Orbit Fit and Astrometric record for 13AP183

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: 13AP183   
# Created Wed Dec 13 02:37:51 2017
# Orbit generated from Bernstein formalism
# Fitting   17 observations of   18
# Arc:   2.04y
# First observation: 2013/01/10
#  Last observation: 2015/01/24
Preliminary a, adot, b, bdot, g, gdot:
  -0.000037   0.021125  -0.000004   0.000494   0.021967   0.000000
# Chi-squared of fit:     6.22 DOF:   28 RMS:  0.11
# Min/Max residuals:    -0.31    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.475000E-05  2.136690E-02 -4.277558E-07  5.134957E-04  2.217882E-02  7.211427E-03
# Covariance matrix:
  2.7859E-13  4.5324E-13 -1.3494E-15  8.8223E-15  7.0243E-13  1.3499E-11
  4.5324E-13  2.8440E-12 -4.8641E-15  5.7673E-14  2.9639E-12  7.2474E-11
 -1.3494E-15 -4.8641E-15  1.3653E-13 -8.0173E-14 -6.5787E-15 -1.2202E-13
  8.8223E-15  5.7673E-14 -8.0173E-14  1.3348E-13  5.4932E-14  1.5923E-12
  7.0243E-13  2.9639E-12 -6.5787E-15  5.4932E-14  3.6236E-12  7.6783E-11
  1.3499E-11  7.2474E-11 -1.2202E-13  1.5923E-12  7.6783E-11  1.9521E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.122772  127.134716    0.282689   -0.051142   -0.938639  2456303.046368
# Heliocentric elements and errors
Epoch:              2456300.5000  =  2013/01/08
Mean Anomaly:           37.95582 +/-     0.103
Argument of Peri:      217.69871 +/-     0.096
Long of Asc Node:      193.11676 +/-     0.015
Inclination:             3.33914 +/-     0.000
Eccentricity:         0.37309423 +/-    0.0021
Semi-Major Axis:     58.32252638 +/-    0.0997
Time of Perihelion: 2439147.9438 +/-      15.4
Perihelion:          36.56272804 +/-    0.1383
Aphelion:            80.08232473 +/-    0.1843
Period (y)              445.4128 +/-      1.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.52027427 +/-    0.0023
Ecliptic Y           36.81378553 +/-    0.0031
Ecliptic Z           -2.45624552 +/-    0.0002
Ecliptic XDOT        -0.00264762 +/-    0.0000
Ecliptic YDOT        -0.00087969 +/-    0.0000
Ecliptic ZDOT         0.00001493 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.02883274 +/-    0.0028
Geocenter to KBO     45.08806300 +/-    0.0039
# Hcoef:  5.32

The following table shows the complete astrometric record for 13AP183. 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 (13AP183) followed by the observatory code and reference code for the source of the astrometry.

2013 01  10.54559  08 34 51.517  +15 27 57.04  22.4w 13AP183   F51  C~1vWv      
2013 01  10.55945  08 34 51.454  +15 27 57.13  22.1w 13AP183   F51  C~1vWv      
2013 01  10.57330  08 34 51.388  +15 27 57.28  22.0w 13AP183   F51  C~1vWv      
2013 01  17.48370  08 34 20.868  +15 29 45.52  22.1w 13AP183   F51  C~1vWv      
2013 01  17.49905  08 34 20.802  +15 29 45.68  22.0w 13AP183   F51  C~1vWv      
2013 01  17.51444  08 34 20.733  +15 29 46.04  22.1w 13AP183   F51  C~1vWv      
2013 01  17.52988  08 34 20.663  +15 29 46.29  22.2w 13AP183   F51  C~1vWv      
2013 02  10.42066  08 32 33.342  +15 36 33.39  22.1w 13AP183   F51  C~1vWv      
2013 02  10.43611  08 32 33.266  +15 36 33.58  22.1w 13AP183   F51  C~1vWv      
2013 02  10.45156  08 32 33.207  +15 36 33.90  22.0w 13AP183   F51  C~1vWv      
2013 02  10.46701  08 32 33.127  +15 36 34.10  22.0w 13AP183   F51  C~1vWv      
2014 05  21.26195  08 35 26.581  +15 33 39.86  22.1w 13AP183   F51  C~1vWv      
2014 05  21.26748  08 35 26.597  +15 33 39.85  22.2w 13AP183   F51  C~1vWv      
2014 05  21.27855  08 35 26.607  +15 33 39.36  21.8w 13AP183   F51  C~1vWv      
2015 01  24.50165  08 43 38.621  +14 58 02.83  21.8w 13AP183   F51  C~1vWv      
2015 01  24.51540  08 43 38.533  +14 58 03.17  21.8w 13AP183   F51  C~1vWv      
2015 01  24.52915  08 43 38.497  +14 58 03.30  21.6w 13AP183   F51  C~1vWv      
2015 01  24.54294  08 43 38.415  +14 58 04.32  22.0w 13AP183   F51  C~1vWv      

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     0.10       0.00     0.16
  2   0.0000     -0.90     0.10      -0.14     0.04
  3   0.0001     -1.87     0.05      -0.23    -0.03
  4   0.0190   -456.11    -0.13      -5.20    -0.01
  5   0.0190   -457.08    -0.06      -5.28    -0.08
  6   0.0191   -458.13    -0.07      -5.18     0.03
  7   0.0191   -459.18    -0.06      -5.19     0.04
  8   0.0845  -2062.62     0.06       5.30     0.02
  9   0.0846  -2063.73    -0.02       5.22    -0.08
 10   0.0846  -2064.64     0.09       5.31     0.00
 11   0.0847  -2065.81    -0.06       5.22    -0.10
 12   1.3572    405.24     0.05     458.42     0.14
 13   1.3572    405.47     0.06     458.47     0.17
 14   1.3572    405.73    -0.11     458.03    -0.31
 15   2.0368   7838.58     0.13     203.01     0.00
 16   2.0369   7837.26    -0.26     203.01     0.00
 17   2.0369   7836.72     0.13     203.00    -0.00
 18   2.0370   7835.30 (  -0.35)    203.68 (   0.68)

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.

13AP183    quality flag:2

Type:       8:3EEEEE  SCATNEAR  8:3EEEEE

axisobj        58.317    58.602    58.040
ecceobj         0.375     0.380     0.369
incobj          3.338     3.338     3.339
qmin           35.967    35.220    36.041
qmax           80.858    82.274    81.223
amean          57.901    57.813    57.901
amin           57.242    56.959    57.069
amax           58.750    59.055    58.935
emean           0.365     0.375     0.366
emin            0.354     0.359     0.355
emax            0.377     0.394     0.378
imean           4.573     3.720     3.701
imin            3.565     2.787     3.536
imax            5.175     4.536     3.853
excite_mean     0.374     0.380     0.372
fracstop        1.000     1.000     1.000
cjmean          3.094     3.084     3.095

libcent 0       179.5    -180.0     180.6
libamp  0        38.7    -180.0     140.5
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       244.0     177.5     180.1
kozaiamp         42.2     180.0     180.0