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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .072107328036474 5.5355e-08  
a 3.00467187702823 2.4032e-08 AU
q 2.788013016349387 1.7087e-07 AU
i 11.3743954885155 5.9043e-06 deg
node 113.427083716302 3.3627e-05 deg
peri 334.5339394486252 5.4437e-05 deg
M 13.77739209235572 4.4643e-05 deg
tp 2456927.695449894146
(2014-Sep-27.19544989)
0.00023569 JED
period 1902.365691737092
5.21
2.2824e-05
6.249e-08
d
yr
n .1892380637243705 2.2704e-09 deg/d
Q 3.221330737707072 2.5765e-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      .50019  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 17:28:18  

Additional Information
 Earth MOID = 1.80881 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. 2014-Mar-01) 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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