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: 24RU155
# Created Sun Oct 19 01:12:32 2025
# Orbit generated from Bernstein formalism
# Fitting 23 observations of 27
# Arc: 0.97y
# First observation: 2024/09/09
# Last observation: 2025/08/29
Preliminary a, adot, b, bdot, g, gdot:
-0.001213 0.387266 -0.000240 0.034517 0.147149 0.000000
# Chi-squared of fit: 15.27 DOF: 40 RMS: 0.14
# Min/Max residuals: -0.27 0.35
# Exact a, adot, b, bdot, g, gdot:
3.759119E-05 3.372463E-01 2.858831E-06 3.014367E-02 1.423323E-01 -9.727609E-02
# Covariance matrix:
3.5928E-13 6.6341E-12 -3.8539E-14 6.5167E-13 2.1981E-12 1.8314E-11
6.6341E-12 2.2288E-10 -1.2623E-12 2.1158E-11 6.6330E-11 5.9830E-10
-3.8539E-14 -1.2623E-12 9.5171E-14 -2.3863E-13 -3.7712E-13 -3.3969E-12
6.5167E-13 2.1158E-11 -2.3863E-13 2.5438E-12 6.3370E-12 5.6952E-11
2.1981E-12 6.6330E-11 -3.7712E-13 6.3370E-12 2.0296E-11 1.7888E-10
1.8314E-11 5.9830E-10 -3.3969E-12 5.6952E-11 1.7888E-10 1.6102E-09
# lat0 lon0 xBary yBary zBary JD0
5.249945 10.986214 0.414511 0.083239 -0.908293 2460562.915141
# Heliocentric elements and errors
Epoch: 2460560.5000 = 2024/09/07
Mean Anomaly: 324.83426 +/- 0.008
Argument of Peri: 116.17634 +/- 0.008
Long of Asc Node: 326.70311 +/- 0.001
Inclination: 7.00491 +/- 0.000
Eccentricity: 0.39593010 +/- 0.0001
Semi-Major Axis: 10.41893552 +/- 0.0015
Time of Perihelion: 2461760.4158 +/- 0.0
Perihelion: 6.29376536 +/- 0.0017
Aphelion: 14.54410567 +/- 0.0026
Period (y) 33.6313 +/- 0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 7.84895255 +/- 0.0002
Ecliptic Y 1.10489982 +/- 0.0000
Ecliptic Z 0.64291474 +/- 0.0000
Ecliptic XDOT -0.00312408 +/- 0.0000
Ecliptic YDOT 0.00600789 +/- 0.0000
Ecliptic ZDOT 0.00040628 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 7.95237066 +/- 0.0002
Geocenter to KBO 7.02581150 +/- 0.0002
# Hcoef: 13.25
The following table shows the complete astrometric record for 24RU155. 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 (24RU155) followed by the observatory code and reference code for the source of the astrometry.
2024 09 09.414340 00 32 04.557 +09 10 27.34 22.3w 24RU155 F52 C~8Mqc 2024 09 09.426927 00 32 04.346 +09 10 26.31 22.2w 24RU155 F52 C~8Mqc 2024 09 09.439514 00 32 04.111 +09 10 25.28 22.0w 24RU155 F52 C~8Mqc 2024 09 09.452156 00 32 03.864 +09 10 24.17 22.4w 24RU155 F52 C~8Mqc 2024 09 28.341715 00 25 58.734 +08 41 09.03 22.7w 24RU155 F51 C~8Mqc 2024 09 28.354250 00 25 58.491 +08 41 07.66 22.1w 24RU155 F51 C~8Mqc 2024 09 28.366192 00 25 58.240 +08 41 06.44 22.1w 24RU155 F51 C~8Mqc 2024 09 28.379956 00 25 57.956 +08 41 04.99 22.1w 24RU155 F51 C~8Mqc 2024 10 01.13970 00 25 01.802 +08 36 03.73 22.2G 24RU155 309 C~8Mqc 2024 10 01.14093 00 25 01.739 +08 36 03.72 22.1G 24RU155 309 C~8Mqc 2024 10 01.14216 00 25 01.702 +08 36 