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: 22HK5
# Created Mon Jun 30 01:11:28 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 35 observations of 35
# Arc: 6.10y
# First observation: 2016/04/02
# Last observation: 2022/05/10
# Chi-squared of fit: 33.39 DOF: 64 RMS: 0.17
# Min/Max residuals: -0.38 0.46
# Exact a, adot, b, bdot, g, gdot:
2.404694E-05 5.569022E-02 -1.320370E-06 -1.227519E-03 3.605918E-02 -1.425411E-03
# Covariance matrix:
1.1789E-13 1.5587E-12 4.8742E-15 -3.6415E-14 5.2449E-13 4.6349E-12
1.5587E-12 2.0747E-10 5.3101E-13 -4.8144E-12 4.9456E-11 6.1392E-10
4.8742E-15 5.3101E-13 6.4615E-14 -2.2972E-14 1.2960E-13 1.5712E-12
-3.6415E-14 -4.8144E-12 -2.2972E-14 1.1723E-13 -1.1477E-12 -1.4247E-11
5.2449E-13 4.9456E-11 1.2960E-13 -1.1477E-12 1.2318E-11 1.4632E-10
4.6349E-12 6.1392E-10 1.5712E-12 -1.4247E-11 1.4632E-10 1.8167E-09
# lat0 lon0 xBary yBary zBary JD0
1.836198 -173.865842 -0.115240 0.031827 -0.988411 2457480.894209
# Heliocentric elements and errors
Epoch: 2457480.5000 = 2016/04/02
Mean Anomaly: 359.71809 +/- 0.010
Argument of Peri: 128.45721 +/- 0.105
Long of Asc Node: 60.75076 +/- 0.002
Inclination: 2.18030 +/- 0.000
Eccentricity: 0.74337799 +/- 0.0003
Semi-Major Axis: 111.87499404 +/- 0.1464
Time of Perihelion: 2457818.9534 +/- 847.6
Perihelion: 28.70958588 +/- 0.0540
Aphelion: 195.04040220 +/- 0.2581
Period (y) 1183.3351 +/- 2.32
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -28.53389619 +/- 0.0027
Ecliptic Y -3.18481546 +/- 0.0003
Ecliptic Z 0.88858731 +/- 0.0001
Ecliptic XDOT 0.00055652 +/- 0.0000
Ecliptic YDOT -0.00419990 +/- 0.0000
Ecliptic ZDOT -0.00009661 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 28.72484455 +/- 0.0027
Geocenter to KBO 27.73224824 +/- 0.0027
# Hcoef: 8.76
The following table shows the complete astrometric record for 22HK5. 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 (22HK5) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.39342 12 25 25.97 -00 44 59.1 22.9i 22HK5 T09 C~89Td 2016 04 02.41191 12 25 25.85 -00 44 58.6 22.9i 22HK5 T09 C~89Td 2016 04 02.43645 12 25 25.70 -00 44 57.6 23.1i 22HK5 T09 C~89Td 2016 04 02.49363 12 25 25.35 -00 44 55.6 23.0i 22HK5 T09 C~89Td 2016 04 04.34027 12 25 14.51 -00 43 47.5 24.0g 22HK5 T09 C~89Td 2016 04 04.34883 12 25 14.45 -00 43 47.5 23.9g 22HK5 T09 C~89Td 2016 04 04.36377 12 25 14.38 -00 43 46.8 24.3g 22HK5 T09 C~89Td 2016 04 04.38940 12 25 14.22 -00 43 45.8 24.0g 22HK5 T09 C~89Td 2016 04 04.41735 12 25 14.04 -00 43 44.8 23.8g 22HK5 T09 C~89Td 2016 04 04.50037 12 25 13.57 -00 43 42.0 24.5g 22HK5 T09 C~89Td 2016 04 07.297355 12 24 57.240 -00 41 59.93 23.0g 22HK5 W84 C~8Hdl 2016 04 08.170019 12 24 52.195 -00 41 29.26 23.2r 22HK5 W84 C~8Hdl 2016 04 10.161789 12 24 40.752 -00 40 18.59 23.3g 22HK5 W84 C~8Hdl 2016 04 15.26874 12 24 12.09 -00 37 23.7 22.8y 22HK5 T09 C~89Td 2016 04 15.34877 12 24 11.64 -00 37 21.0 22.9y 22HK5 T09 C~89Td 2016 04 15.37114 12 24 11.51 -00 37 20.4 23.3y 22HK5 T09 C~89Td 