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 Sat Nov 17 02:09:20 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   30 observations of   30
# Arc:  12.00y
# First observation: 2003/01/25
#  Last observation: 2015/01/24
# Chi-squared of fit:    20.19 DOF:   54 RMS:  0.15
# Min/Max residuals:    -0.32    0.66
# Exact a, adot, b, bdot, g, gdot:
  1.716583E-05  2.467883E-02  8.631842E-07  2.694071E-04  2.381808E-02  6.922751E-03
# Covariance matrix:
  1.4170E-13 -4.8357E-14  1.5942E-16 -3.7118E-16 -4.7652E-14 -1.3882E-13
 -4.8357E-14  1.4135E-13 -6.1545E-16  1.7391E-15  1.1343E-14  5.5230E-13
  1.5942E-16 -6.1545E-16  1.2727E-13 -1.2158E-14 -4.5564E-17 -2.4400E-15
 -3.7118E-16  1.7391E-15 -1.2158E-14  2.0330E-15 -5.7734E-16  6.9690E-15
 -4.7652E-14  1.1343E-14 -4.5564E-17 -5.7734E-16  3.9903E-13  3.0830E-15
 -1.3882E-13  5.5230E-13 -2.4400E-15  6.9690E-15  3.0830E-15  2.1936E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.354068  113.666209   -0.189269   -0.056239   -0.959642  2452664.672271
# Heliocentric elements and errors
Epoch:              2452664.5000  =  2003/01/25
Mean Anomaly:           29.57607 +/-     0.009
Argument of Peri:      218.01401 +/-     0.011
Long of Asc Node:      193.19667 +/-     0.002
Inclination:             3.33671 +/-     0.000
Eccentricity:         0.37466242 +/-    0.0001
Semi-Major Axis:     58.55162130 +/-    0.0111
Time of Perihelion: 2439219.9959 +/-       5.7
Perihelion:          36.61452935 +/-    0.0093
Aphelion:            80.48871325 +/-    0.0164
Period (y)              448.0398 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -17.38561238 +/-    0.0004
Ecliptic Y           39.19696230 +/-    0.0010
Ecliptic Z           -2.45633907 +/-    0.0001
Ecliptic XDOT        -0.00292474 +/-    0.0000
Ecliptic YDOT        -0.00041375 +/-    0.0000
Ecliptic ZDOT        -0.00001544 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.94971724 +/-    0.0009
Geocenter to KBO     41.98476360 +/-    0.0011
# 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.

2003 01  25.171528 07 39 42.84   +18 03 37.9         13AP183   645  C~2aHi      
2003 01  25.172357 07 39 42.84   +18 03 37.9         13AP183   645  C~2aHi      
2003 01  25.174845 07 39 42.84   +18 03 37.9         13AP183   645  C~2aHi      
2003 01  27.220465 07 39 32.94   +18 04 04.6         13AP183   645  C~2aHi      
2003 01  27.221294 07 39 32.94   +18 04 04.6         13AP183   645  C~2aHi      
2003 01  27.223782 07 39 32.94   +18 04 04.6         13AP183   645  C~2aHi      
2003 02  01.165391 07 39 09.55   +18 05 08.6         13AP183   645  C~2aHi      
2003 02  01.166221 07 39 09.55   +18 05 08.6         13AP183   645  C~2aHi      
2003 02  01.168708 07 39 09.54   +18 05 08.6         13AP183   645  C~2aHi      
2003 12  21.267792 07 48 21.27   +17 43 04.6         13AP183   645  C~2aHi      
2003 12  21.268621 07 48 21.27   +17 43 04.6         13AP183   645  C~2aHi      
2003 12  21.271109 07 48 21.26   +17 43 04.6         13AP183   645  C~2aHi      
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    -0.19       0.00    -0.11
  2   0.0000      0.00    -0.13       0.00    -0.12
  3   0.0000      0.00     0.05       0.00    -0.16
  4   0.0056      0.00    -0.22       0.00     0.13
  5   0.0056      0.00    -0.16       0.00     0.12
  6   0.0056      0.00     0.02       0.00     0.09
  7   0.0191      0.00     0.07       0.00     0.07
  8   0.0192      0.00     0.13       0.00     0.06
  9   0.0192      0.00     0.15       0.00     0.03
 10   0.9038      0.00     0.04       0.00     0.00
 11   0.9038      0.00     0.10       0.00    -0.01
 12   0.9038      0.00     0.11       0.00    -0.03
 13   9.9613      0.00     0.07       0.00     0.12
 14   9.9614      0.00     0.05       0.00    -0.00
 15   9.9614      0.00    -0.03       0.00    -0.06
 16   9.9803      0.00    -0.19       0.00     0.00
 17   9.9804      0.00    -0.13       0.00    -0.09
 18   9.9804      0.00    -0.11       0.00     0.03
 19   9.9804      0.00    -0.11       0.00     0.03
 20  10.0459      0.00     0.08       0.00    -0.03
 21  10.0459      0.00    -0.04       0.00    -0.11
 22  10.0459      0.00     0.10       0.00    -0.06
 23  10.0460      0.00    -0.08       0.00    -0.12
 24  11.3185      0.00     0.09       0.00     0.07
 25  11.3185      0.00     0.11       0.00     0.10
 26  11.3186      0.00    -0.19       0.00    -0.32
 27  11.9982      0.00     0.22       0.00    -0.12
 28  11.9982      0.00    -0.17       0.00    -0.01
 29  11.9982      0.00     0.22       0.00    -0.12
 30  11.9983      0.00    -0.07       0.00     0.66

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:3

Type:       8:3EEEEE  8:3EEEEE  8:3EEEEE

axisobj        58.362    58.362    58.361
ecceobj         0.376     0.376     0.376
incobj          3.338     3.338     3.338
qmin           35.943    35.943    35.943
qmax           81.012    81.017    81.007
amean          57.901    57.901    57.901
amin           57.199    57.190    57.197
amax           58.806    58.809    58.804
emean           0.367     0.367     0.367
emin            0.356     0.356     0.356
emax            0.378     0.378     0.378
imean           4.236     4.233     4.236
imin            3.565     3.565     3.565
imax            4.723     4.720     4.723
excite_mean     0.374     0.374     0.374
fracstop        1.000     1.000     1.000
cjmean          3.093     3.093     3.093

libcent 0       179.8     180.0     179.1
libamp  0        63.3      63.0      63.9
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       261.2     261.4     261.3
kozaiamp         67.9      67.9      68.0