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: 19AM122
# Created Fri Aug 15 01:11:39 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 19 observations of 19
# Arc: 13.83y
# First observation: 2011/03/04
# Last observation: 2024/12/31
# Chi-squared of fit: 6.93 DOF: 32 RMS: 0.11
# Min/Max residuals: -0.23 0.24
# Exact a, adot, b, bdot, g, gdot:
1.796119E-05 5.123096E-02 -9.235443E-06 -2.571105E-02 4.429689E-02 1.411785E-02
# Covariance matrix:
4.6969E-13 -7.6178E-14 -4.7337E-14 2.0570E-14 -4.7519E-14 -5.9387E-14
-7.6178E-14 3.4745E-14 3.0304E-14 -1.3252E-14 -4.7120E-14 3.4823E-14
-4.7337E-14 3.0304E-14 3.9302E-13 -5.0056E-14 -3.2920E-14 3.6758E-14
2.0570E-14 -1.3252E-14 -5.0056E-14 1.0586E-14 1.4651E-14 -1.6042E-14
-4.7519E-14 -4.7120E-14 -3.2920E-14 1.4651E-14 2.9103E-13 -2.7944E-14
-5.9387E-14 3.4823E-14 3.6758E-14 -1.6042E-14 -2.7944E-14 4.3443E-14
# lat0 lon0 xBary yBary zBary JD0
1.907236 90.833341 -0.948871 0.010021 -0.301084 2455624.769199
# Heliocentric elements and errors
Epoch: 2455624.5000 = 2011/03/04
Mean Anomaly: 67.65631 +/- 0.006
Argument of Peri: 76.07305 +/- 0.008
Long of Asc Node: 276.88436 +/- 0.000
Inclination: 27.06189 +/- 0.000
Eccentricity: 0.27809273 +/- 0.0000
Semi-Major Axis: 23.64060189 +/- 0.0013
Time of Perihelion: 2447734.2270 +/- 1.0
Perihelion: 17.06632234 +/- 0.0009
Aphelion: 30.21488144 +/- 0.0017
Period (y) 114.9466 +/- 0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -1.27759998 +/- 0.0000
Ecliptic Y 22.84714670 +/- 0.0003
Ecliptic Z 0.75110738 +/- 0.0000
Ecliptic XDOT -0.00318091 +/- 0.0000
Ecliptic YDOT 0.00088487 +/- 0.0000
Ecliptic ZDOT -0.00155918 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 22.89503321 +/- 0.0003
Geocenter to KBO 22.57489038 +/- 0.0003
# Hcoef: 8.79
The following table shows the complete astrometric record for 19AM122. 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 (19AM122) followed by the observatory code and reference code for the source of the astrometry.
2011 03 04.268433 06 03 41.18 +25 20 37.9 22.2r 19AM122 T14 C~6VJl 2011 03 09.282596 06 03 35.71 +25 19 00.5 22.1r 19AM122 T14 C~6VJl 2011 03 10.224271 06 03 35.25 +25 18 42.1 21.9r 19AM122 T14 C~6VJl 2018 10 07.358918 07 41 45.34 +13 22 45.7 22.6r 19AM122 W84 C~6VJl 2018 10 07.361321 07 41 45.35 +13 22 45.6 23.4g 19AM122 W84 C~6VJl 2018 11 03.265273 07 42 03.48 +13 08 11.9 23.0g 19AM122 W84 C~6VJl 2018 11 03.267225 07 42 03.47 +13 08 11.8 22.5r 19AM122 W84 C~6VJl 2018 12 15.209222 07 38 52.89 +12 56 54.0 22.8r 19AM122 W84 C~6VJl 2018 12 15.210270 07 38 52.88 +12 56 54.1 23.2g 19AM122 W84 C~6VJl 2019 01 11.182273 07 35 18.37 +12 57 35.6 23.3V 19AM122 W84 C~6VJl 2019 01 13.16852 07 35 01.621 +12 57 51.21 24.0R 19AM122 807 C~6VJl 2019 01 14.19909 07 34 52.939 +12 58 00.08 23.9R 19AM122 807 C~6VJl 2019 02 28.103597 07 29 27.69 +13 08 15.1 19AM122 W84 C~6VJl 2019 12 31.274414 07 45 34.26 +11 25 09.4 22.8V 19AM122 W84 C~6VJl 2019 12 31.276488 07 45 34.24 +11 25 09.4 22.7V 19AM122 W84 C~6VJl 2020 02 04.128530 07 40 51.91 +11 31 13.8 22.4i 19AM122 W84 C~6VJl 2024 12 31.385350 08 25 07.359 +04 08 39.03 23.1G 19AM122 G37 C~8cS6 2024 12 31.438520 08 25 06.986 +04 08 38.83 19AM122 G37 C~8cS6 2024 12 31.490950 08 25 06.600 +04 08 38.77 19AM122 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 0.07 0.00 0.01
2 0.0137 0.00 -0.05 0.00 0.02
3 0.0163 0.00 -0.05 0.00 -0.07
4 7.5950 0.00 -0.04 0.00 -0.20
5 7.5951 0.00 0.01 0.00 -0.21
6 7.6687 0.00 0.19 0.00 0.14
7 7.6687 0.00 0.08 0.00 0.09
8 7.7835 0.00 -0.04 0.00 -0.05
9 7.7836 0.00 -0.08 0.00 0.05
10 7.8574 0.00 -0.00 0.00 -0.02
11 7.8628 0.00 -0.10 0.00 0.02
12 7.8657 0.00 0.02 0.00 0.24
13 7.9886 0.00 0.05 0.00 0.06
14 8.8268 0.00 -0.03 0.00 0.01
15 8.8269 0.00 -0.08 0.00 0.01
16 8.9223 0.00 0.21 0.00 -0.05
17 13.8292 0.00 0.09 0.00 0.13
18 13.8294 0.00 0.07 0.00 -0.07
19 13.8295 0.00 -0.23 0.00 -0.13
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.
19AM122 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 23.778 23.778 23.778 ecceobj 0.281 0.281 0.281 incobj 27.039 27.039 27.039 qmin 16.697 16.705 16.658 qmax 30.822 30.467 30.706 amean 23.595 23.428 23.537 amin 23.349 22.756 23.373 amax 24.000 23.778 23.791 emean 0.280 0.277 0.282 emin 0.273 0.259 0.274 emax 0.288 0.287 0.291 imean 28.541 28.621 28.454 imin 28.322 28.306 28.302 imax 28.805 29.188 28.777 excite_mean 0.554 0.553 0.554 fracstop 0.009 0.009 0.008 cjmean 2.772 2.776 2.773 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 95.3 94.5 90.6 kozaiamp 19.4 16.8 15.3