Orbit Fit and Astrometric record for 15FP345

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: 15FP345   
# Created Fri Dec 15 02:38:07 2017
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   32
# Arc:   2.16y
# First observation: 2013/04/11
#  Last observation: 2015/06/08
Preliminary a, adot, b, bdot, g, gdot:
   0.000134   0.033002   0.000022   0.002047   0.029322   0.000000
# Chi-squared of fit:    25.88 DOF:   56 RMS:  0.16
# Min/Max residuals:    -0.39    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.829703E-05  3.332705E-02  3.794591E-07  2.063029E-03  2.910156E-02  3.564278E-03
# Covariance matrix:
  3.6269E-13 -6.5153E-13  3.8251E-15 -3.0526E-14 -3.5965E-13 -7.1546E-12
 -6.5153E-13  3.2573E-12 -1.5691E-14  1.9084E-13  2.5470E-12  4.3955E-11
  3.8251E-15 -1.5691E-14  2.7022E-13 -1.4374E-13 -6.7050E-15 -2.2863E-13
 -3.0526E-14  1.9084E-13 -1.4374E-13  1.0355E-13  1.5422E-13  2.6489E-12
 -3.5965E-13  2.5470E-12 -6.7050E-15  1.5422E-13  2.2753E-12  3.4960E-11
 -7.1546E-12  4.3955E-11 -2.2863E-13  2.6489E-12  3.4960E-11  6.1114E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.660965 -160.785905   -0.041350    0.168347   -0.988743  2456393.878248
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:           23.09707 +/-     0.107
Argument of Peri:       33.39235 +/-     0.190
Long of Asc Node:      130.09537 +/-     0.003
Inclination:            10.03133 +/-     0.000
Eccentricity:         0.21881715 +/-    0.0005
Semi-Major Axis:     43.69355859 +/-    0.0070
Time of Perihelion: 2449622.2107 +/-      31.4
Perihelion:          34.13265844 +/-    0.0214
Aphelion:            53.25445874 +/-    0.0224
Period (y)              288.8247 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.92072369 +/-    0.0017
Ecliptic Y          -11.51543573 +/-    0.0006
Ecliptic Z            5.76666350 +/-    0.0003
Ecliptic XDOT         0.00074415 +/-    0.0000
Ecliptic YDOT        -0.00305846 +/-    0.0000
Ecliptic ZDOT         0.00024775 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.35015864 +/-    0.0016
Geocenter to KBO     34.36242188 +/-    0.0018
# Hcoef:  6.70

The following table shows the complete astrometric record for 15FP345. 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 (15FP345) followed by the observatory code and reference code for the source of the astrometry.

2013 04  11.37747  13 25 30.842  +01 25 40.30  22.0w 15FP345   F51  C~1vYW      
2013 04  11.39111  13 25 30.771  +01 25 40.80  22.2w 15FP345   F51  C~1vYW      
2013 04  11.40482  13 25 30.690  +01 25 40.95  22.2w 15FP345   F51  C~1vYW      
2013 04  11.41856  13 25 30.627  +01 25 41.50  22.6w 15FP345   F51  C~1vYW      
2014 04  30.30977  13 31 08.958  +00 58 18.08  22.5w 15FP345   F51  C~1vYW      
2014 04  30.32300  13 31 08.912  +00 58 18.53  22.5w 15FP345   F51  C~1vYW      
2014 04  30.33616  13 31 08.847  +00 58 19.12  22.4w 15FP345   F51  C~1vYW      
2014 04  30.34936  13 31 08.769  +00 58 19.20  22.2w 15FP345   F51  C~1vYW      
2014 07  01.27380  13 28 00.513  +01 05 01.28  22.6w 15FP345   F51  C~1vYW      
2014 07  01.28526  13 28 00.505  +01 05 01.09  22.7w 15FP345   F51  C~1vYW      
2014 07  01.29672  13 28 00.504  +01 05 00.88  22.3w 15FP345   F51  C~1vYW      
2014 07  01.30815  13 28 00.491  +01 05 00.65  22.7w 15FP345   F51  C~1vYW      
2015 03  25.44266  13 41 21.633  +00 03 14.33  22.3w 15FP345   F51  C~1vYW      
2015 03  25.45747  13 41 21.567  +00 03 14.80  22.2w 15FP345   F51  C~1vYW      
2015 03  25.47241  13 41 21.498  +00 03 15.30  22.2w 15FP345   F51  C~1vYW      
2015 03  25.48742  13 41 21.438  +00 03 15.92  22.2w 15FP345   F51  C~1vYW      
2015 04  15.44208  13 39 36.953  +00 14 56.97  22.1w 15FP345   F51  C~1vYW      
2015 04  15.45725  13 39 36.834  +00 14 57.42  22.0w 15FP345   F51  C~1vYW      
2015 04  15.48671  13 39 36.704  +00 14 58.37  22.2w 15FP345   F51  C~1vYW      
2015 04  21.40750  13 39 06.098  +00 17 57.56  22.0w 15FP345   F51  C~1vYW      
2015 04  21.43460  13 39 05.965  +00 17 58.14  22.1w 15FP345   F51  C~1vYW      
2015 04  21.44818  13 39 05.869  +00 17 58.48  21.9w 15FP345   F51  C~1vYW      
2015 05  19.33526  13 36 52.364  +00 28 34.17  22.1w 15FP345   F51  C~1vYW      
2015 05  19.34694  13 36 52.304  +00 28 34.46  22.2w 15FP345   F51  C~1vYW      
2015 05  19.35864  13 36 52.249  +00 28 34.84  22.2w 15FP345   F51  C~1vYW      
2015 06  07.27545  13 35 45.024  +00 31 33.21  22.3w 15FP345   F51  C~1vYW      
2015 06  07.29696  13 35 44.959  +00 31 33.16  22.4w 15FP345   F51  C~1vYW      
2015 06  07.30872  13 35 44.923  +00 31 33.04  22.2w 15FP345   F51  C~1vYW      
2015 06  08.27364  13 35 42.228  +00 31 36.26  22.6w 15FP345   F51  C~1vYW      
2015 06  08.28538  13 35 42.196  +00 31 36.18  22.4w 15FP345   F51  C~1vYW      
2015 06  08.29710  13 35 42.164  +00 31 36.07  22.4w 15FP345   F51  C~1vYW      
2015 06  08.30894  13 35 42.146  +00 31 36.56  22.4w 15FP345   F51  C~1vYW      

