Orbit Fit and Astrometric record for 14QW510

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: 14QW510   
# Created Fri Dec  3 02:12:33 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     47 observations of     47
# Arc:   6.08y
# First observation: 2014/08/19
#  Last observation: 2020/09/17
# Chi-squared of fit:    14.70 DOF:     88 RMS:  0.10
# Min/Max residuals:    -0.25    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.988567E-05  3.599093E-02 -5.316593E-06 -9.584125E-03  2.916775E-02 -1.951710E-02
# Covariance matrix:
  2.2333E-13 -5.4222E-14 -1.6937E-15  8.6022E-15  1.0436E-13 -9.5951E-14
 -5.4222E-14  5.5611E-14  1.3622E-14 -1.4825E-14  1.1340E-14  2.0071E-13
 -1.6937E-15  1.3622E-14  7.2577E-14 -2.0764E-14  1.1085E-14  6.0030E-14
  8.6022E-15 -1.4825E-14 -2.0764E-14  1.1249E-14 -5.9946E-15 -6.2162E-14
  1.0436E-13  1.1340E-14  1.1085E-14 -5.9946E-15  1.0420E-13  9.9577E-14
 -9.5951E-14  2.0071E-13  6.0030E-14 -6.2162E-14  9.9577E-14  8.5121E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -21.658115   22.699013    0.847119   -0.206085   -0.519327  2456888.863398
# Heliocentric elements and errors
Epoch:              2456888.5000  =  2014/08/19
Mean Anomaly:          357.53772 +/-     0.002
Argument of Peri:      298.51987 +/-     0.002
Long of Asc Node:      148.58498 +/-     0.000
Inclination:            26.14965 +/-     0.000
Eccentricity:         0.87633326 +/-    0.0001
Semi-Major Axis:    209.80205485 +/-    0.0940
Time of Perihelion: 2464480.3692 +/-     740.7
Perihelion:          25.94553633 +/-    0.0163
Aphelion:           393.65857336 +/-    0.1767
Period (y)             3038.9448 +/-      2.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.23578663 +/-    0.0003
Ecliptic Y           11.73222854 +/-    0.0001
Ecliptic Z          -12.65344889 +/-    0.0001
Ecliptic XDOT        -0.00318562 +/-    0.0000
Ecliptic YDOT         0.00232719 +/-    0.0000
Ecliptic ZDOT        -0.00015986 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.81356310 +/-    0.0003
Geocenter to KBO     34.28483643 +/-    0.0004
# Hcoef:  7.41

The following table shows the complete astrometric record for 14QW510. 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 (14QW510) followed by the observatory code and reference code for the source of the astrometry.

