Orbit Fit and Astrometric record for 13JD65

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: 13JD65    
# Created Tue Dec 12 02:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   2.03y
# First observation: 2013/04/09
#  Last observation: 2015/04/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000153   0.031106   0.000002   0.005429   0.028473   0.000000
# Chi-squared of fit:     4.25 DOF:   44 RMS:  0.07
# Min/Max residuals:    -0.21    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.742315E-05  3.101214E-02  3.029865E-06  5.415921E-03  2.862584E-02  1.546731E-04
# Covariance matrix:
  1.6702E-13 -9.8992E-14 -1.6216E-15  1.8188E-15  1.0376E-13  8.4039E-14
 -9.8992E-14  6.1876E-13 -2.3235E-14  1.0519E-13  3.2323E-13  1.0995E-11
 -1.6216E-15 -2.3235E-14  1.3333E-13 -1.1069E-13 -1.9774E-14 -5.4382E-13
  1.8188E-15  1.0519E-13 -1.1069E-13  1.7483E-13  7.3764E-14  2.4728E-12
  1.0376E-13  3.2323E-13 -1.9774E-14  7.3764E-14  5.0680E-13  7.4073E-12
  8.4039E-14  1.0995E-11 -5.4382E-13  2.4728E-12  7.4073E-12  2.5867E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.495465 -121.771454    0.623794    0.116096   -0.777106  2456392.048058
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          353.21875 +/-     0.289
Argument of Peri:       48.03994 +/-     0.349
Long of Asc Node:      198.07040 +/-     0.002
Inclination:            13.02517 +/-     0.001
Eccentricity:         0.09097665 +/-    0.0001
Semi-Major Axis:     39.25485539 +/-    0.0036
Time of Perihelion: 2458082.6771 +/-      72.2
Perihelion:          35.68358009 +/-    0.0048
Aphelion:            42.82613070 +/-    0.0053
Period (y)              245.9508 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.13461341 +/-    0.0005
Ecliptic Y          -29.71031081 +/-    0.0007
Ecliptic Z            5.16090172 +/-    0.0001
Ecliptic XDOT         0.00254792 +/-    0.0000
Ecliptic YDOT        -0.00150877 +/-    0.0000
Ecliptic ZDOT         0.00051464 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.71373553 +/-    0.0007
Geocenter to KBO     34.93346695 +/-    0.0009
# Hcoef:  8.30

The following table shows the complete astrometric record for 13JD65. 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 (13JD65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.54728  15 51 36.396  -11 28 25.94  23.5r 13JD65    568  C~1XRf      
2013 04  10.51637  15 51 32.641  -11 28 01.61  24.1r 13JD65    568  C~1XRf      
2013 04  10.55690  15 51 32.457  -11 28 00.35  23.9r 13JD65    568  C~1XRf      
2013 04  19.56975  15 50 54.146  -11 24 11.19  23.8r 13JD65    568  C~1XRf      
2013 05  07.44791  15 49 25.049  -11 16 48.50  23.5r 13JD65    568  C~1XRf      
2013 05  07.49211  15 49 24.801  -11 16 47.42  23.3r 13JD65    568  C~1XRf      
2013 05  07.53231  15 49 24.586  -11 16 46.46  23.6r 13JD65    568  C~1XRf      
2013 05  09.49257  15 49 14.099  -11 16 00.40  23.7r 13JD65    568  C~1XRf      
2013 05  10.49969  15 49 08.673  -11 15 36.87  23.4r 13JD65    568  C~1XRf      
2013 06  04.38093  15 46 53.610  -11 07 16.95  23.5r 13JD65    568  C~1XRf      
2013 06  06.38422  15 46 43.139  -11 06 44.82  24.2r 13JD65    568  C~1XRf      
2014 02  24.63659  16 00 06.525  -11 48 23.60        13JD65    568  C~1XRf      
2014 02  28.61319  16 00 08.988  -11 47 18.44        13JD65    568  C~1XRf      
2014 04  04.50472  15 59 15.763  -11 34 50.68  23.4r 13JD65    568  C~1XRf      
2014 04  04.56390  15 59 15.571  -11 34 49.16  23.8r 13JD65    568  C~1XRf      
2014 04  04.57011  15 59 15.543  -11 34 49.32  23.8r 13JD65    568  C~1XRf      
2014 05  06.40386  15 56 55.020  -11 21 46.77  23.5r 13JD65    568  C~1XRf      
2014 05  06.47074  15 56 54.664  -11 21 45.22  23.9r 13JD65    568  C~1XRf      
2014 05  06.54679  15 56 54.254  -11 21 43.38  23.3r 13JD65    568  C~1XRf      
2014 05  22.48569  15 55 27.881  -11 15 55.95  23.4r 13JD65    568  C~1XRf      
2014 05  24.46712  15 55 16.975  -11 15 17.01  23.9r 13JD65    568  C~1XRf      
2014 07  01.36763  15 52 09.601  -11 07 06.76  23.7r 13JD65    568  C~1XRf      
2014 07  18.34104  15 51 14.191  -11 06 36.36  23.6r 13JD65    568  C~1XRf      
2015 04  20.54525  16 05 36.676  -11 31 57.82  23.5r 13JD65    568  C~1XRf      
2015 04  20.62472  16 05 36.319  -11 31 55.73  24.0r 13JD65    568  C~1XRf      

