Orbit Fit and Astrometric record for 14QT495

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: 14QT495   
# Created Sat Dec  4 02:12:37 2021
# Orbit generated from Bernstein formalism
# Fitting     45 observations of     45
# Arc:   4.26y
# First observation: 2014/08/22
#  Last observation: 2018/11/26
Preliminary a, adot, b, bdot, g, gdot:
   0.000087   0.046772  -0.000068  -0.004179   0.033816   0.000000
# Chi-squared of fit:    11.61 DOF:     84 RMS:  0.09
# Min/Max residuals:    -0.23    0.33
# Exact a, adot, b, bdot, g, gdot:
  2.227672E-05  4.688885E-02 -1.567349E-06 -4.167642E-03  3.387972E-02  2.336270E-03
# Covariance matrix:
  2.1513E-13 -5.7543E-14 -1.4163E-14  6.9136E-15  1.1426E-13 -2.3330E-13
 -5.7543E-14  1.7336E-13  1.3562E-15 -1.3717E-14  8.2495E-14  1.0854E-12
 -1.4163E-14  1.3562E-15  9.4342E-14 -3.9339E-14 -1.3791E-14  2.0975E-14
  6.9136E-15 -1.3717E-14 -3.9339E-14  2.6394E-14 -2.2532E-15 -1.0438E-13
  1.1426E-13  8.2495E-14 -1.3791E-14 -2.2532E-15  1.7557E-13  5.0451E-13
 -2.3330E-13  1.0854E-12  2.0975E-14 -1.0438E-13  5.0451E-13  8.0111E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -45.426910    6.488434    0.617531   -0.573014   -0.564722  2456891.854328
# Heliocentric elements and errors
Epoch:              2456890.5000  =  2014/08/21
Mean Anomaly:            1.49242 +/-     0.003
Argument of Peri:      258.81709 +/-     0.011
Long of Asc Node:      103.87500 +/-     0.000
Inclination:            44.68334 +/-     0.000
Eccentricity:         0.47297205 +/-    0.0000
Semi-Major Axis:     57.03307227 +/-    0.0058
Time of Perihelion: 2456238.3065 +/-       1.4
Perihelion:          30.05802291 +/-    0.0042
Aphelion:            84.00812164 +/-    0.0091
Period (y)              430.7233 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           21.44910225 +/-    0.0003
Ecliptic Y            1.82032510 +/-    0.0000
Ecliptic Z          -21.02606018 +/-    0.0003
Ecliptic XDOT        -0.00053978 +/-    0.0000
Ecliptic YDOT         0.00374840 +/-    0.0000
Ecliptic ZDOT        -0.00037074 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.09107471 +/-    0.0003
Geocenter to KBO     29.51617832 +/-    0.0004
# Hcoef:  8.51

The following table shows the complete astrometric record for 14QT495. 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 (14QT495) followed by the observatory code and reference code for the source of the astrometry.

