Orbit Fit and Astrometric record for 15TQ408

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: 15TQ408   
# Created Tue Dec  7 02:13:41 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     34 observations of     34
# Arc:  19.08y
# First observation: 2002/09/05
#  Last observation: 2021/10/03
# Chi-squared of fit:   116.29 DOF:     62 RMS:  0.33
# Min/Max residuals:    -1.59    1.26
# Exact a, adot, b, bdot, g, gdot:
  1.905807E-05  4.580450E-02  5.390651E-06  1.162512E-02  3.585351E-02  3.681187E-04
# Covariance matrix:
  4.2744E-13  2.1932E-13 -5.8078E-15 -1.1151E-15  5.8770E-13  4.1021E-13
  2.1932E-13  5.5576E-13 -1.1457E-14 -1.3841E-15  7.2063E-13  1.0259E-12
 -5.8078E-15 -1.1457E-14  7.0086E-14 -4.6553E-14 -1.6005E-14 -2.3081E-14
 -1.1151E-15 -1.3841E-15 -4.6553E-14  4.4665E-14 -2.3348E-15 -2.5556E-15
  5.8770E-13  7.2063E-13 -1.6005E-14 -2.3348E-15  1.2226E-12  1.3266E-12
  4.1021E-13  1.0259E-12 -2.3081E-14 -2.5556E-15  1.3266E-12  2.1286E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.532778    1.490042    0.332431   -0.008923   -0.954023  2452522.818950
# Heliocentric elements and errors
Epoch:              2452522.5000  =  2002/09/05
Mean Anomaly:          359.20646 +/-     0.077
Argument of Peri:      359.33284 +/-     0.001
Long of Asc Node:        2.86761 +/-     0.001
Inclination:            14.25641 +/-     0.000
Eccentricity:         0.26777805 +/-    0.0001
Semi-Major Axis:     39.39368085 +/-    0.0000
Time of Perihelion: 2452721.5700 +/-      19.2
Perihelion:          28.84491772 +/-    0.0024
Aphelion:            49.94244398 +/-    0.0024
Period (y)              247.2567 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           28.84252615 +/-    0.0001
Ecliptic Y            0.42343908 +/-    0.0000
Ecliptic Z           -0.25917707 +/-    0.0000
Ecliptic XDOT        -0.00006226 +/-    0.0000
Ecliptic YDOT         0.00349467 +/-    0.0000
Ecliptic ZDOT         0.00088763 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   28.84680161 +/-    0.0001
Geocenter to KBO     27.89130353 +/-    0.0001
# Hcoef:  8.01

The following table shows the complete astrometric record for 15TQ408. 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 (15TQ408) followed by the observatory code and reference code for the source of the astrometry.

2002 09  05.318207 00 06 18.96   +00 06 13.7         15TQ408   645  C~4qVZ      
2002 09  05.319036 00 06 18.94   +00 06 13.6         15TQ408   645  C~4qVZ      
2002 09  05.321524 00 06 18.92   +00 06 13.7         15TQ408   645  C~4qVZ      
2002 10  11.318678 00 02 34.78   -00 13 46.1         15TQ408   645  C~4qVZ      
2002 10  11.319508 00 02 34.78   -00 13 46.4         15TQ408   645  C~4qVZ      
2002 10  11.321166 00 02 34.76   -00 13 46.1         15TQ408   645  C~4qVZ      
2002 10  11.321996 00 02 34.74   -00 13 46.5         15TQ408   645  C~4qVZ      
2002 10  30.204796 00 00 51.46   -00 22 33.8         15TQ408   645  C~4qVZ      
2002 10  30.205626 00 00 51.45   -00 22 33.5         15TQ408   645  C~4qVZ      
2002 10  30.208113 00 00 51.44   -00 22 33.9         15TQ408   645  C~4qVZ      
2003 11  19.138778 00 08 01.77   +01 09 36.2         15TQ408   645  C~4qVZ      
2003 11  19.139607 00 08 01.76   +01 09 35.9         15TQ408   645  C~4qVZ      
2003 11  19.141266 00 08 01.72   +01 09 36.0         15TQ408   645  C~4qVZ      
2003 11  19.142095 00 08 01.73   +01 09 35.9         15TQ408   645  C~4qVZ      
2003 11  22.235631 00 07 52.75   +01 08 57.5   22.3i 15TQ408   568  C~4qVZ      
2003 11  22.287947 00 07 52.58   +01 08 56.9   22.4i 15TQ408   568  C~4qVZ      
2003 11  22.337121 00 07 52.45   +01 08 56.4   22.4i 15TQ408   568  C~4qVZ      
2008 10  28.336089 00 52 23.82   +09 25 00.9   22.5r 15TQ408   645  C~4qVZ      
2008 10  28.336918 00 52 23.82   +09 25 00.9   22.5i 15TQ408   645  C~4qVZ      
2008 10  28.338577 00 52 23.81   +09 25 00.7   21.9z 15TQ408   645  C~4qVZ      
2008 10  28.339406 00 52 23.80   +09 25 00.9   23.2g 15TQ408   645  C~4qVZ      
2015 10  13.34554  01 56 05.533  +20 00 49.20  23.0r 15TQ408   568  C~3wqM      
2015 10  13.43644  01 56 04.930  +20 00 46.94  23.2r 15TQ408   568  C~3wqM      
2015 10  13.58273  01 56 03.937  +20 00 43.32  23.0r 15TQ408   568  C~3wqM      
2015 11  14.22145  01 52 35.556  +19 44 47.70        15TQ408   304  C~3wqM      
2015 11  15.11653  01 52 30.058  +19 44 17.82        15TQ408   304  C~3wqM      
2015 11  15.14350  01 52 29.850  +19 44 17.31        15TQ408   304  C~3wqM      
2015 12  09.16785  01 50 24.901  +19 31 39.67        15TQ408   304  C~3wqM      
2015 12  09.19141  01 50 24.804  +19 31 38.88        15TQ408   304  C~3wqM      
2018 10  16.208802 02 23 05.79   +23 52 37.2   22.0z 15TQ408   W84  C~4qVZ      
2018 10  16.276649 02 23 05.36   +23 52 35.8   22.8r 15TQ408   W84  C~4qVZ      
2021 10  03.405430 02 52 13.050  +27 20 51.28  22.6G 15TQ408   G37  C~55X7      
2021 10  03.437860 02 52 13.007  +27 20 49.81        15TQ408   G37  C~55X7      
2021 10  03.470410 02 52 12.831  +27 20 49.40        15TQ408   G37  C~55X7      

