Orbit Fit and Astrometric record for 13SR100

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: 13SR100   
# Created Sat Dec 16 02:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   40 observations of   40
# Arc:   4.07y
# First observation: 2013/08/05
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000078   0.013812  -0.000018   0.006163   0.019061   0.000000
# Chi-squared of fit:    18.51 DOF:   74 RMS:  0.12
# Min/Max residuals:    -0.39    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.113693E-05  1.371807E-02  5.165627E-06  6.122451E-03  1.905059E-02 -9.534097E-04
# Covariance matrix:
  9.9071E-14 -7.4487E-15 -1.5896E-15  6.9827E-15  6.5966E-14  3.1786E-13
 -7.4487E-15  1.0365E-13 -1.2659E-14  4.4087E-14  8.6404E-14  1.9658E-12
 -1.5896E-15 -1.2659E-14  6.4957E-14 -3.0152E-14 -1.1912E-14 -3.0116E-13
  6.9827E-15  4.4087E-14 -3.0152E-14  4.4073E-14  4.3650E-14  1.0462E-12
  6.5966E-14  8.6404E-14 -1.1912E-14  4.3650E-14  1.6376E-13  1.9561E-12
  3.1786E-13  1.9658E-12 -3.0116E-13  1.0462E-12  1.9561E-12  4.6639E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.704545   12.543055    0.876652   -0.024234   -0.513592  2456509.986158
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:          210.96787 +/-     0.113
Argument of Peri:      151.30255 +/-     0.111
Long of Asc Node:       17.57988 +/-     0.000
Inclination:            24.16782 +/-     0.001
Eccentricity:         0.17975134 +/-    0.0002
Semi-Major Axis:     45.66224959 +/-    0.0035
Time of Perihelion: 2503156.9608 +/-      34.9
Perihelion:          37.45439913 +/-    0.0077
Aphelion:            53.87010005 +/-    0.0082
Period (y)              308.5632 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           51.87401543 +/-    0.0011
Ecliptic Y           10.64613045 +/-    0.0002
Ecliptic Z           -2.47654617 +/-    0.0001
Ecliptic XDOT        -0.00052745 +/-    0.0000
Ecliptic YDOT         0.00190288 +/-    0.0000
Ecliptic ZDOT         0.00088551 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   53.01308188 +/-    0.0011
Geocenter to KBO     52.49181478 +/-    0.0011
# Hcoef:  7.19

The following table shows the complete astrometric record for 13SR100. 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 (13SR100) followed by the observatory code and reference code for the source of the astrometry.

2013 08  05.48538  00 50 22.004  +02 27 51.77  24.5r 13SR100   568  C~2NKM      
2013 08  05.53383  00 50 21.920  +02 27 51.04  24.0r 13SR100   568  C~2NKM      
2013 08  08.46429  00 50 16.815  +02 27 21.50  24.5r 13SR100   568  C~2NKM      
2013 08  08.50311  00 50 16.713  +02 27 21.21        13SR100   568  C~2NKM      
2013 08  31.54913  00 49 19.948  +02 21 53.35  24.0r 13SR100   568  C~2NKM      
2013 08  31.59296  00 49 19.807  +02 21 52.62        13SR100   568  C~2NKM      
2013 08  31.59772  00 49 19.793  +02 21 52.74        13SR100   568  C~2NKM      
2013 08  31.61256  00 49 19.768  +02 21 52.42  24.0r 13SR100   568  C~2NKM      
2013 09  01.43491  00 49 17.249  +02 21 38.06  24.5r 13SR100   568  C~2NKM      
2013 09  01.47388  00 49 17.126  +02 21 37.37  24.1r 13SR100   568  C~2NKM      
2013 09  05.41441  00 49 04.752  +02 20 27.03  24.4r 13SR100   568  C~2NKM      
2013 09  05.45322  00 49 04.598  +02 20 26.23  24.2r 13SR100   568  C~2NKM      
2013 09  29.34540  00 47 39.740  +02 12 35.69  24.5r 13SR100   568  C~2NKM      
2013 09  29.38422  00 47 39.587  +02 12 34.79  24.5r 13SR100   568  C~2NKM      
2013 09  29.42805  00 47 39.430  +02 12 33.92  24.2r 13SR100   568  C~2NKM      
2013 10  02.41909  00 47 28.106  +02 11 32.86  23.9r 13SR100   568  C~2NKM      
2013 10  04.51065  00 47 20.139  +02 10 50.25  24.2r 13SR100   568  C~2NKM      
2013 10  09.47694  00 47 01.254  +02 09 10.36  24.4r 13SR100   568  C~2NKM      
2013 11  27.27126  00 44 25.762  +01 57 06.73  24.6r 13SR100   568  C~2NKM      
2013 11  27.31577  00 44 25.659  +01 57 06.33  24.1r 13SR100   568  C~2NKM      
2013 12  05.23284  00 44 10.811  +01 56 24.45  24.5r 13SR100   568  C~2NKM      
2014 06  25.58497  00 52 53.799  +03 06 04.99  24.7r 13SR100   568  C~2NKM      
2014 06  26.58383  00 52 54.917  +03 06 12.84  24.6r 13SR100   568  C~2NKM      
2014 07  23.57151  00 52 59.102  +03 07 01.27  24.1r 13SR100   568  C~2NKM      
2014 07  27.55192  00 52 55.517  +03 06 42.51  24.9r 13SR100   568  C~2NKM      
2014 11  24.29111  00 46 53.903  +02 35 21.28  24.4r 13SR100   568  C~2NKM      
2014 11  25.31746  00 46 51.501  +02 35 12.38  24.2r 13SR100   568  C~2NKM      
2014 12  17.34321  00 46 16.235  +02 33 47.96  24.5r 13SR100   568  C~2NKM      
2015 01  18.23551  00 46 25.586  +02 38 14.87  24.5r 13SR100   568  C~2NKM      
2015 08  20.51481  00 54 35.712  +03 40 44.46  24.3r 13SR100   568  C~2NKM      
2015 10  12.27435  00 51 37.361  +03 24 38.54  24.3r 13SR100   568  C~2NKM      
2015 10  12.35600  00 51 37.040  +03 24 36.91  23.5r 13SR100   568  C~2NKM      
2015 12  07.39898  00 48 49.304  +03 11 46.56  24.6w 13SR100   568  C~2NKM      
2015 12  31.22795  00 48 30.784  +03 12 13.98  24.4w 13SR100   568  C~2NKM      
2016 11  04.31217  00 52 33.681  +03 55 32.15  24.3w 13SR100   568  C~2NKM      
2016 11  04.37124  00 52 33.484  +03 55 31.24  24.4w 13SR100   568  C~2NKM      
2017 07  17.62072  01 00 06.078  +05 00 05.07        13SR100   568  C~2NKM      
2017 07  23.60916  01 00 03.381  +05 00 01.31        13SR100   568  C~2NKM      
2017 08  30.47857  00 58 53.593  +04 54 20.37  24.3w 13SR100   568  C~2NKM      
2017 08  30.53116  00 58 53.441  +04 54 19.41  24.1w 13SR100   568  C~2NKM      

