Orbit Fit and Astrometric record for 14DQ143

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: 14DQ143   
# Created Thu Dec 14 02:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   21
# Arc:   3.24y
# First observation: 2014/02/26
#  Last observation: 2017/05/26
Preliminary a, adot, b, bdot, g, gdot:
  -0.000016   0.033601   0.000001  -0.016385   0.028669   0.000000
# Chi-squared of fit:    14.14 DOF:   36 RMS:  0.15
# Min/Max residuals:    -0.43    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.808592E-05  3.355591E-02 -9.825026E-06 -1.636576E-02  2.864683E-02 -2.006641E-03
# Covariance matrix:
  2.0380E-13 -2.8076E-13 -5.0510E-14  1.7778E-13  1.2443E-13 -3.5160E-12
 -2.8076E-13  8.4259E-13  1.6273E-13 -5.7279E-13 -1.2613E-13  1.1310E-11
 -5.0510E-14  1.6273E-13  1.4912E-13 -1.8439E-13 -3.8196E-14  2.4512E-12
  1.7778E-13 -5.7279E-13 -1.8439E-13  5.1922E-13  1.3443E-13 -8.6276E-12
  1.2443E-13 -1.2613E-13 -3.8196E-14  1.3443E-13  3.1780E-13 -2.6734E-12
 -3.5160E-12  1.1310E-11  2.4512E-12 -8.6276E-12 -2.6734E-12  1.7041E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.644617 -171.515678    0.505637    0.009650   -0.848976  2456715.013898
# Heliocentric elements and errors
Epoch:              2456710.5000  =  2014/02/22
Mean Anomaly:          357.41596 +/-     0.014
Argument of Peri:      189.04144 +/-     0.057
Long of Asc Node:        8.96042 +/-     0.000
Inclination:            26.00345 +/-     0.000
Eccentricity:         0.54704359 +/-    0.0001
Semi-Major Axis:     78.48587503 +/-    0.0192
Time of Perihelion: 2458533.4852 +/-       9.9
Perihelion:          35.55068017 +/-    0.0111
Aphelion:           121.42106989 +/-    0.0305
Period (y)              695.3372 +/-      0.26
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -35.43924151 +/-    0.0007
Ecliptic Y           -4.77359771 +/-    0.0001
Ecliptic Z            0.39238912 +/-    0.0000
Ecliptic XDOT         0.00063965 +/-    0.0000
Ecliptic YDOT        -0.00314918 +/-    0.0000
Ecliptic ZDOT        -0.00156604 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.76144632 +/-    0.0007
Geocenter to KBO     34.90787549 +/-    0.0007
# Hcoef:  6.82

The following table shows the complete astrometric record for 14DQ143. 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 (14DQ143) followed by the observatory code and reference code for the source of the astrometry.

2014 02  26.51312  12 32 11.408  -02 46 19.22  22.2w 14DQ143   F51  C~1vXI      
2014 02  26.52550  12 32 11.335  -02 46 19.02  22.4w 14DQ143   F51  C~1vXI      
2014 02  26.53786  12 32 11.278  -02 46 18.79  22.5w 14DQ143   F51  C~1vXI      
2014 02  26.55022  12 32 11.229  -02 46 18.52  22.3w 14DQ143   F51  C~1vXI      
2014 04  04.40584  12 29 03.626  -02 32 15.27  22.4w 14DQ143   F51  C~1vXI      
2014 04  04.42858  12 29 03.537  -02 32 14.61  22.4w 14DQ143   F51  C~1vXI      
2014 04  04.43992  12 29 03.479  -02 32 14.56  22.4w 14DQ143   F51  C~1vXI      
2014 04  29.30573  12 27 00.280  -02 23 19.23  22.2w 14DQ143   F51  C~1vXI      
2014 04  29.31769  12 27 00.224  -02 23 18.84  22.5w 14DQ143   F51  C~1vXI      
2014 04  29.32965  12 27 00.156  -02 23 18.82  22.5w 14DQ143   F51  C~1vXI      
2014 04  29.34164  12 27 00.130  -02 23 18.49  22.7w 14DQ143   F51  C~1vXI      
2015 02  16.50309  12 38 30.096  -04 26 13.91  22.4w 14DQ143   F51  C~1vXI      
2015 02  16.51579  12 38 30.062  -04 26 13.77  22.3w 14DQ143   F51  C~1vXI      
2015 02  16.52848  12 38 29.997  -04 26 13.55  22.3w 14DQ143   F51  C~1vXI      
2015 02  16.54117  12 38 29.952  -04 26 13.58  22.6w 14DQ143   F51  C~1vXI      
2015 02  27.54302  12 37 45.582  -04 23 24.91  22.7w 14DQ143   F51  C~1vXI      
2015 02  27.55557  12 37 45.536  -04 23 24.73  22.5w 14DQ143   F51  C~1vXI      
2015 02  27.56810  12 37 45.475  -04 23 24.72  22.3w 14DQ143   F51  C~1vXI      
2015 02  27.58062  12 37 45.409  -04 23 24.50  22.4w 14DQ143   F51  C~1vXI      
2017 05  26.18720  12 42 15.41   -07 08 58.2   22.1R 14DQ143   G37  C~2Gid      
2017 05  26.25234  12 42 15.21   -07 08 57.4         14DQ143   G37  C~2Gid      

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     0.09       0.00     0.16
  2   0.0000     -1.08    -0.13      -0.25     0.03
  3   0.0001     -1.96    -0.14      -0.37     0.02
  4   0.0001     -2.74    -0.06      -0.41     0.09
  5   0.1010  -2918.75    -0.27    -333.51    -0.43
  6   0.1011  -2920.24     0.15    -333.43    -0.12
  7   0.1011  -2921.06     0.28    -333.73    -0.30
  8   0.1692  -4829.44     0.04    -570.56     0.05
  9   0.1692  -4830.37    -0.06    -570.53     0.20
 10   0.1692  -4831.31    -0.17    -570.91    -0.06
 11   0.1693  -4831.80     0.17    -570.76     0.21
 12   0.9719   7573.24    -0.04   -3284.99     0.04
 13   0.9719   7572.72     0.15   -3285.06     0.09
 14   0.9720   7571.74    -0.11   -3285.24     0.04
 15   0.9720   7571.13    -0.01   -3285.53    -0.12
 16   1.0021   6893.70    -0.05   -3390.67     0.15
 17   1.0022   6892.99     0.11   -3390.78     0.17
 18   1.0022   6892.15     0.13   -3391.13    -0.05
 19   1.0022   6891.15    -0.01   -3391.31    -0.11
 20   3.2435  14521.40     0.06  -10982.52    -0.03
 21   3.2436  14518.33    -0.12  -10982.94    -0.04

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.

14DQ143    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        77.350    77.425    77.277
ecceobj         0.540     0.541     0.540
incobj         26.071    26.072    26.071
qmin           34.877    33.304    34.878
qmax          123.528   125.226   123.511
amean          77.963    77.962    77.963
amin           76.871    76.849    76.852
amax           79.560    79.754    79.597
emean           0.543     0.549     0.543
emin            0.534     0.535     0.533
emax            0.553     0.571     0.553
imean          26.316    25.734    26.372
imin           26.050    24.318    26.051
imax           26.547    26.498    26.610
excite_mean     0.701     0.700     0.701
fracstop        1.000     1.000     1.000
cjmean          2.808     2.809     2.808

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       249.1     205.9     255.1
kozaiamp        180.0     180.0     180.0