Orbit Fit and Astrometric record for 13AS183

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: 13AS183   
# Created Thu Nov 15 02:09:25 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   35 observations of   35
# Arc:   9.78y
# First observation: 2004/04/14
#  Last observation: 2014/01/24
# Chi-squared of fit:    24.43 DOF:   64 RMS:  0.15
# Min/Max residuals:    -0.42    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.821660E-05  3.093050E-02  7.462663E-06  1.150757E-02  2.708547E-02  2.465940E-03
# Covariance matrix:
  2.2777E-13 -7.1151E-14  2.6523E-15 -2.0080E-14 -1.0974E-13 -1.8962E-13
 -7.1151E-14  1.4383E-13 -2.0044E-14  4.8234E-14  7.8744E-15  4.4480E-13
  2.6523E-15 -2.0044E-14  1.0748E-13 -1.8774E-14  5.0622E-15 -6.2746E-14
 -2.0080E-14  4.8234E-14 -1.8774E-14  1.8651E-14  2.5886E-15  1.5150E-13
 -1.0974E-13  7.8744E-15  5.0622E-15  2.5886E-15  1.1522E-13  2.8658E-14
 -1.8962E-13  4.4480E-13 -6.2746E-14  1.5150E-13  2.8658E-14  1.3973E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -6.848958  116.298486   -1.000128   -0.003335   -0.028227  2453109.643396
# Heliocentric elements and errors
Epoch:              2453110.5000  =  2004/04/15
Mean Anomaly:            7.46734 +/-     0.002
Argument of Peri:      321.71636 +/-     0.006
Long of Asc Node:      135.44761 +/-     0.000
Inclination:            21.65713 +/-     0.000
Eccentricity:         0.41203058 +/-    0.0001
Semi-Major Axis:     61.82229379 +/-    0.0073
Time of Perihelion: 2449427.6866 +/-       1.4
Perihelion:          36.34961800 +/-    0.0060
Aphelion:            87.29496959 +/-    0.0111
Period (y)              486.1003 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -17.15429487 +/-    0.0002
Ecliptic Y           32.44692353 +/-    0.0004
Ecliptic Z           -4.40252371 +/-    0.0001
Ecliptic XDOT        -0.00297716 +/-    0.0000
Ecliptic YDOT        -0.00104587 +/-    0.0000
Ecliptic ZDOT         0.00112531 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.96552066 +/-    0.0004
Geocenter to KBO     36.92016429 +/-    0.0005
# Hcoef:  6.51

The following table shows the complete astrometric record for 13AS183. 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 (13AS183) followed by the observatory code and reference code for the source of the astrometry.

