Orbit Fit and Astrometric record for 14QE442

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: 14QE442   
# Created Mon Dec 18 02:38:05 2017
# Orbit generated from Bernstein formalism
# Fitting   36 observations of   36
# Arc:   2.45y
# First observation: 2014/08/19
#  Last observation: 2017/01/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000029   0.023377   0.000013   0.008763   0.024988   0.000000
# Chi-squared of fit:    14.81 DOF:   66 RMS:  0.11
# Min/Max residuals:    -0.24    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.544752E-05  2.329351E-02  5.364410E-06  8.755514E-03  2.493230E-02  1.462680E-03
# Covariance matrix:
  4.2866E-13  2.9231E-13 -2.4251E-14  1.5529E-13  5.3290E-13  7.1721E-12
  2.9231E-13  2.3610E-12 -2.9011E-13  1.1253E-12  2.5386E-12  5.1119E-11
 -2.4251E-14 -2.9011E-13  3.0843E-13 -2.8161E-13 -2.9865E-13 -7.1332E-12
  1.5529E-13  1.1253E-12 -2.8161E-13  6.4794E-13  1.2072E-12  2.6240E-11
  5.3290E-13  2.5386E-12 -2.9865E-13  1.2072E-12  2.8690E-12  5.4935E-11
  7.1721E-12  5.1119E-11 -7.1332E-12  2.6240E-11  5.4935E-11  1.1893E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
  -17.486596   40.093948    0.975140   -0.084244   -0.267854  2456888.916773
# Heliocentric elements and errors
Epoch:              2456880.5000  =  2014/08/11
Mean Anomaly:           55.75312 +/-     0.835
Argument of Peri:      257.93674 +/-     0.991
Long of Asc Node:       77.83593 +/-     0.001
Inclination:            26.32676 +/-     0.001
Eccentricity:         0.04094324 +/-    0.0012
Semi-Major Axis:     41.28911560 +/-    0.0035
Time of Perihelion: 2441872.6503 +/-     224.7
Perihelion:          39.59860561 +/-    0.0504
Aphelion:            42.97962558 +/-    0.0504
Period (y)              265.3149 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.10497765 +/-    0.0020
Ecliptic Y           24.07480078 +/-    0.0017
Ecliptic Z          -12.05175144 +/-    0.0008
Ecliptic XDOT        -0.00131408 +/-    0.0000
Ecliptic YDOT         0.00223720 +/-    0.0000
Ecliptic ZDOT         0.00086888 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.38750332 +/-    0.0018
Geocenter to KBO     40.10861762 +/-    0.0027
# Hcoef:  7.57

The following table shows the complete astrometric record for 14QE442. 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 (14QE442) followed by the observatory code and reference code for the source of the astrometry.

2014 08  19.415995 02 52 27.35   -01 47 45.6   22.6i 14QE442   W84  C~2Azr      
2014 08  19.421644 02 52 27.36   -01 47 45.8   22.8z 14QE442   W84  C~2Azr      
2014 09  24.318623 02 51 17.58   -02 03 49.8   23.0r 14QE442   W84  C~2Azr      
2014 09  30.284074 02 50 56.11   -02 06 39.1   24.0g 14QE442   W84  C~2Azr      
2015 11  22.164757 02 51 20.88   -01 30 42.4   22.7z 14QE442   W84  C~2Azr      
2015 12  05.196620 02 50 20.38   -01 31 41.8   23.8r 14QE442   W84  C~2Azr      
2015 12  05.197998 02 50 20.38   -01 31 41.9   22.9i 14QE442   W84  C~2Azr      
2015 12  05.199363 02 50 20.37   -01 31 41.7   24.0g 14QE442   W84  C~2Azr      
2016 01  09.097413 02 48 27.64   -01 25 27.3   23.7g 14QE442   W84  C~2Azr      
2016 01  09.099653 02 48 27.65   -01 25 27.0   23.6r 14QE442   W84  C~2Azr      
2016 01  09.102014 02 48 27.64   -01 25 26.9   23.1i 14QE442   W84  C~2Azr      
2016 01  09.105995 02 48 27.62   -01 25 26.8   22.9z 14QE442   W84  C~2Azr      
2016 01  16.099803 02 48 17.06   -01 22 40.7   23.5r 14QE442   W84  C~2Azr      
2016 01  16.102176 02 48 17.06   -01 22 40.8   23.0i 14QE442   W84  C~2Azr      
2016 01  16.106146 02 48 17.06   -01 22 40.8   23.0z 14QE442   W84  C~2Azr      
2016 11  10.260451 02 56 48.26   -00 34 49.2   23.0z 14QE442   W84  C~2Azr      
2016 11  25.198102 02 55 34.26   -00 37 32.5   23.1r 14QE442   W84  C~2Azr      
2016 12  05.194826 02 54 48.17   -00 38 11.1   23.0i 14QE442   W84  C~2Azr      
2016 12  17.088559 02 53 59.72   -00 37 36.3   23.8g 14QE442   W84  C~2Azr      
2016 12  17.090775 02 53 59.70   -00 37 36.4   23.2r 14QE442   W84  C~2Azr      
2016 12  17.093137 02 53 59.70   -00 37 36.3   22.8i 14QE442   W84  C~2Azr      
2016 12  17.097106 02 53 59.68   -00 37 36.3   22.8z 14QE442   W84  C~2Azr      
2016 12  24.057818 02 53 35.51   -00 36 34.4   23.7g 14QE442   W84  C~2Azr      
2016 12  24.060023 02 53 35.50   -00 36 34.5   23.1r 14QE442   W84  C~2Azr      
2016 12  24.062384 02 53 35.49   -00 36 34.4   22.9i 14QE442   W84  C~2Azr      
2016 12  24.065023 02 53 35.50   -00 36 34.4   22.8z 14QE442   W84  C~2Azr      
2016 12  28.140579 02 53 22.99   -00 35 43.9   23.4r 14QE442   W84  C~2Azr      
2016 12  28.142928 02 53 22.99   -00 35 43.9   23.0i 14QE442   W84  C~2Azr      
2016 12  28.149549 02 53 22.98   -00 35 44.0   22.8z 14QE442   W84  C~2Azr      
2017 01  17.065341 02 52 42.35   -00 29 12.0   25.5g 14QE442   W84  C~2Azr      
2017 01  17.067546 02 52 42.35   -00 29 12.1   23.3r 14QE442   W84  C~2Azr      
2017 01  17.076516 02 52 42.33   -00 29 11.9   22.5z 14QE442   W84  C~2Azr      
2017 01  29.068166 02 52 35.77   -00 23 30.8   23.5g 14QE442   W84  C~2Azr      
2017 01  29.070382 02 52 35.79   -00 23 30.9   23.2r 14QE442   W84  C~2Azr      
2017 01  29.072743 02 52 35.77   -00 23 30.8   23.0i 14QE442   W84  C~2Azr      
2017 01  29.079375 02 52 35.77   -00 23 30.7   22.7z 14QE442   W84  C~2Azr      

