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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1559077873197796 2.8731e-08  
a 2.414924488703738 8.4606e-09 au
q 2.038418955125588 6.9544e-08 au
i 3.280523833887562 3.7186e-06 deg
node 58.73034688008818 6.2904e-05 deg
peri 215.7444333316871 6.4485e-05 deg
M 1.199212719232626 1.5875e-05 deg
tp 2459391.933878268079
(2021-Jun-26.43387827)
6.0438e-05 TDB
period 1370.735814529493
3.75
7.2035e-06
1.972e-08
d
yr
n .2626326650139877 1.3802e-09 deg/d
Q 2.791430022281888 9.7797e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      10432 days (28.56 yr)  
   first obs. used      1992-11-25  
   last obs. used      2021-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48799  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:06:15  

Additional Information
 Earth MOID = 1.02307 au 
 Jupiter MOID = 2.31289 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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