Orbit Fit and Astrometric record for 13FH28

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: 13FH28    
# Created Wed Apr 25 01:38:02 2018
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   31
# Arc:  14.06y
# First observation: 2001/02/20
#  Last observation: 2015/03/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000378   0.023365   0.000147  -0.005207   0.031605   0.000000
# Chi-squared of fit:   227.47 DOF:   56 RMS:  0.48
# Min/Max residuals:    -2.42    0.90
# Exact a, adot, b, bdot, g, gdot:
  1.479306E-05  2.161379E-02 -3.383550E-06 -4.846334E-03  2.352159E-02 -3.099289E-03
# Covariance matrix:
  4.8904E-13 -7.1493E-14 -2.1223E-15  7.6817E-15 -3.4426E-14 -1.1209E-13
 -7.1493E-14  1.5362E-13  8.8724E-15 -3.3317E-14  2.4253E-13  4.8501E-13
 -2.1223E-15  8.8724E-15  4.8039E-13 -3.9308E-14  1.2738E-14  2.8752E-14
  7.6817E-15 -3.3317E-14 -3.9308E-14  1.0563E-14 -5.2010E-14 -1.0757E-13
 -3.4426E-14  2.4253E-13  1.2738E-14 -5.2010E-14  6.9044E-13  7.5322E-13
 -1.1209E-13  4.8501E-13  2.8752E-14 -1.0757E-13  7.5322E-13  1.5663E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.473886  157.756792    0.098739   -0.059858   -0.983466  2451960.753891
# Heliocentric elements and errors
Epoch:              2451960.5000  =  2001/02/20
Mean Anomaly:          275.92014 +/-     0.053
Argument of Peri:      295.06891 +/-     0.036
Long of Asc Node:      322.80550 +/-     0.000
Inclination:            13.06518 +/-     0.000
Eccentricity:         0.13791341 +/-    0.0001
Semi-Major Axis:     43.28993475 +/-    0.0054
Time of Perihelion: 2476258.3767 +/-      14.7
Perihelion:          37.31967220 +/-    0.0052
Aphelion:            49.26019729 +/-    0.0066
Period (y)              284.8319 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -40.14875894 +/-    0.0014
Ecliptic Y           16.53256473 +/-    0.0006
Ecliptic Z           -2.57621768 +/-    0.0001
Ecliptic XDOT        -0.00059570 +/-    0.0000
Ecliptic YDOT        -0.00247453 +/-    0.0000
Ecliptic ZDOT        -0.00054102 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.49580944 +/-    0.0013
Geocenter to KBO     42.51413895 +/-    0.0015
# Hcoef:  5.75

The following table shows the complete astrometric record for 13FH28. 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 (13FH28) followed by the observatory code and reference code for the source of the astrometry.

2001 02  20.253148 10 32 32.10   +05 26 03.4         13FH28    645  C~1q9f      
2001 02  20.253981 10 32 32.10   +05 26 03.4         13FH28    645  C~1q9f      
2001 02  20.256470 10 32 32.09   +05 26 03.4         13FH28    645  C~1q9f      
2013 03  17.11892  11 22 49.094  -03 23 23.94  22.2r 13FH28    807  C~1Iuo      
2013 03  17.11892  11 22 49.06   -03 23 24.7   22.4r 13FH28    W84  C~2J9e      
2013 03  17.18090  11 22 48.821  -03 23 22.56        13FH28    807  C~1Iuo      
2013 03  17.18090  11 22 48.78   -03 23 23.0         13FH28    W84  C~2J9e      
2013 03  17.24550  11 22 48.511  -03 23 20.56        13FH28    807  C~1Iuo      
2013 03  17.24551  11 22 48.48   -03 23 21.2         13FH28    W84  C~2J9e      
2013 05  07.97598  11 19 41.171  -03 01 17.32  22.4r 13FH28    807  C~1Iuo      
2013 05  07.99657  11 19 41.113  -03 01 16.82        13FH28    807  C~1Iuo      
2013 05  08.99976  11 19 39.083  -03 00 57.82        13FH28    807  C~1Iuo      
2014 03  02.10588  11 28 32.20   -04 16 46.7   21.3g 13FH28    W84  C~2TH2      
2014 03  02.19826  11 28 31.78   -04 16 44.3   21.4g 13FH28    W84  C~2TH2      
2014 03  02.28869  11 28 31.38   -04 16 41.9   22.5g 13FH28    W84  C~2TH2      
2014 03  02.38460  11 28 30.90   -04 16 40.1   20.0g 13FH28    W84  C~2TH2      
2014 03  03.09565  11 28 27.70   -04 16 23.1   21.2g 13FH28    W84  C~2TH2      
2014 03  03.18750  11 28 27.28   -04 16 20.7   23.0g 13FH28    W84  C~2TH2      
2014 03  03.28772  11 28 26.80   -04 16 18.3   21.3g 13FH28    W84  C~2TH2      
2014 03  03.39109  11 28 26.33   -04 16 15.9   21.1g 13FH28    W84  C~2TH2      
2014 03  04.09687  11 28 23.11   -04 15 58.9   23.2g 13FH28    W84  C~2TH2      
2014 03  04.19051  11 28 22.69   -04 15 56.2   21.9g 13FH28    W84  C~2TH2      
2014 03  04.28102  11 28 22.27   -04 15 54.3   22.7g 13FH28    W84  C~2TH2      
2014 03  04.38505  11 28 21.77   -04 15 51.7   21.9g 13FH28    W84  C~2TH2      
2014 03  05.09456  11 28 18.56   -04 15 34.2   21.7g 13FH28    W84  C~2TH2      
2014 03  05.20449  11 28 18.03   -04 15 31.5   21.7g 13FH28    W84  C~2TH2      
2014 03  05.29775  11 28 17.61   -04 15 29.4   22.4g 13FH28    W84  C~2TH2      
2014 04  30.99871  11 24 28.127  -03 50 17.65  22.2r 13FH28    304  C~1Iuo      
2014 05  01.98785  11 24 25.470  -03 49 55.21        13FH28    304  C~1Iuo      
2015 03  16.18589  11 32 03.74   -04 58 02.6   21.8R 13FH28    G37  C~1N7m      
2015 03  16.25390  11 32 03.49   -04 57 59.3         13FH28    G37  C~1N7m      

