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: 09XM26
# Created Sun Dec 22 02:09:07 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 62 observations of 62
# Arc: 10.13y
# First observation: 2009/12/08
# Last observation: 2020/01/24
# Chi-squared of fit: 48.83 DOF: 118 RMS: 0.16
# Min/Max residuals: -0.94 0.39
# Exact a, adot, b, bdot, g, gdot:
2.128430E-05 5.229322E-02 -8.483154E-06 -2.075453E-02 3.940813E-02 9.508213E-03
# Covariance matrix:
1.4415E-13 -4.4687E-14 -1.8112E-14 1.3150E-14 1.9050E-14 -6.9578E-14
-4.4687E-14 2.9813E-14 1.5055E-14 -1.1053E-14 1.8854E-14 5.8364E-14
-1.8112E-14 1.5055E-14 1.0127E-13 -1.9727E-14 8.2703E-15 3.2534E-14
1.3150E-14 -1.1053E-14 -1.9727E-14 7.2055E-15 -6.4555E-15 -2.3861E-14
1.9050E-14 1.8854E-14 8.2703E-15 -6.4555E-15 1.1937E-13 3.3725E-14
-6.9578E-14 5.8364E-14 3.2534E-14 -2.3861E-14 3.3725E-14 1.2602E-13
# lat0 lon0 xBary yBary zBary JD0
1.500764 99.492210 0.381236 0.023860 -0.910253 2455174.130596
# Heliocentric elements and errors
Epoch: 2455174.5000 = 2009/12/09
Mean Anomaly: 11.71877 +/- 0.001
Argument of Peri: 145.45033 +/- 0.002
Long of Asc Node: 282.30942 +/- 0.000
Inclination: 21.63841 +/- 0.000
Eccentricity: 0.41880698 +/- 0.0000
Semi-Major Axis: 43.36443508 +/- 0.0028
Time of Perihelion: 2451779.1974 +/- 0.5
Perihelion: 25.20310680 +/- 0.0021
Aphelion: 61.52576335 +/- 0.0042
Period (y) 285.5675 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -3.95432928 +/- 0.0000
Ecliptic Y 25.97727798 +/- 0.0002
Ecliptic Z 0.66436049 +/- 0.0000
Ecliptic XDOT -0.00369521 +/- 0.0000
Ecliptic YDOT 0.00009483 +/- 0.0000
Ecliptic ZDOT -0.00142418 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 26.28483143 +/- 0.0002
Geocenter to KBO 25.37540016 +/- 0.0002
# Hcoef: 7.86
The following table shows the complete astrometric record for 09XM26. 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 (09XM26) followed by the observatory code and reference code for the source of the astrometry.
2009 12 08.62983 06 41 47.038 +24 35 47.42 21.8G 09XM26 F51 C~344s 2009 12 08.63756 06 41 46.986 +24 35 47.26 21.6G 09XM26 F51 C~344s 2009 12 25.41783 06 39 33.471 +24 34 53.15 21.2G 09XM26 F51 C~344s 2009 12 25.42577 06 39 33.410 +24 34 53.19 20.9G 09XM26 F51 C~344s 2009 12 26.38146 06 39 25.495 +24 34 49.44 22.5G 09XM26 F51 C~344s 2009 12 26.39150 06 39 25.421 +24 34 49.50 22.3G 09XM26 F51 C~344s 2010 01 23.49036 06 35 39.937 +24 32 22.25 21.4G 09XM26 F51 C~344s 2010 12 15.60627 06 53 27.431 +23 10 21.28 21.9G 09XM26 F51 C~344s 2010 12 15.61824 06 53 27.321 +23 10 21.50 21.9G 09XM26 F51 C~344s 2011 01 05.51489 06 50 39.949 +23 09 49.07 21.5G 09XM26 F51 C~344s 2011 01 05.52685 06 50 39.832 +23 09 48.98 21.6G 09XM26 F51 C~344s 2012 01 11.50759 07 02 01.338 +21 43 33.91 21.7G 09XM26 F51 C~344s 2012 01 25.29410 07 00 15.001 +21 43 41.26 21.8G 09XM26 F51 C~344s 2012 01 25.30737 07 00 14.893 +21 43 41.54 22.1G 09XM26 