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    -0.14       0.00     0.04
  2   0.0000      0.08     0.02      -0.24    -0.09
  3   0.0983  -1289.82     0.06    -600.11    -0.02
  4   0.1146  -1647.93    -0.03    -663.47     0.04
  5   1.2587   -637.92     0.08    1278.02    -0.17
  6   1.2944  -1520.21    -0.04    1497.48    -0.06
  7   1.2944  -1520.24     0.02    1497.38    -0.18
  8   1.2944  -1520.32     0.02    1497.62     0.03
  9   1.3900  -3017.12    -0.12    2368.52    -0.05
 10   1.3900  -3016.88     0.16    2368.76     0.12
 11   1.3900  -3017.00     0.10    2368.90     0.19
 12   1.3900  -3017.25    -0.07    2369.09     0.26
 13   1.4091  -3117.67     0.02    2575.52     0.15
 14   1.4091  -3117.70     0.01    2575.43    -0.02
 15   1.4091  -3117.70     0.05    2575.43    -0.14
 16   2.2282   5061.42     0.20    2977.08    -0.16
 17   2.2691   3953.89     0.02    3159.73    -0.03
 18   2.2965   3283.43     0.18    3333.57    -0.14
 19   2.3290   2601.66    -0.03    3588.10     0.04
 20   2.3290   2601.34    -0.24    3588.10    -0.02
 21   2.3290   2601.37    -0.08    3588.19     0.02
 22   2.3290   2601.08    -0.16    3588.28     0.02
 23   2.3481   2274.55    -0.08    3757.69     0.09
 24   2.3481   2274.38    -0.16    3757.64    -0.02
 25   2.3481   2274.27    -0.17    3757.78     0.06
 26   2.3481   2274.41     0.09    3757.73    -0.05
 27   2.3593   2111.02    -0.13    3863.00     0.08
 28   2.3593   2111.02    -0.04    3863.00     0.01
 29   2.3593   2110.85     0.04    3862.95    -0.21
 30   2.4138   1649.65     0.05    4422.11     0.23
 31   2.4138   1649.62     0.04    4422.02     0.07
 32   2.4139   1649.39    -0.10    4422.30     0.08
 33   2.4467   1659.55     0.07    4777.35     0.11
 34   2.4467   1659.81     0.31    4777.16    -0.15
 35   2.4467   1659.55     0.03    4777.35    -0.03
 36   2.4467   1659.58    -0.00    4777.45    -0.13

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.

14QE442    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.603    41.618    41.589
ecceobj         0.048     0.051     0.046
incobj         26.320    26.320    26.320
qmin           39.094    38.959    39.120
qmax           43.700    43.880    43.628
amean          41.311    41.325    41.295
amin           41.003    41.016    40.989
amax           41.630    41.645    41.611
emean           0.040     0.043     0.038
emin            0.030     0.033     0.028
emax            0.050     0.054     0.049
imean          24.795    24.796    24.793
imin           24.417    24.419    24.410
imax           25.182    25.196    25.191
excite_mean     0.421     0.422     0.421
fracstop        1.000     1.000     1.000
cjmean          2.854     2.854     2.854

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       178.9     177.7     181.3
kozaiamp        180.0     179.9     180.0