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    -0.05       0.00     0.03
  2   0.0000      0.00     0.01       0.00     0.03
  3   0.0000     -0.14     0.05      -0.06    -0.02
  4  12.0681  55131.94    -0.12  -12849.11    -0.92
  5  12.0681  55132.14     0.07  -12848.19     0.00
  6  12.0682  55127.09     0.01  -12849.06    -0.86
  7  12.0682  55127.52     0.44  -12848.41    -0.20
  8  12.0684  55122.09     0.21  -12848.24    -0.02
  9  12.0684  55121.89     0.01  -12849.03    -0.81
 10  12.2101  51809.78    -0.17  -12637.54    -0.37
 11  12.2101  51808.72    -0.41  -12637.39    -0.35
 12  12.2129  51771.07    -0.11  -12630.64    -0.50
 13  13.0263  61590.73    -0.08  -14007.39     0.31
 14  13.0265  61583.39    -0.07  -14007.44     0.55
 15  13.0268  61576.36     0.11  -14007.37     0.90
 16  13.0271  61568.36    -0.26  -14008.34     0.21
 17  13.0290  61513.00     0.07  -14009.95     0.33
 18  13.0293  61505.66     0.07  -14010.00     0.55
 19  13.0295  61497.42    -0.14  -14010.38     0.46
 20  13.0298  61489.33     0.02  -14010.72     0.41
 21  13.0317  61433.67    -0.11  -14012.44     0.26
 22  13.0320  61426.21    -0.06  -14012.19     0.76
 23  13.0322  61419.09     0.09  -14012.72     0.47
 24  13.0325  61410.46    -0.19  -14013.03     0.43
 25  13.0345  61354.76     0.15  -14014.21     0.69
 26  13.0348  61345.64    -0.12  -14014.59     0.59
 27  13.0350  61338.43     0.20  -14014.93     0.48
 28  13.1903  57269.12     0.31  -13848.23    -0.17
 29  13.1930  57220.21     0.10  -13841.55    -0.28
 30  14.0642  65837.02    -0.24  -15232.35    -2.42
 31  14.0643  65831.82     0.21  -15230.52    -0.58

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.

13FH28    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.139    43.155    43.123
ecceobj         0.139     0.139     0.139
incobj         13.092    13.092    13.092
qmin           36.618    36.541    36.624
qmax           50.355    50.532    50.447
amean          43.346    43.348    43.328
amin           42.973    42.974    42.965
amax           43.741    43.759    43.742
emean           0.137     0.137     0.136
emin            0.122     0.122     0.122
emax            0.152     0.155     0.154
imean          14.345    14.358    14.371
imin           13.560    13.533    13.575
imax           15.003    15.013    15.016
excite_mean     0.283     0.283     0.283
fracstop        1.000     1.000     1.000
cjmean          2.997     2.996     2.996

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       182.4     179.2     179.2
kozaiamp        180.0     180.0     179.9