2014 08  19.36262  01 56 07.186  -11 18 01.03  23.0r 14QW510   W84  C~4yU1      
2014 08  19.36262  01 56 07.19   -11 18 01.0   23.1r 14QW510   W84  C~3cnQ      
2014 10  03.28889  01 53 36.460  -11 54 12.92  22.6i 14QW510   W84  C~4yU1      
2014 10  03.28889  01 53 36.46   -11 54 12.9   22.7i 14QW510   W84  C~3cnQ      
2014 11  21.22719  01 49 27.930  -12 16 09.11  23.7g 14QW510   W84  C~4yU1      
2014 11  21.22719  01 49 27.93   -12 16 09.1   23.7g 14QW510   W84  C~3cnQ      
2014 12  12.16843  01 48 10.569  -12 14 56.00  22.4i 14QW510   W84  C~4yU1      
2014 12  12.16843  01 48 10.57   -12 14 56.0   22.4i 14QW510   W84  C~3cnQ      
2014 12  20.14518  01 47 51.083  -12 12 40.74  23.9g 14QW510   W84  C~4yU1      
2014 12  20.14518  01 47 51.08   -12 12 40.7   23.9g 14QW510   W84  C~3cnQ      
2014 12  23.07137  01 47 45.541  -12 11 37.32  22.4i 14QW510   W84  C~4yU1      
2014 12  23.07137  01 47 45.54   -12 11 37.3   22.6i 14QW510   W84  C~3cnQ      
2015 09  23.25643  02 03 17.219  -11 30 32.71  22.8z 14QW510   W84  C~4yU1      
2015 10  22.21523  02 00 53.368  -11 50 52.24  22.0z 14QW510   W84  C~4yU1      
2015 11  02.14981  01 59 54.337  -11 56 13.75  22.9r 14QW510   W84  C~4yU1      
2015 11  02.14981  01 59 54.34   -11 56 13.8   22.9r 14QW510   W84  C~3cnQ      
2015 11  02.15118  01 59 54.332  -11 56 13.68  22.9g 14QW510   W84  C~4yU1      
2015 11  14.19169  01 58 51.488  -12 00 11.09  22.4i 14QW510   W84  C~4yU1      
2015 11  14.19169  01 58 51.49   -12 00 11.1   22.6i 14QW510   W84  C~3cnQ      
2015 11  14.19307  01 58 51.478  -12 00 11.24  22.8r 14QW510   W84  C~4yU1      
2015 11  14.19307  01 58 51.48   -12 00 11.2   22.8r 14QW510   W84  C~3cnQ      
2015 11  14.19444  01 58 51.479  -12 00 11.20  22.9g 14QW510   W84  C~4yU1      
2015 11  14.19444  01 58 51.48   -12 00 11.2   23.1g 14QW510   W84  C~3cnQ      
2015 11  18.13277  01 58 32.055  -12 01 00.22  22.8z 14QW510   W84  C~4yU1      
2016 09  08.30635  02 13 22.33   -11 00 52.2   22.8r 14QW510   W84  C~3cnQ      
2016 09  08.30772  02 13 22.332  -11 00 52.22  22.2i 14QW510   W84  C~4yU1      
2016 09  08.30772  02 13 22.33   -11 00 52.2   22.4i 14QW510   W84  C~3cnQ      
2016 09  08.30910  02 13 22.324  -11 00 52.31  22.9g 14QW510   W84  C~4yU1      
2016 09  08.30910  02 13 22.33   -11 00 52.3   23.4g 14QW510   W84  C~3cnQ      
2017 01  30.04193  02 05 24.943  -11 16 55.04  22.4i 14QW510   W84  C~4yU1      
2017 01  30.04193  02 05 24.94   -11 16 55.0   22.4i 14QW510   W84  C~3cnQ      
2017 09  14.39182  02 22 37.467  -10 46 18.96  22.6z 14QW510   W84  C~4yU1      
2017 10  03.26632  02 21 19.704  -11 02 09.71  22.0z 14QW510   W84  C~4yU1      
2017 10  18.28806  02 20 02.212  -11 12 59.47  22.5r 14QW510   W84  C~4yU1      
2017 10  18.28944  02 20 02.203  -11 12 59.38  23.4g 14QW510   W84  C~4yU1      
2017 12  23.14361  02 14 49.920  -11 23 16.09  22.5r 14QW510   W84  C~4yU1      
2017 12  23.14499  02 14 49.917  -11 23 16.03  22.5i 14QW510   W84  C~4yU1      
2017 12  23.14636  02 14 49.916  -11 23 16.01  23.2g 14QW510   W84  C~4yU1      
2018 10  19.31799  02 29 56.684  -10 52 36.52  22.6r 14QW510   W84  C~4yU1      
2018 10  20.24869  02 29 51.566  -10 53 12.90  21.8z 14QW510   W84  C~4yU1      
2020 09  16.54498  02 53 26.434  -09 37 19.34  22.2w 14QW510   F51  C~48E1      
2020 09  16.56330  02 53 26.391  -09 37 20.23  22.3w 14QW510   F51  C~48E1      
2020 09  16.58194  02 53 26.324  -09 37 21.61  22.4w 14QW510   F51  C~48E1      
2020 09  17.53919  02 53 23.444  -09 38 13.78  22.3w 14QW510   F51  C~48E1      
2020 09  17.55853  02 53 23.374  -09 38 15.01  22.4w 14QW510   F51  C~48E1      
2020 09  17.57799  02 53 23.308  -09 38 16.03  22.2w 14QW510   F51  C~48E1      
2020 09  17.59739  02 53 23.255  -09 38 17.20  22.4w 14QW510   F51  C~48E1      

