Orbit Fit and Astrometric record for 14SL404

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: 14SL404   
# Created Tue Dec  7 02:12:49 2021
# Orbit generated from Bernstein formalism
# Fitting     26 observations of     26
# Arc:   4.19y
# First observation: 2014/09/22
#  Last observation: 2018/12/02
Preliminary a, adot, b, bdot, g, gdot:
   0.000139   0.021466  -0.000019   0.001101   0.023357   0.000000
# Chi-squared of fit:     6.29 DOF:     46 RMS:  0.09
# Min/Max residuals:    -0.28    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.482097E-05  2.161501E-02  4.949720E-07  1.118216E-03  2.335336E-02  1.290530E-03
# Covariance matrix:
  2.3797E-13 -1.5557E-13  4.0252E-15 -9.8620E-15  1.1777E-14 -1.3638E-12
 -1.5557E-13  3.5652E-13 -2.8954E-14  2.4468E-14  2.9590E-13  4.1186E-12
  4.0252E-15 -2.8954E-14  1.7113E-13 -6.3917E-14 -3.6674E-14 -3.5331E-13
 -9.8620E-15  2.4468E-14 -6.3917E-14  3.6662E-14  1.6193E-14  3.2379E-13
  1.1777E-14  2.9590E-13 -3.6674E-14  1.6193E-14  4.9602E-13  3.4043E-12
 -1.3638E-12  4.1186E-12 -3.5331E-13  3.2379E-13  3.4043E-12  5.3345E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -26.409701   14.177931    0.264642   -0.431681   -0.869594  2456922.792718
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:          130.12967 +/-     0.188
Argument of Peri:      139.54233 +/-     0.185
Long of Asc Node:       97.59725 +/-     0.001
Inclination:            25.97612 +/-     0.000
Eccentricity:         0.07130621 +/-    0.0002
Semi-Major Axis:     41.66051568 +/-    0.0033
Time of Perihelion: 2421417.9775 +/-      51.0
Perihelion:          38.68986235 +/-    0.0100
Aphelion:            44.63116901 +/-    0.0101
Period (y)              268.9027 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.18685170 +/-    0.0011
Ecliptic Y            9.37676691 +/-    0.0003
Ecliptic Z          -19.04595560 +/-    0.0006
Ecliptic XDOT        -0.00043743 +/-    0.0000
Ecliptic YDOT         0.00249977 +/-    0.0000
Ecliptic ZDOT         0.00005023 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.69104971 +/-    0.0010
Geocenter to KBO     42.82039296 +/-    0.0013
# Hcoef:  7.44

