Orbit Fit and Astrometric record for 19AR143

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: 19AR143   
# Created Tue Apr  1 01:11:10 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     39 observations of     39
# Arc:  10.00y
# First observation: 2014/12/30
#  Last observation: 2024/12/31
# Chi-squared of fit:    12.63 DOF:     72 RMS:  0.10
# Min/Max residuals:    -0.28    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.566006E-05  2.645565E-02  8.203199E-06  1.373264E-02  2.632491E-02  5.835180E-04
# Covariance matrix:
  1.0545E-13 -2.7698E-14  7.0132E-15 -7.7175E-15  9.5965E-14 -6.1274E-14
 -2.7698E-14  2.4062E-14 -7.3492E-15  1.0105E-14 -8.3799E-15  8.4685E-14
  7.0132E-15 -7.3492E-15  6.4286E-14 -1.4158E-14  4.7535E-15 -3.1518E-14
 -7.7175E-15  1.0105E-14 -1.4158E-14  9.7317E-15 -5.8216E-16  4.4248E-14
  9.5965E-14 -8.3799E-15  4.7535E-15 -5.8216E-16  2.7740E-13  5.6354E-15
 -6.1274E-14  8.4685E-14 -3.1518E-14  4.4248E-14  5.6354E-15  3.7242E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -14.691767  137.988658    0.628827   -0.191139   -0.729776  2457021.837105
# Heliocentric elements and errors
Epoch:              2457022.5000  =  2014/12/31
Mean Anomaly:            1.12791 +/-     0.003
Argument of Peri:      328.60652 +/-     0.006
Long of Asc Node:      162.93180 +/-     0.000
Inclination:            30.45624 +/-     0.000
Eccentricity:         0.26293085 +/-    0.0001
Semi-Major Axis:     52.53213110 +/-    0.0066
Time of Perihelion: 2456586.7799 +/-       1.2
Perihelion:          38.71981323 +/-    0.0063
Aphelion:            66.34444896 +/-    0.0093
Period (y)              380.7551 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.44481122 +/-    0.0005
Ecliptic Y           25.56508987 +/-    0.0005
Ecliptic Z           -9.63393773 +/-    0.0002
Ecliptic XDOT        -0.00215822 +/-    0.0000
Ecliptic YDOT        -0.00176787 +/-    0.0000
Ecliptic ZDOT         0.00136624 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.72471894 +/-    0.0005
Geocenter to KBO     37.98684708 +/-    0.0008
# Hcoef:  7.23

The following table shows the complete astrometric record for 19AR143. 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 (19AR143) followed by the observatory code and reference code for the source of the astrometry.

2014 12  30.336327 09 03 52.10   +01 25 21.7   23.2r 19AR143   W84  C~89Vd      
2015 01  16.37961  09 02 38.53   +01 29 40.1   22.8z 19AR143   T09  C~8eYm      
2015 01  16.48492  09 02 38.03   +01 29 42.3   22.8z 19AR143   T09  C~8eYm      
2015 01  16.49591  09 02 37.97   +01 29 42.5   22.6z 19AR143   T09  C~8eYm      
2015 01  16.50946  09 02 37.90   +01 29 42.8   22.7z 19AR143   T09  C~8eYm      
2015 01  16.52039  09 02 37.86   +01 29 43.1   22.6z 19AR143   T09  C~8eYm      
2015 01  16.52316  09 02 37.85   +01 29 43.1   22.6z 19AR143   T09  C~8eYm      
2015 01  21.44802  09 02 14.34   +01 31 30.0   23.1i 19AR143   T09  C~8eYm      
2015 01  21.47600  09 02 14.19   +01 31 30.5   22.8i 19AR143   T09  C~8eYm      
2015 01  21.49246  09 02 14.12   +01 31 30.8   22.8i 19AR143   T09  C~8eYm      
2015 01  21.51438  09 02 14.00   +01 31 31.3   22.8i 19AR143   T09  C~8eYm      
2015 01  27.31320  09 01 45.60   +01 33 53.7   23.0y 19AR143   T09  C~8eYm      
2015 01  27.34202  09 01 45.45   +01 33 54.4   22.9y 19AR143   T09  C~8eYm      
2015 01  27.38828  09 01 45.23   +01 33 55.7   23.0y 19AR143   T09  C~8eYm      
2015 01  27.40562  09 01 45.14   +01 33 56.1   23.0y 19AR143   T09  C~8eYm      
2015 01  27.45558  09 01 44.89   +01 33 57.4   23.0y 19AR143   T09  C~8eYm      
2015 01  27.52154  09 01 44.56   +01 33 59.1   23.1y 19AR143   T09  C~8eYm      
2015 01  27.53517  09 01 44.48   +01 33 59.6   22.7y 19AR143   T09  C~8eYm      
2015 03  18.367624 08 58 03.14   +02 02 31.9         19AR143   T09  C~89Vd      
2015 11  08.627105 09 11 55.83   +01 48 09.0         19AR143   T09  C~89Vd      
2015 11  08.644172 09 11 55.85   +01 48 08.6         19AR143   T09  C~89Vd      
2016 03  07.410658 09 05 24.88   +02 14 13.2         19AR143   T09  C~89Vd      
2018 02  05.241642 09 21 18.42   +02 32 24.2   22.5z 19AR143   W84  C~89Vd      
2018 11  15.55104  09 31 47.16   +02 38 20.8   22.7z 19AR143   T09  C~89Vd      
2018 11  15.58818  09 31 47.19   +02 38 20.1   23.0z 19AR143   T09  C~89Vd      
2018 11  15.61442  09 31 47.21   +02 38 19.9   22.8z 19AR143   T09  C~89Vd      
2019 01  06.45393  09 30 18.64   +02 38 21.7   24.2g 19AR143   T09  C~89Vd      
2019 01  06.47073  09 30 18.58   +02 38 21.9   24.1g 19AR143   T09  C~89Vd      
2019 01  06.56149  09 30 18.21   +02 38 23.6   23.7g 19AR143   T09  C~89Vd      
2019 01  06.58489  09 30 18.12   +02 38 23.9   23.2g 19AR143   T09  C~89Vd      
2019 01  06.59550  09 30 18.09   +02 38 23.7   23.3g 19AR143   T09  C~89Vd      
2019 01  06.61492  09 30 18.01   +02 38 24.4   23.7g 19AR143   T09  C~89Vd      
2019 01  06.61703  09 30 17.99   +02 38 24.2   23.9g 19AR143   T09  C~89Vd      
2019 01  08.505185 09 30 10.63   +02 38 55.1         19AR143   T09  C~89Vd      
2019 03  08.291798 09 25 38.22   +03 08 04.9         19AR143   T09  C~89Vd      
2019 03  08.334003 09 25 38.04   +03 08 06.5         19AR143   T09  C~89Vd      
2024 12  31.419550 10 10 27.759  +04 18 36.89  23.1G 19AR143   G37  C~8cS6      
2024 12  31.471850 10 10 27.605  +04 18 37.70        19AR143   G37  C~8cS6      
2024 12  31.524310 10 10 27.468  +04 18 38.97        19AR143   G37  C~8cS6      

