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1220 Crocus (1932 CU)
Classification: Main-belt Asteroid          SPK-ID: 2001220
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07159783565109143 6.2031e-08  
a 3.003037018557209 2.4825e-08 AU
q 2.788026067648406 1.917e-07 AU
i 11.37508619234753 6.4924e-06 deg
node 113.4256449423156 3.8279e-05 deg
peri 334.5466377022229 6.3975e-05 deg
M 335.8996756792591 5.2332e-05 deg
tp 2456927.750600880206
(2014-Sep-27.25060088)
0.00027657 JED
period 1900.813271523053
5.20
2.357e-05
6.453e-08
d
yr
n .1893926170409917 2.3484e-09 deg/d
Q 3.218047969466011 2.6602e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1186  
   data-arc span      29921 days (81.92 yr)  
   first obs. used      1932-02-11  
   last obs. used      2014-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51043  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jan-21 20:57:58  

Additional Information
 Earth MOID = 1.80848 AU 
 T_jup = 3.218 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.72 mag n/a PDS3 (MPC 17261)  
magnitude slope G 0.23   n/a PDS3 (MPC 17261) Fit
rotation period rot_per 737. h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Binzel, R.P. (1985) Icarus 63, 1, 99-108.]
[Binzel, R.P. (1987) Icarus 72, 135-208.]

1220 Crocus (1932 CU)          Discovered 1932-Feb-11 by Reinmuth, K. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1932 CU = 1955 PC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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