Orbit Fit and Astrometric record for 13SA101

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: 13SA101   
# Created Sat Dec 16 02:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   31
# Arc:   2.34y
# First observation: 2013/08/05
#  Last observation: 2015/12/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000145   0.016367  -0.000004   0.000620   0.019829   0.000000
# Chi-squared of fit:    13.51 DOF:   56 RMS:  0.12
# Min/Max residuals:    -0.38    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.317639E-05  1.636423E-02  3.941303E-07  6.255638E-04  1.994048E-02  4.774931E-03
# Covariance matrix:
  1.7707E-13  2.4722E-14  1.6583E-15  4.0963E-15  1.7624E-13  5.2563E-12
  2.4722E-14  2.4459E-13  1.0775E-15  8.6237E-15  1.9895E-13  9.0807E-12
  1.6583E-15  1.0775E-15  8.5174E-14 -6.6920E-14  2.7937E-15  3.1252E-14
  4.0963E-15  8.6237E-15 -6.6920E-14  1.1924E-13  1.0891E-14  7.3568E-13
  1.7624E-13  1.9895E-13  2.7937E-15  1.0891E-14  3.5343E-13  1.2647E-11
  5.2563E-12  9.0807E-12  3.1252E-14  7.3568E-13  1.2647E-11  7.2477E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.053101   11.299687    0.865181   -0.028373   -0.532479  2456509.997828
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:           88.31434 +/-     0.241
Argument of Peri:      187.00548 +/-     0.148
Long of Asc Node:       65.32565 +/-     0.015
Inclination:             3.68555 +/-     0.001
Eccentricity:         0.26771912 +/-    0.0012
Semi-Major Axis:     47.75437975 +/-    0.0347
Time of Perihelion: 2426930.7976 +/-      73.9
Perihelion:          34.96961935 +/-    0.0648
Aphelion:            60.53914014 +/-    0.0740
Period (y)              330.0107 +/-      0.36
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           49.79954831 +/-    0.0015
Ecliptic Y            9.07155916 +/-    0.0003
Ecliptic Z           -2.67095703 +/-    0.0001
Ecliptic XDOT         0.00020000 +/-    0.0000
Ecliptic YDOT         0.00233160 +/-    0.0000
Ecliptic ZDOT         0.00005099 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   50.68946843 +/-    0.0014
Geocenter to KBO     50.14923412 +/-    0.0015
# Hcoef:  7.20

The following table shows the complete astrometric record for 13SA101. 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 (13SA101) followed by the observatory code and reference code for the source of the astrometry.

2013 08  05.49705  00 46 19.922  +01 39 35.03  23.8r 13SA101   568  C~2NKN      
2013 08  05.55029  00 46 19.847  +01 39 34.24  24.1r 13SA101   568  C~2NKN      
2013 08  31.56101  00 45 17.544  +01 31 54.32  23.9r 13SA101   568  C~2NKN      
2013 09  01.44658  00 45 14.807  +01 31 35.33  23.1r 13SA101   568  C~2NKN      
2013 09  01.48552  00 45 14.692  +01 31 34.41  24.2r 13SA101   568  C~2NKN      
2013 09  05.42605  00 45 02.188  +01 30 08.59  24.4r 13SA101   568  C~2NKN      
2013 09  05.46492  00 45 02.075  +01 30 07.63  24.0r 13SA101   568  C~2NKN      
2013 09  29.35704  00 43 36.544  +01 20 46.22  24.2r 13SA101   568  C~2NKN      
2013 09  29.39589  00 43 36.396  +01 20 45.14  23.7r 13SA101   568  C~2NKN      
2013 09  29.43972  00 43 36.228  +01 20 44.08  23.8r 13SA101   568  C~2NKN      
2013 10  02.43081  00 43 24.832  +01 19 32.38  23.9r 13SA101   568  C~2NKN      
2013 10  02.43568  00 43 24.813  +01 19 32.40  24.3r 13SA101   568  C~2NKN      
2013 10  05.31801  00 43 13.854  +01 18 23.39  24.5r 13SA101   568  C~2NKN      
2013 10  05.32294  00 43 13.840  +01 18 23.31  24.1r 13SA101   568  C~2NKN      
2013 10  05.35570  00 43 13.690  +01 18 22.74  24.3r 13SA101   568  C~2NKN      
2013 10  06.36409  00 43 09.845  +01 17 58.68  23.9r 13SA101   568  C~2NKN      
2013 10  07.35091  00 43 06.093  +01 17 35.27  24.0r 13SA101   568  C~2NKN      
2013 11  27.28847  00 40 25.348  +01 02 31.07  24.1r 13SA101   568  C~2NKN      
2013 11  27.33479  00 40 25.246  +01 02 30.70  24.1r 13SA101   568  C~2NKN      
2013 12  06.20469  00 40 10.228  +01 01 29.79  24.1r 13SA101   568  C~2NKO      
2014 06  25.59667  00 49 49.972  +02 06 26.47  24.9r 13SA101   568  C~2NKO      
2014 06  26.59553  00 49 51.225  +02 06 31.21  24.2r 13SA101   568  C~2NKO      
2014 07  24.59245  00 49 57.209  +02 05 32.31  24.1r 13SA101   568  C~2NKO      
2014 08  29.61851  00 48 48.357  +01 56 37.79  24.1r 13SA101   568  C~2NKO      
2014 10  23.32278  00 45 32.863  +01 35 48.46  24.0r 13SA101   568  C~2NKO      
2014 11  24.27501  00 43 56.470  +01 27 01.74  24.5r 13SA101   568  C~2NKO      
2014 11  25.30131  00 43 54.199  +01 26 51.17  24.0r 13SA101   568  C~2NKO      
2014 12  17.33921  00 43 22.202  +01 24 55.03  23.9r 13SA101   568  C~2NKO      
2015 01  17.23338  00 43 36.957  +01 28 42.04  24.4r 13SA101   568  C~2NKO      
2015 08  20.53545  00 52 35.168  +02 23 14.71  24.4r 13SA101   568  C~2NKO      
2015 12  07.36135  00 46 54.601  +01 49 00.30  24.3w 13SA101   568  C~2NKO      

