Orbit Fit and Astrometric record for 13RW124

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: 13RW124   
# Created Wed Dec  8 02:11:53 2021
# Orbit generated from Bernstein formalism
# Fitting     41 observations of     41
# Arc:   4.03y
# First observation: 2013/09/02
#  Last observation: 2017/09/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000091   0.032862   0.000001   0.000671   0.029615   0.000000
# Chi-squared of fit:    10.85 DOF:     76 RMS:  0.09
# Min/Max residuals:    -0.21    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.738855E-05  3.286898E-02  5.909725E-07  6.754355E-04  2.981139E-02  1.607705E-03
# Covariance matrix:
  1.4583E-13  1.9323E-14  6.0225E-16  9.1363E-16  1.4280E-13  4.2266E-13
  1.9323E-14  2.6867E-13 -1.9578E-16  5.3228E-15  2.8234E-13  2.2786E-12
  6.0225E-16 -1.9578E-16  8.5353E-14 -2.8280E-14  8.9278E-16 -1.8501E-15
  9.1363E-16  5.3228E-15 -2.8280E-14  1.6215E-14  5.7947E-15  4.8032E-14
  1.4280E-13  2.8234E-13  8.9278E-16  5.7947E-15  4.7145E-13  2.5355E-12
  4.2266E-13  2.2786E-12 -1.8501E-15  4.8032E-14  2.5355E-12  2.0558E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.796634   16.658465    0.606852   -0.067423   -0.804596  2456537.860308
# Heliocentric elements and errors
Epoch:              2456530.5000  =  2013/08/26
Mean Anomaly:           23.80711 +/-     0.101
Argument of Peri:      255.72921 +/-     0.118
Long of Asc Node:       92.63380 +/-     0.003
Inclination:             4.80611 +/-     0.000
Eccentricity:         0.06779632 +/-    0.0001
Semi-Major Axis:     36.59366195 +/-    0.0024
Time of Perihelion: 2451183.4849 +/-      22.6
Perihelion:          34.11274639 +/-    0.0032
Aphelion:            39.07457751 +/-    0.0034
Period (y)              221.3691 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.97092973 +/-    0.0007
Ecliptic Y            9.23542988 +/-    0.0002
Ecliptic Z           -2.80494161 +/-    0.0001
Ecliptic XDOT        -0.00072561 +/-    0.0000
Ecliptic YDOT         0.00293454 +/-    0.0000
Ecliptic ZDOT         0.00004961 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.35466591 +/-    0.0007
Geocenter to KBO     33.54422797 +/-    0.0008
# Hcoef:  7.52

The following table shows the complete astrometric record for 13RW124. 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 (13RW124) followed by the observatory code and reference code for the source of the astrometry.

2013 09  02.35953  01 08 45.772  +02 06 55.12  23.7g 13RW124   W84  C~4yQt      
2013 09  02.35953  01 08 45.77   +02 06 55.1   23.7g 13RW124   W84  C~3clA      
2013 09  09.25122  01 08 16.822  +02 03 23.82  23.1g 13RW124   W84  C~4yQt      
2013 09  09.25122  01 08 16.81   +02 03 23.6   23.8g 13RW124   W84  C~3clA      
2013 09  10.35837  01 08 11.875  +02 02 48.51  23.8g 13RW124   W84  C~4yQt      
2013 09  10.35837  01 08 11.88   +02 02 48.5   23.7g 13RW124   W84  C~3clA      
2013 09  10.35978  01 08 11.870  +02 02 48.45  22.9r 13RW124   W84  C~4yQt      
2013 09  10.35978  01 08 11.87   +02 02 48.4   23.1r 13RW124   W84  C~3clA      
2013 09  10.36117  01 08 11.872  +02 02 48.38  22.7i 13RW124   W84  C~4yQt      
2013 09  10.36117  01 08 11.87   +02 02 48.4   22.7i 13RW124   W84  C~3clA      
2013 11  08.16968  01 03 10.344  +01 32 13.61  23.5g 13RW124   W84  C~4yQt      
2013 11  08.16968  01 03 10.34   +01 32 13.6   23.5g 13RW124   W84  C~3clA      
2013 11  08.19405  01 03 10.236  +01 32 12.96  23.0r 13RW124   W84  C~4yQt      
2013 11  08.19405  01 03 10.24   +01 32 13.0   23.0r 13RW124   W84  C~3clA      
2014 10  28.21151  01 11 00.891  +02 22 26.03  22.6r 13RW124   W84  C~4yQt      
2014 10  28.21151  01 11 00.89   +02 22 26.0   22.7r 13RW124   W84  C~3clA      
2014 10  29.22470  01 10 55.637  +02 21 57.41  22.8r 13RW124   W84  C~4yQt      
2014 10  29.22470  01 10 55.64   +02 21 57.4   22.9r 13RW124   W84  C~3clA      
2014 10  29.22605  01 10 55.628  +02 21 57.30  22.4i 13RW124   W84  C~4yQt      
2014 10  29.22605  01 10 55.63   +02 21 57.3   22.2i 13RW124   W84  C~3clA      
2014 11  13.08363  01 09 43.785  +02 15 44.30  23.0g 13RW124   W84  C~4yQt      
2014 11  13.08363  01 09 43.78   +02 15 44.3   23.2g 13RW124   W84  C~3clA      
2015 10  17.17099  01 18 56.726  +03 13 17.07  22.4r 13RW124   W84  C~4yQt      
2015 10  17.17099  01 18 56.73   +03 13 17.1   22.5r 13RW124   W84  C~3clA      
2016 08  31.35962  01 29 31.533  +04 21 56.04  23.5g 13RW124   W84  C~4yQt      
2016 08  31.35962  01 29 31.53   +04 21 56.0   24.0g 13RW124   W84  C~3clA      
2016 10  23.21697  01 25 14.804  +03 54 36.92  22.6g 13RW124   W84  C~4yQt      
2016 10  29.15875  01 24 42.963  +03 51 41.40  22.2i 13RW124   W84  C~4yQt      
2016 10  29.15875  01 24 42.96   +03 51 41.4   22.2i 13RW124   W84  C~3clA      
2016 10  29.19725  01 24 42.763  +03 51 40.34  23.7g 13RW124   W84  C~4yQt      
2016 10  29.19725  01 24 42.76   +03 51 40.3   23.6g 13RW124   W84  C~3clA      
2016 11  05.15757  01 24 06.738  +03 48 29.36  22.6r 13RW124   W84  C~4yQt      
2016 11  05.15757  01 24 06.74   +03 48 29.4   22.8r 13RW124   W84  C~3clA      
2016 11  05.15895  01 24 06.729  +03 48 29.32  22.7i 13RW124   W84  C~4yQt      
2016 11  05.15895  01 24 06.73   +03 48 29.3   22.7i 13RW124   W84  C~3clA      
2016 11  07.18357  01 23 56.593  +03 47 37.28  22.8z 13RW124   W84  C~4yQt      
2017 08  22.38782  01 36 49.624  +05 09 27.42  22.9r 13RW124   W84  C~4yQt      
2017 08  22.38920  01 36 49.621  +05 09 27.49  22.4i 13RW124   W84  C~4yQt      
2017 08  22.39057  01 36 49.621  +05 09 27.46  23.5g 13RW124   W84  C~4yQt      
2017 08  27.39145  01 36 36.105  +05 07 36.37  22.7z 13RW124   W84  C~4yQt      
2017 09  14.30264  01 35 30.574  +04 59 40.01  21.6z 13RW124   W84  C~4yQt      

