Orbit Fit and Astrometric record for 97SZ10

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: 97SZ10    
# Created Fri Oct 20 01:36:58 2017
# Orbit generated from Bernstein formalism
# Fitting   28 observations of   29
# Arc:  11.13y
# First observation: 1997/09/07
#  Last observation: 2008/10/24
Preliminary a, adot, b, bdot, g, gdot:
  -0.002796   0.041974  -0.000049   0.008711   0.027654   0.000000
# Chi-squared of fit:   119.44 DOF:   50 RMS:  0.37
# Min/Max residuals:    -1.18    0.64
# Exact a, adot, b, bdot, g, gdot:
  1.872323E-05  4.225873E-02  2.371823E-06  8.820110E-03  3.313294E-02  4.910431E-03
# Covariance matrix:
  2.6070E-13 -1.2273E-13  1.9537E-14 -2.2664E-14  1.5606E-13 -2.3635E-13
 -1.2273E-13  1.0798E-13 -1.8683E-14  2.1946E-14 -4.9461E-14  2.2576E-13
  1.9537E-14 -1.8683E-14  9.7531E-14 -1.4617E-14  8.0121E-15 -4.0116E-14
 -2.2664E-14  2.1946E-14 -1.4617E-14  7.3504E-15 -8.7867E-15  4.7147E-14
  1.5606E-13 -4.9461E-14  8.0121E-15 -8.7867E-15  2.4961E-13 -9.7392E-14
 -2.3635E-13  2.2576E-13 -4.0116E-14  4.7147E-14 -9.7392E-14  4.8474E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.626712   13.227074    0.472275    0.009438   -0.880554  2450698.947291
# Heliocentric elements and errors
Epoch:              2450690.5000  =  1997/08/30
Mean Anomaly:            9.16999 +/-     0.002
Argument of Peri:      341.70544 +/-     0.003
Long of Asc Node:        9.42307 +/-     0.000
Inclination:            11.77282 +/-     0.000
Eccentricity:         0.37042490 +/-    0.0001
Semi-Major Axis:     48.44429467 +/-    0.0062
Time of Perihelion: 2447553.3957 +/-       0.4
Perihelion:          30.49932187 +/-    0.0052
Aphelion:            66.38926748 +/-    0.0091
Period (y)              337.1880 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.35169579 +/-    0.0004
Ecliptic Y            6.64328130 +/-    0.0001
Ecliptic Z            0.33020620 +/-    0.0000
Ecliptic XDOT        -0.00040738 +/-    0.0000
Ecliptic YDOT         0.00349789 +/-    0.0000
Ecliptic ZDOT         0.00073308 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.07197548 +/-    0.0004
Geocenter to KBO     30.18144439 +/-    0.0005
# Hcoef:  8.56

The following table shows the complete astrometric record for 97SZ10. 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 (97SZ10) followed by the observatory code and reference code for the source of the astrometry.

