Orbit Fit and Astrometric record for 13SW100

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: 13SW100   
# Created Mon Dec 18 02:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   36 observations of   36
# Arc:   4.07y
# First observation: 2013/08/05
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000123   0.023211  -0.000001  -0.000384   0.023862   0.000000
# Chi-squared of fit:    13.60 DOF:   66 RMS:  0.11
# Min/Max residuals:    -0.31    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.520300E-05  2.307732E-02 -5.392739E-07 -3.825309E-04  2.385931E-02  7.588346E-04
# Covariance matrix:
  1.1714E-13 -4.9483E-14 -2.2178E-17  3.7934E-16  5.5169E-14 -2.4223E-13
 -4.9483E-14  2.1025E-13  1.5311E-15 -3.5573E-15  1.0352E-13  2.2243E-12
 -2.2178E-17  1.5311E-15  6.9633E-14 -2.6027E-14  1.1076E-15  1.8351E-14
  3.7934E-16 -3.5573E-15 -2.6027E-14  2.3292E-14 -2.0720E-15 -4.2363E-14
  5.5169E-14  1.0352E-13  1.1076E-15 -2.0720E-15  1.6156E-13  1.2879E-12
 -2.4223E-13  2.2243E-12  1.8351E-14 -4.2363E-14  1.2879E-12  2.6484E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.755787   12.959570    0.880298   -0.006672   -0.507848  2456509.993918
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:           53.37760 +/-     0.552
Argument of Peri:      163.23292 +/-     0.577
Long of Asc Node:      154.00942 +/-     0.011
Inclination:             1.21887 +/-     0.000
Eccentricity:         0.01214609 +/-    0.0002
Semi-Major Axis:     42.73505646 +/-    0.0024
Time of Perihelion: 2441370.7628 +/-     156.4
Perihelion:          42.21599271 +/-    0.0086
Aphelion:            43.25412020 +/-    0.0086
Period (y)              279.3731 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.53339600 +/-    0.0007
Ecliptic Y            8.65774526 +/-    0.0002
Ecliptic Z           -0.55282710 +/-    0.0000
Ecliptic XDOT        -0.00051581 +/-    0.0000
Ecliptic YDOT         0.00259921 +/-    0.0000
Ecliptic ZDOT        -0.00004490 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.42976732 +/-    0.0007
Geocenter to KBO     41.91235868 +/-    0.0007
# Hcoef:  8.22

The following table shows the complete astrometric record for 13SW100. 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 (13SW100) followed by the observatory code and reference code for the source of the astrometry.

2013 08  05.49314  00 48 52.105  +04 25 18.19  24.2r 13SW100   568  C~2NKN      
2013 08  05.54160  00 48 52.031  +04 25 17.43  25.3r 13SW100   568  C~2NKN      
2013 08  05.54632  00 48 52.015  +04 25 17.53  24.8r 13SW100   568  C~2NKN      
2013 08  08.47205  00 48 46.465  +04 24 38.97  24.7r 13SW100   568  C~2NKN      
2013 08  08.51087  00 48 46.391  +04 24 38.20  24.2r 13SW100   568  C~2NKN      
2013 08  31.55693  00 47 41.900  +04 17 25.99  24.6r 13SW100   568  C~2NKN      
2013 09  01.44270  00 47 38.804  +04 17 05.55  24.3r 13SW100   568  C~2NKN      
2013 09  01.48164  00 47 38.656  +04 17 04.65  24.2r 13SW100   568  C~2NKN      
2013 09  05.42217  00 47 24.295  +04 15 30.56  24.8r 13SW100   568  C~2NKN      
2013 09  29.35316  00 45 44.992  +04 04 47.76  24.5r 13SW100   568  C~2NKN      
2013 09  29.39201  00 45 44.824  +04 04 46.67  24.2r 13SW100   568  C~2NKN      
2013 09  29.43584  00 45 44.623  +04 04 45.23  24.2r 13SW100   568  C~2NKN      
2013 10  02.42685  00 45 31.331  +04 03 20.21        13SW100   568  C~2NKN      
2013 10  07.34703  00 45 09.417  +04 01 00.39  24.4r 13SW100   568  C~2NKN      
2013 11  27.27905  00 42 01.931  +03 41 26.99  24.5r 13SW100   568  C~2NKN      
2013 11  27.33088  00 42 01.809  +03 41 26.32  24.3r 13SW100   568  C~2NKN      
2013 12  05.23686  00 41 46.194  +03 39 53.30  24.4r 13SW100   568  C~2NKN      
2014 06  25.59278  00 53 46.326  +04 55 41.74  24.8r 13SW100   568  C~2NKN      
2014 06  26.59164  00 53 48.040  +04 55 51.11  24.8r 13SW100   568  C~2NKN      
2014 07  27.55990  00 53 59.382  +04 56 18.77  24.3r 13SW100   568  C~2NKN      
2014 08  24.48990  00 53 02.937  +04 49 49.97  24.1r 13SW100   568  C~2NKN      
2014 08  28.45816  00 52 50.525  +04 48 27.78  24.4r 13SW100   568  C~2NKN      
2014 08  28.46204  00 52 50.509  +04 48 27.86  24.2r 13SW100   568  C~2NKN      
2014 10  27.27001  00 48 42.417  +04 22 01.30  24.0r 13SW100   568  C~2NKN      
2014 10  29.26801  00 48 34.240  +04 21 10.30  24.1r 13SW100   568  C~2NKN      
2014 10  29.31783  00 48 34.050  +04 21 08.88  24.6r 13SW100   568  C~2NKN      
2014 11  24.26724  00 47 05.397  +04 12 02.67  24.1r 13SW100   568  C~2NKN      
2014 11  25.29355  00 47 02.724  +04 11 46.50  24.3r 13SW100   568  C~2NKN      
2015 01  18.24063  00 46 47.254  +04 10 59.86  24.3r 13SW100   568  C~2NKN      
2015 08  20.52724  00 58 11.428  +05 20 40.63  24.4r 13SW100   568  C~2NKN      
2015 12  07.36547  00 51 32.149  +04 38 50.38  24.8w 13SW100   568  C~2NKN      
2017 07  23.62323  01 08 43.135  +06 23 40.73  23.9w 13SW100   568  C~2NKN      
2017 08  25.54688  01 07 49.580  +06 17 27.67  24.4w 13SW100   568  C~2NKN      
2017 08  25.62549  01 07 49.336  +06 17 26.27  24.4w 13SW100   568  C~2NKN      
2017 08  30.48798  01 07 34.708  +06 15 50.85  24.4w 13SW100   568  C~2NKN      
2017 08  30.54049  01 07 34.539  +06 15 50.06  24.5w 13SW100   568  C~2NKN      