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    -0.01
     2   0.0000      0.00    -0.02       0.00     0.02
     3   0.1230      0.00    -0.12       0.00    -0.09
     4   0.1230      0.00    -0.12       0.00    -0.07
     5   0.2570      0.00     0.00       0.00     0.02
     6   0.2570      0.00     0.00       0.00     0.01
     7   0.3143      0.00     0.01       0.00    -0.07
     8   0.3143      0.00     0.02       0.00    -0.07
     9   0.3362      0.00    -0.02       0.00     0.12
    10   0.3362      0.00     0.03       0.00     0.08
    11   0.3442      0.00    -0.05       0.00    -0.23
    12   0.3442      0.00    -0.03       0.00    -0.25
    13   1.0948      0.00     0.21       0.00    -0.01
    14   1.1741      0.00     0.16       0.00     0.19
    15   1.2041      0.00     0.05       0.00     0.03
    16   1.2041      0.00     0.10       0.00    -0.02
    17   1.2041      0.00     0.09       0.00     0.13
    18   1.2370      0.00     0.04       0.00     0.17
    19   1.2370      0.00     0.01       0.00     0.18
    20   1.2370      0.00    -0.00       0.00     0.08
    21   1.2370      0.00    -0.03       0.00     0.04
    22   1.2370      0.00     0.10       0.00     0.10
    23   1.2370      0.00     0.09       0.00     0.10
    24   1.2478      0.00     0.00       0.00    -0.13
    25   2.0560      0.00    -0.07       0.00    -0.09
    26   2.0560      0.00    -0.01       0.00    -0.02
    27   2.0560      0.00     0.02       0.00    -0.04
    28   2.0560      0.00     0.06       0.00    -0.05
    29   2.0560      0.00    -0.03       0.00    -0.06
    30   2.4495      0.00    -0.07       0.00    -0.06
    31   2.4495      0.00    -0.02       0.00    -0.10
    32   3.0719      0.00     0.26       0.00     0.22
    33   3.1236      0.00    -0.05       0.00    -0.01
    34   3.1648      0.00    -0.15       0.00    -0.02
    35   3.1648      0.00    -0.17       0.00     0.12
    36   3.3451      0.00    -0.02       0.00    -0.03
    37   3.3451      0.00    -0.01       0.00    -0.00
    38   3.3451      0.00     0.02       0.00    -0.01
    39   4.1669      0.00    -0.13       0.00     0.03
    40   4.1694      0.00     0.04       0.00     0.12
    41   6.0785      0.00    -0.07       0.00     0.07
    42   6.0786      0.00     0.14       0.00     0.18
    43   6.0786      0.00    -0.01       0.00    -0.17
    44   6.0813      0.00     0.10       0.00     0.06
    45   6.0813      0.00    -0.02       0.00    -0.11
    46   6.0814      0.00    -0.08       0.00    -0.07
    47   6.0814      0.00     0.05       0.00    -0.18

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.

14QW510    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj       217.105   217.092   217.117
ecceobj         0.880     0.880     0.880
incobj         26.092    26.092    26.092
qmin           24.567    24.578    24.563
qmax          449.169   429.149   411.545
amean         198.876   201.295   191.870
amin          174.864   181.825   172.721
amax          237.683   227.624   218.856
emean           0.867     0.869     0.863
emin            0.846     0.849     0.843
emax            0.890     0.886     0.883
imean          25.625    25.647    25.635
imin           24.610    24.632    24.633
imax           26.805    26.802    26.605
excite_mean     0.969     0.971     0.965
fracstop        0.307     0.328     0.270
cjmean          2.456     2.455     2.457

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       307.2     308.6     307.3
kozaiamp          9.9      10.5       9.5