Orbit Fit and Astrometric record for 19WV35

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: 19WV35    
# Created Tue Apr  1 01:11:17 2025
# Orbit generated from Bernstein formalism
# Fitting     33 observations of     33
# Arc:  83.84d
# First observation: 2019/09/29
#  Last observation: 2019/12/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000056   0.023158   0.000055   0.005789   0.022508   0.000000
# Chi-squared of fit:   313.44 DOF:     60 RMS:  0.54
# Min/Max residuals:    -2.57    0.89
# Exact a, adot, b, bdot, g, gdot:
  1.090193E-05  1.821058E-02  3.397655E-07  6.384523E-03  2.179865E-02  4.543496E-03
# Covariance matrix:
  6.0790E-13 -5.4440E-12 -4.8588E-14  7.5021E-13  5.2855E-13  2.5173E-10
 -5.4440E-12  1.4795E-09  1.7295E-11 -1.8486E-10  1.9629E-10 -1.4804E-08
 -4.8588E-14  1.7295E-11  5.2206E-13 -3.9794E-12  2.2929E-12 -1.7873E-10
  7.5021E-13 -1.8486E-10 -3.9794E-12  3.5374E-11 -2.3671E-11  2.0872E-09
  5.2855E-13  1.9629E-10  2.2929E-12 -2.3671E-11  2.9934E-11 -1.2016E-09
  2.5173E-10 -1.4804E-08 -1.7873E-10  2.0872E-09 -1.2016E-09  3.1390E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
  -17.529653   32.308527    0.439256   -0.270484   -0.856333  2458756.006423
# Heliocentric elements and errors
Epoch:              2458750.5000  =  2019/09/24
Mean Anomaly:           82.57948 +/-     3.338
Argument of Peri:      208.22212 +/-     1.825
Long of Asc Node:       72.21246 +/-     0.069
Inclination:            25.49145 +/-     0.032
Eccentricity:         0.22631789 +/-    0.0260
Semi-Major Axis:     45.73928731 +/-    0.4954
Time of Perihelion: 2432832.4587 +/-     959.2
Perihelion:          35.38766815 +/-    1.2474
Aphelion:            56.09090646 +/-    1.3335
Period (y)              309.3444 +/-      5.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.96822191 +/-    0.0093
Ecliptic Y           23.48181718 +/-    0.0059
Ecliptic Z          -13.81733187 +/-    0.0035
Ecliptic XDOT        -0.00054993 +/-    0.0001
Ecliptic YDOT         0.00235396 +/-    0.0000
Ecliptic ZDOT         0.00059253 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.73221879 +/-    0.0082
Geocenter to KBO     45.87440545 +/-    0.0115
# Hcoef:  8.91

The following table shows the complete astrometric record for 19WV35. 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 (19WV35) followed by the observatory code and reference code for the source of the astrometry.

2019 09  29.505622 02 24 20.83   -04 13 17.9         19WV35    T09  C~85Km      
2019 09  29.542232 02 24 20.72   -04 13 19.3         19WV35    T09  C~85Km      
2019 10  23.573248 02 22 44.03   -04 22 44.6         19WV35    T09  C~85Km      
2019 10  27.30213  02 22 27.87   -04 23 56.7   25.7r 19WV35    T09  C~8CQ1      
2019 10  27.42875  02 22 27.14   -04 24 00.9   26.1i 19WV35    T09  C~8CQ1      
2019 10  27.46532  02 22 26.96   -04 24 01.0   25.4i 19WV35    T09  C~8CQ1      
2019 10  31.495788 02 22 09.54   -04 25 10.9         19WV35    T09  C~85Km      
2019 10  31.539901 02 22 09.35   -04 25 11.8         19WV35    T09  C~85Km      
2019 11  27.30664  02 20 17.41   -04 29 46.8   25.3i 19WV35    T09  C~85Km      
2019 11  27.31047  02 20 17.38   -04 29 46.6   25.3i 19WV35    T09  C~85Km      
2019 11  27.31430  02 20 17.39   -04 29 47.0   25.3i 19WV35    T09  C~85Km      
2019 11  27.32876  02 20 17.31   -04 29 47.0   24.7i 19WV35    T09  C~85Km      
2019 11  27.33260  02 20 17.30   -04 29 46.8   25.5i 19WV35    T09  C~85Km      
2019 11  27.34361  02 20 17.22   -04 29 46.8   25.1i 19WV35    T09  C~85Km      
2019 11  27.35091  02 20 17.24   -04 29 46.8   25.8i 19WV35    T09  C~85Km      
2019 11  27.35474  02 20 17.21   -04 29 46.8   25.0i 19WV35    T09  C~85Km      
2019 11  27.37303  02 20 17.13   -04 29 47.0   25.8i 19WV35    T09  C~85Km      
2019 11  27.37685  02 20 17.13   -04 29 47.0   25.2i 19WV35    T09  C~85Km      
2019 11  29.32156  02 20 09.79   -04 29 51.8   25.7r 19WV35    T09  C~85Km      
2019 11  29.32540  02 20 09.78   -04 29 51.6   25.9r 19WV35    T09  C~85Km      
2019 11  29.33101  02 20 09.75   -04 29 52.3   24.6r 19WV35    T09  C~85Km      
2019 11  29.35191  02 20 09.68   -04 29 51.6   24.9r 19WV35    T09  C~85Km      
2019 11  29.36609  02 20 09.61   -04 29 52.0   25.3r 19WV35    T09  C~85Km      
2019 12  04.384992 02 19 51.50   -04 29 53.7         19WV35    T09  C~85Km      
2019 12  04.421892 02 19 51.37   -04 29 53.7         19WV35    T09  C~85Km      
2019 12  04.454821 02 19 51.24   -04 29 53.6         19WV35    T09  C~85Km      
2019 12  22.270297 02 18 58.27   -04 27 57.9         19WV35    T09  C~85Km      
2019 12  22.274131 02 18 58.27   -04 27 57.7         19WV35    T09  C~85Km      
2019 12  22.28553  02 18 58.23   -04 27 57.2   25.9r 19WV35    T09  C~8CQ1      
2019 12  22.28936  02 18 58.19   -04 27 57.6   25.6r 19WV35    T09  C~8CQ1      
2019 12  22.30070  02 18 58.17   -04 27 57.6   25.8r 19WV35    T09  C~8CQ1      
2019 12  22.304523 02 18 58.20   -04 27 57.5         19WV35    T09  C~85Km      
2019 12  22.34698  02 18 58.06   -04 27 56.9   26.0i 19WV35    T09  C~8CQ1      