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     0.24       0.00     0.04
     2   0.0000      0.00     0.01       0.00    -0.03
     3   0.0000      0.00    -0.06       0.00     0.15
     4   0.0986      0.00    -0.02       0.00     0.08
     5   0.0986      0.00     0.05       0.00    -0.19
     6   0.0986      0.00    -0.09       0.00     0.16
     7   0.0986      0.00    -0.32       0.00    -0.21
     8   0.1503      0.00     0.06       0.00     0.09
     9   0.1503      0.00    -0.03       0.00     0.41
    10   0.1503      0.00     0.01       0.00     0.07
    11   1.2042      0.00     0.12       0.00     0.21
    12   1.2042      0.00     0.01       0.00    -0.08
    13   1.2042      0.00    -0.51       0.00     0.05
    14   1.2042      0.00    -0.32       0.00    -0.04
    15   1.2126      0.00     0.28       0.00    -0.03
    16   1.2128      0.00    -0.02       0.00    -0.04
    17   1.2129      0.00     0.13       0.00     0.01
    18   6.1465      0.00     0.12       0.00    -0.17
    19   6.1465      0.00     0.19       0.00    -0.14
    20   6.1465      0.00     0.19       0.00    -0.29
    21   6.1465      0.00     0.12       0.00    -0.06
    22  13.1034      0.00    -0.02       0.00    -0.12
    23  13.1037      0.00     0.05       0.00    -0.13
    24  13.1041      0.00    -0.17       0.00    -0.06
    25  13.1907      0.00     0.46       0.00    -0.02
    26  13.1932      0.00     0.22       0.00    -0.37
    27  13.1932      0.00    -0.38       0.00     0.01
    28  13.2590      0.00    -0.12       0.00     0.33
    29  13.2591      0.00    -0.10       0.00     0.23
    30  16.1120      0.00     0.12       0.00    -0.26
    31  16.1121      0.00     0.48       0.00    -0.29
    32  19.0776      0.00    -1.59       0.00     1.26
    33  19.0777      0.00     0.46       0.00    -0.06
    34  19.0778      0.00     0.53       0.00    -0.30

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.

15TQ408    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.777    39.777    39.777
ecceobj         0.275     0.275     0.275
incobj         14.216    14.216    14.216
qmin           27.276    27.276    27.276
qmax           52.308    52.308    52.308
amean          39.454    39.454    39.454
amin           38.997    38.997    38.997
amax           40.019    40.018    40.019
emean           0.280     0.280     0.280
emin            0.253     0.253     0.253
emax            0.308     0.308     0.308
imean          13.621    13.621    13.621
imin           12.092    12.092    12.092
imax           15.119    15.118    15.119
excite_mean     0.366     0.366     0.366
fracstop        1.000     1.000     1.000
cjmean          2.899     2.899     2.899

libcent 0       179.5     179.5     179.5
libamp  0        82.1      82.1      82.1
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       167.9     167.8     167.9
kozaiamp        180.0     180.0     180.0