03.61 22.1G 24RU155 309 C~8Mqc 2024 10 01.14341 00 25 01.722 +08 36 03.34 21.9G 24RU155 309 C~8Mqc 2024 10 01.14465 00 25 01.656 +08 36 03.41 22.1G 24RU155 309 C~8Mqc 2024 10 01.14588 00 25 01.645 +08 36 03.16 22.1G 24RU155 309 C~8Mqc 2024 10 01.14710 00 25 01.608 +08 36 03.12 21.9G 24RU155 309 C~8Mqc 2024 10 01.14955 00 25 01.552 +08 36 02.85 22.1G 24RU155 309 C~8Mqc 2024 10 01.15078 00 25 01.547 +08 36 02.78 22.2G 24RU155 309 C~8Mqc 2024 12 31.076790 00 14 00.608 +07 05 12.05 22.4G 24RU155 G37 C~8cTN 2024 12 31.128000 00 14 01.236 +07 05 14.76 24RU155 G37 C~8cTN 2024 12 31.179010 00 14 01.888 +07 05 17.66 24RU155 G37 C~8cTN 2025 08 29.470690 01 53 10.962 +18 38 48.94 21.9w 24RU155 F52 C~98UW 2025 08 29.484147 01 53 10.874 +18 38 49.31 22.1w 24RU155 F52 C~98UW 2025 08 29.511101 01 53 10.677 +18 38 50.24 22.1w 24RU155 F52 C~98UW 2025 09 17.431156 01 49 45.867 +18 39 55.79 21.7w 24RU155 F52 C~98UW 2025 09 17.444089 01 49 45.655 +18 39 55.61 21.8w 24RU155 F52 C~98UW 2025 09 17.457001 01 49 45.458 +18 39 55.01 21.5w 24RU155 F52 C~98UW 2025 09 17.470075 01 49 45.245 +18 39 54.44 22.0w 24RU155 F52 C~98UW
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 -0.03 0.00 0.10
2 0.0000 -3.28 0.17 0.29 -0.09
3 0.0001 -6.88 0.05 0.72 -0.14
4 0.0001 -10.68 -0.25 1.15 -0.20
5 0.0518 -5674.54 -0.17 541.24 0.04
6 0.0519 -5678.40 0.05 541.42 -0.08
7 0.0519 -5682.30 0.04 541.79 -0.01
8 0.0519 -5686.74 0.08 542.14 0.01
9 0.0595 -6571.28 0.35 598.83 -0.27
10 0.0595 -6572.14 -0.10 599.19 0.07
11 0.0595 -6572.69 -0.25 599.31 0.16
12 0.0595 -6572.52 0.33 598.95 -0.23
13 0.0595 -6573.39 -0.14 599.40 0.20
14 0.0595 -6573.64 0.02 599.24 0.00
15 0.0595 -6574.16 -0.10 599.42 0.16
16 0.0595 -6575.03 -0.17 599.51 0.19
17 0.0595 -6575.13 0.14 599.47 0.13
18 0.3085 -17801.68 0.03 -433.84 0.03
19 0.3086 -17791.96 -0.13 -435.16 -0.03
20 0.3087 -17781.84 0.09 -436.45 -0.04
21 0.9694 82289.21 0.09 6636.44 0.03
22 0.9694 82287.97 0.08 6637.23 -0.07
23 0.9695 82285.24 -0.17 6639.12 0.03
24 1.0213 79130.91 ( 0.07) 7677.73 ( 0.12)
25 1.0213 79127.57 ( -0.03) 7678.56 ( 0.31)
26 1.0213 79124.31 ( -0.05) 7678.88 ( 0.00)
27 1.0214 79120.81 ( -0.27) 7679.31 ( -0.21)
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.
24RU155 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 10.368 10.414 10.322 ecceobj 0.393 0.394 0.393 incobj 7.012 7.012 7.012 qmin 6.063 6.315 6.265 qmax 14.446 14.513 14.379 amean 9.714 10.130 9.970 amin 9.244 9.955 9.237 amax 10.368 10.417 10.322 emean 0.345 0.331 0.356 emin 0.320 0.255 0.303 emax 0.393 0.394 0.393 imean 7.273 10.151 8.402 imin 6.389 7.977 8.030 imax 8.297 15.622 9.180 excite_mean 0.367 0.379 0.385 fracstop 0.000 0.001 0.000 cjmean 4.163 4.050 4.090 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 207.6 213.2 174.2 kozaiamp 83.4 74.4 57.2