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 Sun Dec 17 02:37:53 2017
# Orbit generated from Bernstein formalism
# Fitting   14 observations of   14
# Arc:   1.20y
# First observation: 2013/01/10
#  Last observation: 2014/03/24
Preliminary a, adot, b, bdot, g, gdot:
  -0.000046   0.022858   0.000001   0.002446   0.022570   0.000000
# Chi-squared of fit:     6.87 DOF:   22 RMS:  0.12
# Min/Max residuals:    -0.22    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.622453E-05  2.300802E-02  7.882658E-08  2.477722E-03  2.271586E-02  9.395467E-03
# Covariance matrix:
  4.8882E-13  3.4099E-13 -7.9773E-15  1.0598E-13  7.1300E-13  3.6596E-11
  3.4099E-13  2.2887E-12 -2.6979E-14  3.5963E-13  1.8027E-12  1.2341E-10
 -7.9773E-15 -2.6979E-14  2.4362E-13 -2.4363E-13 -2.5100E-14 -1.7854E-12
  1.0598E-13  3.5963E-13 -2.4363E-13  4.8428E-13  3.3375E-13  2.3809E-11
  7.1300E-13  1.8027E-12 -2.5100E-14  3.3375E-13  2.0986E-12  1.1506E-10
  3.6596E-11  1.2341E-10 -1.7854E-12  2.3809E-11  1.1506E-10  8.1649E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.626458  135.287749    0.413400   -0.056246   -0.888544  2456303.030478
# Heliocentric elements and errors
Epoch:              2456300.5000  =  2013/01/08
Mean Anomaly:           22.35983 +/-     0.198
Argument of Peri:      261.66184 +/-     0.193
Long of Asc Node:      165.02586 +/-     0.007
Inclination:             7.02523 +/-     0.001
Eccentricity:         0.51075548 +/-    0.0043
Semi-Major Axis:     72.45157886 +/-    0.4256
Time of Perihelion: 2442309.9035 +/-      11.4
Perihelion:          35.44653815 +/-    0.3729
Aphelion:           109.45661958 +/-    0.7135
Period (y)              616.7086 +/-      5.43
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -31.56275989 +/-    0.0020
Ecliptic Y           31.83171117 +/-    0.0020
Ecliptic Z           -2.78447968 +/-    0.0002
Ecliptic XDOT        -0.00277369 +/-    0.0000
Ecliptic YDOT        -0.00116106 +/-    0.0000
Ecliptic ZDOT         0.00022654 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.91346096 +/-    0.0020
Geocenter to KBO     44.02210097 +/-    0.0028
# Hcoef:  5.99

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.

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      

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     0.34
  2   0.0000     -0.65     0.17      -0.38    -0.03
  3   0.0001     -1.79    -0.11      -0.41    -0.03
  4   0.1416  -3405.27    -0.01      75.06    -0.06
  5   0.1417  -3406.00     0.12      75.00    -0.16
  6   0.1417  -3407.10    -0.13      75.34     0.12
  7   0.1417  -3407.84    -0.00      75.05    -0.22
  8   0.9854   5022.01    -0.06     511.52    -0.15
  9   0.9854   5020.35     0.01     511.72     0.09
 10   0.9855   5019.44    -0.03     511.66     0.05
 11   1.1110   2029.27     0.10     545.61    -0.16
 12   1.1111   2027.52     0.07     545.97     0.14
 13   1.1875    444.07    -0.01     649.68     0.17
 14   1.1984    270.32    -0.08     668.38    -0.11

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:2

Type:     11:3EEEEEE  SCATNEAR  SCATNEAR

axisobj        72.404    73.646    71.231
ecceobj         0.511     0.523     0.499
incobj          7.033     7.032     7.034
qmin           34.720    34.297    35.004
qmax          110.915   117.737   108.440
amean          71.595    73.545    70.724
amin           70.477    71.494    69.712
amax           73.162    76.391    72.067
emean           0.505     0.522     0.495
emin            0.495     0.506     0.486
emax            0.516     0.541     0.505
imean           6.229     6.589     6.283
imin            5.987     5.882     6.099
imax            6.454     7.401     6.455
excite_mean     0.516     0.535     0.507
fracstop        1.000     1.000     1.000
cjmean          3.067     3.057     3.073

libcent 0       179.1    -180.0    -180.0
libamp  0       115.0    -180.0    -180.0
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       190.7     195.1     174.1
kozaiamp        180.0     180.0     180.0