Orbit Fit and Astrometric record for 13AT183

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: 13AT183   
# Created Mon Nov 19 02:09:25 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   27 observations of   27
# Arc:  11.08y
# First observation: 2003/01/29
#  Last observation: 2014/02/26
# Chi-squared of fit:    28.70 DOF:   48 RMS:  0.18
# Min/Max residuals:    -0.65    0.40
# Exact a, adot, b, bdot, g, gdot:
  1.126478E-05  1.226732E-02 -5.957901E-06 -6.493623E-03  1.773271E-02  6.329589E-03
# Covariance matrix:
  4.8144E-13 -9.2656E-14 -1.4229E-14  2.4744E-14 -7.1990E-14 -3.7876E-13
 -9.2656E-14  9.1110E-14  2.6390E-14 -4.5952E-14  8.3011E-14  7.0366E-13
 -1.4229E-14  2.6390E-14  4.6277E-13 -6.0018E-14  2.1837E-14  2.1718E-13
  2.4744E-14 -4.5952E-14 -6.0018E-14  3.0023E-14 -3.7341E-14 -3.7830E-13
 -7.1990E-14  8.3011E-14  2.1837E-14 -3.7341E-14  6.4904E-13  5.6889E-13
 -3.7876E-13  7.0366E-13  2.1718E-13 -3.7830E-13  5.6889E-13  5.7935E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.665485  119.470910   -0.160244    0.044977   -0.966105  2452668.662699
# Heliocentric elements and errors
Epoch:              2452668.5000  =  2003/01/29
Mean Anomaly:           55.15937 +/-     0.023
Argument of Peri:       69.85583 +/-     0.018
Long of Asc Node:      304.58368 +/-     0.000
Inclination:            27.92426 +/-     0.000
Eccentricity:         0.42273081 +/-    0.0001
Semi-Major Axis:     62.43170624 +/-    0.0149
Time of Perihelion: 2425061.2597 +/-      15.0
Perihelion:          36.03990051 +/-    0.0124
Aphelion:            88.82351198 +/-    0.0230
Period (y)              493.3056 +/-      0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.33172792 +/-    0.0013
Ecliptic Y           49.81044138 +/-    0.0022
Ecliptic Z            2.62220376 +/-    0.0001
Ecliptic XDOT        -0.00215904 +/-    0.0000
Ecliptic YDOT        -0.00004566 +/-    0.0000
Ecliptic ZDOT        -0.00095586 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   57.36380551 +/-    0.0020
Geocenter to KBO     56.39267197 +/-    0.0026
# Hcoef:  4.73

The following table shows the complete astrometric record for 13AT183. 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 (13AT183) followed by the observatory code and reference code for the source of the astrometry.

