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4488 Tokitada (1987 UK)
Classification: Main-belt Asteroid          SPK-ID: 2004488
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1439579164754423 3.7884e-08  
a 2.180948448363455 5.1008e-09 au
q 1.866983653796703 8.3841e-08 au
i 4.35236307036432 3.9591e-06 deg
node 218.3841399207374 4.0093e-05 deg
peri 184.6122550919655 4.1663e-05 deg
M 37.70654360721525 1.1375e-05 deg
tp 2458877.280128734766
(2020-Jan-28.78012873)
3.7111e-05 TDB
period 1176.431181748407
3.22
4.1271e-06
1.13e-08
d
yr
n .3060102499705672 1.0735e-09 deg/d
Q 2.494913242930207 5.8351e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2221  
   data-arc span      31897 days (87.33 yr)  
   first obs. used      1932-09-08  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:35:03  

Additional Information
 Earth MOID = .87564 au 
 Jupiter MOID = 2.88124 au 
 T_jup = 3.663 
[ 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 13.8   n/a MPO502196  
diameter diameter 4.500 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 24.25 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durkee, R.I. (2018) Minor Planet Bull. 45, 333-335.]
geometric albedo albedo 0.317   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4488 Tokitada (1987 UK)          Discovered 1987-Oct-21 by Suzuki and Urata at Toyota
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1987 UK = 1932 RF = 1974 SV2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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