Orbit Fit and Astrometric record for 14DR143

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: 14DR143   
# Created Fri Oct 20 01:38:24 2017
# Orbit generated from Bernstein formalism
# Fitting   38 observations of   38
# Arc:   3.22y
# First observation: 2012/02/28
#  Last observation: 2015/05/21
Preliminary a, adot, b, bdot, g, gdot:
   0.000019   0.016495  -0.000015  -0.002447   0.021233   0.000000
# Chi-squared of fit:    22.14 DOF:   70 RMS:  0.13
# Min/Max residuals:    -0.44    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.270336E-05  1.663976E-02 -2.178637E-06 -2.478920E-03  2.134862E-02  3.657881E-03
# Covariance matrix:
  1.7579E-13 -5.6424E-14 -5.2780E-16  4.0323E-16  7.2346E-14 -1.2145E-14
 -5.6424E-14  2.7100E-13  1.5044E-14 -4.2783E-14  2.7361E-13  5.6641E-12
 -5.2780E-16  1.5044E-14  1.4962E-13 -6.3309E-14  1.5359E-14  3.6202E-13
  4.0323E-16 -4.2783E-14 -6.3309E-14  4.1250E-14 -4.6419E-14 -1.0250E-12
  7.2346E-14  2.7361E-13  1.5359E-14 -4.6419E-14  4.8386E-13  6.2484E-12
 -1.2145E-14  5.6641E-12  3.6202E-13 -1.0250E-12  6.2484E-12  1.3554E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.116260 -174.913419    0.432040    0.095236   -0.888751  2455986.009956
# Heliocentric elements and errors
Epoch:              2455980.5000  =  2012/02/23
Mean Anomaly:          125.45700 +/-     0.095
Argument of Peri:      356.65581 +/-     0.084
Long of Asc Node:       39.85079 +/-     0.002
Inclination:            10.31528 +/-     0.001
Eccentricity:         0.29541008 +/-    0.0003
Semi-Major Axis:     39.24726036 +/-    0.0064
Time of Perihelion: 2424683.3451 +/-      22.3
Perihelion:          27.65322391 +/-    0.0118
Aphelion:            50.84129680 +/-    0.0137
Period (y)              245.8794 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -47.31698027 +/-    0.0015
Ecliptic Y           -3.77728384 +/-    0.0001
Ecliptic Z            4.99068300 +/-    0.0002
Ecliptic XDOT        -0.00031386 +/-    0.0000
Ecliptic YDOT        -0.00216580 +/-    0.0000
Ecliptic ZDOT        -0.00026602 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.72914635 +/-    0.0015
Geocenter to KBO     46.84142794 +/-    0.0015
# Hcoef:  5.71

The following table shows the complete astrometric record for 14DR143. 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 (14DR143) followed by the observatory code and reference code for the source of the astrometry.

2012 02  28.50919  12 28 22.683  +03 35 38.75  22.6w 14DR143   F51  C~1vXI      
2012 02  28.52356  12 28 22.636  +03 35 39.10  22.9w 14DR143   F51  C~1vXI      
2012 02  28.53794  12 28 22.577  +03 35 39.64  22.9w 14DR143   F51  C~1vXI      
2012 02  28.55238  12 28 22.540  +03 35 40.04  22.7w 14DR143   F51  C~1vXI      
2012 04  12.33726  12 25 28.200  +03 53 53.30  22.4w 14DR143   F51  C~1vXI      
2012 04  12.35121  12 25 28.151  +03 53 53.65  22.2w 14DR143   F51  C~1vXI      
2012 04  12.36513  12 25 28.082  +03 53 53.92  22.4w 14DR143   F51  C~1vXI      
2012 04  12.37916  12 25 28.039  +03 53 54.11  22.2w 14DR143   F51  C~1vXI      
2013 04  04.37950  12 29 17.985  +03 20 17.98  22.3w 14DR143   F51  C~1vXI      
2013 04  04.39423  12 29 17.935  +03 20 18.21  22.3w 14DR143   F51  C~1vXI      
2013 04  04.40897  12 29 17.886  +03 20 18.65  22.1w 14DR143   F51  C~1vXI      
2013 04  04.42373  12 29 17.837  +03 20 19.11  22.3w 14DR143   F51  C~1vXI      
2014 02  26.56523  12 34 57.974  +02 34 20.34  22.7w 14DR143   F51  C~1vXI      
2014 02  26.57746  12 34 57.952  +02 34 20.74  22.7w 14DR143   F51  C~1vXI      
2014 02  26.58971  12 34 57.903  +02 34 20.67  22.8w 14DR143   F51  C~1vXI      
2014 02  26.60194  12 34 57.861  +02 34 21.23  22.7w 14DR143   F51  C~1vXI      
2014 02  27.48858  12 34 54.843  +02 34 43.18  22.6w 14DR143   F51  C~1vXI      
2014 02  27.51316  12 34 54.759  +02 34 43.76  22.8w 14DR143   F51  C~1vXI      
2014 02  27.52550  12 34 54.713  +02 34 44.18  22.5w 14DR143   F51  C~1vXI      
2014 04  22.064132 12 31 25.07   +02 56 12.1   23.0r 14DR143   309  C~2HP3      
2014 04  22.068808 12 31 25.05   +02 56 12.2   23.3r 14DR143   309  C~2HP3      
2014 04  22.074259 12 31 25.03   +02 56 12.3   23.2r 14DR143   309  C~2HP3      
2014 04  22.079537 12 31 25.01   +02 56 12.4   23.0r 14DR143   309  C~2HP3      
2014 04  22.084236 12 31 24.99   +02 56 12.4   23.1r 14DR143   309  C~2HP3      
2014 04  29.25692  12 30 59.227  +02 58 20.03  22.4w 14DR143   F51  C~1vXI      
2014 04  29.26880  12 30 59.180  +02 58 20.01  22.6w 14DR143   F51  C~1vXI      
2014 04  29.28070  12 30 59.138  +02 58 20.29  22.4w 14DR143   F51  C~1vXI      
2014 04  29.29260  12 30 59.100  +02 58 20.73  22.4w 14DR143   F51  C~1vXI      
2015 02  19.50836  12 38 34.518  +02 01 21.29  22.7w 14DR143   F51  C~1vXI      
2015 02  19.52082  12 38 34.495  +02 01 21.53  22.7w 14DR143   F51  C~1vXI      
2015 02  19.53328  12 38 34.459  +02 01 21.95  22.4w 14DR143   F51  C~1vXI      
2015 03  23.48251  12 36 38.513  +02 14 35.80  22.3w 14DR143   F51  C~1vXI      
2015 03  23.49507  12 36 38.453  +02 14 36.24  22.4w 14DR143   F51  C~1vXI      
2015 03  23.50766  12 36 38.404  +02 14 36.37  22.5w 14DR143   F51  C~1vXI      
2015 03  23.52022  12 36 38.357  +02 14 36.68  22.2w 14DR143   F51  C~1vXI      
2015 05  21.26533  12 33 08.926  +02 32 40.31  22.2w 14DR143   F51  C~1vXI      
2015 05  21.29399  12 33 08.851  +02 32 40.36  22.1w 14DR143   F51  C~1vXI      
2015 05  21.30830  12 33 08.798  +02 32 40.50  22.2w 14DR143   F51  C~1vXI      

