Orbit Fit and Astrometric record for 182222

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 182222    
# Created Sat Dec 16 02:36:40 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   30 observations of   30
# Arc:  15.14y
# First observation: 2000/12/16
#  Last observation: 2016/02/04
# Chi-squared of fit:   126.32 DOF:   54 RMS:  0.36
# Min/Max residuals:    -0.86    1.05
# Exact a, adot, b, bdot, g, gdot:
  1.608588E-05  2.118284E-02  1.358871E-06 -2.025622E-03  2.292527E-02 -2.259919E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.881600   54.678124   -0.489619   -0.042780   -0.846503  2451894.613653
# Heliocentric elements and errors
Epoch:              2451894.5000  =  2000/12/16
Mean Anomaly:          268.55537 +/-     0.000
Argument of Peri:      309.98700 +/-     0.000
Long of Asc Node:      207.75345 +/-     0.000
Inclination:             6.09073 +/-     0.000
Eccentricity:         0.09560401 +/-    0.0000
Semi-Major Axis:     43.97214367 +/-    0.0000
Time of Perihelion: 2478947.8204 +/-       0.0
Perihelion:          39.76823033 +/-    0.0000
Aphelion:            48.17605702 +/-    0.0000
Period (y)              291.5914 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.28258936 +/-    0.0000
Ecliptic Y           36.52518388 +/-    0.0000
Ecliptic Z           -2.19280117 +/-    0.0000
Ecliptic XDOT        -0.00223498 +/-    0.0000
Ecliptic YDOT         0.00123694 +/-    0.0000
Ecliptic ZDOT        -0.00022786 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.47597327 +/-    0.0000
Geocenter to KBO     43.62008779 +/-    0.0000
# Hcoef:  6.93

The following table shows the complete astrometric record for 182222. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (182222) followed by the observatory code and reference code for the source of the astrometry.

2000 12  16.11291  03 32 11.66   +16 08 31.2         182222    695  Cc4110      
2000 12  16.16070  03 32 11.46   +16 08 30.6   22.8R 182222    695  Cc4110      
2000 12  16.20000  03 32 11.33   +16 08 29.8   23.4R 182222    695  Cc4110      
2000 12  18.16722  03 32 03.48   +16 08 05.1         182222    695  Cc4110      
2001 09  21.35774  03 43 01.50   +16 41 38.0         182222    675  Ce6592      
2001 09  21.41648  03 43 01.37   +16 41 37.6   22.9R 182222    675  Ce6592      
2001 09  21.48993  03 43 01.22   +16 41 36.7   22.8R 182222    675  Ce6592      
2001 12  12.91008  03 37 29.37   +16 19 50.5   23.4R 182222    950  Ce6592      
2001 12  12.94988  03 37 29.19   +16 19 50.1   23.1R 182222    950  Ce6592      
2002 11  11.24701  03 45 03.37   +16 38 22.2         182222    695  Cg5722      
2002 11  11.29533  03 45 03.18   +16 38 21.6         182222    695  Cg5722      
2002 11  12.25777  03 44 58.61   +16 38 04.8   23.5R 182222    695  Cg5722      
2002 11  12.36332  03 44 58.12   +16 38 03.0   23.0R 182222    695  Cg5722      
2002 11  12.42035  03 44 57.84   +16 38 02.0   23.7R 182222    695  Cg5722      
2003 12  21.161521 03 47 08.19   +16 37 55.8   22.8V 182222    645  C~2FpP      
2003 12  21.162350 03 47 08.19   +16 37 55.6         182222    645  C~2FpP      
2003 12  21.164838 03 47 08.20   +16 37 55.7         182222    645  C~2FpP      
2005 10  27.47062  04 01 35.35   +17 09 05.6   23.0R 182222    568  Cp1834      
2005 10  27.56715  04 01 34.94   +17 09 04.1         182222    568  Cp1834      
2006 08  03.26284  04 07 57.22   +17 27 51.5   22.7R 182222    250  S~06I2      
2006 08  03.26724  04 07 57.23   +17 27 51.5         182222    250  S~06I2      
2006 08  03.27164  04 07 57.25   +17 27 51.5         182222    250  S~06I2      
2006 08  03.27604  04 07 57.26   +17 27 51.6         182222    250  S~06I2      
2007 09  17.45098  04 13 48.99   +17 32 34.3         182222    675  Cy6674      
2007 09  17.45512  04 13 48.94   +17 32 34.4         182222    675  Cy6674      
2007 09  17.45996  04 13 48.97   +17 32 34.3         182222    675  Cy6674      
2007 09  17.46446  04 13 48.98   +17 32 34.6         182222    675  Cy6674      
2007 09  18.47402  04 13 47.87   +17 32 25.7   23.5R 182222    675  Cy6674      
2016 02  04.17279  04 47 54.46   +17 54 32.2   22.8R 182222    G37  C~1meU      
2016 02  04.30393  04 47 54.13   +17 54 33.2         182222    G37  C~1meU      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00    -0.08       0.00     0.04
  2   0.0001      0.00    -0.19       0.00    -0.58
  3   0.0002      0.00     0.28       0.00    -0.86
  4   0.0056      0.00    -0.25       0.00     0.19
  5   0.7645      0.00     0.05       0.00     0.79
  6   0.7647      0.00    -0.07       0.00     1.05
  7   0.7649      0.00    -0.02       0.00     0.98
  8   0.9905      0.00     0.28       0.00     0.26
  9   0.9907      0.00     0.17       0.00     0.41
 10   1.9032      0.00    -0.22       0.00     0.02
 11   1.9033      0.00     0.39       0.00     0.24
 12   1.9059      0.00    -0.19       0.00    -0.06
 13   1.9062      0.00     0.05       0.00    -0.05
 14   1.9064      0.00    -0.05       0.00    -0.07
 15   3.0118      0.00     0.20       0.00    -0.18
 16   3.0118      0.00     0.25       0.00    -0.37
 17   3.0118      0.00     0.56       0.00    -0.24
 18   4.8634      0.00    -0.51       0.00     0.06
 19   4.8637      0.00    -0.50       0.00     0.05
 20   5.6294      0.00     0.24       0.00    -0.21
 21   5.6294      0.00     0.20       0.00    -0.22
 22   5.6295      0.00     0.30       0.00    -0.23
 23   5.6295      0.00     0.26       0.00    -0.14
 24   6.7525      0.00     0.03       0.00    -0.23
 25   6.7525      0.00    -0.65       0.00    -0.09
 26   6.7525      0.00    -0.12       0.00    -0.15
 27   6.7525      0.00     0.10       0.00     0.18
 28   6.7553      0.00    -0.30       0.00     0.04
 29  15.1350      0.00     0.54       0.00    -0.21
 30  15.1354      0.00    -0.39       0.00     0.65

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

182222    quality flag:2

Type:      CLASSICAL  SCATNEAR CLASSICAL

axisobj        43.948    43.948    43.948
ecceobj         0.094     0.094     0.094
incobj          6.089     6.089     6.089
qmin           38.643    38.673    38.720
qmax           49.277    49.235    49.103
amean          43.725    43.725    43.725
amin           43.313    43.313    43.313
amax           44.171    44.196    44.176
emean           0.098     0.097     0.096
emin            0.081     0.078     0.077
emax            0.116     0.114     0.112
imean           7.261     7.213     7.325
imin            6.425     6.361     6.552
imax            8.060     8.042     8.145
excite_mean     0.160     0.158     0.160
fracstop        1.000     1.000     1.000
cjmean          3.067     3.068     3.068

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       174.7     182.4     175.6
kozaiamp        180.0     179.9     180.0