Orbit Fit and Astrometric record for 13SQ100

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: 13SQ100   
# Created Mon Dec 18 02:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   40 observations of   41
# Arc:   4.08y
# First observation: 2013/08/02
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000093   0.022930   0.000036   0.005262   0.023756   0.000000
# Chi-squared of fit:    24.77 DOF:   74 RMS:  0.14
# Min/Max residuals:    -0.42    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.446887E-05  2.311859E-02  3.372938E-06  5.327403E-03  2.393490E-02  6.037457E-03
# Covariance matrix:
  1.3493E-13 -3.2114E-14  7.9390E-16 -3.1766E-16  8.0795E-14 -6.3470E-15
 -3.2114E-14  1.7936E-13 -1.5283E-14  3.8159E-14  1.0647E-13  1.9775E-12
  7.9390E-16 -1.5283E-14  6.9535E-14 -3.5975E-14 -1.0147E-14 -2.0604E-13
 -3.1766E-16  3.8159E-14 -3.5975E-14  4.2570E-14  2.7346E-14  5.1434E-13
  8.0795E-14  1.0647E-13 -1.0147E-14  2.7346E-14  1.7492E-13  1.4293E-12
 -6.3470E-15  1.9775E-12 -2.0604E-13  5.1434E-13  1.4293E-12  2.6653E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.507111   14.646852    0.918198   -0.011459   -0.436597  2456507.005448
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:           49.21725 +/-     0.012
Argument of Peri:      277.63936 +/-     0.014
Long of Asc Node:       19.90160 +/-     0.000
Inclination:            12.95384 +/-     0.000
Eccentricity:         0.25194749 +/-    0.0002
Semi-Major Axis:     47.89605703 +/-    0.0063
Time of Perihelion: 2439948.0244 +/-       2.2
Perihelion:          35.82876557 +/-    0.0116
Aphelion:            59.96334848 +/-    0.0133
Period (y)              331.4804 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.06280886 +/-    0.0007
Ecliptic Y            9.78603278 +/-    0.0002
Ecliptic Z           -1.09867105 +/-    0.0000
Ecliptic XDOT         0.00000853 +/-    0.0000
Ecliptic YDOT         0.00273633 +/-    0.0000
Ecliptic ZDOT         0.00059115 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.22709778 +/-    0.0007
Geocenter to KBO     41.78000049 +/-    0.0007
# Hcoef:  8.09

