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

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07394882192114591 3.3625e-08  
a 3.004249315135028 1.3749e-08 au
q 2.782088617523383 1.0269e-07 au
i 11.36446064852393 3.6274e-06 deg
node 113.33096036556 2.1769e-05 deg
peri 332.8269131761444 3.6198e-05 deg
M 34.07964277979871 2.8305e-05 deg
tp 2458820.449257678578
(2019-Dec-02.94925768)
0.00014946 TDB
period 1901.964397177716
5.21
1.3057e-05
3.575e-08
d
yr
n .1892779909730152 1.2994e-09 deg/d
Q 3.226410012746673 1.4766e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3137  
   data-arc span      32421 days (88.76 yr)  
   first obs. used      1932-02-11  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38703  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:59:15  

Additional Information
 Earth MOID = 1.80366 au 
 Jupiter MOID = 1.93315 au 
 T_jup = 3.218 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.6   n/a MPO502165  
magnitude slope G 0.23   n/a PDS3 (MPC 17261) Fit
diameter diameter 17.866 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 491.4 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pilcher, F.; Benishek, V.; Franco, L.; Harris, A.W.; et al. (2015). Minor Planet Bull. 42, 155-157.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.114   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

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

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