Orbit Fit and Astrometric record for 11RS

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: 11RS      
# Created Thu Mar 28 01:14:06 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     52 observations of     52
# Arc:  20.35y
# First observation: 2003/07/04
#  Last observation: 2023/11/08
# Chi-squared of fit:   107.15 DOF:     98 RMS:  0.25
# Min/Max residuals:    -1.38    0.56
# Exact a, adot, b, bdot, g, gdot:
  2.083370E-05  5.760179E-02  7.161567E-06  1.617786E-02  4.156579E-02 -1.635323E-02
# Covariance matrix:
  1.9443E-12 -6.9744E-09 -2.7099E-13 -2.1045E-09 -1.3147E-12 -6.0901E-09
 -6.9744E-09  3.0386E-05  1.1857E-09  9.2097E-06  5.7735E-09  2.6650E-05
 -2.7099E-13  1.1857E-09  4.0518E-13  3.2341E-10  2.2270E-13  1.0410E-09
 -2.1045E-09  9.2097E-06  3.2341E-10  2.8160E-06  1.7517E-09  8.0834E-06
 -1.3147E-12  5.7735E-09  2.2270E-13  1.7517E-09  1.3951E-12  5.0402E-09
 -6.0901E-09  2.6650E-05  1.0410E-09  8.0834E-06  5.0402E-09  2.3393E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.352484  -24.375854    0.819291   -0.046244   -0.607669  2452825.101674
# Heliocentric elements and errors
Epoch:              2452824.5000  =  2003/07/04
Mean Anomaly:          340.54478 +/-     0.004
Argument of Peri:       40.37419 +/-     0.000
Long of Asc Node:      348.41900 +/-     0.000
Inclination:            16.30120 +/-     0.000
Eccentricity:         0.47353056 +/-    0.0001
Semi-Major Axis:     40.30497353 +/-    0.0000
Time of Perihelion: 2457875.4148 +/-       1.1
Perihelion:          21.21933702 +/-    0.0058
Aphelion:            59.39061003 +/-    0.0058
Period (y)              255.8858 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.06508407 +/-    0.0000
Ecliptic Y          -10.89412015 +/-    0.0000
Ecliptic Z           -1.82563609 +/-    0.0000
Ecliptic XDOT         0.00065558 +/-    0.0000
Ecliptic YDOT         0.00386042 +/-    0.0000
Ecliptic ZDOT         0.00114446 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   24.67571560 +/-    0.0000
Geocenter to KBO     24.05842110 +/-    0.0000
# Hcoef:  8.40

The following table shows the complete astrometric record for 11RS. 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 (11RS) followed by the observatory code and reference code for the source of the astrometry.