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    -0.01
     2   0.0467      0.00    -0.01       0.00    -0.06
     3   0.0470      0.00     0.04       0.00     0.00
     4   0.0470      0.00    -0.07       0.00    -0.02
     5   0.0470      0.00    -0.15       0.00     0.01
     6   0.0470      0.00     0.04       0.00     0.08
     7   0.0471      0.00     0.09       0.00     0.03
     8   0.0605      0.00     0.08       0.00     0.20
     9   0.0606      0.00    -0.10       0.00     0.06
    10   0.0607      0.00     0.07       0.00    -0.02
    11   0.0607      0.00    -0.11       0.00    -0.02
    12   0.0766      0.00    -0.06       0.00    -0.04
    13   0.0767      0.00    -0.15       0.00    -0.09
    14   0.0768      0.00     0.04       0.00     0.00
    15   0.0768      0.00    -0.00       0.00    -0.05
    16   0.0770      0.00     0.02       0.00    -0.05
    17   0.0772      0.00     0.06       0.00    -0.07
    18   0.0772      0.00    -0.11       0.00     0.07
    19   0.2136      0.00     0.00       0.00     0.04
    20   0.8577      0.00     0.04       0.00    -0.01
    21   0.8578      0.00     0.11       0.00    -0.07
    22   1.1857      0.00     0.05       0.00     0.05
    23   3.1017      0.00     0.06       0.00    -0.28
    24   3.8774      0.00    -0.04       0.00     0.13
    25   3.8775      0.00     0.03       0.00    -0.02
    26   3.8776      0.00     0.06       0.00     0.17
    27   4.0195      0.00    -0.02       0.00     0.00
    28   4.0195      0.00     0.07       0.00    -0.06
    29   4.0198      0.00    -0.12       0.00     0.21
    30   4.0198      0.00    -0.09       0.00     0.14
    31   4.0199      0.00     0.09       0.00    -0.22
    32   4.0199      0.00     0.03       0.00     0.17
    33   4.0199      0.00    -0.14       0.00    -0.06
    34   4.0251      0.00     0.01       0.00     0.04
    35   4.1861      0.00     0.00       0.00    -0.07
    36   4.1862      0.00     0.02       0.00    -0.05
    37  10.0043      0.00     0.10       0.00    -0.21
    38  10.0045      0.00    -0.08       0.00    -0.17
    39  10.0046      0.00     0.00       0.00     0.33

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.

19AR143    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        52.329    52.329    52.329
ecceobj         0.259     0.259     0.259
incobj         30.534    30.534    30.534
qmin           37.576    37.597    37.601
qmax           67.295    67.301    67.333
amean          52.134    52.134    52.135
amin           51.639    51.643    51.635
amax           52.723    52.717    52.735
emean           0.260     0.260     0.260
emin            0.243     0.243     0.243
emax            0.277     0.277     0.277
imean          29.586    29.586    29.586
imin           29.218    29.218    29.208
imax           30.033    30.033    30.038
excite_mean     0.558     0.558     0.558
fracstop        1.000     1.000     1.000
cjmean          2.788     2.788     2.788

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       158.7     158.8     158.8
kozaiamp        180.0     180.0     180.0