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1973 Colocolo (1968 OA)
Classification: Main-belt Asteroid          SPK-ID: 2001973
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0773013507815488 3.5093e-08  
a 3.182349733001655 1.3355e-08 au
q 2.936349799981326 1.1137e-07 au
i 10.57556071239452 4.3416e-06 deg
node 183.0555611642959 1.7184e-05 deg
peri 163.958294971447 2.9266e-05 deg
M 22.37655232125027 2.2755e-05 deg
tp 2458871.612453019298
(2020-Jan-23.11245302)
0.00013112 TDB
period 2073.577566682995
5.68
1.3053e-05
3.574e-08
d
yr
n .1736129893495497 1.0929e-09 deg/d
Q 3.428349666021984 1.4387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2421  
   data-arc span      23935 days (65.53 yr)  
   first obs. used      1955-04-20  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46263  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:13:43  

Additional Information
 Earth MOID = 1.93185 au 
 Jupiter MOID = 1.98452 au 
 T_jup = 3.168 
[ 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 12.2   n/a MPO435715  
diameter diameter 26.269 km 0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.988 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.026   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1973 Colocolo           Discovered 1968 July 18 by C. Torres on exposures by S. Cofre and himself at the University of Chile, Cerro El Roble Station.
Named for the old and wise Araucanian chief who succeeded in unifying the Araucanian Indian tribes against the Spanish conquerors.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5358Last Updated: 2006-03-21

Alternate Designations
 1968 OA = 1969 VV1 = 1972 GO1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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