2004 04  14.142653 07 47 55.09   +14 09 40.1   22.4V 13AS183   645  C~2aHi      
2004 04  14.143483 07 47 55.09   +14 09 40.1         13AS183   645  C~2aHi      
2004 04  14.145970 07 47 55.09   +14 09 40.1         13AS183   645  C~2aHi      
2004 04  15.140699 07 47 56.24   +14 09 55.3   22.2V 13AS183   645  C~2aHi      
2004 04  15.141528 07 47 56.24   +14 09 55.3         13AS183   645  C~2aHi      
2004 04  15.144016 07 47 56.24   +14 09 55.4         13AS183   645  C~2aHi      
2004 12  12.487948 08 03 04.66   +13 45 24.2   22.6V 13AS183   645  C~2aHi      
2004 12  12.488778 08 03 04.65   +13 45 24.2         13AS183   645  C~2aHi      
2004 12  12.491265 08 03 04.64   +13 45 24.2         13AS183   645  C~2aHi      
2004 12  13.348619 08 03 01.16   +13 45 34.6   22.4V 13AS183   645  C~2aHi      
2004 12  13.349448 08 03 01.16   +13 45 34.7   22.1V 13AS183   645  C~2aHi      
2004 12  13.351936 08 03 01.15   +13 45 34.7   23.0V 13AS183   645  C~2aHi      
2004 12  20.424877 08 02 30.59   +13 47 10.2   22.4V 13AS183   645  C~2aHi      
2004 12  20.425707 08 02 30.59   +13 47 10.2         13AS183   645  C~2aHi      
2004 12  20.428194 08 02 30.58   +13 47 10.2         13AS183   645  C~2aHi      
2012 01  15.56378  08 53 57.714  +15 38 21.48  22.3i 13AS183   F51  C~1w3t      
2012 02  22.43319  08 50 45.256  +15 55 48.64  22.6w 13AS183   F51  C~1w3t      
2013 01  10.53040  09 01 43.858  +15 46 50.14  22.7w 13AS183   F51  C~1w3t      
2013 01  10.54427  09 01 43.765  +15 46 50.87  22.5w 13AS183   F51  C~1w3t      
2013 01  10.55813  09 01 43.700  +15 46 50.85  22.4w 13AS183   F51  C~1w3t      
2013 01  10.57198  09 01 43.629  +15 46 51.09  22.5w 13AS183   F51  C~1w3t      
2013 02  03.34088  08 59 44.292  +15 57 50.71  22.2w 13AS183   F51  C~1w3t      
2013 02  03.35550  08 59 44.211  +15 57 51.22  22.5w 13AS183   F51  C~1w3t      
2013 02  03.37016  08 59 44.138  +15 57 51.62  22.1w 13AS183   F51  C~1w3t      
2013 02  03.38481  08 59 44.072  +15 57 51.96  22.2w 13AS183   F51  C~1w3t      
2013 03  03.25695  08 57 28.724  +16 10 41.76  22.2w 13AS183   F51  C~1w3t      
2013 03  03.27126  08 57 28.646  +16 10 42.01  22.6w 13AS183   F51  C~1w3t      
2013 03  03.28565  08 57 28.615  +16 10 42.73  22.6w 13AS183   F51  C~1w3t      
2013 03  03.30000  08 57 28.533  +16 10 43.03  22.5w 13AS183   F51  C~1w3t      
2013 05  30.27950  08 56 51.856  +16 24 53.75  22.1w 13AS183   F51  C~1w3t      
2014 01  05.45942  09 09 28.624  +15 53 47.05  22.4w 13AS183   F51  C~1w3t      
2014 01  05.47460  09 09 28.559  +15 53 47.12  22.4w 13AS183   F51  C~1w3t      
2014 01  24.38580  09 07 59.491  +16 02 21.15  21.8w 13AS183   F51  C~1w3t      
2014 01  24.39898  09 07 59.406  +16 02 21.74  21.7w 13AS183   F51  C~1w3t      
2014 01  24.41219  09 07 59.355  +16 02 22.29  21.7w 13AS183   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    -0.15
  2   0.0000      0.00    -0.07       0.00    -0.16
  3   0.0000      0.00    -0.11       0.00    -0.20
  4   0.0027      0.00     0.03       0.00    -0.04
  5   0.0027      0.00     0.01       0.00    -0.05
  6   0.0027      0.00    -0.03       0.00     0.01
  7   0.6635      0.00     0.26       0.00    -0.02
  8   0.6635      0.00     0.16       0.00    -0.03
  9   0.6635      0.00     0.16       0.00    -0.06
 10   0.6659      0.00    -0.17       0.00     0.03
 11   0.6659      0.00    -0.12       0.00     0.12
 12   0.6659      0.00    -0.12       0.00     0.09
 13   0.6852      0.00    -0.03       0.00     0.16
 14   0.6852      0.00     0.03       0.00     0.15
 15   0.6852      0.00     0.06       0.00     0.11
 16   7.7547      0.00    -0.14       0.00     0.23
 17   7.8584      0.00    -0.11       0.00    -0.03
 18   8.7430      0.00     0.27       0.00    -0.06
 19   8.7431      0.00    -0.13       0.00     0.31
 20   8.7431      0.00    -0.12       0.00    -0.07
 21   8.7431      0.00    -0.19       0.00    -0.19
 22   8.8082      0.00    -0.00       0.00    -0.00
 23   8.8082      0.00    -0.07       0.00     0.08
 24   8.8083      0.00    -0.00       0.00     0.06
 25   8.8083      0.00     0.16       0.00    -0.02
 26   8.8846      0.00    -0.04       0.00     0.05
 27   8.8847      0.00    -0.27       0.00    -0.07
 28   8.8847      0.00     0.21       0.00     0.28
 29   8.8848      0.00    -0.08       0.00     0.21
 30   9.1256      0.00     0.26       0.00    -0.42
 31   9.7285      0.00     0.09       0.00     0.11
 32   9.7285      0.00     0.11       0.00    -0.21
 33   9.7803      0.00     0.06       0.00    -0.27
 34   9.7803      0.00    -0.21       0.00    -0.06
 35   9.7803      0.00     0.04       0.00     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.

13AS183    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        61.672    61.672    61.672
ecceobj         0.411     0.411     0.411
incobj         21.705    21.705    21.705
qmin           35.107    35.103    35.063
qmax           88.685    88.670    88.665
amean          61.233    61.252    61.164
amin           60.534    60.459    60.260
amax           62.209    62.213    62.181
emean           0.408     0.408     0.408
emin            0.393     0.392     0.392
emax            0.426     0.426     0.426
imean          20.199    20.229    20.188
imin           19.459    19.548    19.446
imax           20.854    21.074    21.008
excite_mean     0.535     0.535     0.534
fracstop        1.000     1.000     1.000
cjmean          2.936     2.935     2.935

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       159.5     163.0     162.2
kozaiamp        180.0     180.0     179.9