F51 C~344s 2012 02 10.25517 06 58 27.751 +21 43 32.17 21.9G 09XM26 F51 C~344s 2012 02 10.26838 06 58 27.658 +21 43 31.51 21.5G 09XM26 F51 C~344s 2012 11 15.64706 07 19 47.224 +20 16 54.47 21.4G 09XM26 F51 C~344s 2013 10 21.59431 07 31 19.868 +18 54 09.16 22.5G 09XM26 F51 C~344s 2013 12 11.56293 07 28 34.996 +18 46 18.40 22.2G 09XM26 F51 C~344s 2013 12 11.57805 07 28 34.888 +18 46 18.29 22.2G 09XM26 F51 C~344s 2013 12 11.59318 07 28 34.801 +18 46 18.22 22.9G 09XM26 F51 C~344s 2013 12 11.60831 07 28 34.699 +18 46 18.25 22.0G 09XM26 F51 C~344s 2013 12 12.61836 07 28 28.230 +18 46 17.47 22.0G 09XM26 F51 C~344s 2013 12 12.62988 07 28 28.155 +18 46 17.92 21.7G 09XM26 F51 C~344s 2014 01 10.32515 07 24 58.664 +18 47 33.60 21.4G 09XM26 F51 C~344s 2014 01 10.33891 07 24 58.580 +18 47 33.68 22.4G 09XM26 F51 C~344s 2014 01 26.29239 07 22 57.591 +18 49 05.46 22.2G 09XM26 F51 C~344s 2014 01 26.30442 07 22 57.512 +18 49 05.48 22.4G 09XM26 F51 C~344s 2014 01 26.33375 07 22 57.294 +18 49 05.67 22.1G 09XM26 F51 C~344s 2014 01 26.34565 07 22 57.203 +18 49 05.71 22.2G 09XM26 F51 C~344s 2014 11 18.48000 07 41 04.073 +17 19 19.73 22.6G 09XM26 F51 C~344s 2014 11 18.49324 07 41 04.056 +17 19 19.77 22.3G 09XM26 F51 C~344s 2016 01 31.32156 07 43 34.209 +15 53 10.29 21.8G 09XM26 F51 C~344s 2016 01 31.33353 07 43 34.114 +15 53 10.44 21.1G 09XM26 F51 C~344s 2016 04 02.27017 07 39 21.359 +16 02 07.33 22.5G 09XM26 F51 C~344s 2016 04 02.28279 07 39 21.349 +16 02 07.36 22.7G 09XM26 F51 C~344s 2016 04 02.29544 07 39 21.368 +16 02 07.33 22.8G 09XM26 F51 C~344s 2016 04 02.30811 07 39 21.371 +16 02 07.32 22.2G 09XM26 F51 C~344s 2017 01 05.36179 07 56 34.351 +14 20 45.07 22.4G 09XM26 F51 C~344s 2017 01 26.44933 07 54 01.518 +14 24 19.62 22.1G 09XM26 F51 C~344s 2017 01 26.45994 07 54 01.439 +14 24 19.80 21.9G 09XM26 F51 C~344s 2017 01 26.47058 07 54 01.371 +14 24 19.84 22.3G 09XM26 F51 C~344s 2017 01 26.48119 07 54 01.285 +14 24 19.93 22.7G 09XM26 F51 C~344s 2017 11 22.54349 08 09 55.640 +12 55 05.39 22.5G 09XM26 F51 C~344s 2017 11 22.55428 08 09 55.628 +12 55 04.93 22.4G 09XM26 F51 C~344s 2017 11 22.56509 08 09 55.572 +12 55 05.06 22.5G 09XM26 F51 C~344s 2017 11 22.57597 08 09 55.551 +12 55 04.75 22.7G 09XM26 F51 C~344s 2017 12 24.44713 08 07 26.383 +12 52 00.03 22.2G 09XM26 F51 C~344s 2017 12 24.45869 08 07 26.312 +12 52 00.14 22.1G 09XM26 F51 C~344s 2017 12 24.47033 08 07 26.239 +12 52 00.31 22.2G 09XM26 F51 C~344s 2017 12 24.48191 08 07 26.159 +12 52 00.22 22.3G 09XM26 F51 C~344s 2018 01 12.54344 08 05 17.689 +12 54 01.11 22.4G 09XM26 F51 C~344s 2018 01 12.55683 08 05 17.591 +12 54 01.24 22.3G 09XM26 F51 C~344s 2018 01 12.57028 08 05 17.498 +12 54 01.30 22.3G 09XM26 F51 C~344s 2018 01 12.58373 08 05 17.407 +12 54 01.04 22.0G 09XM26 F51 C~344s 2018 01 20.49636 08 04 20.799 +12 55 30.73 22.1G 09XM26 F51 C~344s 2018 01 20.50870 08 04 20.706 +12 55 30.99 22.0G 09XM26 F51 C~344s 2018 01 20.52092 08 04 20.614 +12 55 31.05 22.1G 09XM26 F51 C~344s 2018 01 20.53316 08 04 20.531 +12 55 31.25 22.1G 09XM26 F51 C~344s 2020 01 24.33240 08 22 03.036 +10 04 20.56 22.1w 09XM26 F51 C~3cej 2020 01 24.34243 08 22 02.961 +10 04 20.78 22.1w 09XM26 F51 C~3cej 2020 01 24.35246 08 22 02.874 +10 04 20.75 22.3w 09XM26 F51 C~3cej
