Orbit Fit and Astrometric record for 15PF312

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: 15PF312   
# Created Tue Dec 12 02:38:14 2017
# Orbit generated from Bernstein formalism
# Fitting   72 observations of   72
# Arc:   8.25y
# First observation: 2008/10/30
#  Last observation: 2017/01/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000838   0.024611   0.000040  -0.005368   0.025565   0.000000
# Chi-squared of fit:    42.96 DOF:  138 RMS:  0.14
# Min/Max residuals:    -0.34    0.38
# Exact a, adot, b, bdot, g, gdot:
  1.549294E-05  2.424041E-02 -2.258607E-06 -5.279979E-03  2.455139E-02 -1.184368E-03
# Covariance matrix:
  3.5338E-13 -1.3961E-13 -1.4790E-14  2.2186E-14 -7.9817E-14 -4.8953E-13
 -1.3961E-13  1.5782E-13  2.1742E-14 -3.2220E-14  7.4125E-14  7.2396E-13
 -1.4790E-14  2.1742E-14  2.6083E-13 -3.8171E-14  1.0184E-14  1.0297E-13
  2.2186E-14 -3.2220E-14 -3.8171E-14  1.1525E-14 -1.5437E-14 -1.5244E-13
 -7.9817E-14  7.4125E-14  1.0184E-14 -1.5437E-14  7.2411E-14  3.3535E-13
 -4.8953E-13  7.2396E-13  1.0297E-13 -1.5244E-13  3.3535E-13  3.4301E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -13.633271   27.162236   -0.177302   -0.230602   -0.950935  2454769.839509
# Heliocentric elements and errors
Epoch:              2454760.5000  =  2008/10/21
Mean Anomaly:          334.36638 +/-     0.039
Argument of Peri:      258.83739 +/-     0.048
Long of Asc Node:      160.56992 +/-     0.000
Inclination:            17.97828 +/-     0.000
Eccentricity:         0.09029427 +/-    0.0000
Semi-Major Axis:     45.29199007 +/-    0.0016
Time of Perihelion: 2462688.0311 +/-      12.2
Perihelion:          41.20238274 +/-    0.0023
Aphelion:            49.38159740 +/-    0.0025
Period (y)              304.8178 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.00902123 +/-    0.0004
Ecliptic Y           18.67053214 +/-    0.0002
Ecliptic Z           -9.60062532 +/-    0.0001
Ecliptic XDOT        -0.00146577 +/-    0.0000
Ecliptic YDOT         0.00228553 +/-    0.0000
Ecliptic ZDOT        -0.00054119 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.68225505 +/-    0.0003
Geocenter to KBO     40.73088995 +/-    0.0004
# Hcoef:  6.63

The following table shows the complete astrometric record for 15PF312. 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 (15PF312) followed by the observatory code and reference code for the source of the astrometry.

