Orbit Fit and Astrometric record for 13AQ183

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: 13AQ183   
# Created Mon Dec 18 02:37:52 2017
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   23
# Arc:   2.19y
# First observation: 2012/01/15
#  Last observation: 2014/03/24
Preliminary a, adot, b, bdot, g, gdot:
   0.000013   0.028549   0.000003   0.000673   0.026504   0.000000
# Chi-squared of fit:    17.56 DOF:   40 RMS:  0.15
# Min/Max residuals:    -0.35    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.776555E-05  2.851847E-02  7.933286E-07  6.764619E-04  2.628964E-02 -2.732348E-04
# Covariance matrix:
  6.7355E-13 -1.0266E-12  8.4983E-15 -2.0748E-14 -5.7767E-13 -1.2161E-11
 -1.0266E-12  2.4569E-12 -2.4299E-14  5.9260E-14  1.6299E-12  3.4701E-11
  8.4983E-15 -2.4299E-14  3.8818E-13 -2.1386E-13 -1.4991E-14 -3.7261E-13
 -2.0748E-14  5.9260E-14 -2.1386E-13  1.4184E-13  3.8039E-14  9.0265E-13
 -5.7767E-13  1.6299E-12 -1.4991E-14  3.8039E-14  1.4959E-12  2.2984E-11
 -1.2161E-11  3.4701E-11 -3.7261E-13  9.0265E-13  2.2984E-11  5.2567E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.264295  131.701048    0.285660   -0.037174   -0.940600  2455942.051886
# Heliocentric elements and errors
Epoch:              2455940.5000  =  2012/01/14
Mean Anomaly:          355.69881 +/-     0.231
Argument of Peri:      307.45050 +/-     0.327
Long of Asc Node:      189.85440 +/-     0.014
Inclination:             2.58886 +/-     0.000
Eccentricity:         0.16347887 +/-    0.0001
Semi-Major Axis:     46.55933028 +/-    0.0066
Time of Perihelion: 2457326.9209 +/-      74.4
Perihelion:          38.94786358 +/-    0.0080
Aphelion:            54.17079699 +/-    0.0096
Period (y)              317.7008 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.69491911 +/-    0.0012
Ecliptic Y           29.27164007 +/-    0.0013
Ecliptic Z           -1.50282468 +/-    0.0001
Ecliptic XDOT        -0.00220479 +/-    0.0000
Ecliptic YDOT        -0.00199037 +/-    0.0000
Ecliptic ZDOT         0.00007161 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.97840765 +/-    0.0013
Geocenter to KBO     38.03779406 +/-    0.0018
# Hcoef:  6.60

The following table shows the complete astrometric record for 13AQ183. 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 (13AQ183) followed by the observatory code and reference code for the source of the astrometry.