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    -0.04       0.00     0.15
  2   0.0000     -1.17    -0.05       0.06     0.21
  3   0.0001     -2.36    -0.05      -0.25    -0.11
  4   0.0001     -3.44     0.04      -0.10     0.04
  5   1.0511   5317.19    -0.22     384.86    -0.39
  6   1.0512   5316.38     0.02     385.02    -0.17
  7   1.0512   5315.26    -0.06     385.20     0.08
  8   1.0513   5314.14    -0.12     384.83    -0.22
  9   1.2208   2545.77     0.15    -304.58     0.10
 10   1.2208   2545.73     0.12    -304.80     0.05
 11   1.2209   2545.80     0.21    -305.01     0.03
 12   1.2209   2545.70     0.13    -305.29    -0.08
 13   1.9523  15100.32    -0.02     784.78     0.15
 14   1.9523  15099.22     0.06     784.84     0.13
 15   1.9523  15098.06     0.10     784.92     0.12
 16   1.9524  15096.99     0.22     785.15     0.28
 17   2.0098  13372.91     0.28     844.32    -0.10
 18   2.0098  13371.08    -0.26     844.06    -0.34
 19   2.0099  13368.90     0.08     844.21    -0.17
 20   2.0261  12874.14    -0.13     837.25     0.05
 21   2.0262  12872.06     0.08     837.04    -0.09
 22   2.0262  12870.59    -0.24     836.81    -0.28
 23   2.1026  10769.16     0.36     671.20    -0.06
 24   2.1026  10768.21     0.18     671.13    -0.01
 25   2.1026  10767.30     0.04     671.17     0.14
 26   2.1544   9763.50    -0.16     456.48     0.17
 27   2.1545   9762.61    -0.14     456.06     0.04
 28   2.1545   9762.16    -0.10     455.75    -0.11
 29   2.1571   9723.41    -0.21     443.50     0.23
 30   2.1572   9722.99    -0.15     443.24     0.14
 31   2.1572   9722.59    -0.08     442.96     0.02
 32   2.1572   9722.15 (  -0.03)    443.31 (   0.53)

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.

15FP345    quality flag:3

Type:         7:4EEE    7:4EEE    7:4EEE
Type:         7:4EII    7:4EII    7:4EII

axisobj        43.483    43.508    43.459
ecceobj         0.215     0.216     0.213
incobj         10.039    10.039    10.039
qmin           32.064    32.391    31.899
qmax           55.860    55.503    56.055
amean          43.726    43.726    43.726
amin           43.300    43.300    43.334
amax           44.217    44.235    44.218
emean           0.231     0.209     0.236
emin            0.194     0.166     0.193
emax            0.265     0.256     0.268
imean           7.346     9.316     6.702
imin            4.400     5.832     3.635
imax           10.124    11.722     9.802
excite_mean     0.267     0.267     0.267
fracstop        1.000     1.000     1.000
cjmean          3.012     3.013     3.013

libcent 0       177.8     178.2     178.6
libamp  0        44.8      63.8      35.3
libcent 1       171.8     178.0     159.1
libamp  1       112.5     120.0     115.8
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       289.4     212.9     298.5
kozaiamp        180.0     180.0     180.0