Orbit Fit and Astrometric record for 17SN132

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: 17SN132   
# Created Tue Nov 30 02:14:05 2021
# Orbit generated from Bernstein formalism
# Fitting     14 observations of     15
# Arc:   2.28y
# First observation: 2017/09/16
#  Last observation: 2019/12/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.007495   0.000001   0.000020   0.012421   0.000000
# Chi-squared of fit:    13.10 DOF:     22 RMS:  0.17
# Min/Max residuals:    -0.41    0.30
# Exact a, adot, b, bdot, g, gdot:
  9.906759E-06  7.463797E-03 -8.986865E-08  1.704816E-05  1.239625E-02  5.594519E-03
# Covariance matrix:
  6.9608E-13  1.2032E-13  7.1313E-14 -4.8491E-15  5.9221E-13 -1.4741E-11
  1.2032E-13  3.3113E-13  4.8507E-14 -2.6061E-15  3.9428E-13 -1.1542E-11
  7.1313E-14  4.8507E-14  2.9648E-13 -1.5745E-13  8.1342E-14 -7.8572E-12
 -4.8491E-15 -2.6061E-15 -1.5745E-13  1.4773E-13 -5.7100E-14 -1.2539E-11
  5.9221E-13  3.9428E-13  8.1342E-14 -5.7100E-14  1.3117E-12  9.6034E-11
 -1.4741E-11 -1.1542E-11 -7.8572E-12 -1.2539E-11  9.6034E-11  3.0233E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
  -24.375654   47.879892    0.813956   -0.244630   -0.540208  2458013.055381
# Heliocentric elements and errors
Epoch:              2458010.5000  =  2017/09/14
Mean Anomaly:           41.38107 +/-     2.051
Argument of Peri:      155.07522 +/-     0.690
Long of Asc Node:      137.91148 +/-     0.013
Inclination:            24.20477 +/-     0.000
Eccentricity:         0.60664104 +/-    0.0158
Semi-Major Axis:     96.39362100 +/-    2.9549
Time of Perihelion: 2418275.7886 +/-     734.7
Perihelion:          37.91729469 +/-    1.9178
Aphelion:           154.86994731 +/-    4.9865
Period (y)              946.4129 +/-     43.52
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           50.27963858 +/-    0.0046
Ecliptic Y           54.39098036 +/-    0.0050
Ecliptic Z          -33.29373314 +/-    0.0031
Ecliptic XDOT        -0.00046189 +/-    0.0000
Ecliptic YDOT         0.00193593 +/-    0.0000
Ecliptic ZDOT        -0.00050664 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   81.20894943 +/-    0.0046
Geocenter to KBO     80.66955347 +/-    0.0075
# Hcoef:  5.80

The following table shows the complete astrometric record for 17SN132. 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 (17SN132) followed by the observatory code and reference code for the source of the astrometry.

2017 09  16.55458  03 28 18.072  -06 18 37.33  24.9r 17SN132   568  C~2yfy      
2017 09  17.55671  03 28 16.889  -06 18 57.13  24.8r 17SN132   568  C~2yfy      
2017 11  21.19792  03 25 56.831  -06 35 22.47  24.9r 17SN132   304  C~2yfy      
2017 11  22.23278  03 25 54.133  -06 35 29.32  24.9r 17SN132   304  C~2yfy      
2017 12  14.08489  03 24 59.980  -06 36 25.28        17SN132   304  C~2yfy      
2017 12  14.14427  03 24 59.813  -06 36 25.77        17SN132   304  C~2yfy      
2018 12  03.03240  03 27 06.751  -06 29 20.66  24.7r 17SN132   304  C~2yfy      
2018 12  03.06978  03 27 06.648  -06 29 20.42        17SN132   304  C~2yfy      
2018 12  03.10402  03 27 06.566  -06 29 20.35  24.8r 17SN132   304  C~2yfy      
2018 12  04.02674  03 27 04.298  -06 29 23.34        17SN132   304  C~2yfy      
2018 12  04.03408  03 27 04.264  -06 29 23.21        17SN132   304  C~2yfy      
2019 12  27.11710  03 27 51.921  -06 21 46.96        17SN132   304  C~3qTq      
2019 12  27.16214  03 27 51.830  -06 21 46.80        17SN132   304  C~3qTq      
2019 12  27.20758  03 27 51.731  -06 21 46.55        17SN132   304  C~3qTq      
2019 12  28.10618  03 27 50.045  -06 21 40.78        17SN132   304  C~3qTq      

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     0.02
     2   0.0027    -22.30    -0.11     -14.34     0.11
     3   0.1797  -2297.61     0.13    -404.53    -0.08
     4   0.1826  -2338.18     0.30    -400.39     0.02
     5   0.2424  -3130.87 (   0.22)   -238.81 (   0.60)
     6   0.2425  -3133.40    -0.36    -238.62     0.16
     7   1.2114  -1196.73    -0.05    -334.71    -0.25
     8   1.2115  -1198.14    -0.08    -334.07     0.12
     9   1.2116  -1199.30     0.03    -333.67     0.26
    10   1.2142  -1232.67     0.26    -327.50    -0.41
    11   1.2142  -1233.13     0.07    -327.24    -0.20
    12   2.2767   -426.45     0.03     -78.07     0.07
    13   2.2768   -427.72    -0.04     -77.55    -0.02
    14   2.2769   -429.07    -0.20     -76.92     0.00
    15   2.2794   -451.74     0.10     -64.62     0.19

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.

17SN132    quality flag:1

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        98.414   108.811    90.507
ecceobj         0.607     0.655     0.561
incobj         24.197    24.197    24.197
qmin           37.293    35.512    37.804
qmax          161.317   184.424   144.474
amean          97.197   107.160    89.500
amin           95.612   105.114    88.081
amax           99.773   110.529    91.586
emean           0.606     0.655     0.562
emin            0.598     0.643     0.550
emax            0.617     0.669     0.578
imean          22.844    22.449    22.607
imin           22.618    21.737    21.871
imax           23.094    23.355    23.327
excite_mean     0.720     0.758     0.681
fracstop        1.000     1.000     1.000
cjmean          2.943     2.915     2.968

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       210.1     230.7     246.4
kozaiamp         56.0      74.1      93.9