2012 01  15.55112  08 54 02.712  +15 06 01.17  21.8i 13AQ183   F51  C~1w3s      
2012 01  21.53358  08 53 32.558  +15 08 02.09  22.4r 13AQ183   F51  C~1w3s      
2013 01  10.52147  09 00 56.172  +14 39 37.60  22.6w 13AQ183   F51  C~1w3s      
2013 01  10.53530  09 00 56.114  +14 39 37.94  22.6w 13AQ183   F51  C~1w3s      
2013 01  10.54917  09 00 56.055  +14 39 38.24  22.4w 13AQ183   F51  C~1w3s      
2013 01  10.56306  09 00 55.981  +14 39 38.14  22.7w 13AQ183   F51  C~1w3s      
2013 02  03.34154  08 58 55.970  +14 48 01.47  22.5w 13AQ183   F51  C~1w3s      
2013 02  03.35615  08 58 55.879  +14 48 01.65  22.4w 13AQ183   F51  C~1w3s      
2013 02  03.37082  08 58 55.797  +14 48 02.08  22.4w 13AQ183   F51  C~1w3s      
2013 02  03.38547  08 58 55.732  +14 48 02.46  22.3w 13AQ183   F51  C~1w3s      
2014 01  05.42978  09 07 51.719  +14 12 13.96  22.4w 13AQ183   F51  C~1w3t      
2014 01  05.44494  09 07 51.654  +14 12 13.96  22.5w 13AQ183   F51  C~1w3t      
2014 01  05.46008  09 07 51.599  +14 12 14.15  22.4w 13AQ183   F51  C~1w3t      
2014 01  25.39022  09 06 16.305  +14 18 57.15  22.4w 13AQ183   F51  C~1w3t      
2014 01  25.39088  09 06 16.282  +14 18 57.08  22.6w 13AQ183   F51  C~1w3t      
2014 01  25.40242  09 06 16.234  +14 18 57.08  22.7w 13AQ183   F51  C~1w3t      
2014 01  25.41331  09 06 16.217  +14 18 57.55  22.5w 13AQ183   F51  C~1w3t      
2014 01  25.41397  09 06 16.193  +14 18 57.50  22.5w 13AQ183   F51  C~1w3t      
2014 01  25.42481  09 06 16.116  +14 18 57.67  22.2w 13AQ183   F51  C~1w3t      
2014 03  20.25832  09 02 07.562  +14 38 18.26  22.6w 13AQ183   F51  C~1w3t      
2014 03  20.27019  09 02 07.508  +14 38 18.64  22.9w 13AQ183   F51  C~1w3t      
2014 03  20.28200  09 02 07.483  +14 38 18.75  22.5w 13AQ183   F51  C~1w3t      
2014 03  24.26429  09 01 55.165  +14 39 24.34  22.8w 13AQ183   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    -0.13       0.00    -0.08
  2   0.0164   -453.08     0.17      -3.26    -0.11
  3   0.9883   6199.74    -0.05     143.99     0.06
  4   0.9883   6198.83     0.04     144.08     0.17
  5   0.9884   6197.92     0.14     144.13     0.24
  6   0.9884   6196.92     0.14     143.73    -0.14
  7   1.0535   4383.43     0.03     138.61     0.12
  8   1.0535   4382.11    -0.12     138.41    -0.08
  9   1.0536   4380.85    -0.21     138.49    -0.00
 10   1.0536   4379.84    -0.05     138.59     0.09
 11   1.9737  12467.57    -0.10     290.09     0.09
 12   1.9737  12466.66     0.01     289.82    -0.16
 13   1.9737  12465.84     0.20     289.77    -0.19
 14   2.0283  11018.42    -0.10     276.77     0.08
 15   2.0283  11018.12    -0.35     276.61    -0.08
 16   2.0283  11017.45    -0.11     276.41    -0.28
 17   2.0284  11017.08     0.37     276.79     0.11
 18   2.0284  11016.76     0.11     276.64    -0.04
 19   2.0284  11015.63    -0.16     276.48    -0.20
 20   2.1758   7217.15     0.13     360.32    -0.06
 21   2.1758   7216.29    -0.12     360.46     0.05
 22   2.1759   7215.91     0.10     360.46     0.03
 23   2.1868   7025.67     0.07     372.85     0.39

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.

13AQ183    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.620    46.638    46.603
ecceobj         0.164     0.164     0.163
incobj          2.588     2.588     2.588
qmin           38.140    38.133    38.124
qmax           55.382    55.390    55.296
amean          46.537    46.574    46.519
amin           46.126    46.164    46.124
amax           46.998    47.047    46.987
emean           0.163     0.164     0.163
emin            0.150     0.150     0.149
emax            0.179     0.179     0.178
imean           3.196     3.197     3.197
imin            2.546     2.556     2.542
imax            3.804     3.804     3.803
excite_mean     0.172     0.173     0.172
fracstop        1.000     1.000     1.000
cjmean          3.096     3.096     3.096

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -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       178.3     178.5     178.5
kozaiamp        180.0     180.0     179.9