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19121 (1985 CY1)
Classification: Main-belt Asteroid          SPK-ID: 2019121
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .260108974768859 3.0704e-08  
a 3.188722843603403 1.799e-08 au
q 2.359307413931682 9.6581e-08 au
i 12.33369193406737 4.0976e-06 deg
node 158.8979667119282 2.0999e-05 deg
peri 340.2684249061096 2.3317e-05 deg
M 148.823560068941 9.6031e-06 deg
tp 2458340.709237318526
(2018-Aug-10.20923732)
5.3109e-05 TDB
period 2079.809637815052
5.69
1.7601e-05
4.819e-08
d
yr
n .173092764575415 1.4649e-09 deg/d
Q 4.018138273275126 2.267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1322  
   data-arc span      12963 days (35.49 yr)  
   first obs. used      1985-02-12  
   last obs. used      2020-08-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49899  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:46:09  

Additional Information
 Earth MOID = 1.3759 au 
 Jupiter MOID = 1.0448 au 
 T_jup = 3.109 
[ 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 13.9   n/a MPO435876  
diameter diameter 7.756 km 0.255 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.107   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19121 (1985 CY1)          Discovered 1985-Feb-12 by Debehogne, H. at La Silla
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1985 CY1 = 1991 GS9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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