The following table shows the complete astrometric record for 14SL404. 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 (14SL404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  22.29194  01 34 08.31   -18 42 45.7   24.4V 14SL404   W84  C~55SA      
2014 09  22.34519  01 34 08.09   -18 42 47.6         14SL404   W84  C~55SA      
2014 09  22.37754  01 34 07.95   -18 42 48.7         14SL404   W84  C~55SA      
2014 09  30.24336  01 33 34.339  -18 47 12.57  24.7g 14SL404   W84  C~55SA      
2015 01  12.07447  01 28 11.879  -18 37 08.64  23.8r 14SL404   W84  C~55SA      
2015 10  07.21672  01 37 43.163  -18 16 47.89  23.8i 14SL404   W84  C~55SA      
2015 10  07.21811  01 37 43.155  -18 16 47.67  23.8r 14SL404   W84  C~55SA      
2015 10  07.21947  01 37 43.140  -18 16 47.88  24.1g 14SL404   W84  C~55SA      
2015 10  22.23873  01 36 33.416  -18 22 44.97  22.5z 14SL404   W84  C~55SA      
2015 11  07.14576  01 35 20.792  -18 26 08.42  23.6i 14SL404   W84  C~55SA      
2015 11  07.14714  01 35 20.787  -18 26 08.50  24.0r 14SL404   W84  C~55SA      
2015 12  01.13021  01 33 48.273  -18 24 49.28  23.8r 14SL404   W84  C~55SA      
2015 12  01.13295  01 33 48.265  -18 24 49.22  24.5g 14SL404   W84  C~55SA      
2016 09  30.27774  01 42 46.930  -17 39 33.51  22.9i 14SL404   W84  C~55SA      
2016 09  30.27911  01 42 46.935  -17 39 33.87  24.8r 14SL404   W84  C~55SA      
2016 10  03.29288  01 42 33.700  -17 41 07.90  23.7r 14SL404   W84  C~55SA      
2016 10  03.29426  01 42 33.697  -17 41 07.74  23.6i 14SL404   W84  C~55SA      
2016 12  05.17107  01 38 08.527  -17 50 13.09  23.8r 14SL404   W84  C~55SA      
2016 12  05.17244  01 38 08.526  -17 50 13.13  24.0g 14SL404   W84  C~55SA      
2017 11  17.12733  01 43 46.489  -17 18 51.60  24.3r 14SL404   W84  C~55SA      
2017 11  27.07319  01 43 08.453  -17 18 07.29  23.1i 14SL404   W84  C~55SA      
2017 12  08.06658  01 42 33.287  -17 15 44.43  23.6i 14SL404   W84  C~55SA      
2017 12  08.06796  01 42 33.285  -17 15 44.26  23.5r 14SL404   W84  C~55SA      
2018 09  10.28839  01 53 09.139  -16 18 00.44  23.2r 14SL404   W84  C~55SA      
2018 10  18.31033  01 50 33.404  -16 38 26.40  24.2r 14SL404   W84  C~55SA      
2018 12  02.09567  01 47 22.920  -16 43 06.61  24.8r 14SL404   W84  C~55SA      

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    -0.04       0.00     0.05
     2   0.0001     -3.63    -0.01      -0.46     0.01
     3   0.0002     -5.89    -0.05      -0.66     0.07
     4   0.0218   -549.36     0.09     -47.49     0.01
     5   0.3060  -4499.77    -0.08    2352.15    -0.02
     6   1.0402   3426.53    -0.01     169.82    -0.13
     7   1.0402   3426.52     0.07     170.07     0.12
     8   1.0402   3426.23    -0.11     169.97     0.01
     9   1.0813   2374.19    -0.08     252.45    -0.07
    10   1.1249   1347.80    -0.03     490.09    -0.00
    11   1.1249   1347.71    -0.05     490.05    -0.07
    12   1.1905    177.82     0.14    1099.21    -0.12
    13   1.1905    177.74     0.16    1099.31    -0.10
    14   2.0232   8301.28     0.07     405.13     0.18
    15   2.0232   8301.19     0.08     404.77    -0.18
    16   2.0315   8089.72    -0.09     398.35     0.03
    17   2.0315   8089.74     0.04     398.51     0.19
    18   2.2036   4413.52    -0.02    1474.31     0.06
    19   2.2036   4413.49    -0.00    1474.28    -0.02
    20   3.1536   9597.39     0.08    1177.34     0.00
    21   3.1808   9120.32    -0.28    1445.83     0.05
    22   3.2109   8721.73    -0.00    1786.37    -0.08
    23   3.2109   8721.77     0.09    1786.54     0.04
    24   3.9671  18504.90     0.02    1054.83    -0.03
    25   4.0712  15937.65     0.04     905.79    -0.03
    26   4.1939  13328.14    -0.03    1817.34     0.00

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.

14SL404    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.992    42.003    41.982
ecceobj         0.067     0.067     0.067
incobj         25.985    25.985    25.985
qmin           38.062    38.083    38.064
qmax           45.698    45.743    45.681
amean          41.770    41.780    41.760
amin           41.446    41.467    41.446
amax           42.101    42.123    42.100
emean           0.072     0.073     0.072
emin            0.061     0.061     0.061
emax            0.086     0.086     0.086
imean          24.310    24.310    24.310
imin           23.916    23.914    23.919
imax           24.714    24.718    24.717
excite_mean     0.418     0.418     0.418
fracstop        1.000     1.000     1.000
cjmean          2.862     2.862     2.862

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       190.1     190.4     190.1
kozaiamp        180.0     180.0     180.0