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21175 (1994 CP12)
Classification: Main-belt Asteroid          SPK-ID: 2021175
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1366053352858032 3.0354e-08  
a 2.281756356147231 7.1801e-09 au
q 1.970056264075226 6.8033e-08 au
i 3.089340636058923 4.0903e-06 deg
node 4.369194337471479 5.9947e-05 deg
peri 224.9705896284849 6.1829e-05 deg
M 279.6280932013572 1.5627e-05 deg
tp 2459677.563274424259
(2022-Apr-08.06327442)
5.5063e-05 TDB
period 1258.9321670099
3.45
5.9423e-06
1.627e-08
d
yr
n .2859566300979018 1.3498e-09 deg/d
Q 2.593456448219237 8.161e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1515  
   data-arc span      10391 days (28.45 yr)  
   first obs. used      1992-11-21  
   last obs. used      2021-05-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49258  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:13:09  

Additional Information
 Earth MOID = .961903 au 
 Jupiter MOID = 2.39432 au 
 T_jup = 3.591 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.05   n/a E2021B10  
diameter diameter 4.225 km 0.980 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.099   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

21175 (1994 CP12)          Discovered 1994-Feb-07 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 CP12 = 1999 VB164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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