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     0.01       0.00    -0.05
     2   0.0000      0.04     0.04       0.01    -0.04
     3   0.0189   -481.71     0.04     -29.82     0.18
     4   0.0189   -481.96    -0.21     -29.95     0.04
     5   0.0219   -563.67    -0.00     -34.21    -0.01
     6   0.0219   -563.73    -0.07     -34.17     0.02
     7   0.0219   -563.84    -0.07     -34.25    -0.04
     8   0.0219   -563.83    -0.05     -34.20     0.00
     9   0.0219   -563.84     0.03     -34.25    -0.04
    10   0.0219   -563.82     0.05     -34.28    -0.07
    11   0.1829  -5443.89    -0.05      -4.26     0.06
    12   0.1829  -5443.83     0.01      -4.27     0.04
    13   0.1830  -5445.51     0.13      -4.24    -0.06
    14   0.1830  -5445.58     0.06      -4.26    -0.07
    15   1.1522   2227.29     0.06      88.69    -0.09
    16   1.1522   2227.27     0.04      88.67    -0.12
    17   1.1550   2143.61     0.10      92.20     0.06
    18   1.1550   2143.57     0.06      92.23     0.08
    19   1.1550   2143.43     0.03      92.17     0.02
    20   1.1550   2143.41     0.01      92.18     0.03
    21   1.1957   1005.61    -0.11     157.71     0.13
    22   1.1957   1005.68    -0.04     157.68     0.11
    23   2.1213   9988.68    -0.02     199.93    -0.19
    24   2.1213   9988.61    -0.08     199.93    -0.20
    25   2.9952  20400.06     0.12     422.12     0.14
    26   2.9952  20400.11     0.18     422.14     0.16
    27   3.1399  16191.66     0.11     352.41     0.00
    28   3.1562  15681.08    -0.09     370.02    -0.01
    29   3.1562  15681.12    -0.05     370.00    -0.02
    30   3.1563  15677.87     0.01     370.13    -0.04
    31   3.1563  15677.93     0.07     370.15    -0.02
    32   3.1754  15103.44     0.02     397.25     0.02
    33   3.1754  15103.40    -0.02     397.22    -0.01
    34   3.1754  15103.27    -0.05     397.21    -0.02
    35   3.1754  15103.26    -0.05     397.24     0.00
    36   3.1809  14942.29    -0.17     406.44     0.09
    37   3.9700  27637.77    -0.16     608.90    -0.02
    38   3.9700  27637.75    -0.11     608.98     0.07
    39   3.9700  27637.74    -0.06     608.95     0.05
    40   3.9837  27404.84    -0.04     581.20    -0.18
    41   4.0327  26300.14     0.32     505.29     0.02

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.

13RW124    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.776    36.783    36.769
ecceobj         0.073     0.073     0.073
incobj          4.808     4.809     4.809
qmin           33.421    33.389    33.414
qmax           39.903    39.867    39.872
amean          36.485    36.485    36.485
amin           36.144    36.126    36.134
amax           36.867    36.861    36.853
emean           0.061     0.060     0.061
emin            0.039     0.038     0.039
emax            0.084     0.083     0.084
imean           4.445     4.321     4.563
imin            2.611     2.635     2.590
imax            6.010     5.917     6.100
excite_mean     0.099     0.098     0.101
fracstop        1.000     1.000     1.000
cjmean          3.016     3.017     3.016

libcent 0       180.3     182.0     179.9
libamp  0        82.0      86.6      78.8
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       180.2     180.3     179.8
kozaiamp        179.9     179.9     180.0