Orbit Fit and Astrometric record for 14QR441

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: 14QR441   
# Created Sun Oct 22 01:38:27 2017
# Orbit generated from Bernstein formalism
# Fitting   47 observations of   47
# Arc:   1.33y
# First observation: 2014/08/18
#  Last observation: 2015/12/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000009   0.026086  -0.000083  -0.000356   0.023165   0.000000
# Chi-squared of fit:    17.90 DOF:   88 RMS:  0.11
# Min/Max residuals:    -0.31    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.773757E-05  2.647072E-02  3.738795E-07 -4.554227E-04  2.365010E-02 -1.595905E-03
# Covariance matrix:
  1.2394E-13 -2.0810E-14 -2.5936E-14  1.6665E-14  8.2012E-14  2.9935E-12
 -2.0810E-14  9.0998E-13 -1.2594E-13  1.5765E-13  6.1352E-13  4.1703E-11
 -2.5936E-14 -1.2594E-13  1.3696E-13 -1.2361E-13 -1.2142E-13 -5.6661E-12
  1.6665E-14  1.5765E-13 -1.2361E-13  1.6375E-13  1.2634E-13  8.3472E-12
  8.2012E-14  6.1352E-13 -1.2142E-13  1.2634E-13  5.1951E-13  3.1121E-11
  2.9935E-12  4.1703E-11 -5.6661E-12  8.3472E-12  3.1121E-11  2.3204E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
  -43.070286  -13.458438    0.372683   -0.644648   -0.689773  2456887.712751
# Heliocentric elements and errors
Epoch:              2456880.5000  =  2014/08/11
Mean Anomaly:          353.58190 +/-     0.156
Argument of Peri:      283.34421 +/-     0.373
Long of Asc Node:       78.00225 +/-     0.002
Inclination:            42.23070 +/-     0.000
Eccentricity:         0.37046317 +/-    0.0006
Semi-Major Axis:     67.64602713 +/-    0.0371
Time of Perihelion: 2460503.4812 +/-      87.9
Perihelion:          42.58566550 +/-    0.0480
Aphelion:            92.70638876 +/-    0.0659
Period (y)              556.3802 +/-      0.46
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.86968263 +/-    0.0009
Ecliptic Y           -7.76894101 +/-    0.0002
Ecliptic Z          -28.87490907 +/-    0.0009
Ecliptic XDOT         0.00054204 +/-    0.0000
Ecliptic YDOT         0.00301574 +/-    0.0000
Ecliptic ZDOT         0.00008777 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.97736758 +/-    0.0009
Geocenter to KBO     42.28311206 +/-    0.0013
# Hcoef:  7.25

The following table shows the complete astrometric record for 14QR441. 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 (14QR441) followed by the observatory code and reference code for the source of the astrometry.

