Orbit Fit and Astrometric record for 15FZ397

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: 15FZ397   
# Created Fri Nov  1 01:10:02 2024
# Orbit generated from Bernstein formalism
# Fitting     15 observations of     15
# Arc:   7.08d
# First observation: 2015/03/18
#  Last observation: 2015/03/25
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit:     0.43 DOF:     26 RMS:  0.03
# Min/Max residuals:    -0.07    0.06
# Exact a, adot, b, bdot, g, gdot:
  1.366224E-05  2.437971E-02  9.484478E-06  1.722273E-02  2.825838E-02  0.000000E+00
# Covariance matrix:
  7.1862E-11  1.2821E-07  3.4846E-13  3.9516E-11  2.0346E-08  0.0000E+00
  1.2821E-07  2.2967E-04  6.2409E-10  7.0772E-08  3.6439E-05  0.0000E+00
  3.4846E-13  6.2409E-10  2.6562E-13 -1.7194E-11  9.9019E-11  0.0000E+00
  3.9516E-11  7.0772E-08 -1.7194E-11  1.8429E-09  1.1229E-08  0.0000E+00
  2.0346E-08  3.6439E-05  9.9019E-11  1.1229E-08  5.7815E-06  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  2.9694E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.722277 -178.733378    0.067949   -0.012348   -0.989745  2457099.966191
# Heliocentric elements and errors
Epoch:              2457090.5000  =  2015/03/09
Mean Anomaly:          359.78374 +/-   290.260
Argument of Peri:      358.96883 +/-   356.813
Long of Asc Node:      182.15555 +/-     0.607
Inclination:            35.18071 +/-    16.725
Eccentricity:         0.03163706 +/-    0.5944
Semi-Major Axis:     37.56923423 +/-   19.9502
Time of Perihelion: 2457141.0278 +/-  236035.6
Perihelion:          36.38065411 +/-   29.5272
Aphelion:            38.75781435 +/-   30.3681
Period (y)              230.2803 +/-    183.43
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.37047960 +/-    3.0101
Ecliptic Y           -0.73617735 +/-    0.0663
Ecliptic Z           -0.44573942 +/-    0.0379
Ecliptic XDOT         0.00002777 +/-    0.0017
Ecliptic YDOT        -0.00236772 +/-    0.0013
Ecliptic ZDOT         0.00166860 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   36.38066007 +/-    3.0093
Geocenter to KBO     35.38773787 +/-    3.0111
# Hcoef:  8.62

The following table shows the complete astrometric record for 15FZ397. 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 (15FZ397) followed by the observatory code and reference code for the source of the astrometry.

2015 03  18.465413 12 03 29.960  -01 09 59.37  24.1r 15FZ397   568  C~2TuH      
2015 03  18.501246 12 03 29.776  -01 09 57.87  23.9r 15FZ397   568  C~2TuH      
2015 03  18.531859 12 03 29.617  -01 09 56.51  24.0r 15FZ397   568  C~2TuH      
2015 03  20.409007 12 03 20.148  -01 08 35.15  23.7i 15FZ397   568  C~2TuK      
2015 03  20.452470 12 03 19.923  -01 08 33.34  23.8i 15FZ397   568  C~2TuK      
2015 03  20.491408 12 03 19.725  -01 08 31.61  23.7i 15FZ397   568  C~2TuK      
2015 03  20.532815 12 03 19.511  -01 08 29.79  23.9i 15FZ397   568  C~2TuK      
2015 03  22.473979 12 03 09.698  -01 07 05.52  23.8i 15FZ397   568  C~2TuH      
2015 03  22.501868 12 03 09.558  -01 07 04.24  23.8i 15FZ397   568  C~2TuH      
2015 03  22.512930 12 03 09.500  -01 07 03.80  23.8i 15FZ397   568  C~2TuH      
2015 03  25.443007 12 02 54.702  -01 04 56.53  24.6g 15FZ397   568  C~2TuK      
2015 03  25.478471 12 02 54.521  -01 04 54.86  24.7g 15FZ397   568  C~2TuK      
2015 03  25.506759 12 02 54.370  -01 04 53.69  24.8g 15FZ397   568  C~2TuK      
2015 03  25.508915 12 02 54.364  -01 04 53.54  24.5g 15FZ397   568  C~2TuK      
2015 03  25.543291 12 02 54.185  -01 04 52.09  24.9g 15FZ397   568  C~2TuK      

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    -0.00       0.00     0.03
     2   0.0001     -3.13     0.02       0.28    -0.01
     3   0.0002     -5.86    -0.02       0.58     0.01
     4   0.0053   -168.51    -0.02      18.74     0.02
     5   0.0054   -172.32    -0.00      19.06    -0.06
     6   0.0055   -175.74     0.02      19.46    -0.01
     7   0.0057   -179.41    -0.00      19.86     0.01
     8   0.0110   -347.95    -0.01      38.63    -0.04
     9   0.0111   -350.38     0.01      38.97     0.05
    10   0.0111   -351.36     0.01      39.03     0.00
    11   0.0191   -605.60     0.04      67.51    -0.07
    12   0.0192   -608.76     0.01      67.97     0.06
    13   0.0193   -611.30    -0.05      68.14    -0.03
    14   0.0193   -611.44     0.00      68.24     0.05
    15   0.0194   -614.48    -0.02      68.50    -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.

15FZ397    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0