1997 09  07.44656  00 47 41.90   +05 47 57.8   23.0R 97SZ10    675  Ca0035      
1997 09  07.46976  00 47 41.78   +05 47 57.3   23.1R 97SZ10    675  Ca0035      
1997 09  24.43753  00 46 08.92   +05 39 50.7         97SZ10    568  Ca0035      
1997 09  24.51529  00 46 08.55   +05 39 48.5         97SZ10    568  Ca0035      
1997 09  27.34124  00 45 52.03   +05 38 18.8         97SZ10    696  Ca0035      
1997 09  27.43969  00 45 51.43   +05 38 16.1   23.0R 97SZ10    696  Ca0035      
1997 10  27.20396  00 42 59.39   +05 22 43.6         97SZ10    675  Ca0404      
1997 10  27.23100  00 42 59.23   +05 22 42.7         97SZ10    675  Ca0404      
1997 10  27.23811  00 42 59.21   +05 22 42.7         97SZ10    675  Ca0404      
1998 10  16.33632  00 52 14.07   +06 52 52.4         97SZ10    568  Ca3333      
1998 10  16.39944  00 52 13.67   +06 52 50.6         97SZ10    568  Ca3333      
1998 10  16.42354  00 52 13.52   +06 52 50.1         97SZ10    568  Ca3333      
1998 10  16.45345  00 52 13.38   +06 52 48.7         97SZ10    568  Ca3333      
1998 10  16.51749  00 52 12.96   +06 52 46.7   22.9R 97SZ10    568  Ca3333      
1998 12  12.84052  00 48 18.21   +06 31 45.7         97SZ10    950  Ca3333      
1998 12  14.82509  00 48 15.69   +06 31 35.0         97SZ10    950  Ca3333      
2000 08  07.33685  01 13 50.00   +10 01 19.0   23.5R 97SZ10    809  Cc2106      
2000 08  07.39804  01 13 49.88   +10 01 19.2   23.2R 97SZ10    809  Cc2106      
2000 08  07.41861  01 13 49.84   +10 01 19.0   23.7R 97SZ10    809  Cc2106      
2000 09  24.39173  01 10 39.64   +09 48 32.0         97SZ10    568  Cb8918      
2000 09  24.41127  01 10 39.54   +09 48 32.1         97SZ10    568  Cb8918      
2007 07  07.23087  02 07 58.36   +18 13 49.4   23.7R 97SZ10    250  S~06AJ      
2007 07  07.23712  02 07 58.39   +18 13 49.6         97SZ10    250  S~06AJ      
2007 07  07.24337  02 07 58.41   +18 13 49.8         97SZ10    250  S~06AJ      
2007 07  07.29753  02 07 58.60   +18 13 51.5         97SZ10    250  S~06AJ      
2008 10  23.38932  02 11 58.93   +19 20 32.2   23.6r 97SZ10    695  C~0gLr      
2008 10  23.44557  02 11 58.61   +19 20 30.8   23.6r 97SZ10    695  C~0gLr      
2008 10  24.34441  02 11 53.17   +19 20 08.2   23.3r 97SZ10    695  C~0gLr      
2008 10  24.44969  02 11 52.53   +19 20 05.4   23.7r 97SZ10    695  C~0gLr      

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     0.30       0.00     0.38
  2   0.0001     -1.84     0.33       0.24     0.47
  3   0.0465  -1467.88     0.10      91.94     0.36
  4   0.0467  -1473.82 (   1.40)     92.06 (   0.03)
  5   0.0545  -1735.89    -0.20     105.61    -1.08
  6   0.0547  -1745.19    -0.25     106.61    -0.63
  7   0.1362  -4474.73    -0.17     251.29     0.59
  8   0.1363  -4477.28    -0.38     251.40     0.56
  9   0.1363  -4477.56    -0.04     251.51     0.64
 10   1.1058   5252.58     0.13    2014.32    -0.39
 11   1.1060   5246.38    -0.12    2014.96    -0.07
 12   1.1060   5244.13    -0.11    2015.37     0.21
 13   1.1061   5241.66     0.24    2014.88    -0.42
 14   1.1063   5235.12    -0.30    2015.46    -0.17
 15   1.2632   1521.40     0.10    2210.26     0.33
 16   1.2687   1482.64     0.60    2215.01     0.14
 17   2.9155  27502.67    -0.12    5163.79    -0.04
 18   2.9157  27501.07    -0.11    5164.64     0.27
 19   2.9157  27500.44    -0.20    5164.68     0.12
 20   3.0471  24561.25    -0.14    5507.85    -1.18
 21   3.0471  24559.90     0.27    5508.50    -0.65
 22   9.8283  86679.93     0.10   17234.71     0.31
 23   9.8283  86680.48     0.22   17234.77     0.28
 24   9.8283  86680.88     0.19   17234.89     0.29
 25   9.8285  86684.56     0.13   17235.75     0.31
 26  11.1265  92107.99    -0.32   20309.60    -0.11
 27  11.1266  92102.28     0.08   20309.59    -0.20
 28  11.1291  92005.80    -0.17   20310.65    -0.07
 29  11.1294  91994.39    -0.12   20310.63    -0.21

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.

97SZ10    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.522    48.541    48.504
ecceobj         0.371     0.371     0.370
incobj         11.772    11.772    11.772
qmin           29.509    29.615    29.889
qmax           66.947    67.260    66.814
amean          47.797    47.797    47.796
amin           47.200    47.128    47.158
amax           48.566    48.629    48.604
emean           0.342     0.336     0.344
emin            0.293     0.280     0.307
emax            0.382     0.383     0.375
imean          13.856    14.375    13.827
imin           10.935    11.266    11.747
imax           17.093    17.863    16.118
excite_mean     0.420     0.420     0.420
fracstop        1.000     1.000     1.000
cjmean          2.926     2.926     2.926

libcent 0        75.3      75.8      75.1
libamp  0        37.2      41.2      38.9
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       325.5     281.7     329.2
kozaiamp         37.6     180.0      33.1