Orbit Fit and Astrometric record for 17CL54

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: 17CL54    
# Created Wed Dec 25 02:10:52 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     33 observations of     33
# Arc:   9.20y
# First observation: 2012/01/06
#  Last observation: 2021/03/21
# Chi-squared of fit:    20.78 DOF:     60 RMS:  0.14
# Min/Max residuals:    -0.31    0.25
# Exact a, adot, b, bdot, g, gdot:
  2.195739E-05  3.815337E-02  1.737118E-06  4.720426E-03  2.771848E-02 -5.063639E-03
# Covariance matrix:
  3.8406E-13 -1.1281E-13  9.3473E-15 -7.9433E-15  3.1457E-14 -2.2217E-13
 -1.1281E-13  7.1186E-14 -9.6804E-15  7.8366E-15  3.3465E-14  2.1448E-13
  9.3473E-15 -9.6804E-15  2.9657E-13 -5.4632E-14 -5.9431E-15 -3.4552E-14
 -7.9433E-15  7.8366E-15 -5.4632E-14  1.2259E-14  4.0035E-15  2.8090E-14
  3.1457E-14  3.3465E-14 -5.9431E-15  4.0035E-15  1.5741E-13  9.9323E-14
 -2.2217E-13  2.1448E-13 -3.4552E-14  2.8090E-14  9.9323E-14  7.7030E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -13.525797  140.404890    0.565101   -0.188020   -0.781863  2455932.715447
# Heliocentric elements and errors
Epoch:              2455932.5000  =  2012/01/06
Mean Anomaly:          359.04178 +/-     0.001
Argument of Peri:      315.35239 +/-     0.003
Long of Asc Node:      201.55592 +/-     0.000
Inclination:            14.90522 +/-     0.000
Eccentricity:         0.83002311 +/-    0.0001
Semi-Major Axis:    211.93766295 +/-    0.0937
Time of Perihelion: 2458932.1774 +/-     745.7
Perihelion:          36.02450438 +/-    0.0222
Aphelion:           387.85082151 +/-    0.1722
Period (y)             3085.4635 +/-      2.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.28552328 +/-    0.0004
Ecliptic Y           23.30497434 +/-    0.0003
Ecliptic Z           -8.43780255 +/-    0.0001
Ecliptic XDOT        -0.00211554 +/-    0.0000
Ecliptic YDOT        -0.00313974 +/-    0.0000
Ecliptic ZDOT         0.00057038 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.86226436 +/-    0.0004
Geocenter to KBO     36.07714382 +/-    0.0005
# Hcoef:  7.61

The following table shows the complete astrometric record for 17CL54. 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 (17CL54) followed by the observatory code and reference code for the source of the astrometry.

2012 01  06.214681 09 14 12.91   +01 49 43.3         17CL54    309  C~81Bq      
2012 01  06.221215 09 14 12.88   +01 49 43.1         17CL54    309  C~81Bq      
2012 01  06.227740 09 14 12.85   +01 49 43.3         17CL54    309  C~81Bq      
2013 04  02.025302 09 16 49.70   +02 02 36.1         17CL54    W84  C~81Bq      
2013 04  03.053027 09 16 47.46   +02 03 08.9         17CL54    W84  C~81Bq      
2016 01  14.300633 09 48 58.567  +00 08 56.26  23.2r 17CL54    W84  C~8HKI      
2017 01  26.54133  09 57 02.85   -00 13 56.4   22.9z 17CL54    T09  C~7xTt      
2017 01  26.54471  09 57 02.85   -00 13 56.1   23.1z 17CL54    T09  C~7xTt      
2017 01  26.55620  09 57 02.81   -00 13 55.9   23.0z 17CL54    T09  C~7xTt      
2017 01  26.56693  09 57 02.75   -00 13 55.7   22.9z 17CL54    T09  C~7xTt      
2017 01  26.59916  09 57 02.61   -00 13 55.2   22.9z 17CL54    T09  C~7xTt      
2017 01  26.60996  09 57 02.56   -00 13 54.7   22.8z 17CL54    T09  C~7xTt      
2017 02  02.37981  09 56 31.25   -00 11 29.6   23.6r 17CL54    T09  C~7xTt      
2017 02  02.39743  09 56 31.15   -00 11 29.6   23.5r 17CL54    T09  C~7xTt      
2017 02  02.41063  09 56 31.09   -00 11 29.1   23.2r 17CL54    T09  C~7xTt      
2017 02  02.42609  09 56 31.03   -00 11 28.6   23.3r 17CL54    T09  C~7xTt      
2017 02  02.56306  09 56 30.36   -00 11 25.5   22.8i 17CL54    T09  C~7xTt      
2017 03  06.37764  09 53 57.01   +00 04 28.8   22.8i 17CL54    T09  C~7xTt      
2017 03  06.44451  09 53 56.70   +00 04 30.8   22.9i 17CL54    T09  C~7xTt      
2017 03  06.44986  09 53 56.69   +00 04 31.3   22.9i 17CL54    T09  C~7xTt      
2017 03  06.45523  09 53 56.65   +00 04 31.3   22.9i 17CL54    T09  C~7xTt      
2017 03  06.46066  09 53 56.64   +00 04 31.5   22.8i 17CL54    T09  C~7xTt      
2017 04  27.32671  09 51 28.71   +00 33 15.2   23.0i 17CL54    T09  C~7xTt      
2017 04  27.33527  09 51 28.71   +00 33 15.2   23.0i 17CL54    T09  C~7xTt      
2017 04  27.33816  09 51 28.71   +00 33 15.5   23.1i 17CL54    T09  C~7xTt      
2017 04  27.34103  09 51 28.68   +00 33 15.4   23.1i 17CL54    T09  C~7xTt      
2018 01  17.45108  10 06 43.69   -00 42 52.0   22.8i 17CL54    T09  C~81Bq      
2018 01  17.47263  10 06 43.60   -00 42 51.8   22.9i 17CL54    T09  C~81Bq      
2018 01  17.52919  10 06 43.39   -00 42 50.8   23.0i 17CL54    T09  C~81Bq      
2018 01  17.56419  10 06 43.23   -00 42 50.3   22.9i 17CL54    T09  C~81Bq      
2018 01  17.56687  10 06 43.24   -00 42 50.3   22.9i 17CL54    T09  C~81Bq      
2018 01  17.59100  10 06 43.14   -00 42 49.8   22.9i 17CL54    T09  C~81Bq      
2021 03  21.150401 10 29 07.83   -01 32 10.6         17CL54    W84  C~81Bq      

