Orbit Fit and Astrometric record for 14RL74

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: 14RL74    
# Created Sat Nov 27 02:12:42 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     45 observations of     45
# Arc:   7.16y
# First observation: 2014/09/15
#  Last observation: 2021/11/11
# Chi-squared of fit:    13.40 DOF:     84 RMS:  0.10
# Min/Max residuals:    -0.29    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.270740E-05  1.617032E-02 -2.567517E-06 -3.806608E-03  1.998101E-02 -2.976889E-03
# Covariance matrix:
  2.3650E-13 -4.3629E-14 -1.1698E-14  8.8100E-15  1.3210E-13 -2.3747E-13
 -4.3629E-14  4.6508E-14  1.0518E-14 -1.1736E-14  1.2248E-14  3.9427E-13
 -1.1698E-14  1.0518E-14  6.7680E-14 -1.7594E-14 -5.8067E-16  1.0218E-13
  8.8100E-15 -1.1736E-14 -1.7594E-14  9.8790E-15 -3.3259E-15 -1.1540E-13
  1.3210E-13  1.2248E-14 -5.8067E-16 -3.3259E-15  1.3584E-13  1.6652E-13
 -2.3747E-13  3.9427E-13  1.0218E-13 -1.1540E-13  1.6652E-13  3.8957E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -27.717756   33.218320    0.662430   -0.353398   -0.672942  2456915.828318
# Heliocentric elements and errors
Epoch:              2456916.5000  =  2014/09/16
Mean Anomaly:          257.68332 +/-     0.026
Argument of Peri:        9.39654 +/-     0.018
Long of Asc Node:      150.30439 +/-     0.001
Inclination:            30.30933 +/-     0.000
Eccentricity:         0.20927427 +/-    0.0001
Semi-Major Axis:     46.84274564 +/-    0.0033
Time of Perihelion: 2490198.2306 +/-      12.4
Perihelion:          37.03976402 +/-    0.0052
Aphelion:            56.64572726 +/-    0.0061
Period (y)              320.6061 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.06071609 +/-    0.0007
Ecliptic Y           24.13549333 +/-    0.0004
Ecliptic Z          -23.27806081 +/-    0.0004
Ecliptic XDOT        -0.00172359 +/-    0.0000
Ecliptic YDOT         0.00151840 +/-    0.0000
Ecliptic ZDOT        -0.00027190 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   50.72495743 +/-    0.0006
Geocenter to KBO     50.04767190 +/-    0.0009
# Hcoef:  5.81

The following table shows the complete astrometric record for 14RL74. 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 (14RL74) followed by the observatory code and reference code for the source of the astrometry.