2008 10  30.338755 02 00 18.99   -02 16 48.0   21.8V 15PF312   645  C~2B02      
2008 10  30.339585 02 00 18.97   -02 16 47.7   21.6V 15PF312   645  C~2B02      
2008 10  30.342072 02 00 18.95   -02 16 48.0   22.5V 15PF312   645  C~2B02      
2009 09  16.396834 02 09 00.71   -01 41 19.1   22.3V 15PF312   645  C~2B02      
2009 09  16.397664 02 09 00.72   -01 41 19.2   22.0V 15PF312   645  C~2B02      
2009 09  16.400151 02 09 00.71   -01 41 19.1   23.0V 15PF312   645  C~2B02      
2015 08  14.391644 02 43 38.41   -00 07 45.6   22.7r 15PF312   W84  C~1bRB      
2015 08  14.393993 02 43 38.40   -00 07 46.0   22.8i 15PF312   W84  C~1bRB      
2015 08  14.397789 02 43 38.42   -00 07 45.7   23.3z 15PF312   W84  C~1bRB      
2015 08  18.303883 02 43 38.26   -00 09 24.9   23.1g 15PF312   W84  C~1bRB      
2015 08  18.306088 02 43 38.25   -00 09 24.9   22.4r 15PF312   W84  C~1bRB      
2015 08  18.308426 02 43 38.25   -00 09 25.1   22.0i 15PF312   W84  C~1bRB      
2015 08  22.295671 02 43 36.65   -00 11 11.3   22.4r 15PF312   W84  C~1bRB      
2015 08  22.298021 02 43 36.65   -00 11 11.5   22.3i 15PF312   W84  C~1bRB      
2015 08  31.291655 02 43 27.86   -00 15 29.7   22.4i 15PF312   W84  C~1bRB      
2015 08  31.295440 02 43 27.85   -00 15 29.9   22.2z 15PF312   W84  C~1bRB      
2015 09  11.313044 02 43 07.73   -00 21 12.0   22.6r 15PF312   W84  C~1bRB      
2015 09  11.315394 02 43 07.72   -00 21 12.3   22.2i 15PF312   W84  C~1bRB      
2015 09  11.319178 02 43 07.71   -00 21 12.1   22.1z 15PF312   W84  C~1bRB      
2015 09  19.324809 02 42 47.03   -00 25 32.0   22.8g 15PF312   W84  C~1bRB      
2015 09  19.327002 02 42 47.02   -00 25 32.0   22.2r 15PF312   W84  C~1bRB      
2015 09  19.329363 02 42 47.01   -00 25 32.2   22.1i 15PF312   W84  C~1bRB      
2015 09  19.333183 02 42 47.00   -00 25 32.2   22.1z 15PF312   W84  C~1bRB      
2015 09  23.199433 02 42 35.37   -00 27 39.6   23.3r 15PF312   W84  C~1bRB      
2015 09  23.201782 02 42 35.36   -00 27 39.5   22.0i 15PF312   W84  C~1bRB      
2015 09  23.205579 02 42 35.36   -00 27 39.3   22.1z 15PF312   W84  C~1bRB      
2016 08  15.338819 02 49 14.15   +00 04 17.5   22.4r 15PF312   W84  C~2B02      
2016 08  15.341192 02 49 14.15   +00 04 17.4   22.1i 15PF312   W84  C~2B02      
2016 08  15.347812 02 49 14.15   +00 04 17.2   22.7z 15PF312   W84  C~2B02      
2016 09  02.277517 02 49 01.73   -00 04 02.0   22.9g 15PF312   W84  C~2B02      
2016 09  02.279722 02 49 01.71   -00 04 02.1   22.3r 15PF312   W84  C~2B02      
2016 09  02.282072 02 49 01.72   -00 04 02.1   22.2i 15PF312   W84  C~2B02      
2016 09  02.286053 02 49 01.70   -00 04 02.2   22.3z 15PF312   W84  C~2B02      
2016 09  12.272500 02 48 42.69   -00 09 14.2   22.4r 15PF312   W84  C~2B02      
2016 09  12.274850 02 48 42.69   -00 09 14.4   22.5i 15PF312   W84  C~2B02      
2016 09  12.278819 02 48 42.69   -00 09 14.5   22.1z 15PF312   W84  C~2B02      