2014 08  18.211973 00 36 58.95   -43 57 41.2   23.9g 14QR441   W84  C~1VcI      
2014 08  18.214178 00 36 58.93   -43 57 41.1   23.1r 14QR441   W84  C~1VcI      
2014 08  18.216528 00 36 58.92   -43 57 41.3   22.9i 14QR441   W84  C~1VcI      
2014 08  18.220336 00 36 58.91   -43 57 41.5   22.8z 14QR441   W84  C~1VcI      
2014 08  22.378200 00 36 42.08   -44 01 08.6   23.8g 14QR441   W84  C~1VcI      
2014 08  22.380417 00 36 42.08   -44 01 08.8   22.9r 14QR441   W84  C~1VcI      
2014 08  22.382778 00 36 42.07   -44 01 08.9   23.3i 14QR441   W84  C~1VcI      
2014 08  22.386597 00 36 42.04   -44 01 09.2   23.0z 14QR441   W84  C~1VcI      
2014 09  12.099317 00 34 59.66   -44 15 35.0   23.6r 14QR441   W84  C~1VcI      
2014 09  12.105475 00 34 59.62   -44 15 35.1   23.4z 14QR441   W84  C~1VcI      
2015 01  08.047025 00 28 21.66   -43 24 20.1   23.0r 14QR441   W84  C~1VcI      
2015 01  08.049375 00 28 21.66   -43 24 19.8   23.1i 14QR441   W84  C~1VcI      
2015 01  08.053171 00 28 21.68   -43 24 19.5   22.8z 14QR441   W84  C~1VcI      
2015 01  15.061291 00 28 40.70   -43 16 01.7   24.2g 14QR441   W84  C~1VcI      
2015 01  15.063507 00 28 40.71   -43 16 01.5   23.4r 14QR441   W84  C~1VcI      
2015 01  15.065868 00 28 40.71   -43 16 01.4   23.0i 14QR441   W84  C~1VcI      
2015 01  15.069664 00 28 40.72   -43 16 01.2   23.5z 14QR441   W84  C~1VcI      
2015 01  22.047500 00 29 05.21   -43 07 42.8   23.0r 14QR441   W84  C~1VcI      
2015 01  22.049838 00 29 05.19   -43 07 42.5   23.1i 14QR441   W84  C~1VcI      
2015 01  22.053634 00 29 05.23   -43 07 42.2   22.8z 14QR441   W84  C~1VcI      
2015 01  29.039282 00 29 34.99   -42 59 27.1   23.3r 14QR441   W84  C~1VcI      
2015 01  29.045428 00 29 35.03   -42 59 26.5   22.0z 14QR441   W84  C~1VcI      
2015 09  13.188623 00 42 04.65   -43 28 08.1   22.7r 14QR441   W84  C~1ae1      
2015 09  13.190984 00 42 04.64   -43 28 08.3   22.7i 14QR441   W84  C~1ae1      
2015 09  13.194780 00 42 04.61   -43 28 08.3   22.7z 14QR441   W84  C~1ae1      
2015 09  18.132292 00 41 37.13   -43 30 47.6   23.0r 14QR441   W84  C~1ae1      
2015 09  18.134641 00 41 37.13   -43 30 47.6   23.3i 14QR441   W84  C~1ae1      
2015 09  18.138438 00 41 37.10   -43 30 47.5   23.3z 14QR441   W84  C~1ae1      
2015 09  26.084375 00 40 51.25   -43 34 15.0   23.4i 14QR441   W84  C~1ae1      
2015 09  26.088194 00 40 51.21   -43 34 15.0   22.8z 14QR441   W84  C~1ae1      
2015 10  16.021244 00 38 53.42   -43 38 03.1   24.1g 14QR441   W84  C~1ae1      
2015 10  16.023449 00 38 53.41   -43 38 03.2   23.2r 14QR441   W84  C~1ae1      
2015 10  16.025799 00 38 53.41   -43 38 03.3   23.3i 14QR441   W84  C~1ae1      
2015 10  16.029595 00 38 53.37   -43 38 03.2   23.0z 14QR441   W84  C~1ae1      
2015 10  30.010527 00 37 35.99   -43 36 13.6   23.9g 14QR441   W84  C~1cIX      
2015 10  30.012743 00 37 35.96   -43 36 13.7   22.9r 14QR441   W84  C~1cIX      
2015 10  30.015093 00 37 35.96   -43 36 13.6   22.9i 14QR441   W84  C~1cIX      
2015 10  30.018900 00 37 35.95   -43 36 13.7   22.4z 14QR441   W84  C~1cIX      
2015 11  03.029473 00 37 15.52   -43 35 01.1   23.7g 14QR441   W84  C~1cIX      
2015 11  03.031678 00 37 15.52   -43 35 01.0   23.2r 14QR441   W84  C~1cIX      
2015 11  03.034051 00 37 15.51   -43 35 00.9   22.9i 14QR441   W84  C~1cIX      
2015 11  03.037847 00 37 15.50   -43 35 00.8   22.0z 14QR441   W84  C~1cIX      
2015 11  08.227037 00 36 50.64   -43 32 59.7   23.2r 14QR441   W84  C~1cIX      
2015 11  08.229398 00 36 50.62   -43 32 59.7   22.6i 14QR441   W84  C~1cIX      
2015 11  08.233206 00 36 50.59   -43 32 59.5   22.7z 14QR441   W84  C~1cIX      
2015 12  16.036736 00 35 03.92   -43 04 44.5   23.0i 14QR441   W84  C~1h5p      
2015 12  16.040729 00 35 03.92   -43 04 44.4   22.7z 14QR441   W84  C~1h5p      