2003 07  04.600931 22 36 16.55   -13 29 34.9   22.3r 11RS      T14  C~71wr      
2003 07  04.609523 22 36 16.51   -13 29 35.0         11RS      T14  C~71wr      
2003 07  05.593751 22 36 13.04   -13 29 54.8   22.3r 11RS      T14  C~71wr      
2003 07  05.602356 22 36 13.01   -13 29 55.0   22.3r 11RS      T14  C~71wr      
2003 07  05.610911 22 36 12.99   -13 29 55.0   22.3r 11RS      T14  C~71wr      
2008 09  06.29889  23 29 15.72   -02 13 44.7   21.9V 11RS      G96  C~71wr      
2008 09  06.30469  23 29 15.68   -02 13 45.3   21.6V 11RS      G96  C~71wr      
2008 09  06.31046  23 29 15.54   -02 13 45.9   21.8V 11RS      G96  C~71wr      
2008 09  06.31615  23 29 15.46   -02 13 46.1   22.0V 11RS      G96  C~71wr      
2009 01  16.057730 23 24 55.14   -02 20 41.8   22.1r 11RS      645  C~71wr      
2009 01  16.058165 23 24 55.15   -02 20 41.8   21.8i 11RS      645  C~71wr      
2009 01  16.060653 23 24 55.16   -02 20 41.7   22.6g 11RS      645  C~71wr      
2010 09  16.44781  23 54 03.34   +03 01 55.1   21.9w 11RS      F51  C~77oC      
2010 09  16.45894  23 54 03.25   +03 01 54.7   21.7w 11RS      F51  C~77oC      
2010 09  16.47003  23 54 03.16   +03 01 54.2   21.5w 11RS      F51  C~77oC      
2010 10  03.38129  23 51 48.01   +02 50 41.6   21.9w 11RS      F51  C~77oC      
2010 10  03.39456  23 51 47.91   +02 50 41.0   21.9w 11RS      F51  C~77oC      
2010 10  03.40914  23 51 47.79   +02 50 40.3   22.0w 11RS      F51  C~77oC      
2010 10  03.42237  23 51 47.68   +02 50 39.9   22.1w 11RS      F51  C~77oC      
2010 10  14.29484  23 50 25.67   +02 43 30.3   21.3i 11RS      F51  C~77oC      
2010 10  14.30641  23 50 25.59   +02 43 29.9   21.3i 11RS      F51  C~77oC      
2011 09  04.42452  00 09 14.252  +05 55 04.51  22.4w 11RS      F51  C~0Y0s      
2011 09  04.43949  00 09 14.118  +05 55 03.89  22.2w 11RS      F51  C~0Y0s      
2011 09  04.46930  00 09 13.886  +05 55 03.16  22.4w 11RS      F51  C~0Y0s      
2011 09  06.276089 00 09 00.34   +05 54 08.0   22.0V 11RS      H21  C~0Y0s      
2011 09  06.290836 00 09 00.24   +05 54 07.5   22.0V 11RS      H21  C~0Y0s      
2011 09  06.306908 00 09 00.12   +05 54 06.7   21.8V 11RS      H21  C~0Y0s      
2011 09  06.350824 00 08 59.84   +05 54 05.3         11RS      568  C~4qFT      
2011 09  06.352075 00 08 59.83   +05 54 05.3         11RS      568  C~4qFT      
2011 09  06.353329 00 08 59.83   +05 54 05.3         11RS      568  C~4qFT      
2011 09  06.354581 00 08 59.82   +05 54 05.2         11RS      568  C~4qFT      
2011 09  06.355834 00 08 59.81   +05 54 05.1         11RS      568  C~4qFT      
2011 09  06.357089 00 08 59.80   +05 54 05.2         11RS      568  C~4qFT      
2011 09  06.359002 00 08 59.79   +05 54 05.2         11RS      568  C~4qFT      
2012 10  04.45957  00 19 07.33   +08 24 42.8   21.2i 11RS      F51  C~77oC      
2012 10  04.47185  00 19 07.23   +08 24 42.3   21.3i 11RS      F51  C~77oC      
2012 10  09.33996  00 18 27.63   +08 21 17.8   21.8w 11RS      F51  C~77oC      
2012 10  09.35406  00 18 27.51   +08 21 17.2   21.7w 11RS      F51  C~77oC      
2012 10  09.36823  00 18 27.40   +08 21 16.6   21.6w 11RS      F51  C~77oC      
2012 10  09.38253  00 18 27.29   +08 21 16.0   21.8w 11RS      F51  C~77oC      
2012 11  04.242556 00 15 21.213  +08 03 35.48  21.8w 11RS      F51  c~71wr      
2012 11  04.256628 00 15 21.110  +08 03 34.85  22.0w 11RS      F51  c~71wr      
2012 11  04.27077  00 15 21.02   +08 03 34.5   21.7w 11RS      F51  C~77oC      
2012 11  04.284896 00 15 20.925  +08 03 34.01  22.1w 11RS      F51  c~71wr      
2017 07  21.445406 01 41 13.72   +21 55 31.0   21.7z 11RS      W84  C~71wr      
2017 10  25.205186 01 33 11.87   +22 02 16.4   22.3g 11RS      W84  C~71wr      
2018 10  15.168825 01 51 46.64   +24 41 22.6   21.3z 11RS      W84  C~71wr      
2018 11  03.229395 01 48 52.51   +24 29 38.6         11RS      W84  C~71wr      
2023 11  08.226970 03 20 52.271  +34 46 15.82  22.2G 11RS      V00  C~7R6i      
2023 11  08.235900 03 20 52.206  +34 46 15.78  22.0G 11RS      V00  C~7R6i      
2023 11  08.242545 03 20 52.130  +34 46 15.31  22.4G 11RS      V00  C~7R6i      
2023 11  08.248049 03 20 52.033  +34 46 15.02  21.9G 11RS      V00  C~7R6i      