2014 08  22.35355  01 48 12.802  -38 27 51.47  23.2r 14QT495   W84  C~4yTz      
2014 08  22.35355  01 48 12.80   -38 27 51.5   23.2r 14QT495   W84  C~3cnP      
2014 08  22.35493  01 48 12.800  -38 27 51.44  22.9i 14QT495   W84  C~4yTz      
2014 08  22.35493  01 48 12.80   -38 27 51.4   23.0i 14QT495   W84  C~3cnP      
2014 10  20.26021  01 42 24.466  -39 22 11.89  24.0g 14QT495   W84  C~4yTz      
2014 10  20.26021  01 42 24.48   -39 22 11.9   24.5g 14QT495   W84  C~3cnP      
2014 10  20.26157  01 42 24.483  -39 22 12.00  22.7i 14QT495   W84  C~4yTz      
2014 10  20.26157  01 42 24.47   -39 22 12.0   23.1i 14QT495   W84  C~3cnP      
2014 11  27.15536  01 38 02.208  -39 12 57.07  22.8r 14QT495   W84  C~4yTz      
2014 11  27.15536  01 38 02.24   -39 12 57.0   22.7r 14QT495   W84  C~3cnP      
2014 12  11.15412  01 36 57.380  -38 59 51.10  23.4z 14QT495   W84  C~4yTz      
2015 01  24.07208  01 36 41.996  -37 55 45.82  23.3r 14QT495   W84  C~4yTz      
2015 01  24.07208  01 36 42.00   -37 55 45.8   23.4r 14QT495   W84  C~3cnP      
2015 09  26.359919 01 57 48.59   -37 57 32.8   23.0z 14QT495   W84  C~352Q      
2015 11  06.29854  01 52 49.990  -38 15 03.11  22.6i 14QT495   W84  C~4yTz      
2015 11  06.29854  01 52 49.99   -38 15 03.1   22.9i 14QT495   W84  C~3cnP      
2015 11  06.299387 01 52 49.98   -38 15 03.1   24.9r 14QT495   W84  C~352Q      
2015 11  06.29991  01 52 49.981  -38 15 03.18  23.8r 14QT495   W84  C~4yTz      
2015 11  07.29086  01 52 42.751  -38 14 55.22  23.4i 14QT495   W84  C~4yTz      
2015 11  07.29086  01 52 42.75   -38 14 55.2   23.3i 14QT495   W84  C~3cnP      
2015 11  07.29223  01 52 42.750  -38 14 55.21  23.3r 14QT495   W84  C~4yTz      
2015 11  07.29223  01 52 42.75   -38 14 55.2   23.5r 14QT495   W84  C~3cnP      
2015 11  07.29358  01 52 42.729  -38 14 55.17  23.8g 14QT495   W84  C~4yTz      
2015 11  07.29358  01 52 42.73   -38 14 55.2   24.2g 14QT495   W84  C~3cnP      
2015 11  07.29496  01 52 42.718  -38 14 55.19  24.5g 14QT495   W84  C~4yTz      
2016 09  09.17937  02 11 15.135  -36 25 04.30  23.0i 14QT495   W84  C~4yTz      
2016 09  09.17937  02 11 15.13   -36 25 04.3   23.0i 14QT495   W84  C~3cnP      
2016 10  07.09603  02 08 32.909  -36 52 24.92  23.2i 14QT495   W84  C~4yTz      
2016 10  29.30532  02 05 49.258  -37 02 08.75  23.1r 14QT495   W84  C~4yTz      
2016 10  29.30532  02 05 49.26   -37 02 08.7   23.2r 14QT495   W84  C~3cnP      
2016 10  29.30670  02 05 49.267  -37 02 08.97  22.4i 14QT495   W84  C~4yTz      
2016 10  29.30670  02 05 49.26   -37 02 08.9   22.7i 14QT495   W84  C~3cnP      
2016 12  02.10052  02 01 59.827  -36 51 15.60  23.3r 14QT495   W84  C~4yTz      
2016 12  02.10052  02 01 59.83   -36 51 15.6   23.6r 14QT495   W84  C~3cnP      
2016 12  02.10188  02 01 59.824  -36 51 15.61  22.6i 14QT495   W84  C~4yTz      
2016 12  02.10188  02 01 59.82   -36 51 15.6   22.7i 14QT495   W84  C~3cnP      
2016 12  02.10325  02 01 59.820  -36 51 15.43  24.0g 14QT495   W84  C~4yTz      
2016 12  02.10325  02 01 59.82   -36 51 15.5   24.1g 14QT495   W84  C~3cnP      
2017 10  15.294016 02 19 12.76   -35 39 29.1   23.5r 14QT495   W84  C~352Q      
2017 10  15.29455  02 19 12.767  -35 39 28.90  23.6r 14QT495   W84  C~4yTz      
2017 10  15.29592  02 19 12.758  -35 39 28.96  24.5g 14QT495   W84  C~4yTz      
2017 10  28.327164 02 17 36.84   -35 44 47.3   23.5r 14QT495   W84  C~352Q      
2017 10  28.32769  02 17 36.848  -35 44 47.36  23.4r 14QT495   W84  C~4yTz      
2018 10  27.24667  02 28 58.434  -34 23 39.27  22.1Y 14QT495   W84  C~4yTz      
2018 11  26.21576  02 25 24.274  -34 21 19.17  23.4i 14QT495   W84  C~4yTz      

