Orbit Fit and Astrometric record for 13AR183

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: 13AR183   
# Created Mon Jul 16 01:37:57 2018
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:  12.14y
# First observation: 2005/10/30
#  Last observation: 2017/12/20
Preliminary a, adot, b, bdot, g, gdot:
   0.001290   0.023925   0.000197   0.002302   0.020574   0.000000
# Chi-squared of fit:    11.69 DOF:   34 RMS:  0.14
# Min/Max residuals:    -0.30    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.687949E-05  2.555623E-02  2.057631E-06  2.464140E-03  2.375163E-02  9.358085E-03
# Covariance matrix:
  4.8727E-13 -1.0856E-13  7.6226E-15 -5.9877E-15 -4.5842E-14 -2.4134E-13
 -1.0856E-13  1.1777E-13 -1.0514E-14  1.0542E-14  2.4130E-13  3.9748E-13
  7.6226E-15 -1.0514E-14  4.0866E-13 -4.6998E-14 -1.9330E-14 -3.8229E-14
 -5.9877E-15  1.0542E-14 -4.6998E-14  7.4317E-15  2.2715E-14  3.7660E-14
 -4.5842E-14  2.4130E-13 -1.9330E-14  2.2715E-14  7.0377E-13  8.2512E-13
 -2.4134E-13  3.9748E-13 -3.8229E-14  3.7660E-14  8.2512E-13  1.4263E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.556201  126.126763    0.997183   -0.001043   -0.014581  2453673.933123
# Heliocentric elements and errors
Epoch:              2453670.5000  =  2005/10/27
Mean Anomaly:           18.49783 +/-     0.006
Argument of Peri:      261.73660 +/-     0.010
Long of Asc Node:      165.10848 +/-     0.001
Inclination:             7.01407 +/-     0.000
Eccentricity:         0.50407801 +/-    0.0001
Semi-Major Axis:     71.68806813 +/-    0.0141
Time of Perihelion: 2442278.8367 +/-       1.2
Perihelion:          35.55168910 +/-    0.0083
Aphelion:           107.82444716 +/-    0.0216
Period (y)              606.9858 +/-      0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -23.95180159 +/-    0.0009
Ecliptic Y           34.49674094 +/-    0.0012
Ecliptic Z           -3.34439865 +/-    0.0001
Ecliptic XDOT        -0.00302446 +/-    0.0000
Ecliptic YDOT        -0.00085650 +/-    0.0000
Ecliptic ZDOT         0.00019747 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.12954945 +/-    0.0011
Geocenter to KBO     42.10237727 +/-    0.0015
# Hcoef:  6.00

The following table shows the complete astrometric record for 13AR183. 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 (13AR183) followed by the observatory code and reference code for the source of the astrometry.

2005 10  30.432380 08 29 21.98   +14 19 23.9         13AR183   645  C~2aHi      
2005 10  30.433209 08 29 21.98   +14 19 23.9   21.7V 13AR183   645  C~2aHi      
2005 10  30.435697 08 29 21.98   +14 19 23.9   23.0V 13AR183   645  C~2aHi      
2013 01  10.52970  09 06 37.553  +12 46 59.49  22.7w 13AR183   F51  C~1w3t      
2013 01  10.54354  09 06 37.503  +12 46 59.31  22.5w 13AR183   F51  C~1w3t      
2013 01  10.55737  09 06 37.428  +12 46 59.62  22.5w 13AR183   F51  C~1w3t      
2013 03  03.25761  09 02 56.008  +13 04 32.48  22.5w 13AR183   F51  C~1w3t      
2013 03  03.27192  09 02 55.959  +13 04 32.64  22.5w 13AR183   F51  C~1w3t      
2013 03  03.28630  09 02 55.893  +13 04 33.28  22.5w 13AR183   F51  C~1w3t      
2013 03  03.30066  09 02 55.839  +13 04 33.21  22.8w 13AR183   F51  C~1w3t      
2014 01  05.42978  09 12 15.832  +12 30 40.15  22.4w 13AR183   F51  C~1w3t      
2014 01  05.46008  09 12 15.728  +12 30 40.83  22.6w 13AR183   F51  C~1w3t      
2014 01  05.47526  09 12 15.667  +12 30 41.04  22.6w 13AR183   F51  C~1w3t      
2014 02  20.33220  09 09 01.116  +12 45 51.04  22.0i 13AR183   F51  C~1w3t      
2014 02  20.35799  09 09 01.009  +12 45 51.90  21.6i 13AR183   F51  C~1w3t      
2014 03  20.26942  09 07 19.503  +12 55 12.35  22.5w 13AR183   F51  C~1w3t      
2014 03  24.26353  09 07 08.502  +12 56 20.70  22.3w 13AR183   F51  C~1w3t      
2017 12  20.38790  09 33 07.478  +11 27 00.08  22.8R 13AR183   G37  C~2Uwr      
2017 12  20.48119  09 33 07.267  +11 27 01.15        13AR183   G37  C~2Uwr      
2017 12  20.52357  09 33 07.183  +11 27 01.43        13AR183   G37  C~2Uwr      

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     0.03       0.00    -0.09
  2   0.0000      0.00     0.02       0.00    -0.08
  3   0.0000      0.00    -0.01       0.00    -0.07
  4   7.1981  33199.10    -0.05    3179.11     0.36
  5   7.1981  33198.43     0.17    3178.73    -0.02
  6   7.1982  33197.26    -0.12    3178.72    -0.02
  7   7.3397  29715.69    -0.07    3290.04    -0.03
  8   7.3397  29714.95     0.05    3290.00    -0.14
  9   7.3398  29713.82    -0.19    3290.35     0.15
 10   7.3398  29713.06    -0.07    3290.06    -0.19
 11   8.1834  38378.53    -0.07    3647.27    -0.07
 12   8.1835  38376.82     0.01    3647.49     0.17
 13   8.1836  38375.87    -0.03    3647.43     0.13
 14   8.3091  35291.50     0.15    3711.74    -0.08
 15   8.3092  35289.71     0.11    3712.13     0.23
 16   8.3856  33663.31     0.07    3832.95     0.26
 17   8.3965  33485.18     0.00    3853.60    -0.02
 18  12.1395  58098.50    -0.14    5478.28    -0.30
 19  12.1398  58094.96    -0.07    5478.35    -0.08
 20  12.1399  58093.60     0.21    5478.24    -0.12

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.

13AR183    quality flag:3

Type:     11:3EEEEEE11:3EEEEEE11:3EEEEEE

axisobj        72.207    72.251    72.162
ecceobj         0.509     0.510     0.509
incobj          7.033     7.033     7.033
qmin           34.714    34.726    34.708
qmax          110.607   110.690   110.594
amean          71.595    71.595    71.594
amin           70.642    70.618    70.634
amax           72.990    73.040    72.991
emean           0.504     0.504     0.504
emin            0.495     0.494     0.495
emax            0.515     0.515     0.515
imean           6.083     6.083     6.081
imin            5.624     5.665     5.636
imax            6.503     6.501     6.501
excite_mean     0.515     0.515     0.515
fracstop        1.000     1.000     1.000
cjmean          3.068     3.069     3.068

libcent 0       180.8     181.4     178.4
libamp  0        29.0      49.2      35.2
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       292.3     279.8     288.7
kozaiamp        180.0     180.0     180.0