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21174 (1994 CG12)
Classification: Main-belt Asteroid          SPK-ID: 2021174
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1557838364239905 2.8801e-08  
a 2.414679435579484 8.9745e-09 au
q 2.038511409370796 6.9658e-08 au
i 3.280631926888976 3.7305e-06 deg
node 58.73139679147381 6.3898e-05 deg
peri 215.7200985384187 6.5617e-05 deg
M 309.7309154905625 1.6884e-05 deg
tp 2459391.875407014326
(2021-Jun-26.37540701)
6.477e-05 TDB
period 1370.527177836766
3.75
7.6406e-06
2.092e-08
d
yr
n .2626726458414508 1.4644e-09 deg/d
Q 2.790847461788172 1.0373e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1622  
   data-arc span      10057 days (27.53 yr)  
   first obs. used      1992-11-25  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49057  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:58:30  

Additional Information
 Earth MOID = 1.02147 au 
 Jupiter MOID = 2.31451 au 
 T_jup = 3.498 
[ 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 14.71   n/a E2021B10  
diameter diameter 7.310 km 0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21174 (1994 CG12)          Discovered 1994-Feb-07 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 CG12 = 1998 HW130 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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