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     0.29       0.00    -0.11
     2   0.0000      0.00     0.15       0.00    -0.04
     3   0.0027      0.00    -0.18       0.00    -0.01
     4   0.0027      0.00    -0.15       0.00    -0.03
     5   0.0028      0.00     0.03       0.00     0.14
     6   5.1764      0.00     0.47       0.00     0.36
     7   5.1765      0.00     0.56       0.00    -0.03
     8   5.1765      0.00    -0.85       0.00    -0.41
     9   5.1765      0.00    -1.38       0.00    -0.40
    10   5.5372      0.00     0.25       0.00     0.03
    11   5.5372      0.00     0.36       0.00     0.00
    12   5.5372      0.00     0.23       0.00    -0.04
    13   7.2029      0.00    -0.02       0.00     0.06
    14   7.2029      0.00    -0.00       0.00     0.09
    15   7.2029      0.00     0.00       0.00     0.01
    16   7.2492      0.00     0.17       0.00     0.05
    17   7.2493      0.00     0.26       0.00    -0.02
    18   7.2493      0.00     0.21       0.00    -0.13
    19   7.2493      0.00     0.15       0.00     0.00
    20   7.2791      0.00    -0.05       0.00    -0.05
    21   7.2791      0.00     0.03       0.00    -0.01
    22   8.1693      0.00     0.12       0.00     0.16
    23   8.1693      0.00    -0.19       0.00    -0.01
    24   8.1694      0.00    -0.28       0.00     0.15
    25   8.1743      0.00    -0.63       0.00     0.31
    26   8.1744      0.00    -0.43       0.00     0.26
    27   8.1744      0.00    -0.38       0.00    -0.03
    28   8.1745      0.00     0.08       0.00    -0.18
    29   8.1745      0.00     0.07       0.00    -0.15
    30   8.1745      0.00     0.21       0.00    -0.11
    31   8.1745      0.00     0.21       0.00    -0.17
    32   8.1746      0.00     0.20       0.00    -0.23
    33   8.1746      0.00     0.20       0.00    -0.09
    34   8.1746      0.00     0.27       0.00    -0.03
    35   9.2535      0.00     0.01       0.00     0.07
    36   9.2536      0.00     0.05       0.00     0.08
    37   9.2669      0.00     0.03       0.00     0.11
    38   9.2669      0.00    -0.03       0.00     0.11
    39   9.2670      0.00     0.07       0.00     0.11
    40   9.2670      0.00     0.18       0.00     0.11
    41   9.3378      0.00     0.16       0.00     0.08
    42   9.3379      0.00    -0.09       0.00    -0.03
    43   9.3379      0.00    -0.13       0.00     0.15
    44   9.3379      0.00    -0.26       0.00     0.18
    45  14.0475      0.00     0.02       0.00    -0.18
    46  14.3097      0.00    -0.13       0.00    -0.04
    47  15.2815      0.00    -0.19       0.00    -0.14
    48  15.3337      0.00     0.06       0.00    -0.17
    49  20.3467      0.00    -0.02       0.00     0.13
    50  20.3467      0.00     0.36       0.00     0.26
    51  20.3467      0.00     0.23       0.00    -0.08
    52  20.3467      0.00    -0.39       0.00    -0.26

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.

11RS    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        40.837    40.837    40.838
ecceobj         0.479     0.479     0.479
incobj         16.247    16.247    16.247
qmin           21.042    21.041    19.760
qmax           60.470    60.568    60.431
amean          40.686    40.127    39.756
amin           40.083    38.585    37.076
amax           41.751    41.021    41.319
emean           0.454     0.450     0.462
emin            0.424     0.401     0.445
emax            0.480     0.480     0.492
imean          19.030    19.021    17.721
imin           17.056    17.056    15.035
imax           21.449    21.964    19.442
excite_mean     0.560     0.556     0.554
fracstop        0.022     0.022     0.061
cjmean          2.691     2.693     2.692

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        59.3      60.6      94.3
kozaiamp         16.6      19.6      62.8