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1787 Chiny (1950 SK)
Classification: Main-belt Asteroid          SPK-ID: 2001787
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04915322716637786 3.8045e-08  
a 3.003036755261959 1.4203e-08 au
q 2.855427807441585 1.1712e-07 au
i 8.915809516127084 4.6854e-06 deg
node 307.1622612479692 2.5558e-05 deg
peri 271.1878794822465 5.8032e-05 deg
M 298.4351379798909 5.4154e-05 deg
tp 2459325.564698325136
(2021-Apr-21.06469833)
0.0002865 TDB
period 1900.813021538575
5.20
1.3485e-05
3.692e-08
d
yr
n .1893926419488674 1.3436e-09 deg/d
Q 3.150645703082332 1.4901e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2264  
   data-arc span      32553 days (89.13 yr)  
   first obs. used      1930-12-20  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44384  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:04:49  

Additional Information
 Earth MOID = 1.86578 au 
 Jupiter MOID = 1.93048 au 
 T_jup = 3.232 
[ 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 11.3   n/a MPO250215  
diameter diameter 19.900 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.093   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1787 Chiny (1950 SK)          Discovered 1950-Sep-19 by Arend, S. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1950 SK = 1930 YY = 1950 TB3 = 1958 DM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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