2016 09  22.279196 02 48 15.84   -00 14 38.7   23.1g 15PF312   W84  C~2B02      
2016 09  22.281435 02 48 15.83   -00 14 38.7   22.2r 15PF312   W84  C~2B02      
2016 09  22.283796 02 48 15.82   -00 14 38.8   22.0i 15PF312   W84  C~2B02      
2016 09  22.287766 02 48 15.81   -00 14 38.9   22.2z 15PF312   W84  C~2B02      
2016 09  29.204716 02 47 53.15   -00 18 25.1   22.9g 15PF312   W84  C~2B02      
2016 09  29.206910 02 47 53.15   -00 18 25.1   22.4r 15PF312   W84  C~2B02      
2016 09  29.209271 02 47 53.14   -00 18 25.2   22.1i 15PF312   W84  C~2B02      
2016 09  29.215868 02 47 53.13   -00 18 25.3   22.0z 15PF312   W84  C~2B02      
2016 10  09.134028 02 47 15.66   -00 23 44.0   21.9z 15PF312   W84  C~2B02      
2016 10  27.155712 02 45 56.96   -00 32 33.7   22.8g 15PF312   W84  C~2B02      
2016 10  27.157928 02 45 56.95   -00 32 33.9   22.2r 15PF312   W84  C~2B02      
2016 10  27.160289 02 45 56.94   -00 32 33.8   22.0i 15PF312   W84  C~2B02      
2016 10  27.166910 02 45 56.93   -00 32 33.8   21.9z 15PF312   W84  C~2B02      
2016 11  10.096308 02 44 51.76   -00 38 08.5   22.1i 15PF312   W84  C~2B02      
2016 11  10.100289 02 44 51.74   -00 38 08.6   21.9z 15PF312   W84  C~2B02      
2016 12  01.080058 02 43 18.00   -00 43 34.3   22.3r 15PF312   W84  C~2B02      
2016 12  01.082419 02 43 17.99   -00 43 34.3   22.1i 15PF312   W84  C~2B02      
2016 12  01.089028 02 43 17.97   -00 43 34.3   22.1z 15PF312   W84  C~2B02      
2016 12  08.105822 02 42 50.22   -00 44 27.0   22.1i 15PF312   W84  C~2B02      
2016 12  17.180336 02 42 18.49   -00 44 49.9   22.5z 15PF312   W84  C~2B02      
2016 12  24.044392 02 41 58.12   -00 44 33.2   22.9g 15PF312   W84  C~2B02      
2016 12  24.046597 02 41 58.12   -00 44 33.2   22.3r 15PF312   W84  C~2B02      
2016 12  24.048958 02 41 58.11   -00 44 33.2   22.1i 15PF312   W84  C~2B02      
2016 12  24.052940 02 41 58.09   -00 44 33.1   22.0z 15PF312   W84  C~2B02      
2016 12  28.127211 02 41 47.69   -00 44 09.2   22.3r 15PF312   W84  C~2B02      
2016 12  28.129572 02 41 47.68   -00 44 09.4   22.2i 15PF312   W84  C~2B02      
2016 12  28.133542 02 41 47.67   -00 44 09.3   22.0z 15PF312   W84  C~2B02      
2017 01  03.079045 02 41 34.92   -00 43 15.9   22.9g 15PF312   W84  C~2B02      
2017 01  03.081250 02 41 34.92   -00 43 16.2   22.4r 15PF312   W84  C~2B02      
2017 01  03.083611 02 41 34.91   -00 43 16.1   22.2i 15PF312   W84  C~2B02      
2017 01  03.087593 02 41 34.90   -00 43 16.0   22.1z 15PF312   W84  C~2B02      
2017 01  25.048953 02 41 15.21   -00 37 03.6   22.9g 15PF312   W84  C~2B02      
2017 01  29.054728 02 41 16.50   -00 35 28.8   23.1g 15PF312   W84  C~2B02      
2017 01  29.056956 02 41 16.50   -00 35 28.8   22.4r 15PF312   W84  C~2B02      
2017 01  29.059294 02 41 16.51   -00 35 28.8   22.4i 15PF312   W84  C~2B02      
2017 01  29.065914 02 41 16.50   -00 35 28.8   22.1z 15PF312   W84  C~2B02      