2014 09  15.32754  02 41 32.44   -13 31 21.0   22.3z 14RL74    W84  C~3cnV      
2014 10  27.26182  02 39 12.177  -13 53 21.07  23.3g 14RL74    W84  C~4yUF      
2014 10  29.32490  02 39 03.887  -13 54 06.36  23.7g 14RL74    W84  C~4yUF      
2014 11  03.31203  02 38 43.75   -13 55 45.9   23.2r 14RL74    W84  C~3cnV      
2014 11  03.31340  02 38 43.751  -13 55 46.00  23.4g 14RL74    W84  C~4yUF      
2014 11  03.31340  02 38 43.75   -13 55 46.0   23.4g 14RL74    W84  C~3cnV      
2014 12  12.19982  02 36 19.157  -13 59 22.62  22.8z 14RL74    W84  C~4yUF      
2014 12  12.19982  02 36 19.16   -13 59 22.6   22.7z 14RL74    W84  C~3cnV      
2014 12  12.20119  02 36 19.152  -13 59 22.54  22.6i 14RL74    W84  C~4yUF      
2014 12  12.20119  02 36 19.15   -13 59 22.5   22.7i 14RL74    W84  C~3cnV      
2014 12  16.19628  02 36 07.467  -13 58 45.42  22.6i 14RL74    W84  C~4yUF      
2014 12  20.17834  02 35 56.724  -13 57 57.61  23.6g 14RL74    W84  C~4yUF      
2014 12  20.17834  02 35 56.72   -13 57 57.6   24.0g 14RL74    W84  C~3cnV      
2014 12  24.17015  02 35 46.930  -13 56 59.38  22.2r 14RL74    W84  C~4yUF      
2014 12  24.17015  02 35 46.93   -13 56 59.3   22.7r 14RL74    W84  C~3cnV      
2015 12  17.16252  02 39 58.245  -13 52 16.56  22.5i 14RL74    W84  C~4yUF      
2015 12  17.16252  02 39 58.24   -13 52 16.5   22.4i 14RL74    W84  C~3cnV      
2015 12  17.16391  02 39 58.238  -13 52 16.74  22.6r 14RL74    W84  C~4yUF      
2015 12  17.16391  02 39 58.24   -13 52 16.7   22.7r 14RL74    W84  C~3cnV      
2015 12  17.16529  02 39 58.238  -13 52 16.65  22.9g 14RL74    W84  C~4yUF      
2016 09  11.40594  02 49 28.196  -13 15 22.59  22.9i 14RL74    W84  C~4yUF      
2016 09  24.29108  02 48 57.062  -13 23 20.35  22.7r 14RL74    W84  C~4yUF      
2016 09  24.29108  02 48 57.06   -13 23 20.3   22.7r 14RL74    W84  C~3cnV      
2016 09  25.25510  02 48 54.339  -13 23 55.09  23.5g 14RL74    W84  C~4yUF      
2016 09  25.25510  02 48 54.34   -13 23 55.1   23.6g 14RL74    W84  C~3cnV      
2016 11  17.21008  02 45 35.751  -13 45 52.35  23.3z 14RL74    W84  C~4yUF      
2016 12  05.21684  02 44 27.909  -13 46 55.77  22.5r 14RL74    W84  C~4yUF      
2016 12  05.21684  02 44 27.91   -13 46 55.8   22.6r 14RL74    W84  C~3cnV      
2016 12  05.21821  02 44 27.903  -13 46 55.81  22.8i 14RL74    W84  C~4yUF      
2016 12  05.21821  02 44 27.90   -13 46 55.8   22.9i 14RL74    W84  C~3cnV      
2016 12  05.21960  02 44 27.905  -13 46 55.80  23.0g 14RL74    W84  C~4yUF      
2016 12  05.21960  02 44 27.90   -13 46 55.8   23.3g 14RL74    W84  C~3cnV      
2017 02  02.04873  02 42 52.242  -13 26 00.76  22.7z 14RL74    W84  C~4yUF      
2017 10  21.28416  02 51 22.465  -13 30 19.69  22.8r 14RL74    W84  C~4yUF      
2017 10  21.28553  02 51 22.462  -13 30 19.86  22.9i 14RL74    W84  C~4yUF      
2017 10  21.28691  02 51 22.450  -13 30 19.80  23.5g 14RL74    W84  C~4yUF      
2018 01  16.10243  02 46 46.836  -13 28 31.48  22.9r 14RL74    W84  C~4yUF      
2018 01  16.10379  02 46 46.831  -13 28 31.43  22.6i 14RL74    W84  C~4yUF      
2018 01  16.10517  02 46 46.823  -13 28 31.43  23.8g 14RL74    W84  C~4yUF      
2021 10  31.470119 03 06 44.541  -13 02 36.98  22.5w 14RL74    F51  C~5BUG      
2021 10  31.482138 03 06 44.471  -13 02 36.84  22.7w 14RL74    F51  C~5BUG      
2021 10  31.494197 03 06 44.407  -13 02 37.21  22.6w 14RL74    F51  C~5BUG      
2021 11  11.404374 03 05 59.142  -13 06 03.89  22.5w 14RL74    F51  C~5BUG      
2021 11  11.430139 03 05 59.050  -13 06 04.07  22.7w 14RL74    F51  C~5BUG      
2021 11  11.443043 03 05 59.007  -13 06 04.16  23.0w 14RL74    F51  C~5BUG      