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    -0.08
     2   0.0000      0.04    -0.05       0.01    -0.06
     3   0.0000      0.03     0.05       0.05     0.05
     4   0.0000      0.05     0.07       0.09     0.08
     5   0.1613  -5149.79     0.01    -803.58    -0.02
     6   0.1613  -5149.93    -0.13    -803.49     0.06
     7   0.1613  -5149.81     0.11    -803.68    -0.17
     8   0.1613  -5149.94    -0.03    -803.61    -0.09
     9   0.2650  -7543.57     0.33    1161.21    -0.04
    10   0.2650  -7543.93    -0.03    1161.33     0.08
    11   0.3034  -7830.08    -0.04    2213.63    -0.21
    12   0.4236  -6150.11     0.01    5680.63     0.07
    13   0.4236  -6150.16    -0.05    5680.64     0.07
    14   1.0952   6753.99    -0.12   -1944.00     0.25
    15   1.2072   3196.45    -0.08   -1002.53     0.03
    16   1.2072   3196.46    -0.07   -1002.52     0.04
    17   1.2072   3196.36    -0.11   -1002.46     0.06
    18   1.2072   3196.32    -0.11   -1002.54    -0.04
    19   1.2100   3127.42     0.00    -951.79     0.05
    20   1.2100   3127.42     0.00    -951.81     0.02
    21   1.2100   3127.42     0.10    -951.79    -0.02
    22   1.2100   3127.42     0.09    -951.80    -0.03
    23   1.2100   3127.22    -0.01    -951.67     0.03
    24   1.2100   3127.23    -0.00    -951.63     0.06
    25   1.2100   3127.10    -0.03    -951.59     0.03
    26   2.0502  17902.89    -0.01   -2509.24     0.10
    27   2.0502  17902.94     0.04   -2509.28     0.07
    28   2.1266  15352.17    -0.06   -2794.01    -0.23
    29   2.1874  13381.38     0.05   -2205.43     0.13
    30   2.1874  13381.33    -0.00   -2205.46     0.10
    31   2.1874  13381.30     0.08   -2205.71    -0.20
    32   2.1874  13381.27     0.05   -2205.60    -0.10
    33   2.2799  11412.77    -0.01    -165.28     0.01
    34   2.2799  11412.74    -0.05    -165.26     0.03
    35   2.2799  11412.67    -0.07    -165.21    -0.03
    36   2.2799  11412.71    -0.04    -165.25    -0.06
    37   2.2799  11412.72     0.02    -165.13    -0.05
    38   2.2799  11412.76     0.06    -165.07     0.01
    39   3.1484  24296.16    -0.08   -3536.72    -0.10
    40   3.1484  24296.35     0.16   -3536.60     0.01
    41   3.1484  24296.22     0.16   -3536.59    -0.01
    42   3.1840  23140.05    -0.01   -3125.87     0.13
    43   3.1840  23140.09     0.08   -3125.98     0.01
    44   4.1804  32959.86    -0.14   -4054.51    -0.03
    45   4.2625  30848.94    -0.04   -2355.79    -0.02

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.

14QT495    quality flag:2

Type:       CENTAURS  CENTAURR  CENTAURS

axisobj        57.830    57.849    57.811
ecceobj         0.480     0.481     0.480
incobj         44.694    44.694    44.694
qmin           28.092    29.152    29.389
qmax           94.096    86.619    86.151
amean          59.003    57.282    57.185
amin           56.549    56.631    56.282
amax           61.995    58.212    58.365
emean           0.487     0.474     0.458
emin            0.447     0.461     0.421
emax            0.534     0.491     0.485
imean          42.922    43.101    43.633
imin           41.422    42.526    42.820
imax           44.003    43.555    44.797
excite_mean     0.837     0.831     0.828
fracstop        1.000     0.399     1.000
cjmean          2.301     2.300     2.300

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       178.5     297.2     172.5
kozaiamp        180.0      35.4     180.0