Orbit Fit and Astrometric record for 19VE50

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: 19VE50    
# Created Fri Nov  1 01:10:41 2024
# Orbit generated from Bernstein formalism
# Fitting     18 observations of     18
# Arc:  62.06d
# First observation: 2019/10/27
#  Last observation: 2019/12/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000027   0.064383  -0.000016  -0.002656   0.049476   0.000000
# Chi-squared of fit:     6.16 DOF:     30 RMS:  0.10
# Min/Max residuals:    -0.28    0.25
# Exact a, adot, b, bdot, g, gdot:
  2.107086E-05  6.423683E-02 -1.931657E-06 -3.366202E-03  5.017779E-02 -2.281033E-02
# Covariance matrix:
  3.5118E-13  1.9202E-12  5.4328E-14 -2.1049E-12  4.9411E-12  1.0738E-09
  1.9202E-12  1.5564E-10  3.9318E-14  2.2108E-11  7.5569E-11  1.9477E-09
  5.4328E-14  3.9318E-14  1.8653E-13 -2.5199E-12  1.5005E-12  4.8477E-10
 -2.1049E-12  2.2108E-11 -2.5199E-12  8.6227E-11 -6.0459E-11 -2.3556E-08
  4.9411E-12  7.5569E-11  1.5005E-12 -6.0459E-11  1.2939E-10  2.9543E-08
  1.0738E-09  1.9477E-09  4.8477E-10 -2.3556E-08  2.9543E-08  9.3449E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.074788   -7.163009   -0.650971    0.053514   -0.751229  2458783.711641
# Heliocentric elements and errors
Epoch:              2458780.5000  =  2019/10/24
Mean Anomaly:          281.53336 +/-     7.623
Argument of Peri:      241.82315 +/-     3.670
Long of Asc Node:      225.78006 +/-     0.057
Inclination:             5.03277 +/-     0.004
Eccentricity:         0.30382951 +/-    0.0374
Semi-Major Axis:     20.08308014 +/-    0.5761
Time of Perihelion: 2465945.6693 +/-     624.1
Perihelion:          13.98124781 +/-    0.8513
Aphelion:            26.18491247 +/-    1.0622
Period (y)               90.0023 +/-      3.87
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.55534085 +/-    0.0045
Ecliptic Y           -1.93388622 +/-    0.0006
Ecliptic Z            1.41609158 +/-    0.0003
Ecliptic XDOT        -0.00077329 +/-    0.0002
Ecliptic YDOT         0.00363204 +/-    0.0000
Ecliptic ZDOT        -0.00027188 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   20.69461932 +/-    0.0044
Geocenter to KBO     19.92913752 +/-    0.0045
# Hcoef: 11.41

The following table shows the complete astrometric record for 19VE50. 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 (19VE50) followed by the observatory code and reference code for the source of the astrometry.

2019 10  27.21084  23 27 15.22   +00 54 02.7   25.4r 19VE50    T09  C~7ulO      
2019 10  27.23054  23 27 15.12   +00 54 01.6   24.8r 19VE50    T09  C~7ulO      
2019 10  27.24524  23 27 15.03   +00 54 01.1   25.5r 19VE50    T09  C~7ulO      
2019 11  01.21232  23 26 48.18   +00 50 09.8   24.9g 19VE50    T09  C~7ulO      
2019 11  01.29000  23 26 47.77   +00 50 06.6   24.8g 19VE50    T09  C~7ulO      
2019 11  01.37860  23 26 47.31   +00 50 02.6   24.8g 19VE50    T09  C~7ulO      
2019 11  01.45822  23 26 46.90   +00 49 58.9   24.3g 19VE50    T09  C~7ulO      
2019 11  02.20667  23 26 43.23   +00 49 26.3   24.3i 19VE50    T09  C~7ulO      
2019 11  02.22066  23 26 43.14   +00 49 25.6   24.2i 19VE50    T09  C~7ulO      
2019 11  02.23475  23 26 43.07   +00 49 24.8   23.6i 19VE50    T09  C~7ulO      
2019 11  29.20334  23 25 30.17   +00 35 24.2   24.6r 19VE50    T09  C~7ulO      
2019 11  29.21333  23 25 30.16   +00 35 24.1   24.8r 19VE50    T09  C~7ulO      
2019 11  29.22334  23 25 30.16   +00 35 23.9   24.8r 19VE50    T09  C~7ulO      
2019 11  29.24183  23 25 30.15   +00 35 23.7   25.1r 19VE50    T09  C~7ulO      
2019 12  20.264599 23 26 03.96   +00 33 46.7         19VE50    T09  C~81EK      
2019 12  28.208703 23 26 37.62   +00 35 27.5         19VE50    T09  C~81EK      
2019 12  28.243664 23 26 37.79   +00 35 28.0         19VE50    T09  C~81EK      
2019 12  28.270021 23 26 37.92   +00 35 28.5         19VE50    T09  C~81EK      

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    -0.17       0.00     0.18
     2   0.0001     -1.81    -0.01      -0.42    -0.05
     3   0.0001     -3.25     0.03      -0.35     0.16
     4   0.0137   -464.56     0.02     -53.90    -0.28
     5   0.0139   -471.47     0.06     -54.41    -0.01
     6   0.0141   -479.39     0.05     -55.37    -0.07
     7   0.0144   -486.50    -0.01     -56.34    -0.21
     8   0.0164   -549.94     0.25     -64.56     0.13
     9   0.0165   -551.46    -0.05     -64.67     0.16
    10   0.0165   -552.74    -0.11     -64.99    -0.02
    11   0.0903  -1889.25    -0.03    -405.66    -0.07
    12   0.0904  -1889.43    -0.07    -405.69     0.03
    13   0.0904  -1889.51    -0.02    -405.88    -0.03
    14   0.0904  -1889.72     0.02    -406.00     0.08
    15   0.1480  -1462.06     0.10    -695.34    -0.03
    16   0.1697   -958.38    -0.03    -802.03     0.09
    17   0.1698   -955.84    -0.04    -802.58    -0.03
    18   0.1699   -953.85     0.02    -802.89    -0.01

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.

19VE50    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        20.070    20.568    20.044
ecceobj         0.306     0.194     0.337
incobj          5.030     5.040     5.031
qmin           13.880    16.570    13.287
qmax           26.679    24.775    28.896
amean          20.036    20.660    20.944
amin           19.653    20.314    20.044
amax           20.444    20.957    21.858
emean           0.290     0.174     0.311
emin            0.270     0.154     0.271
emax            0.307     0.194     0.338
imean           6.731     6.499     5.631
imin            5.920     5.930     4.639
imax            7.397     7.574     7.007
excite_mean     0.313     0.208     0.327
fracstop        0.002     0.002     0.008
cjmean          3.055     3.080     3.016

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       260.0     242.4     192.7
kozaiamp         16.1      25.5     179.2