Orbit Fit and Astrometric record for 13FB28

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: 13FB28    
# Created Tue Dec 19 02:37:53 2017
# Orbit generated from Bernstein formalism
# Fitting   48 observations of   49
# Arc:  15.06y
# First observation: 2001/02/20
#  Last observation: 2016/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.002749   0.023028   0.000709  -0.006115   0.024789   0.000000
# Chi-squared of fit:    50.31 DOF:   90 RMS:  0.18
# Min/Max residuals:    -0.44    0.42
# Exact a, adot, b, bdot, g, gdot:
  1.528752E-05  2.248458E-02 -3.827119E-06 -5.971286E-03  2.367367E-02  7.161760E-04
# Covariance matrix:
  4.8335E-13 -7.5062E-14 -1.6907E-14  1.1247E-14 -4.1676E-14 -1.2550E-13
 -7.5062E-14  3.1358E-14  1.1230E-14 -7.5638E-15  3.2842E-14  8.4343E-14
 -1.6907E-14  1.1230E-14  4.2492E-13 -3.5763E-14  8.5193E-15  3.3605E-14
  1.1247E-14 -7.5638E-15 -3.5763E-14  4.7507E-15 -7.7612E-15 -2.2400E-14
 -4.1676E-14  3.2842E-14  8.5193E-15 -7.7612E-15  1.3686E-13  8.5351E-14
 -1.2550E-13  8.4343E-14  3.3605E-14 -2.2400E-14  8.5351E-14  2.4992E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.976230  158.568754    0.112684   -0.085492   -0.980067  2451960.754315
# Heliocentric elements and errors
Epoch:              2451960.5000  =  2001/02/20
Mean Anomaly:           26.15160 +/-     0.023
Argument of Peri:      168.60036 +/-     0.026
Long of Asc Node:      320.70135 +/-     0.000
Inclination:            15.62709 +/-     0.000
Eccentricity:         0.06592240 +/-    0.0000
Semi-Major Axis:     45.89246929 +/-    0.0028
Time of Perihelion: 2443711.4038 +/-       7.1
Perihelion:          42.86712763 +/-    0.0031
Aphelion:            48.91781096 +/-    0.0034
Period (y)              310.8997 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -40.04273062 +/-    0.0006
Ecliptic Y           15.84489340 +/-    0.0002
Ecliptic Z           -3.66424003 +/-    0.0001
Ecliptic XDOT        -0.00097947 +/-    0.0000
Ecliptic YDOT        -0.00240899 +/-    0.0000
Ecliptic ZDOT        -0.00069497 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.21929635 +/-    0.0006
Geocenter to KBO     42.24102664 +/-    0.0007
# Hcoef:  5.88

The following table shows the complete astrometric record for 13FB28. 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 (13FB28) followed by the observatory code and reference code for the source of the astrometry.

