Orbit Fit and Astrometric record for 19SQ247

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: 19SQ247   
# Created Tue Apr  1 01:11:16 2025
# Orbit generated from Bernstein formalism
# Fitting     17 observations of     17
# Arc:  32.11d
# First observation: 2019/09/29
#  Last observation: 2019/10/31
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.017613   0.000000   0.009492   0.022936   0.000000
# Chi-squared of fit:     5.67 DOF:     28 RMS:  0.10
# Min/Max residuals:    -0.29    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.282164E-05  1.827754E-02  6.631781E-06  9.510713E-03  2.301167E-02  3.612937E-03
# Covariance matrix:
  6.6410E-13  4.3403E-10  5.9897E-14  2.2747E-11  7.4194E-11  1.7420E-09
  4.3403E-10  6.3899E-07  8.7156E-11  3.2645E-08  1.0695E-07  1.8336E-06
  5.9897E-14  8.7156E-11  3.6861E-13  8.7300E-14  1.4601E-11  2.5706E-10
  2.2747E-11  3.2645E-08  8.7300E-14  1.7570E-09  5.5074E-09  1.1931E-07
  7.4194E-11  1.0695E-07  1.4601E-11  5.5074E-09  1.8003E-08  3.6632E-07
  1.7420E-09  1.8336E-06  2.5706E-10  1.1931E-07  3.6632E-07  4.0904E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
  -16.920642   31.430669    0.426479   -0.263164   -0.865046  2458755.941191
# Heliocentric elements and errors
Epoch:              2458750.5000  =  2019/09/24
Mean Anomaly:          103.55472 +/-    65.609
Argument of Peri:      204.30370 +/-    52.993
Long of Asc Node:       59.77695 +/-     1.032
Inclination:            31.60981 +/-     0.840
Eccentricity:         0.18450704 +/-    0.2264
Semi-Major Axis:     41.30980159 +/-    4.6083
Time of Perihelion: 2430854.2716 +/-   17046.6
Perihelion:          33.68785239 +/-   10.0809
Aphelion:            48.93175079 +/-   10.8304
Period (y)              265.5143 +/-     44.43
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.47142472 +/-    0.2069
Ecliptic Y           21.78047864 +/-    0.1264
Ecliptic Z          -12.64751808 +/-    0.0737
Ecliptic XDOT        -0.00049357 +/-    0.0006
Ecliptic YDOT         0.00224264 +/-    0.0004
Ecliptic ZDOT         0.00095723 +/-    0.0002
# Distances at JD0 (AU)
Heliocenter to KBO   44.32283593 +/-    0.1824
Geocenter to KBO     43.45620813 +/-    0.2534
# Hcoef:  8.77

The following table shows the complete astrometric record for 19SQ247. 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 (19SQ247) followed by the observatory code and reference code for the source of the astrometry.

2019 09  29.44039  02 20 21.38   -03 55 57.3   25.5r 19SQ247   T09  C~85Kh      
2019 09  29.46287  02 20 21.29   -03 55 57.8   25.5r 19SQ247   T09  C~85Kh      
2019 09  29.50563  02 20 21.13   -03 55 59.0   25.5i 19SQ247   T09  C~85Kh      
2019 09  29.52392  02 20 21.05   -03 55 59.4   25.5i 19SQ247   T09  C~85Kh      
2019 10  27.28540  02 18 19.44   -04 06 30.7   24.9r 19SQ247   T09  C~85Kh      
2019 10  27.29655  02 18 19.38   -04 06 30.9   25.1r 19SQ247   T09  C~85Kh      
2019 10  27.41777  02 18 18.81   -04 06 33.0   24.8i 19SQ247   T09  C~85Kh      
2019 10  27.43602  02 18 18.73   -04 06 33.4   24.5i 19SQ247   T09  C~85Kh      
2019 10  27.45429  02 18 18.63   -04 06 33.6   24.9i 19SQ247   T09  C~85Kh      
2019 10  27.45813  02 18 18.60   -04 06 33.6   24.6i 19SQ247   T09  C~85Kh      
2019 10  27.47257  02 18 18.55   -04 06 34.1   24.6i 19SQ247   T09  C~85Kh      
2019 10  31.48092  02 17 59.82   -04 07 43.2   24.8z 19SQ247   T09  C~85Kh      
2019 10  31.48475  02 17 59.80   -04 07 43.4   24.7z 19SQ247   T09  C~85Kh      
2019 10  31.48859  02 17 59.78   -04 07 43.5   25.5z 19SQ247   T09  C~85Kh      
2019 10  31.50302  02 17 59.71   -04 07 43.9   24.9z 19SQ247   T09  C~85Kh      
2019 10  31.50685  02 17 59.71   -04 07 44.1   25.4z 19SQ247   T09  C~85Kh      
2019 10  31.55090  02 17 59.49   -04 07 44.6   24.7z 19SQ247   T09  C~85Kh      

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    -0.05       0.00    -0.02
     2   0.0001     -1.44    -0.03      -0.01     0.06
     3   0.0002     -4.10     0.08      -0.33    -0.07
     4   0.0002     -5.36     0.01      -0.29     0.03
     5   0.0762  -1931.31     0.06      24.54    -0.11
     6   0.0763  -1932.22    -0.05      24.66    -0.07
     7   0.0766  -1940.96     0.05      25.58     0.01
     8   0.0766  -1942.22     0.12      25.61    -0.08
     9   0.0767  -1943.70    -0.02      25.93     0.11
    10   0.0767  -1944.12    -0.17      26.08     0.23
    11   0.0767  -1944.99     0.01      25.86    -0.08
    12   0.0877  -2232.06     0.07      56.03     0.22
    13   0.0877  -2232.41    -0.00      55.94     0.10
    14   0.0877  -2232.72    -0.04      55.95     0.07
    15   0.0878  -2233.85    -0.12      55.93    -0.07
    16   0.0878  -2233.91     0.09      55.74    -0.29
    17   0.0879  -2237.18     0.00      56.39    -0.03

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.

19SQ247    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0