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     0.48       0.00     0.89
     2   0.0001     -2.02     0.67      -0.76     0.34
     3   0.0659  -1554.22     0.51     -45.83    -0.11
     4   0.0761  -1806.09     0.50     -32.38    -0.13
     5   0.0764  -1817.78    -2.51     -32.66    -1.01
     6   0.0765  -1820.35    -2.57     -31.85    -0.38
     7   0.0876  -2089.23     0.43     -10.01     0.14
     8   0.0877  -2092.21     0.46      -9.90    -0.03
     9   0.1610  -3761.61     0.40     293.84    -0.10
    10   0.1610  -3761.96     0.26     294.18     0.18
    11   0.1610  -3761.96     0.48     293.75    -0.31
    12   0.1610  -3763.09     0.16     294.15    -0.15
    13   0.1611  -3763.16     0.30     294.39     0.02
    14   0.1611  -3764.29    -0.22     294.79     0.24
    15   0.1611  -3764.00     0.47     294.69     0.02
    16   0.1611  -3764.43     0.26     294.84     0.10
    17   0.1612  -3765.62     0.09     295.06     0.01
    18   0.1612  -3765.62     0.30     295.06    -0.05
    19   0.1665  -3870.66     0.14     327.40    -0.06
    20   0.1665  -3870.73     0.28     327.64     0.11
    21   0.1665  -3871.39    -0.08     327.13    -0.50
    22   0.1666  -3872.14     0.30     328.14     0.15
    23   0.1666  -3873.26    -0.05     328.12    -0.12
    24   0.1804  -4129.02     0.19     417.46    -0.12
    25   0.1805  -4130.85     0.20     418.12    -0.17
    26   0.1806  -4132.65     0.03     418.86    -0.04
    27   0.2293  -4840.37    -0.14     793.78     0.01
    28   0.2293  -4840.30     0.05     793.97     0.11
    29   0.2294  -4840.70     0.01     794.64     0.51
    30   0.2294  -4841.39    -0.57     794.47     0.25
    31   0.2294  -4841.68    -0.50     794.57     0.08
    32   0.2294  -4841.22     0.07     794.51    -0.07
    33   0.2295  -4842.99    -0.39     795.78     0.20

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.

19WV35    quality flag:2

Type:       SCATNEAR  SCATNEAR  SCATEXTD

axisobj        46.066    47.691    44.958
ecceobj         0.224     0.288     0.160
incobj         25.410    25.448    25.368
qmin           33.695    32.449    36.211
qmax           58.347    64.498    53.448
amean          45.796    47.979    44.670
amin           45.323    46.950    44.292
amax           46.335    48.802    45.092
emean           0.237     0.297     0.168
emin            0.215     0.257     0.151
emax            0.262     0.324     0.186
imean          23.590    23.984    23.795
imin           22.714    23.167    23.290
imax           24.224    25.243    24.275
excite_mean     0.465     0.504     0.437
fracstop        1.000     1.000     1.000
cjmean          2.854     2.830     2.871

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       181.5     188.4     183.4
kozaiamp        180.0     180.0     180.0