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    -0.02
  2   0.0001     -1.44    -0.07      -0.18    -0.25
  3   0.0082    -83.41     0.08       2.33    -0.08
  4   0.0083    -84.94    -0.27       2.66     0.20
  5   0.0714   -996.21     0.06      31.29    -0.18
  6   0.0715   -998.44    -0.00      31.44    -0.13
  7   0.0715   -998.58     0.08      31.64     0.06
  8   0.0715   -999.05     0.35      31.49    -0.12
  9   0.0738  -1039.42    -0.05      32.94    -0.04
 10   0.0739  -1041.39    -0.07      33.02    -0.05
 11   0.0847  -1239.60     0.01      40.33    -0.04
 12   0.0848  -1242.04    -0.39      40.49     0.03
 13   0.1502  -2596.90    -0.04     101.73     0.17
 14   0.1503  -2599.36    -0.14     101.79     0.10
 15   0.1504  -2601.87     0.03     101.91     0.06
 16   0.1586  -2782.01     0.08     111.70     0.05
 17   0.1643  -2908.62    -0.08     118.92     0.09
 18   0.1779  -3208.32     0.06     137.07     0.31
 19   0.3115  -5638.16     0.11     378.23     0.02
 20   0.3117  -5639.74    -0.00     378.47    -0.03
 21   0.3333  -5861.24     0.11     426.64     0.14
 22   0.8873   2986.62    -0.04    1229.95    -0.10
 23   0.8901   3005.10     0.17    1230.69    -0.10
 24   0.9640   3081.69     0.28    1251.00    -0.14
 25   0.9749   3024.91    -0.06    1254.55    -0.13
 26   1.3027  -2698.30    -0.01    1627.17    -0.01
 27   1.3055  -2734.93    -0.22    1632.98     0.09
 28   1.3658  -3254.69    -0.10    1761.01     0.19
 29   1.4531  -3021.66     0.13    1952.32    -0.03
 30   2.0398   5200.95    -0.09    2555.14    -0.02
 31   2.1842   2364.01     0.06    2700.82    -0.08
 32   2.1845   2358.95    -0.01    2701.19    -0.05
 33   2.3379   -255.17    -0.04    2967.66     0.05
 34   2.4031   -500.06     0.04    3100.84    -0.00
 35   3.2494   3861.36    -0.02    4082.40    -0.02
 36   3.2495   3858.29     0.05    4082.70     0.00
 37   3.9484  11612.57     0.09    5038.41     0.03
 38   3.9647  11573.82    -0.11    5050.50    -0.01
 39   4.0684  10476.75     0.00    5138.33     0.11
 40   4.0686  10474.28    -0.01    5138.32    -0.06

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.

13SR100    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.852    45.862    45.842
ecceobj         0.174     0.174     0.174
incobj         24.088    24.088    24.088
qmin           36.368    36.419    36.324
qmax           55.322    55.331    55.409
amean          45.649    45.645    45.655
amin           45.258    45.243    45.262
amax           46.087    46.105    46.114
emean           0.185     0.185     0.186
emin            0.170     0.169     0.171
emax            0.201     0.201     0.202
imean          23.916    23.926    23.909
imin           23.451    23.460    23.439
imax           24.348    24.365    24.350
excite_mean     0.446     0.446     0.446
fracstop        1.000     1.000     1.000
cjmean          2.871     2.871     2.871

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       182.9     183.0     182.8
kozaiamp        180.0     180.0     180.0