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     0.05       0.00    -0.08
     2   0.1148      0.00    -0.09       0.00    -0.13
     3   0.1205      0.00    -0.18       0.00     0.01
     4   0.1341      0.00    -0.03       0.00     0.10
     5   0.1341      0.00     0.05       0.00     0.02
     6   0.1341      0.00     0.07       0.00     0.02
     7   0.2406      0.00     0.08       0.00    -0.10
     8   0.2406      0.00     0.13       0.00    -0.08
     9   0.2406      0.00     0.04       0.00     0.01
    10   0.2406      0.00     0.07       0.00    -0.03
    11   0.2515      0.00    -0.00       0.00     0.04
    12   0.2624      0.00    -0.07       0.00     0.13
    13   0.2624      0.00    -0.01       0.00     0.12
    14   0.2734      0.00     0.03       0.00    -0.01
    15   0.2734      0.00     0.03       0.00    -0.09
    16   1.2535      0.00    -0.11       0.00     0.19
    17   1.2535      0.00    -0.03       0.00     0.13
    18   1.2535      0.00    -0.05       0.00    -0.02
    19   1.2535      0.00    -0.08       0.00    -0.06
    20   1.2535      0.00    -0.02       0.00     0.01
    21   1.9906      0.00    -0.05       0.00     0.14
    22   2.0259      0.00    -0.00       0.00     0.17
    23   2.0259      0.00     0.03       0.00     0.12
    24   2.0285      0.00     0.09       0.00     0.00
    25   2.0285      0.00     0.07       0.00     0.01
    26   2.1735      0.00    -0.00       0.00    -0.11
    27   2.2228      0.00     0.02       0.00    -0.04
    28   2.2228      0.00     0.00       0.00    -0.01
    29   2.2228      0.00    -0.06       0.00    -0.04
    30   2.2228      0.00    -0.02       0.00    -0.05
    31   2.2228      0.00     0.09       0.00    -0.05
    32   2.2228      0.00     0.01       0.00    -0.05
    33   2.3839      0.00     0.11       0.00     0.01
    34   3.0991      0.00    -0.01       0.00     0.03
    35   3.0991      0.00     0.03       0.00    -0.10
    36   3.0991      0.00    -0.07       0.00    -0.00
    37   3.3368      0.00     0.10       0.00    -0.02
    38   3.3368      0.00     0.05       0.00    -0.01
    39   3.3368      0.00    -0.05       0.00    -0.05
    40   7.1270      0.00     0.23       0.00    -0.29
    41   7.1270      0.00    -0.07       0.00     0.11
    42   7.1271      0.00    -0.28       0.00     0.01
    43   7.1570      0.00    -0.20       0.00    -0.13
    44   7.1570      0.00     0.06       0.00     0.09
    45   7.1571      0.00     0.24       0.00     0.20

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.

14RL74    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        47.126    47.126    47.126
ecceobj         0.203     0.203     0.203
incobj         30.243    30.243    30.243
qmin           35.601    35.608    35.606
qmax           58.576    58.522    58.531
amean          46.833    46.833    46.833
amin           46.426    46.431    46.420
amax           47.332    47.317    47.315
emean           0.218     0.218     0.218
emin            0.201     0.201     0.201
emax            0.238     0.237     0.237
imean          28.929    28.929    28.929
imin           28.432    28.430    28.432
imax           29.352    29.348    29.356
excite_mean     0.531     0.531     0.531
fracstop        1.000     1.000     1.000
cjmean          2.773     2.773     2.773

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       171.3     171.4     171.3
kozaiamp        180.0     179.9     180.0