Orbit Fit and Astrometric record for 13RO124

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: 13RO124   
# Created Mon Dec  6 02:11:48 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     37 observations of     37
# Arc:   6.94y
# First observation: 2013/09/02
#  Last observation: 2020/08/12
# Chi-squared of fit:     7.88 DOF:     68 RMS:  0.08
# Min/Max residuals:    -0.21    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.486316E-05  2.292901E-02 -6.406085E-06 -1.047743E-02  2.571796E-02 -1.653400E-03
# Covariance matrix:
  2.7273E-13 -4.8405E-14  3.3989E-16 -3.3044E-16  1.7918E-13  2.0995E-15
 -4.8405E-14  4.3803E-14  1.2650E-14 -1.5963E-14  1.8409E-14  2.6637E-13
  3.3989E-16  1.2650E-14  1.2367E-13 -3.6614E-14  1.7115E-14  1.1179E-13
 -3.3044E-16 -1.5963E-14 -3.6614E-14  1.9777E-14 -2.1468E-14 -1.4096E-13
  1.7918E-13  1.8409E-14  1.7115E-14 -2.1468E-14  2.6050E-13  3.5373E-13
  2.0995E-15  2.6637E-13  1.1179E-13 -1.4096E-13  3.5373E-13  2.3486E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.477588    0.982612    0.367764    0.007925   -0.940724  2456537.758808
# Heliocentric elements and errors
Epoch:              2456538.5000  =  2013/09/03
Mean Anomaly:          254.85030 +/-     0.053
Argument of Peri:      292.68421 +/-     0.044
Long of Asc Node:      181.47660 +/-     0.000
Inclination:            24.57945 +/-     0.000
Eccentricity:         0.08058624 +/-    0.0001
Semi-Major Axis:     38.78202169 +/-    0.0029
Time of Perihelion: 2482304.6557 +/-      14.7
Perihelion:          35.65672431 +/-    0.0034
Aphelion:            41.90731906 +/-    0.0038
Period (y)              241.5204 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.82293604 +/-    0.0008
Ecliptic Y            0.31826656 +/-    0.0000
Ecliptic Z            0.32385087 +/-    0.0000
Ecliptic XDOT        -0.00021473 +/-    0.0000
Ecliptic YDOT         0.00243664 +/-    0.0000
Ecliptic ZDOT        -0.00111668 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.82557031 +/-    0.0008
Geocenter to KBO     38.88340253 +/-    0.0008
# Hcoef:  7.36

The following table shows the complete astrometric record for 13RO124. 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 (13RO124) followed by the observatory code and reference code for the source of the astrometry.

2013 09  02.25803  00 02 50.778  +00 49 44.51  24.6g 13RO124   W84  C~4yQs      
2013 09  11.30133  00 02 11.150  +00 44 30.67  23.8g 13RO124   W84  C~4yQs      
2013 09  11.30133  00 02 11.15   +00 44 30.7   23.9g 13RO124   W84  C~3clA      
2013 10  12.11906  23 59 51.131  +00 25 59.59  23.0i 13RO124   W84  C~4yQs      
2013 10  13.10922  23 59 46.866  +00 25 25.19  23.6i 13RO124   W84  C~4yQs      
2013 10  28.07069  23 58 47.487  +00 17 17.73  23.3r 13RO124   W84  C~4yQs      
2013 11  22.06260  23 57 38.869  +00 06 59.99  23.3r 13RO124   W84  C~4yQs      
2013 11  22.06260  23 57 38.87   +00 07 00.0   23.4r 13RO124   W84  C~3clA      
2013 11  23.08855  23 57 37.088  +00 06 41.42  23.3r 13RO124   W84  C~4yQs      
2013 11  23.08855  23 57 37.09   +00 06 41.4   23.3r 13RO124   W84  C~3clA      
2014 10  23.20146  00 04 52.536  +00 18 09.95  23.0i 13RO124   W84  C~4yQs      
2014 11  14.09991  00 03 39.842  +00 08 01.90  22.8z 13RO124   W84  C~4yQs      
2016 09  10.32821  00 19 39.212  +00 39 32.04  22.7i 13RO124   W84  C~4yQs      
2016 09  10.32821  00 19 39.21   +00 39 32.1   22.7i 13RO124   W84  C~3clA      
2016 09  10.32957  00 19 39.206  +00 39 31.84  23.0r 13RO124   W84  C~4yQs      
2016 09  10.32957  00 19 39.21   +00 39 31.9   23.1r 13RO124   W84  C~3clA      
2016 09  10.33095  00 19 39.198  +00 39 31.84  23.3g 13RO124   W84  C~4yQs      
2016 09  10.33095  00 19 39.20   +00 39 31.8   23.5g 13RO124   W84  C~3clA      
2016 10  02.17611  00 17 59.083  +00 26 16.04  23.2i 13RO124   W84  C~4yQs      
2016 10  02.17611  00 17 59.08   +00 26 16.0   23.3i 13RO124   W84  C~3clA      
2016 10  02.17749  00 17 59.072  +00 26 16.19  23.4r 13RO124   W84  C~4yQs      
2016 10  02.17749  00 17 59.07   +00 26 16.2   23.2r 13RO124   W84  C~3clA      
2016 10  02.17886  00 17 59.081  +00 26 16.12  23.4g 13RO124   W84  C~4yQs      
2016 11  18.06482  00 14 58.905  +00 02 38.78  23.3i 13RO124   W84  C~4yQs      
2016 11  18.06482  00 14 58.91   +00 02 38.7   23.7i 13RO124   W84  C~3clA      
2016 11  18.06619  00 14 58.907  +00 02 38.91  23.4r 13RO124   W84  C~4yQs      
2016 11  18.06619  00 14 58.91   +00 02 38.9   23.5r 13RO124   W84  C~3clA      
2016 11  18.06758  00 14 58.896  +00 02 38.74  24.1g 13RO124   W84  C~4yQs      
2016 12  05.09585  00 14 28.824  -00 01 47.92  22.9z 13RO124   W84  C~4yQs      
2017 09  27.24362  00 24 14.065  +00 27 31.55  23.1i 13RO124   W84  C~4yQs      
2017 09  27.24501  00 24 14.038  +00 27 31.66  23.3r 13RO124   W84  C~4yQs      
2017 09  27.24640  00 24 14.044  +00 27 31.44  23.4g 13RO124   W84  C~4yQs      
2017 10  27.16579  00 22 00.453  +00 10 18.09  22.8z 13RO124   W84  C~4yQs      
2018 09  09.32865  00 31 28.361  +00 36 39.39  23.2r 13RO124   W84  C~4yQs      
2018 09  09.33003  00 31 28.359  +00 36 39.24  22.8i 13RO124   W84  C~4yQs      
2020 08  12.371510 00 44 50.387  +00 47 32.61  23.2G 13RO124   G37  C~441U      
2020 08  12.442440 00 44 50.208  +00 47 30.72        13RO124   G37  C~441U      