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 0.04
2 0.0000 0.00 0.03 0.00 -0.10
3 0.0460 0.00 -0.05 0.00 0.05
4 0.0460 0.00 0.04 0.00 0.12
5 0.0486 0.00 -0.14 0.00 -0.04
6 0.0486 0.00 0.02 0.00 0.06
7 0.1256 0.00 0.19 0.00 -0.31
8 1.0184 0.00 0.15 0.00 -0.07
9 1.0184 0.00 -0.11 0.00 0.18
10 1.0757 0.00 0.04 0.00 0.22
11 1.0757 0.00 -0.23 0.00 0.16
12 2.0914 0.00 -0.04 0.00 -0.05
13 2.1291 0.00 0.06 0.00 0.03
14 2.1292 0.00 -0.07 0.00 0.31
15 2.1728 0.00 0.08 0.00 -0.30
16 2.1729 0.00 -0.11 0.00 -0.94
17 2.9378 0.00 -0.23 0.00 0.16
18 3.8685 0.00 -0.06 0.00 0.02
19 4.0080 0.00 0.07 0.00 0.07
20 4.0081 0.00 -0.08 0.00 -0.02
21 4.0081 0.00 0.09 0.00 -0.08
22 4.0082 0.00 0.03 0.00 -0.03
23 4.0109 0.00 0.18 0.00 -0.08
24 4.0110 0.00 0.18 0.00 0.39
25 4.0895 0.00 0.01 0.00 -0.13
26 4.0896 0.00 0.36 0.00 -0.13
27 4.1332 0.00 -0.10 0.00 0.16
28 4.1333 0.00 0.06 0.00 0.10
29 4.1333 0.00 0.05 0.00 0.11
30 4.1334 0.00 0.02 0.00 0.07
31 4.9441 0.00 -0.30 0.00 -0.12
32 4.9442 0.00 0.11 0.00 0.05
33 6.1456 0.00 -0.15 0.00 0.11
34 6.1457 0.00 -0.29 0.00 0.12
35 6.3152 0.00 -0.12 0.00 0.02
36 6.3153 0.00 -0.24 0.00 0.03
37 6.3153 0.00 0.08 0.00 -0.02
38 6.3153 0.00 0.16 0.00 -0.06
39 7.0766 0.00 0.05 0.00 0.18
40 7.1343 0.00 0.04 0.00 0.13
41 7.1344 0.00 0.01 0.00 0.18
42 7.1344 0.00 0.16 0.00 0.09
43 7.1344 0.00 0.03 0.00 0.05
44 7.9560 0.00 -0.05 0.00 0.12
45 7.9560 0.00 0.25 0.00 -0.19
46 7.9560 0.00 -0.11 0.00 0.09
47 7.9560 0.00 0.06 0.00 -0.06
48 8.0433 0.00 -0.02 0.00 -0.17
49 8.0433 0.00 0.01 0.00 -0.09
50 8.0434 0.00 0.02 0.00 0.05
51 8.0434 0.00 -0.08 0.00 -0.06
52 8.0956 0.00 -0.06 0.00 0.06
53 8.0956 0.00 -0.09 0.00 0.06
54 8.0957 0.00 -0.03 0.00 -0.01
55 8.0957 0.00 0.06 0.00 -0.40
56 8.1174 0.00 0.08 0.00 -0.06
57 8.1174 0.00 0.04 0.00 0.05
58 8.1174 0.00 -0.01 0.00 -0.04
59 8.1175 0.00 0.09 0.00 0.01
60 10.1265 0.00 0.08 0.00 -0.01
61 10.1265 0.00 0.01 0.00 0.05
62 10.1266 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.
09XM26 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 43.962 43.962 43.962 ecceobj 0.426 0.426 0.426 incobj 21.595 21.595 21.595 qmin 23.557 24.145 23.288 qmax 64.117 64.467 66.429 amean 43.479 43.751 44.135 amin 42.297 43.008 42.993 amax 44.652 44.736 47.326 emean 0.430 0.423 0.432 emin 0.350 0.369 0.381 emax 0.457 0.449 0.470 imean 22.560 23.176 22.681 imin 20.785 21.764 20.427 imax 26.755 26.471 26.031 excite_mean 0.577 0.579 0.580 fracstop 0.156 0.126 0.344 cjmean 2.689 2.689 2.694 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 191.8 193.6 174.0 kozaiamp 38.4 39.2 180.0