The following table shows the complete astrometric record for 13SQ100. 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 (13SQ100) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.50467  00 56 16.522  +04 22 57.45  24.3r 13SQ100   568  C~2NKM      
2013 08  02.54741  00 56 16.442  +04 22 57.03  24.3r 13SQ100   568  C~2NKM      
2013 08  11.50367  00 55 59.982  +04 21 25.32  24.1r 13SQ100   568  C~2NKM      
2013 08  31.54522  00 55 02.455  +04 15 56.31        13SQ100   568  C~2NKM      
2013 08  31.58437  00 55 02.296  +04 15 54.93  23.8r 13SQ100   568  C~2NKM      
2013 08  31.58891  00 55 02.316  +04 15 55.36  23.9r 13SQ100   568  C~2NKM      
2013 09  01.46986  00 54 59.210  +04 15 37.62  24.1r 13SQ100   568  C~2NKM      
2013 09  05.41054  00 54 44.840  +04 14 15.33  24.1r 13SQ100   568  C~2NKM      
2013 09  05.44934  00 54 44.700  +04 14 14.58  23.8r 13SQ100   568  C~2NKM      
2013 09  29.33623  00 53 04.356  +04 04 45.02  24.5r 13SQ100   568  C~2NKM      
2013 09  29.34144  00 53 04.335  +04 04 45.05  24.1r 13SQ100   568  C~2NKM      
2013 09  29.38034  00 53 04.154  +04 04 44.15  23.7r 13SQ100   568  C~2NKM      
2013 09  29.42409  00 53 03.955  +04 04 43.00  23.9r 13SQ100   568  C~2NKM      
2013 10  02.41506  00 52 50.422  +04 03 27.20  24.1r 13SQ100   568  C~2NKM      
2013 10  04.49793  00 52 40.958  +04 02 34.20  24.0r 13SQ100   568  C~2NKM      
2013 10  04.50677  00 52 40.895  +04 02 33.89  24.3r 13SQ100   568  C~2NKM      
2013 11  27.26738  00 49 11.331  +03 44 22.24  24.4r 13SQ100   568  C~2NKM      
2013 11  27.31186  00 49 11.207  +03 44 21.51  24.1r 13SQ100   568  C~2NKM      
2013 12  05.22570  00 48 53.688  +03 43 11.88  24.6r 13SQ100   568  C~2NKM      
2014 07  23.55581  01 00 50.773  +05 10 57.69  24.4r 13SQ100   568  C~2NKM      
2014 07  27.53499  01 00 47.962  +05 10 45.67  24.3r 13SQ100   568  C~2NKM      
2014 08  22.61348  00 59 58.360  +05 06 20.38  24.6r 13SQ100   568  C~2NKM      
2014 08  28.44652  00 59 40.600  +05 04 40.73  24.1r 13SQ100   568  C~2NKM      
2014 08  28.45040  00 59 40.573  +05 04 40.75  24.2r 13SQ100   568  C~2NKM      
2014 10  23.33112  00 55 45.877  +04 42 56.96  24.0r 13SQ100   568  C~2NKM      
2014 10  23.38450  00 55 45.653  +04 42 55.69  23.9r 13SQ100   568  C~2NKM      
2014 10  25.45680  00 55 36.616  +04 42 07.19  24.4r 13SQ100   568  C~2NKM      
2014 10  27.24490  00 55 28.955  +04 41 26.07  24.6r 13SQ100   568  C~2NKM      
2014 10  27.30309  00 55 28.714  +04 41 24.68  24.2r 13SQ100   568  C~2NKM      
2014 10  27.36937  00 55 28.424  +04 41 23.21  24.1r 13SQ100   568  C~2NKM      
2014 10  29.25791  00 55 20.427  +04 40 40.46  24.5r 13SQ100   568  C~2NKM      
2014 11  19.20738  00 54 02.085  +04 33 58.09  24.7r 13SQ100   568  C~2NKM      
2014 11  19.27463  00 54 01.863  +04 33 57.07  24.2r 13SQ100   568  C~2NKM      
2014 11  25.22391  00 53 44.186  +04 32 33.18  24.1r 13SQ100   568  C~2NKM      
2014 12  17.31908  00 53 01.864  +04 29 52.73  25.0r 13SQ100   568  C~2NKM      
2015 01  17.26407  00 53 14.098  +04 33 40.30  24.7r 13SQ100   568  C~2NKM      
2015 08  20.53131  01 04 28.207  +05 53 45.87  24.3r 13SQ100   568  C~2NKM      
2015 12  07.36957  00 57 39.786  +05 17 31.69  24.4w 13SQ100   568  C~2NKM      
2017 08  25.51309  01 12 53.229  +07 24 09.22  24.5w 13SQ100   568  C~2NKM      
2017 08  30.45523  01 12 38.508  +07 22 53.69  24.3w 13SQ100   568  C~2NKM      
2017 08  30.50199  01 12 38.363  +07 22 53.01  24.3w 13SQ100   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     0.17       0.00     0.03
  2   0.0001     -1.27    -0.05       0.07     0.04
  3   0.0246   -263.77 (   0.14)     10.50 (   0.49)
  4   0.0795  -1184.55     0.08      39.34     0.06
  5   0.0796  -1187.28    -0.42      38.99    -0.38
  6   0.0796  -1186.83     0.29      39.27    -0.11
  7   0.0820  -1236.54     0.12      40.86    -0.01
  8   0.0928  -1466.61     0.23      48.02    -0.05
  9   0.0929  -1468.83     0.38      48.14    -0.02
 10   0.1583  -3073.70    -0.27     103.38    -0.11
 11   0.1583  -3073.98    -0.17     103.53     0.02
 12   0.1585  -3076.82    -0.17     103.75     0.11
 13   0.1586  -3080.01    -0.16     103.84     0.06
 14   0.1668  -3296.11    -0.04     112.30     0.10
 15   0.1725  -3447.23     0.20     118.24    -0.07
 16   0.1725  -3448.22    -0.13     118.32    -0.03
 17   0.3197  -6764.51     0.13     327.45     0.04
 18   0.3198  -6766.51    -0.08     327.50    -0.14
 19   0.3415  -7035.51     0.04     365.10    -0.06
 20   0.9721   4893.54    -0.20    1078.92     0.19
 21   0.9830   4850.13    -0.32    1083.97     0.05
 22   1.0544   4063.68     0.27    1124.06     0.39
 23   1.0703   3780.31     0.04    1134.17    -0.09
 24   1.0704   3779.95    -0.12    1134.35     0.07
 25   1.2233     40.38    -0.05    1283.44     0.03
 26   1.2235     36.80     0.14    1283.56    -0.06
 27   1.2292   -106.55    -0.10    1290.99     0.06
 28   1.2341   -228.07    -0.02    1297.29     0.08
 29   1.2342   -231.93     0.11    1297.40    -0.05
 30   1.2344   -236.50     0.10    1297.72     0.00
 31   1.2396   -363.29    -0.04    1304.47    -0.03
 32   1.2969  -1599.15     0.02    1386.08    -0.03
 33   1.2971  -1602.61    -0.03    1386.42     0.00
 34   1.3134  -1878.83     0.13    1411.28    -0.01
 35   1.3739  -2524.58    -0.09    1508.20     0.07
 36   1.4586  -2267.79    -0.02    1647.26     0.03
 37   2.0480   8881.64     0.04    2206.00    -0.07
 38   2.3460   2411.45    -0.04    2541.00    -0.00
 39   4.0630  17946.81     0.04    4362.38    -0.00
 40   4.0765  17713.78    -0.05    4375.36    -0.08
 41   4.0767  17711.51     0.05    4375.54    -0.04

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.

13SQ100    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.211    48.230    48.192
ecceobj         0.256     0.257     0.255
incobj         12.924    12.924    12.924
qmin           33.838    33.880    33.073
qmax           62.510    62.493    63.409
amean          47.797    47.797    47.797
amin           47.249    47.270    47.280
amax           48.429    48.451    48.449
emean           0.262     0.256     0.271
emin            0.231     0.218     0.238
emax            0.292     0.291     0.309
imean          12.736    12.982    12.391
imin           11.385    11.533    10.844
imax           13.972    14.332    13.794
excite_mean     0.343     0.341     0.346
fracstop        1.000     1.000     1.000
cjmean          3.001     3.003     2.999

libcent 0        79.3      80.3      77.3
libamp  0        34.6      35.7      28.6
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       178.6     180.2     156.8
kozaiamp        179.9     179.9     179.9