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JPL Small-Body Database Browser
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53 Kalypso
Classification: Main-belt Asteroid          SPK-ID: 2000053
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 159 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2048081425089404 3.2664e-08  
a 2.618931682387376 4.9911e-09 au
q 2.082553149159803 8.5798e-08 au
i 5.171677686786056 4.366e-06 deg
node 143.5179303001122 4.1853e-05 deg
peri 313.4848834217714 4.267e-05 deg
M 157.2710309005258 9.038e-06 deg
tp 2458324.213195045691
(2018-Jul-24.71319505)
3.7664e-05 TDB
period 1548.048921594099
4.24
4.4254e-06
1.212e-08
d
yr
n .2325507902097119 6.6479e-10 deg/d
Q 3.155310215614948 6.0133e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2840  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      56277 days (154.08 yr)  
   first obs. used      1866-01-01  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46536  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:15:48  

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          Discovered 1858-Apr-04 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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