Orbit Fit and Astrometric record for 15FM345

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: 15FM345   
# Created Sat Oct 21 01:38:34 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:   4.15y
# First observation: 2011/04/30
#  Last observation: 2015/06/22
Preliminary a, adot, b, bdot, g, gdot:
   0.000041   0.023679  -0.000018  -0.002388   0.024813   0.000000
# Chi-squared of fit:    14.26 DOF:   30 RMS:  0.16
# Min/Max residuals:    -0.39    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.576669E-05  2.379462E-02 -1.306875E-06 -2.417548E-03  2.443185E-02  5.729043E-04
# Covariance matrix:
  3.6615E-13 -2.6049E-13 -6.7045E-15  1.8373E-14 -1.6234E-13 -1.7790E-12
 -2.6049E-13  5.2117E-13  1.9614E-14 -5.1998E-14  3.3913E-13  4.8655E-12
 -6.7045E-15  1.9614E-14  2.9791E-13 -8.3481E-14  8.6753E-15  1.9438E-13
  1.8373E-14 -5.1998E-14 -8.3481E-14  3.6352E-14 -2.9350E-14 -5.1559E-13
 -1.6234E-13  3.3913E-13  8.6753E-15 -2.9350E-14  6.4235E-13  3.3814E-12
 -1.7790E-12  4.8655E-12  1.9438E-13 -5.1559E-13  3.3814E-12  4.8270E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   16.526112 -146.536276   -0.104614    0.285814   -0.963459  2455681.898056
# Heliocentric elements and errors
Epoch:              2455680.5000  =  2011/04/29
Mean Anomaly:           62.62292 +/-     0.242
Argument of Peri:       43.67690 +/-     0.277
Long of Asc Node:      103.42084 +/-     0.001
Inclination:            17.13328 +/-     0.000
Eccentricity:         0.02960138 +/-    0.0003
Semi-Major Axis:     42.43918703 +/-    0.0045
Time of Perihelion: 2438114.2184 +/-      67.9
Perihelion:          41.18292847 +/-    0.0122
Aphelion:            43.69544560 +/-    0.0123
Period (y)              276.4769 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -33.51118116 +/-    0.0011
Ecliptic Y          -22.27888327 +/-    0.0007
Ecliptic Z           11.64266796 +/-    0.0004
Ecliptic XDOT         0.00135275 +/-    0.0000
Ecliptic YDOT        -0.00229493 +/-    0.0000
Ecliptic ZDOT        -0.00024143 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.89152205 +/-    0.0009
Geocenter to KBO     40.93017556 +/-    0.0013
# Hcoef:  6.12

The following table shows the complete astrometric record for 15FM345. 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 (15FM345) followed by the observatory code and reference code for the source of the astrometry.

2011 04  30.39729  14 27 10.355  +02 54 22.69  22.4w 15FM345   F51  C~1vYV      
2011 04  30.41082  14 27 10.293  +02 54 22.97  22.4w 15FM345   F51  C~1vYV      
2011 04  30.42589  14 27 10.224  +02 54 23.27  22.3w 15FM345   F51  C~1vYV      
2011 04  30.43952  14 27 10.172  +02 54 23.61  22.3w 15FM345   F51  C~1vYV      
2013 04  17.50621  14 38 00.441  +01 39 35.82  22.3w 15FM345   F51  C~1vYV      
2013 04  17.52137  14 38 00.365  +01 39 35.69  22.1w 15FM345   F51  C~1vYV      
2013 04  17.53653  14 38 00.310  +01 39 36.72  22.3w 15FM345   F51  C~1vYV      
2013 04  17.55169  14 38 00.227  +01 39 36.99  22.3w 15FM345   F51  C~1vYV      
2015 03  21.52649  14 49 37.343  +00 16 51.24  22.2w 15FM345   F51  C~1vYV      
2015 03  21.53938  14 49 37.317  +00 16 51.72  22.1w 15FM345   F51  C~1vYV      
2015 03  21.55205  14 49 37.262  +00 16 52.14  22.3w 15FM345   F51  C~1vYV      
2015 03  21.56483  14 49 37.225  +00 16 52.36  22.4w 15FM345   F51  C~1vYV      
2015 04  13.45012  14 48 12.039  +00 27 33.43  22.2w 15FM345   F51  C~1vYV      
2015 04  13.46471  14 48 11.975  +00 27 34.07  22.4w 15FM345   F51  C~1vYV      
2015 04  13.47933  14 48 11.929  +00 27 34.23  22.5w 15FM345   F51  C~1vYV      
2015 06  22.32621  14 43 19.875  +00 41 19.50  22.1i 15FM345   F51  C~1vYV      
2015 06  22.33942  14 43 19.835  +00 41 19.51  21.8i 15FM345   F51  C~1vYV      
2015 06  22.36597  14 43 19.750  +00 41 19.77  21.5i 15FM345   F51  C~1vYV      

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    -0.05
  2   0.0000     -0.97    -0.05      -0.04    -0.04
  3   0.0001     -2.04    -0.02      -0.11    -0.04
  4   0.0001     -2.89     0.14      -0.04     0.07
  5   1.9661  10691.29    -0.00    -984.46     0.13
  6   1.9661  10690.25     0.07    -984.97    -0.39
  7   1.9662  10689.13     0.05    -984.27     0.29
  8   1.9662  10687.86    -0.11    -984.43     0.11
  9   3.8908  22278.90     0.05   -2174.17    -0.18
 10   3.8909  22278.36     0.22   -2173.85    -0.01
 11   3.8909  22277.43    -0.01   -2173.73    -0.03
 12   3.8909  22276.83     0.08   -2173.70    -0.16
 13   3.9536  20842.50    -0.21   -1995.73     0.05
 14   3.9536  20841.37    -0.31   -1995.45     0.29
 15   3.9537  20840.66     0.02   -1995.53     0.17
 16   4.1449  16400.43     0.17   -2684.17    -0.24
 17   4.1449  16399.86     0.12   -2684.36    -0.16
 18   4.1450  16398.56    -0.13   -2684.54     0.22

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.

15FM345    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.347    42.361    42.334
ecceobj         0.029     0.029     0.029
incobj         17.135    17.135    17.135
qmin           40.583    40.565    40.560
qmax           44.897    44.883    44.860
amean          42.638    42.652    42.624
amin           42.316    42.322    42.294
amax           42.962    42.980    42.954
emean           0.032     0.033     0.032
emin            0.020     0.021     0.020
emax            0.046     0.044     0.045
imean          15.415    15.416    15.415
imin           14.956    14.955    14.945
imax           15.971    15.971    15.970
excite_mean     0.268     0.268     0.268
fracstop        1.000     1.000     1.000
cjmean          3.000     3.000     3.000

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       184.2     184.1     183.8
kozaiamp        180.0     180.0     180.0