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     0.02       0.00     0.20
     2   0.0000      0.00    -0.02       0.00    -0.05
     3   0.0000      0.00    -0.07       0.00     0.09
     4   1.2370      0.00     0.11       0.00    -0.31
     5   1.2398      0.00    -0.09       0.00    -0.05
     6   4.0221      0.00     0.07       0.00    -0.19
     7   5.0577      0.00    -0.17       0.00    -0.13
     8   5.0577      0.00     0.06       0.00     0.10
     9   5.0577      0.00     0.25       0.00     0.08
    10   5.0578      0.00     0.09       0.00     0.07
    11   5.0579      0.00     0.21       0.00    -0.06
    12   5.0579      0.00     0.20       0.00     0.23
    13   5.0764      0.00     0.13       0.00     0.18
    14   5.0765      0.00    -0.10       0.00    -0.23
    15   5.0765      0.00    -0.04       0.00    -0.04
    16   5.0766      0.00     0.18       0.00     0.10
    17   5.0769      0.00     0.06       0.00     0.00
    18   5.1640      0.00    -0.22       0.00     0.17
    19   5.1642      0.00    -0.20       0.00    -0.15
    20   5.1642      0.00     0.02       0.00     0.17
    21   5.1642      0.00    -0.21       0.00    -0.02
    22   5.1643      0.00     0.02       0.00    -0.01
    23   5.3063      0.00     0.01       0.00     0.07
    24   5.3063      0.00     0.10       0.00    -0.16
    25   5.3063      0.00     0.13       0.00     0.07
    26   5.3063      0.00    -0.29       0.00    -0.11
    27   6.0321      0.00    -0.11       0.00    -0.10
    28   6.0322      0.00    -0.18       0.00    -0.19
    29   6.0323      0.00     0.05       0.00     0.06
    30   6.0324      0.00    -0.25       0.00     0.09
    31   6.0324      0.00     0.06       0.00     0.06
    32   6.0325      0.00     0.00       0.00     0.24
    33   9.2045      0.00     0.08       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.

17CL54    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       211.994   211.987   212.001
ecceobj         0.830     0.830     0.830
incobj         14.897    14.897    14.897
qmin           34.146    34.250    34.159
qmax          443.357   457.157   421.510
amean         217.423   224.269   213.507
amin          200.515   207.118   203.479
amax          239.882   246.853   228.824
emean           0.832     0.837     0.831
emin            0.815     0.821     0.818
emax            0.848     0.852     0.842
imean          16.018    16.012    15.343
imin           14.870    14.870    14.870
imax           16.844    16.841    16.104
excite_mean     0.877     0.882     0.872
fracstop        1.000     1.000     1.000
cjmean          3.000     3.001     3.001

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       231.5     252.0     332.2
kozaiamp        180.0     180.0      20.3