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    -0.01       0.00    -0.14
  2   0.0000     -0.13     0.00       0.20     0.11
  3   0.0000     -0.33    -0.05       0.09     0.04
  4   0.0000     -0.53    -0.00      -0.02     0.01
  5   0.0114   -264.96     0.01     -77.17     0.12
  6   0.0114   -265.07     0.05     -77.34    -0.02
  7   0.0114   -265.22     0.06     -77.36    -0.01
  8   0.0114   -265.65    -0.13     -77.44    -0.02
  9   0.0681  -1659.91    -0.05    -220.07    -0.13
 10   0.0682  -1660.33    -0.04    -219.93    -0.00
 11   0.3911  -3718.41    -0.14    4656.34    -0.02
 12   0.3911  -3718.25    -0.12    4656.60     0.13
 13   0.3911  -3717.91     0.00    4656.75     0.09
 14   0.4103  -3283.20     0.16    4976.33    -0.05
 15   0.4103  -3283.00     0.21    4976.45    -0.03
 16   0.4103  -3282.95     0.10    4976.53    -0.05
 17   0.4103  -3282.76     0.05    4976.65    -0.10
 18   0.4294  -2795.74     0.02    5265.09    -0.16
 19   0.4294  -2795.77    -0.18    5265.46     0.12
 20   0.4294  -2795.24     0.07    5265.49    -0.01
 21   0.4485  -2259.59    -0.11    5520.19     0.03
 22   0.4486  -2258.90     0.09    5520.48     0.10
 23   1.0704   3745.95     0.14    -314.88     0.06
 24   1.0704   3745.75     0.10    -314.99    -0.05
 25   1.0705   3745.48     0.09    -314.81     0.11
 26   1.0840   3408.00    -0.31    -283.46     0.02
 27   1.0840   3408.00    -0.14    -283.46    -0.00
 28   1.0840   3407.78    -0.10    -283.20     0.23
 29   1.1057   2876.97     0.16    -183.42    -0.15
 30   1.1058   2876.60     0.05    -183.18     0.02
 31   1.1603   1679.27     0.01     322.58     0.01
 32   1.1603   1679.12    -0.01     322.56    -0.09
 33   1.1603   1679.07     0.06     322.47    -0.25
 34   1.1603   1678.76    -0.05     322.79    -0.06
 35   1.1986   1031.10     0.23     869.30     0.19
 36   1.1986   1030.78    -0.01     869.40     0.18
 37   1.1986   1030.83     0.14     869.48     0.16
 38   1.1987   1030.68     0.14     869.45    -0.03
 39   1.2096    882.78    -0.15    1050.16    -0.02
 40   1.2096    882.83    -0.02    1050.25    -0.04
 41   1.2096    882.79     0.02    1050.39    -0.01
 42   1.2097    882.75     0.12    1050.53    -0.04
 43   1.2239    720.03     0.09    1297.91    -0.14
 44   1.2239    719.85    -0.03    1298.03    -0.14
 45   1.2239    719.68    -0.09    1298.37     0.02
 46   1.3274    642.55    -0.20    3353.51     0.09
 47   1.3274    642.60    -0.25    3353.59    -0.05

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.

14QR441    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        68.591    68.668    68.522
ecceobj         0.379     0.381     0.378
incobj         42.256    42.256    42.256
qmin           41.972    41.936    41.963
qmax           95.247    95.491    94.787
amean          68.048    68.085    67.968
amin           67.259    67.354    67.194
amax           68.975    69.056    68.883
emean           0.363     0.363     0.362
emin            0.348     0.349     0.349
emax            0.381     0.383     0.379
imean          41.127    41.164    41.118
imin           40.690    40.689    40.710
imax           41.572    41.586    41.538
excite_mean     0.751     0.752     0.751
fracstop        1.000     1.000     1.000
cjmean          2.552     2.552     2.553

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       188.0     193.6     197.8
kozaiamp        180.0     180.0     180.0