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    -0.14       0.00    -0.07
     2   0.0248      0.00     0.03       0.00     0.10
     3   0.0248      0.00     0.03       0.00     0.13
     4   0.1091      0.00     0.08       0.00     0.04
     5   0.1118      0.00    -0.04       0.00    -0.05
     6   0.1528      0.00     0.10       0.00    -0.10
     7   0.2212      0.00     0.00       0.00    -0.01
     8   0.2212      0.00     0.02       0.00     0.00
     9   0.2240      0.00    -0.02       0.00     0.02
    10   0.2240      0.00    -0.05       0.00     0.04
    11   1.1388      0.00     0.10       0.00    -0.05
    12   1.1987      0.00    -0.06       0.00     0.14
    13   3.0228      0.00    -0.02       0.00     0.15
    14   3.0228      0.00     0.01       0.00     0.09
    15   3.0228      0.00     0.01       0.00    -0.06
    16   3.0228      0.00     0.07       0.00    -0.00
    17   3.0228      0.00     0.01       0.00    -0.06
    18   3.0228      0.00    -0.02       0.00    -0.02
    19   3.0826      0.00    -0.06       0.00    -0.21
    20   3.0826      0.00    -0.02       0.00    -0.17
    21   3.0826      0.00    -0.11       0.00     0.04
    22   3.0826      0.00    -0.08       0.00     0.03
    23   3.0826      0.00     0.15       0.00     0.01
    24   3.2110      0.00     0.08       0.00    -0.16
    25   3.2110      0.00     0.00       0.00    -0.08
    26   3.2110      0.00     0.13       0.00     0.07
    27   3.2110      0.00     0.09       0.00     0.08
    28   3.2110      0.00    -0.03       0.00    -0.06
    29   3.2576      0.00    -0.09       0.00     0.05
    30   4.0684      0.00     0.17       0.00    -0.04
    31   4.0684      0.00    -0.13       0.00     0.12
    32   4.0684      0.00     0.06       0.00    -0.05
    33   4.1503      0.00    -0.11       0.00     0.12
    34   5.0187      0.00     0.00       0.00     0.04
    35   5.0187      0.00     0.06       0.00    -0.06
    36   6.9435      0.00    -0.02       0.00     0.03
    37   6.9437      0.00     0.00       0.00     0.06

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.

13RO124    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        38.945    38.945    38.945
ecceobj         0.078     0.078     0.078
incobj         24.507    24.507    24.507
qmin           35.157    35.036    35.065
qmax           42.589    42.713    42.676
amean          38.765    38.781    38.780
amin           38.466    38.473    38.467
amax           39.096    39.104    39.087
emean           0.075     0.078     0.077
emin            0.061     0.062     0.062
emax            0.091     0.093     0.093
imean          24.737    24.733    24.736
imin           24.088    24.085    24.102
imax           25.410    25.386    25.408
excite_mean     0.425     0.426     0.426
fracstop        1.000     1.000     1.000
cjmean          2.832     2.832     2.832

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       184.4     183.0     185.3
kozaiamp        180.0     180.0     179.9