Orbit Fit and Astrometric record for 14QL562

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: 14QL562   
# Created Fri Dec  3 02:12:34 2021
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   4.07y
# First observation: 2014/08/18
#  Last observation: 2018/09/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000039   0.022018   0.000135  -0.006655   0.024034   0.000000
# Chi-squared of fit:     7.33 DOF:     20 RMS:  0.13
# Min/Max residuals:    -0.29    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.443424E-05  2.161356E-02 -4.747618E-06 -6.516811E-03  2.349090E-02 -3.135025E-03
# Covariance matrix:
  8.4989E-13 -3.0200E-13 -3.1749E-14  4.1937E-14  2.8883E-13 -1.4187E-12
 -3.0200E-13  4.8610E-13  1.0403E-13 -1.4264E-13  3.8049E-13  4.9462E-12
 -3.1749E-14  1.0403E-13  5.4013E-13 -2.0609E-13  9.7427E-14  1.2430E-12
  4.1937E-14 -1.4264E-13 -2.0609E-13  1.2106E-13 -1.3581E-13 -1.7051E-12
  2.8883E-13  3.8049E-13  9.7427E-14 -1.3581E-13  9.2090E-13  4.7591E-12
 -1.4187E-12  4.9462E-12  1.2430E-12 -1.7051E-12  4.7591E-12  5.9147E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.998811   -0.388709    0.575482   -0.029039   -0.835578  2456887.785928
# Heliocentric elements and errors
Epoch:              2456880.5000  =  2014/08/11
Mean Anomaly:          290.70747 +/-     0.037
Argument of Peri:      273.61940 +/-     0.036
Long of Asc Node:      172.41352 +/-     0.000
Inclination:            16.97045 +/-     0.001
Eccentricity:         0.15559042 +/-    0.0004
Semi-Major Axis:     44.85937888 +/-    0.0089
Time of Perihelion: 2478003.8221 +/-       9.3
Perihelion:          37.87968949 +/-    0.0175
Aphelion:            51.83906826 +/-    0.0188
Period (y)              300.4610 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.37271706 +/-    0.0017
Ecliptic Y           -0.86764635 +/-    0.0000
Ecliptic Z           -1.48498026 +/-    0.0001
Ecliptic XDOT        -0.00037945 +/-    0.0000
Ecliptic YDOT         0.00251737 +/-    0.0000
Ecliptic ZDOT        -0.00074620 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.40680318 +/-    0.0017
Geocenter to KBO     42.56967982 +/-    0.0017
# Hcoef:  7.01

The following table shows the complete astrometric record for 14QL562. 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 (14QL562) followed by the observatory code and reference code for the source of the astrometry.

2014 08  18.28515  00 01 45.306  -01 59 18.33  22.7z 14QL562   W84  C~52Tr      
2014 10  23.19297  23 57 23.430  -02 32 09.71  24.0r 14QL562   W84  C~52Tr      
2016 08  26.20647  00 11 36.533  -01 45 08.24  23.5r 14QL562   W84  C~52Tr      
2016 09  11.23186  00 10 34.215  -01 53 22.26  23.1i 14QL562   W84  C~52Tr      
2016 09  22.10524  00 09 48.372  -01 59 10.10  22.8r 14QL562   W84  C~52Tr      
2016 10  05.15688  00 08 52.630  -02 06 00.11  23.6r 14QL562   W84  C~52Tr      
2016 11  05.06437  00 06 57.425  -02 19 31.10  23.2i 14QL562   W84  C~52Tr      
2016 11  05.06575  00 06 57.410  -02 19 30.83  22.5r 14QL562   W84  C~52Tr      
2016 12  21.05060  00 05 58.116  -02 25 56.39  23.7i 14QL562   W84  C~52Tr      
2017 09  18.22914  00 15 19.889  -01 47 44.58  23.4g 14QL562   W84  C~52Tr      
2018 09  14.30686  00 20 53.608  -01 36 08.28  23.4r 14QL562   W84  C~52Tr      
2018 09  14.30823  00 20 53.601  -01 36 08.27  23.0i 14QL562   W84  C~52Tr      
2018 09  14.30960  00 20 53.594  -01 36 08.58  23.7g 14QL562   W84  C~52Tr      

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     0.02       0.00     0.07
     2   0.1804  -4385.98    -0.08    -247.92    -0.29
     3   2.0231   8473.01    -0.03   -2755.73    -0.06
     4   2.0669   7417.53    -0.07   -2835.45    -0.03
     5   2.0967   6647.60     0.03   -2879.91    -0.01
     6   2.1324   5716.88     0.02   -2922.22    -0.01
     7   2.2171   3808.70     0.19   -2976.77     0.01
     8   2.2171   3808.61     0.16   -2976.43     0.34
     9   2.3430   2839.57    -0.22   -2975.58     0.16
    10   3.0854  11488.52     0.03   -4240.46     0.12
    11   4.0740  16377.66     0.02   -5612.19    -0.06
    12   4.0740  16377.56     0.02   -5612.14    -0.00
    13   4.0740  16377.34    -0.10   -5612.38    -0.24

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.

14QL562    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.205    45.229    45.181
ecceobj         0.156     0.156     0.155
incobj         16.897    16.896    16.897
qmin           37.322    37.292    37.318
qmax           53.024    53.145    52.942
amean          44.987    45.020    44.964
amin           44.620    44.646    44.585
amax           45.405    45.454    45.376
emean           0.153     0.153     0.152
emin            0.139     0.139     0.138
emax            0.168     0.169     0.167
imean          16.758    16.758    16.755
imin           16.225    16.226    16.235
imax           17.268    17.287    17.264
excite_mean     0.326     0.327     0.326
fracstop        1.000     1.000     1.000
cjmean          2.982     2.982     2.982

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       180.9     182.7     181.0
kozaiamp        180.0     180.0     179.9