2001 02  20.253572 10 33 19.20   +03 44 19.9   22.0V 13FB28    645  C~1q9f      
2001 02  20.254402 10 33 19.20   +03 44 19.9   21.9V 13FB28    645  C~1q9f      
2001 02  20.256889 10 33 19.19   +03 44 19.9   23.1V 13FB28    645  C~1q9f      
2011 03  30.36306  11 13 01.280  -03 55 26.65  22.3w 13FB28    F51  C~1vWx      
2011 03  30.37634  11 13 01.212  -03 55 26.42  22.2w 13FB28    F51  C~1vWx      
2011 03  30.39078  11 13 01.155  -03 55 25.90  22.2w 13FB28    F51  C~1vWx      
2011 03  30.40406  11 13 01.105  -03 55 25.67  22.2w 13FB28    F51  C~1vWx      
2011 12  06.62599  11 22 25.336  -04 55 41.23  22.3w 13FB28    F51  C~1vWx      
2011 12  06.63064  11 22 25.344  -04 55 41.57  22.3w 13FB28    F51  C~1vWx      
2011 12  06.63529  11 22 25.364  -04 55 41.76  22.5w 13FB28    F51  C~1vWx      
2011 12  06.63994  11 22 25.352  -04 55 42.03  22.4w 13FB28    F51  C~1vWx      
2013 03  17.11357  11 22 22.181  -05 34 40.65        13FB28    807  C~14Qh      
2013 03  17.11357  11 22 22.17   -05 34 41.5   22.3r 13FB28    W84  C~2J9e      
2013 03  17.17578  11 22 21.893  -05 34 39.27  21.8r 13FB28    807  C~14Qh      
2013 03  17.17579  11 22 21.89   -05 34 39.8         13FB28    W84  C~2J9e      
2013 03  17.23999  11 22 21.590  -05 34 37.54        13FB28    807  C~14Qh      
2013 03  17.23999  11 22 21.59   -05 34 38.2         13FB28    W84  C~2J9e      
2013 04  05.32917  11 21 00.921  -05 26 03.64  22.3w 13FB28    F51  C~1vWx      
2013 04  05.35790  11 21 00.787  -05 26 03.00  22.3w 13FB28    F51  C~1vWx      
2013 04  05.37231  11 21 00.724  -05 26 02.26  22.5w 13FB28    F51  C~1vWx      
2013 05  07.97363  11 19 20.845  -05 12 30.94        13FB28    807  C~14Qh      
2013 05  07.99424  11 19 20.798  -05 12 30.61        13FB28    807  C~14Qh      
2013 05  08.99453  11 19 18.833  -05 12 09.93  21.9r 13FB28    807  C~14Qh      
2013 05  09.03162  11 19 18.746  -05 12 09.01        13FB28    807  C~14Qh      
2014 02  28.45993  11 27 51.083  -06 27 54.89  22.2w 13FB28    F51  C~1vWx      
2014 02  28.47200  11 27 51.037  -06 27 54.72  22.2w 13FB28    F51  C~1vWx      
2014 02  28.48407  11 27 50.979  -06 27 54.47  22.4w 13FB28    F51  C~1vWx      
2014 02  28.49619  11 27 50.930  -06 27 54.15  22.2w 13FB28    F51  C~1vWx      
2014 03  24.41293  11 26 05.159  -06 18 09.20  22.6w 13FB28    F51  C~1vWx      
2014 03  24.42520  11 26 05.105  -06 18 08.60  22.5w 13FB28    F51  C~1vWx      
2014 03  24.43752  11 26 05.069  -06 18 08.19  22.7w 13FB28    F51  C~1vWx      
2014 04  30.99640  11 23 49.186  -06 01 29.49        13FB28    304  C~14Qh      
2014 05  01.98282  11 23 46.666  -06 01 06.12  21.9r 13FB28    304  C~14Qh      
2014 05  24.26280  11 23 08.553  -05 53 48.21  22.5w 13FB28    F51  C~1vWx      
2014 05  24.27607  11 23 08.544  -05 53 48.29  22.3w 13FB28    F51  C~1vWx      
2014 05  24.28934  11 23 08.538  -05 53 47.85  22.2w 13FB28    F51  C~1vWx      
2014 05  24.30263  11 23 08.511  -05 53 47.62  22.6w 13FB28    F51  C~1vWx      
2015 02  24.44462  11 32 23.676  -07 15 36.05  22.4w 13FB28    F51  C~1vWx      
2015 02  24.45887  11 32 23.603  -07 15 35.85  22.5w 13FB28    F51  C~1vWx      
2015 02  24.47314  11 32 23.544  -07 15 35.53  22.2w 13FB28    F51  C~1vWx      
2015 02  24.48744  11 32 23.488  -07 15 35.33  22.2w 13FB28    F51  C~1vWx      
2015 02  25.46530  11 32 19.336  -07 15 16.53  22.4w 13FB28    F51  C~1vWx      
2015 02  25.47925  11 32 19.291  -07 15 16.26  22.2w 13FB28    F51  C~1vWx      
2015 02  25.49320  11 32 19.221  -07 15 16.44  22.4w 13FB28    F51  C~1vWx      
2015 03  22.39727  11 30 29.452  -07 05 33.12  22.4w 13FB28    F51  C~1vWx      
2015 03  22.42499  11 30 29.329  -07 05 32.67  22.2w 13FB28    F51  C~1vWx      
2015 03  22.43881  11 30 29.283  -07 05 31.99  22.5w 13FB28    F51  C~1vWx      
2016 03  13.24393  11 35 21.73   -07 55 19.4   22.5R 13FB28    G37  C~1pQU      
2016 03  13.29283  11 35 21.52   -07 55 18.2         13FB28    G37  C~1pQU      