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    -0.08       0.00     0.07
  2   0.0000     -0.78    -0.00       0.04     0.09
  3   0.0001     -1.81    -0.16       0.19     0.21
  4   0.0001     -2.48     0.03       0.33     0.33
  5   0.1200  -2831.75     0.07     -31.04     0.01
  6   0.1200  -2832.56     0.14     -31.01     0.10
  7   0.1201  -2833.62    -0.03     -31.17    -0.01
  8   0.1201  -2834.28     0.20     -31.26    -0.03
  9   1.0975   1125.58    -0.31    -516.26    -0.18
 10   1.0976   1124.80    -0.11    -516.34    -0.22
 11   1.0976   1123.96     0.02    -516.23    -0.06
 12   1.0976   1123.10     0.15    -516.10     0.11
 13   1.9960   6897.91    -0.12   -1020.42    -0.27
 14   1.9961   6897.45     0.12   -1020.18    -0.06
 15   1.9961   6896.80     0.18   -1020.54    -0.44
 16   1.9961   6896.00     0.08   -1020.28    -0.20
 17   1.9986   6845.72     0.07   -1018.16    -0.08
 18   1.9986   6844.33     0.11   -1018.13    -0.10
 19   1.9987   6843.53     0.03   -1018.02    -0.01
 20   2.1453   3447.21    -0.04   -1086.61    -0.02
 21   2.1453   3446.89    -0.08   -1086.64    -0.02
 22   2.1453   3446.58    -0.07   -1086.66    -0.02
 23   2.1453   3446.26    -0.07   -1086.69    -0.03
 24   2.1453   3445.99    -0.06   -1086.81    -0.12
 25   2.1649   3041.03    -0.03   -1123.15     0.02
 26   2.1650   3040.39    -0.01   -1123.45    -0.21
 27   2.1650   3039.70    -0.05   -1123.44    -0.13
 28   2.1650   3039.00    -0.09   -1123.27     0.12
 29   2.9760  10670.46    -0.15   -1542.33     0.04
 30   2.9761  10670.05     0.07   -1542.25     0.09
 31   2.9761  10669.39     0.05   -1542.08     0.23
 32   3.0636   8754.69     0.00   -1506.90     0.13
 33   3.0636   8753.69    -0.16   -1506.85     0.19
 34   3.0637   8752.96    -0.05   -1507.02     0.04
 35   3.0637   8752.19     0.02   -1507.02     0.06
 36   3.2245   5437.53     0.19   -1763.11     0.27
 37   3.2246   5436.48     0.19   -1763.52     0.09
 38   3.2246   5435.70    -0.07   -1763.70     0.01

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.

14DR143    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.210    39.228    39.193
ecceobj         0.297     0.297     0.296
incobj         10.320    10.319    10.320
qmin           26.990    26.994    27.038
qmax           52.494    52.536    52.479
amean          39.454    39.454    39.455
amin           39.030    39.047    39.001
amax           39.977    40.008    39.999
emean           0.297     0.297     0.296
emin            0.278     0.279     0.277
emax            0.314     0.315     0.314
imean           8.983     8.937     9.019
imin            8.126     8.042     8.140
imax            9.892     9.903     9.843
excite_mean     0.335     0.336     0.335
fracstop        1.000     1.000     1.000
cjmean          2.923     2.922     2.923

libcent 0       180.5     180.0     180.3
libamp  0        64.7      57.3      71.3
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       176.5     179.9     171.8
kozaiamp        180.0     180.0     180.0