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    -0.01
  2   0.0027    -59.12     0.18      11.97    -0.16
  3   0.0028    -62.04    -0.16      12.62     0.01
  4   0.0274   -661.29    -0.02     115.91     0.00
  5   0.0764  -2036.24     0.08     266.63     0.04
  6   0.0765  -2040.03    -0.04     266.89     0.04
  7   0.0766  -2043.33     0.00     267.15     0.06
  8   0.0820  -2203.92     0.02     278.86     0.03
  9   0.0847  -2286.95    -0.01     284.62     0.14
 10   0.1529  -4336.03     0.01     341.98    -0.06
 11   0.1583  -4493.52    -0.01     339.79    -0.10
 12   0.8791   7582.32     0.01     403.65     0.06
 13   0.8900   7604.29    -0.12     474.92     0.01
 14   0.9855   6683.66     0.01    1045.15     0.02
 15   0.9857   6680.58     0.12    1046.05     0.12
 16   0.9857   6680.21     0.08    1045.81    -0.21
 17   1.0728   4495.18    -0.04    1381.06    -0.03
 18   1.0730   4489.73    -0.02    1381.48    -0.03
 19   1.0732   4483.45    -0.07    1382.02     0.02
 20   1.1169   3167.93     0.04    1455.04     0.05
 21   1.1223   3002.84     0.01    1459.32    -0.05
 22   1.2261    204.09    -0.02    1353.98     0.09
 23   1.2725   -599.16    -0.01    1209.44    -0.00
 24   2.0287  12139.98     0.02    2361.61    -0.08
 25   2.0290  12134.40    -0.03    2362.60     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.

13JD65    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.140    39.150    39.129
ecceobj         0.089     0.089     0.089
incobj         13.053    13.053    13.053
qmin           34.414    34.419    34.308
qmax           44.817    44.695    44.874
amean          39.459    39.459    39.459
amin           39.116    39.132    39.117
amax           39.822    39.814    39.840
emean           0.101     0.100     0.101
emin            0.077     0.075     0.077
emax            0.128     0.124     0.127
imean          13.524    13.523    13.526
imin           12.846    12.856    12.863
imax           14.258    14.254    14.251
excite_mean     0.255     0.255     0.255
fracstop        1.000     1.000     1.000
cjmean          2.978     2.978     2.978

libcent 0       178.9     179.5     181.4
libamp  0        49.4      43.9      54.3
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       181.5     180.8     180.5
kozaiamp        179.9     179.9     180.0