earth MOID = 1.10331 au 
 Jupiter MOID = 2.0327 au 
 T_jup = 3.370 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.9   n/a MPO473760 IRAS observations used: 12
diameter diameter 97.262 km 26.598 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 9.036 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F.; Pray, D.P. (2010) Minor Planet Bull. 37, 75-76.]
[Pilcher, F. (2011) Minor Planet Bull. 38, 206-208.]
[Franco, L.; Pilcher, F.; Pray, D.P.; Maurice, A. (2016) Minor Planet Bull. 43, 224-226.]
geometric albedo albedo 0.028   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.705   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=3.20, mean=10.87, max.=26.64) deg.
U-B UB 0.318   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=3.20, mean=10.87, max.=26.64) deg.
Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

53 Kalypso (A858 GA)          Discovered 1858-Apr-04 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A858 GA = 1951 CD2 = 1951 CE2 = 1972 JB = A917 BD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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