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    -0.24
  2   0.0000     -0.17    -0.09       0.39     0.15
  3   0.0000     -0.56    -0.29       0.21    -0.03
  4   0.8790   8071.71     0.04    -785.22     0.01
  5   0.8790   8071.82     0.19    -785.37    -0.13
  6   0.8790   8071.71     0.23    -785.22     0.05
  7   6.7873  39670.70    -0.01   -6751.01     0.10
  8   6.7873  39670.41    -0.28   -6751.34    -0.17
  9   6.7873  39670.81     0.15   -6751.16     0.10
 10   6.7980  39631.94     0.06   -6844.59    -0.05
 11   6.7980  39631.79    -0.05   -6844.54     0.06
 12   6.7980  39631.72    -0.09   -6844.73    -0.08
 13   6.8089  39569.32    -0.01   -6936.86     0.33
 14   6.8089  39569.25    -0.03   -6937.05     0.19
 15   6.8335  39346.32    -0.22   -7133.95     0.21
 16   6.8336  39346.10    -0.31   -7134.09     0.15
 17   6.8637  38927.71     0.05   -7348.07     0.09
 18   6.8637  38927.45    -0.10   -7348.30    -0.10
 19   6.8637  38927.38     0.00   -7348.06     0.21
 20   6.8857  38531.38     0.07   -7480.74     0.05
 21   6.8857  38531.23     0.05   -7480.69     0.14
 22   6.8857  38531.01    -0.04   -7480.82     0.04
 23   6.8857  38530.87     0.02   -7480.77     0.15
 24   6.8963  38315.18     0.03   -7537.54    -0.34
 25   6.8963  38315.07     0.06   -7537.39    -0.15
 26   6.8963  38315.14     0.36   -7537.20     0.09
 27   7.7919  44847.63    -0.26   -7921.87     0.11
 28   7.7919  44847.59    -0.28   -7921.96     0.08
 29   7.7919  44847.52    -0.30   -7922.15     0.04
 30   7.8410  44479.69     0.07   -8329.86    -0.06
 31   7.8410  44479.36    -0.19   -8329.84     0.00
 32   7.8410  44479.51     0.04   -8329.90    -0.01
 33   7.8411  44479.18    -0.16   -8329.88     0.09
 34   7.8684  44084.27    -0.05   -8521.93    -0.04
 35   7.8684  44084.20    -0.02   -8522.12    -0.19
 36   7.8684  44084.16     0.13   -8522.22    -0.22
 37   7.8958  43570.03     0.12   -8682.11    -0.04
 38   7.8958  43569.88     0.10   -8682.05     0.04
 39   7.8958  43569.70     0.06   -8682.09     0.04
 40   7.8958  43569.51     0.10   -8682.13     0.05
 41   7.9148  43153.56    -0.01   -8771.74    -0.01
 42   7.9148  43153.56     0.13   -8771.74     0.01
 43   7.9148  43153.37     0.10   -8771.78     0.00
 44   7.9148  43153.19     0.34   -8771.82     0.03
 45   7.9419  42486.56     0.06   -8867.11    -0.05
 46   7.9913  41140.68    -0.02   -8933.95     0.06
 47   7.9913  41140.46    -0.07   -8934.09    -0.08
 48   7.9913  41140.35     0.01   -8933.94     0.07
 49   7.9913  41140.20     0.38   -8933.88     0.12
 50   8.0295  40066.57     0.26   -8890.32     0.04
 51   8.0295  40066.24     0.24   -8890.30     0.03
 52   8.0869  38582.94    -0.07   -8679.99    -0.01
 53   8.0869  38582.80    -0.07   -8679.94     0.01
 54   8.0869  38582.51     0.07   -8679.83     0.03
 55   8.1061  38160.25     0.01   -8576.19    -0.11
 56   8.1310  37691.55     0.30   -8422.35    -0.16
 57   8.1498  37402.41    -0.04   -8293.87    -0.08
 58   8.1498  37402.41     0.05   -8293.87    -0.12
 59   8.1498  37402.26    -0.00   -8293.82    -0.11
 60   8.1498  37402.01    -0.10   -8293.61     0.02
 61   8.1610  37260.09     0.06   -8213.46    -0.00
 62   8.1610  37259.87    -0.08   -8213.59    -0.18
 63   8.1610  37259.76    -0.06   -8213.44    -0.11
 64   8.1772  37094.68    -0.06   -8092.35     0.12
 65   8.1773  37094.57    -0.11   -8092.63    -0.21
 66   8.1773  37094.46    -0.16   -8092.48    -0.11
 67   8.1773  37094.35    -0.17   -8092.33    -0.04
 68   8.2374  36945.92     0.12   -7630.41     0.05
 69   8.2484  36999.39    -0.04   -7547.61     0.12
 70   8.2484  36999.39    -0.08   -7547.61     0.07
 71   8.2484  36999.54     0.03   -7547.66    -0.03
 72   8.2484  36999.39    -0.22   -7547.61    -0.11

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.

15PF312    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.687    45.691    45.682
ecceobj         0.098     0.098     0.098
incobj         17.964    17.964    17.964
qmin           40.526    40.563    40.506
qmax           50.383    50.356    50.367
amean          45.325    45.330    45.321
amin           44.960    44.965    44.944
amax           45.712    45.711    45.701
emean           0.091     0.091     0.091
emin            0.080     0.080     0.080
emax            0.102     0.102     0.102
imean          17.301    17.301    17.302
imin           16.970    16.968    16.967
imax           17.646    17.642    17.643
excite_mean     0.311     0.311     0.311
fracstop        1.000     1.000     1.000
cjmean          2.998     2.998     2.998

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       179.7     179.9     179.9
kozaiamp        180.0     180.0     180.0