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    -0.04       0.00     0.02
  2   0.0001     -1.34     0.15      -0.29    -0.14
  3   0.0714  -1040.95     0.33     -59.13     0.10
  4   0.0738  -1086.15    -0.07     -60.60     0.14
  5   0.0739  -1088.09     0.01     -60.77     0.01
  6   0.0847  -1294.22    -0.11     -66.59     0.16
  7   0.0848  -1296.16     0.07     -66.81    -0.03
  8   0.1502  -2696.26     0.01     -82.89     0.06
  9   0.1503  -2698.72    -0.02     -83.02    -0.09
 10   0.1504  -2701.46    -0.01     -83.01    -0.10
 11   0.1586  -2886.82    -0.23     -82.28     0.08
 12   0.1586  -2887.07    -0.17     -82.15     0.21
 13   0.1665  -3065.35     0.12     -81.50    -0.19
 14   0.1665  -3065.57     0.21     -81.49    -0.19
 15   0.1666  -3067.87    -0.03     -81.13     0.14
 16   0.1694  -3130.36    -0.05     -80.76    -0.01
 17   0.1721  -3191.31     0.05     -80.34    -0.15
 18   0.3115  -5764.90     0.01      29.15    -0.09
 19   0.3117  -5766.45    -0.07      29.41    -0.01
 20   0.3360  -5997.77    -0.09      61.38     0.07
 21   0.8873   3528.49    -0.38     255.71    -0.13
 22   0.8901   3547.64    -0.01     252.75     0.10
 23   0.9667   3607.31     0.11     163.53     0.07
 24   1.0654   2448.20    -0.04      73.65    -0.00
 25   1.2151   -738.07     0.04      66.78     0.05
 26   1.3026  -2274.48    -0.03     146.15    -0.17
 27   1.3054  -2309.96    -0.01     149.72     0.01
 28   1.3658  -2797.10     0.11     230.18    -0.01
 29   1.4503  -2504.71     0.08     352.76     0.05
 30   2.0398   6203.22     0.11     219.76     0.03
 31   2.3378    699.30    -0.07     317.58     0.00

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.

13SA101    quality flag:3

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

axisobj        48.030    48.131    47.930
ecceobj         0.268     0.271     0.264
incobj          3.685     3.685     3.685
qmin           34.113    33.889    33.979
qmax           62.069    62.626    62.358
amean          47.798    47.798    47.797
amin           47.274    47.241    47.250
amax           48.405    48.481    48.470
emean           0.268     0.275     0.272
emin            0.251     0.259     0.256
emax            0.284     0.292     0.288
imean           3.464     2.722     2.583
imin            2.729     2.220     1.901
imax            4.374     3.085     3.051
excite_mean     0.275     0.279     0.276
fracstop        1.000     1.000     1.000
cjmean          3.053     3.050     3.052

libcent 0        76.1      78.8      78.2
libamp  0        22.7      33.4      30.6
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       178.5     174.9     152.0
kozaiamp        180.0     179.8     179.9