2003 01  29.161956 08 08 56.00   +22 52 02.6   22.4V 13AT183   645  C~1x8T      
2003 01  29.162785 08 08 56.00   +22 52 02.6   22.0V 13AT183   645  C~1x8T      
2003 01  29.165273 08 08 56.00   +22 52 02.6   22.9V 13AT183   645  C~1x8T      
2011 01  30.46977  08 28 24.395  +18 53 31.25  22.8w 13AT183   F51  C~1w3t      
2011 01  30.48495  08 28 24.344  +18 53 31.63  22.8w 13AT183   F51  C~1w3t      
2011 01  30.50124  08 28 24.297  +18 53 31.80  22.8w 13AT183   F51  C~1w3t      
2011 01  30.51635  08 28 24.227  +18 53 31.73  22.6w 13AT183   F51  C~1w3t      
2012 01  26.50324  08 30 55.226  +18 24 02.35  22.2i 13AT183   F51  C~1w3t      
2012 02  01.52857  08 30 32.625  +18 25 01.84  22.4g 13AT183   F51  C~1w3t      
2012 02  26.27476  08 29 06.153  +18 28 49.66  21.7i 13AT183   F51  C~1w3t      
2013 01  10.53239  08 34 04.017  +17 52 57.78  22.5w 13AT183   F51  C~1w3t      
2013 01  10.54624  08 34 03.946  +17 52 57.64  22.5w 13AT183   F51  C~1w3t      
2013 01  10.56011  08 34 03.901  +17 52 57.79  22.5w 13AT183   F51  C~1w3t      
2013 01  10.57396  08 34 03.843  +17 52 58.13  22.7w 13AT183   F51  C~1w3t      
2013 02  10.42066  08 32 10.529  +17 58 04.97  22.7w 13AT183   F51  C~1w3t      
2013 02  10.43611  08 32 10.517  +17 58 05.22  22.3w 13AT183   F51  C~1w3t      
2013 02  10.45156  08 32 10.461  +17 58 05.40  22.6w 13AT183   F51  C~1w3t      
2013 02  10.46701  08 32 10.411  +17 58 05.57  22.3w 13AT183   F51  C~1w3t      
2013 03  03.25276  08 31 02.438  +18 01 08.82  22.4w 13AT183   F51  C~1w3t      
2013 03  03.26709  08 31 02.375  +18 01 08.63  22.7w 13AT183   F51  C~1w3t      
2013 05  10.26966  08 29 59.796  +18 02 03.48  22.6w 13AT183   F51  C~1w3t      
2013 12  31.56305  08 36 49.094  +17 23 05.48  22.4w 13AT183   F51  C~1w3t      
2014 02  23.26433  08 33 39.184  +17 31 46.97  22.3w 13AT183   F51  C~1w3t      
2014 02  23.28944  08 33 39.076  +17 31 46.89  22.6w 13AT183   F51  C~1w3t      
2014 02  26.41676  08 33 29.209  +17 32 14.83  22.5w 13AT183   F51  C~1w3t      
2014 02  26.42976  08 33 29.171  +17 32 14.69  22.3w 13AT183   F51  C~1w3t      
2014 02  26.44277  08 33 29.115  +17 32 14.90  22.6w 13AT183   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    -0.06       0.00     0.05
  2   0.0000      0.00    -0.01       0.00     0.04
  3   0.0000      0.00     0.14       0.00     0.02
  4   8.0036      0.00    -0.13       0.00    -0.14
  5   8.0036      0.00    -0.02       0.00     0.10
  6   8.0037      0.00     0.21       0.00     0.11
  7   8.0037      0.00     0.02       0.00    -0.11
  8   8.9920      0.00     0.00       0.00     0.10
  9   9.0085      0.00    -0.20       0.00    -0.65
 10   9.0763      0.00    -0.27       0.00    -0.03
 11   9.9504      0.00     0.25       0.00     0.16
 12   9.9504      0.00    -0.06       0.00    -0.11
 13   9.9504      0.00     0.02       0.00    -0.09
 14   9.9505      0.00    -0.10       0.00     0.12
 15  10.0349      0.00    -0.63       0.00    -0.16
 16  10.0350      0.00     0.03       0.00    -0.06
 17  10.0350      0.00     0.04       0.00    -0.03
 18  10.0351      0.00     0.13       0.00    -0.01
 19  10.0920      0.00     0.08       0.00     0.25
 20  10.0920      0.00    -0.23       0.00    -0.05
 21  10.2782      0.00     0.06       0.00     0.16
 22  10.9224      0.00    -0.07       0.00     0.04
 23  11.0694      0.00     0.40       0.00     0.15
 24  11.0695      0.00     0.01       0.00    -0.16
 25  11.0780      0.00     0.14       0.00     0.24
 26  11.0781      0.00     0.18       0.00    -0.01
 27  11.0781      0.00    -0.04       0.00     0.09

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.

13AT183    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        62.351    62.351    62.350
ecceobj         0.427     0.427     0.427
incobj         28.023    28.023    28.023
qmin           34.996    35.001    35.012
qmax           90.520    90.445    90.512
amean          62.036    62.036    62.038
amin           61.325    61.339    61.335
amax           63.067    63.050    63.069
emean           0.416     0.416     0.416
emin            0.396     0.396     0.396
emax            0.435     0.435     0.435
imean          29.894    29.895    29.893
imin           29.259    29.280    29.280
imax           30.752    30.775    30.752
excite_mean     0.649     0.649     0.649
fracstop        1.000     1.000     1.000
cjmean          2.748     2.748     2.748

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       173.5     173.6     173.5
kozaiamp        179.9     180.0     180.0