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    -0.06       0.00    -0.03
  2   0.0000      0.00     0.00       0.00    -0.03
  3   0.0000     -0.14     0.05      -0.06    -0.07
  4  10.1030  44119.90    -0.08  -12490.53     0.10
  5  10.1030  44118.82    -0.21  -12490.70    -0.09
  6  10.1030  44117.78    -0.21  -12490.52     0.05
  7  10.1031  44116.97    -0.08  -12490.58    -0.04
  8  10.7909  53831.42    -0.07  -12803.23     0.14
  9  10.7909  53831.67     0.07  -12803.51    -0.07
 10  10.7909  53832.05     0.33  -12803.58    -0.06
 11  10.7909  53831.98     0.14  -12803.91    -0.32
 12  12.0681  54728.01    -0.00  -15088.35    -0.19
 13  12.0681  54727.83 (  -0.18) -15087.46 (   0.69)
 14  12.0682  54723.00    -0.21  -15087.73     0.42
 15  12.0682  54723.17    -0.04  -15088.26    -0.11
 16  12.0684  54718.07    -0.17  -15088.38    -0.23
 17  12.0684  54717.81    -0.44  -15087.74     0.41
 18  12.1207  53315.21     0.31  -15039.08     0.19
 19  12.1208  53312.97     0.10  -15039.20    -0.06
 20  12.1208  53311.74    -0.12  -15038.84     0.25
 21  12.2100  51510.94     0.23  -14810.84     0.31
 22  12.2101  51510.12     0.20  -14810.79     0.19
 23  12.2128  51472.87     0.24  -14801.77     0.31
 24  12.2129  51471.21    -0.01  -14801.36     0.40
 25  13.0218  60944.22    -0.04  -16373.84    -0.08
 26  13.0218  60943.46     0.11  -16373.93    -0.12
 27  13.0218  60942.49     0.04  -16374.00    -0.15
 28  13.0219  60941.62     0.09  -16373.96    -0.06
 29  13.0874  59112.99     0.01  -16388.39    -0.34
 30  13.0874  59111.93    -0.10  -16388.10    -0.07
 31  13.0874  59111.23     0.15  -16387.90     0.10
 32  13.1903  56673.37     0.26  -16167.82     0.05
 33  13.1930  56626.32     0.42  -16159.06     0.16
 34  13.2540  55881.17    -0.12  -15944.55     0.07
 35  13.2540  55881.07     0.04  -15944.68    -0.18
 36  13.2540  55880.80     0.04  -15944.28     0.08
 37  13.2541  55880.30    -0.20  -15944.21     0.02
 38  14.0101  66257.91     0.09  -17683.25    -0.00
 39  14.0101  66256.72    -0.06  -17683.45    -0.14
 40  14.0102  66255.68    -0.04  -17683.46    -0.07
 41  14.0102  66254.74     0.07  -17683.57    -0.11
 42  14.0129  66183.56    -0.14  -17687.90     0.04
 43  14.0129  66182.76     0.10  -17687.88     0.13
 44  14.0130  66181.77     0.14  -17688.45    -0.37
 45  14.0812  64268.96    -0.34  -17718.40    -0.14
 46  14.0812  64266.90    -0.21  -17718.64    -0.42
 47  14.0813  64265.92    -0.10  -17718.22    -0.02
 48  15.0582  69984.84    -0.16  -19071.34     0.06
 49  15.0583  69981.10     0.01  -19071.30     0.13

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.

13FB28    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.712    45.720    45.703
ecceobj         0.062     0.063     0.062
incobj         15.656    15.657    15.656
qmin           42.240    42.235    42.202
qmax           49.791    49.822    49.769
amean          45.895    45.903    45.886
amin           45.533    45.542    45.526
amax           46.280    46.287    46.271
emean           0.065     0.065     0.065
emin            0.054     0.055     0.054
emax            0.076     0.077     0.076
imean          16.895    16.895    16.895
imin           16.580    16.583    16.582
imax           17.149    17.155    17.149
excite_mean     0.298     0.298     0.298
fracstop        1.000     1.000     1.000
cjmean          3.013     3.013     3.013

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       188.3     188.1     188.2
kozaiamp        180.0     180.0     180.0