2016 04 15.41900 12 24 11.23 -00 37 18.9 22.8y 22HK5 T09 C~89Td 2016 06 04.26765 12 21 13.45 -00 21 09.0 23.4z 22HK5 T09 C~89Td 2016 06 04.27307 12 21 13.42 -00 21 08.8 23.4z 22HK5 T09 C~89Td 2016 06 04.32166 12 21 13.38 -00 21 08.6 23.4z 22HK5 T09 C~89Td 2016 06 05.31150 12 21 12.44 -00 21 07.1 23.4r 22HK5 T09 C~89Td 2016 06 05.32218 12 21 12.43 -00 21 07.3 23.5r 22HK5 T09 C~89Td 2016 06 05.32639 12 21 12.44 -00 21 07.3 23.7r 22HK5 T09 C~89Td 2016 06 05.35188 12 21 12.42 -00 21 07.1 23.5r 22HK5 T09 C~89Td 2022 04 22.06638 13 33 16.11 -08 19 00.2 23.1R 22HK5 W93 C~5bqy 2022 04 22.08778 13 33 15.97 -08 18 59.6 22.7R 22HK5 W93 C~5bqy 2022 04 22.10890 13 33 15.86 -08 18 58.9 22.9R 22HK5 W93 C~5bqy 2022 04 22.13017 13 33 15.71 -08 18 58.0 23.2R 22HK5 W93 C~5bqy 2022 04 22.14969 13 33 15.56 -08 18 57.8 22.8R 22HK5 W93 C~5bqy 2022 04 24.06779 13 33 04.22 -08 17 54.0 23.0R 22HK5 W93 C~5bqy 2022 04 24.08911 13 33 04.10 -08 17 53.1 22.8R 22HK5 W93 C~5bqy 2022 04 24.13133 13 33 03.86 -08 17 51.8 22.6R 22HK5 W93 C~5bqy 2022 04 26.08035 13 32 52.38 -08 16 47.6 22HK5 W93 C~5bqy 2022 04 26.12736 13 32 52.09 -08 16 46.5 23.2R 22HK5 W93 C~5bqy 2022 05 10.164378 13 31 33.58 -08 09 35.0 22.4i 22HK5 W84 C~89XP
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 0.13 0.00 0.12
2 0.0001 0.00 0.01 0.00 -0.06
3 0.0001 0.00 -0.03 0.00 0.03
4 0.0003 0.00 -0.12 0.00 -0.08
5 0.0053 0.00 -0.01 0.00 0.22
6 0.0054 0.00 -0.14 0.00 -0.09
7 0.0054 0.00 0.15 0.00 0.06
8 0.0055 0.00 0.05 0.00 0.12
9 0.0055 0.00 -0.13 0.00 0.10
10 0.0058 0.00 0.27 0.00 -0.13
11 0.0134 0.00 0.13 0.00 0.40
12 0.0158 0.00 0.02 0.00 -0.15
13 0.0213 0.00 0.01 0.00 0.03
14 0.0353 0.00 -0.03 0.00 0.04
15 0.0355 0.00 -0.04 0.00 0.07
16 0.0355 0.00 -0.10 0.00 -0.08
17 0.0357 0.00 -0.26 0.00 -0.17
18 0.1721 0.00 0.08 0.00 -0.23
19 0.1722 0.00 -0.27 0.00 -0.04
20 0.1723 0.00 -0.05 0.00 0.07
21 0.1750 0.00 -0.10 0.00 0.07
22 0.1750 0.00 -0.09 0.00 -0.14
23 0.1750 0.00 0.12 0.00 -0.14
24 0.1751 0.00 0.20 0.00 0.03
25 6.0525 0.00 0.36 0.00 0.03
26 6.0526 0.00 0.20 0.00 -0.07
27 6.0526 0.00 0.46 0.00 -0.07
28 6.0527 0.00 0.14 0.00 0.12
29 6.0527 0.00 -0.34 0.00 -0.33
30 6.0580 0.00 -0.19 0.00 -0.03
31 6.0580 0.00 -0.07 0.00 0.17
32 6.0581 0.00 0.13 0.00 0.08
33 6.0635 0.00 -0.23 0.00 0.39
34 6.0636 0.00 -0.38 0.00 -0.03
35 6.1020 0.00 0.02 0.00 -0.28
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.
22HK5 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 107.448 107.446 107.450 ecceobj 0.733 0.733 0.733 incobj 2.181 2.181 2.181 qmin 28.006 28.104 28.272 qmax 201.762 191.352 189.607 amean 110.113 106.565 107.917 amin 107.158 102.669 107.139 amax 115.185 109.886 109.192 emean 0.739 0.730 0.733 emin 0.728 0.717 0.728 emax 0.752 0.743 0.737 imean 1.580 1.753 1.596 imin 1.364 1.574 1.575 imax 1.697 1.946 1.614 excite_mean 0.739 0.731 0.733 fracstop 0.005 0.007 0.001 cjmean 2.850 2.850 2.853 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 133.4 135.2 128.7 kozaiamp 5.1 6.9 0.6