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     0.02       0.00     0.06
  2   0.0001     -1.32     0.18      -0.27    -0.18
  3   0.0001     -1.50     0.14      -0.08     0.01
  4   0.0082    -92.96     0.15      -3.34     0.15
  5   0.0083    -94.28     0.15      -3.62    -0.10
  6   0.0714  -1151.03    -0.23     -26.57    -0.03
  7   0.0738  -1201.64    -0.03     -27.37    -0.04
  8   0.0739  -1204.03    -0.12     -27.34     0.00
  9   0.0847  -1438.54    -0.20     -30.40     0.12
 10   0.1502  -3057.39     0.13     -43.82     0.02
 11   0.1503  -3060.13     0.23     -43.84    -0.01
 12   0.1504  -3063.46     0.11     -43.99    -0.17
 13   0.1586  -3279.80    -0.22     -44.77    -0.05
 14   0.1721  -3636.36    -0.31     -45.70     0.14
 15   0.3115  -6679.68     0.02     -30.79    -0.00
 16   0.3117  -6681.62     0.05     -30.70     0.03
 17   0.3333  -6933.40    -0.03     -24.97    -0.09
 18   0.8873   4762.41     0.07     -26.05     0.01
 19   0.8901   4789.67     0.01     -27.33     0.02
 20   0.9749   4956.75    -0.13     -67.46     0.11
 21   1.0513   4027.97    -0.04     -99.20     0.02
 22   1.0622   3825.02    -0.05    -103.09    -0.12
 23   1.0622   3824.83    -0.03    -102.92     0.05
 24   1.2259   -210.05     0.03    -125.06    -0.02
 25   1.2314   -342.55    -0.02    -124.49     0.08
 26   1.2316   -345.72     0.14    -124.69    -0.16
 27   1.3026  -1779.89     0.07    -111.84     0.17
 28   1.3054  -1823.02    -0.12    -111.17     0.13
 29   1.4531  -2054.37     0.06     -64.01    -0.10
 30   2.0398   8999.38    -0.06    -174.11     0.03
 31   2.3378   2520.84     0.01    -181.03    -0.04
 32   3.9648  19203.65    -0.04    -298.56     0.03
 33   4.0549  18316.02     0.08    -338.95    -0.12
 34   4.0551  18312.10    -0.08    -338.86     0.02
 35   4.0684  18072.23    -0.03    -343.80    -0.11
 36   4.0686  18069.58     0.10    -343.56     0.15

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.

13SW100    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.958    42.966    42.951
ecceobj         0.017     0.018     0.017
incobj          1.216     1.216     1.216
qmin           41.102    41.202    41.104
qmax           44.460    44.477    44.447
amean          42.717    42.725    42.710
amin           42.394    42.398    42.383
amax           43.051    43.047    43.041
emean           0.018     0.018     0.018
emin            0.000     0.000     0.000
emax            0.033     0.034     0.033
imean           2.357     2.353     2.360
imin            1.130     1.129     1.129
imax            3.151     3.144     3.159
excite_mean     0.045     0.045     0.045
fracstop        1.000     1.000     1.000
cjmean          3.084     3.084     3.084

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       183.0     182.9     183.3
kozaiamp        179.9     179.9     180.0