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: 17QF33
# Created Fri Nov 22 02:10:54 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 71 observations of 71
# Arc: 4.14y
# First observation: 2016/08/07
# Last observation: 2020/09/26
# Chi-squared of fit: 230.73 DOF: 136 RMS: 0.32
# Min/Max residuals: -1.81 0.81
# Exact a, adot, b, bdot, g, gdot:
3.972043E-05 3.389879E-01 8.884842E-07 -2.649343E-03 1.356708E-01 -1.765828E-01
# Covariance matrix:
3.7453E-13 -1.1280E-10 -2.9910E-17 3.2111E-12 4.0346E-12 -1.1067E-10
-1.1280E-10 1.7282E-06 4.5891E-13 -4.9332E-08 -6.2135E-08 1.7002E-06
-2.9910E-17 4.5891E-13 3.6720E-13 -3.1233E-13 -1.5936E-14 4.5134E-13
3.2111E-12 -4.9332E-08 -3.1233E-13 1.4564E-09 1.7759E-09 -4.8534E-08
4.0346E-12 -6.2135E-08 -1.5936E-14 1.7759E-09 2.3877E-09 -6.1171E-08
-1.1067E-10 1.7002E-06 4.5134E-13 -4.8534E-08 -6.1171E-08 1.6727E-06
# lat0 lon0 xBary yBary zBary JD0
3.563867 -70.564729 -0.442495 0.056869 -0.911322 2457607.842759
# Heliocentric elements and errors
Epoch: 2457608.5000 = 2016/08/08
Mean Anomaly: 352.82972 +/- 0.010
Argument of Peri: 163.02587 +/- 0.014
Long of Asc Node: 188.16346 +/- 0.014
Inclination: 3.26770 +/- 0.000
Eccentricity: 0.73412535 +/- 0.0000
Semi-Major Axis: 24.84573545 +/- 0.0000
Time of Perihelion: 2458509.4696 +/- 1.3
Perihelion: 6.60585124 +/- 0.0011
Aphelion: 43.08561966 +/- 0.0011
Period (y) 123.8471 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 3.16552542 +/- 0.0000
Ecliptic Y -7.65400597 +/- 0.0000
Ecliptic Z 0.45823399 +/- 0.0000
Ecliptic XDOT 0.00527004 +/- 0.0000
Ecliptic YDOT 0.00562000 +/- 0.0000
Ecliptic ZDOT -0.00027489 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 8.29557400 +/- 0.0000
Geocenter to KBO 7.37097238 +/- 0.0000
# Hcoef: 13.07
The following table shows the complete astrometric record for 17QF33. 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 (17QF33) followed by the observatory code and reference code for the source of the astrometry.
2016 08 07.34197 19 21 59.908 -18 30 10.71 22.2G 17QF33 F51 C~2jiV 2016 08 07.35407 19 21 59.687 -18 30 11.27 22.3G 17QF33 F51 C~2jiV 2016 08 07.36619 19 21 59.487 -18 30 11.79 22.3G 17QF33 F51 C~2jiV 2016 08 07.37832 19 21 59.278 -18 30 12.46 22.2G 17QF33 F51 C~2jiV 2017 07 01.56912 21 06 33.561 -13 18 54.83 22.0w 17QF33 F51 C~2Jz4 2017 07 01.57883 21 06 33.432 -13 18 55.42 22.3w 17QF33 F51 C~2Jz4 2017 07 01.58860 21 06 33.317 -13 18 55.72 22.4w 17QF33 F51 C~2Jz4 2017 07 01.59828 21 06 33.188 -13 18 56.13 22.1w 17QF33 F51 C~2Jz4 2017 07 15.58441 21 03 11.799 -13 32 14.46 21.4i 17QF33 F51 C~2Jz4 2017 07 15.59700 21 03 11.554 -13 32 15.54 21.3i 17QF33 F51 C~2Jz4 2017 07 26.45586 20 59 59.518 -13 46 05.21 21.5w 17QF33 F51 C~2Y59 2017 07 26.46683 20 59 59.319 -13 46 06.21 21.5w 17QF33 F51 C~2Y59 2017 07 26.47780 20 59 59.099 -13 46 06.90 21.5w 17QF33 F51 C~2Y59 2017 07 26.48876 20 59 58.900 -13 46 07.79 21.7w 17QF33 F51 C~2Y59 2017 07 30.44426 20 58 44.271 -13 51 42.26 22.2w 17QF33 F51 C~2Jz4 2017 07 30.45523 20 58 44.052 -13 51 43.34 22.0w 17QF33 F51 C~2Jz4 2017 07 30.46620 20 58 43.834 -13 51 44.23 21.7w 17QF33 F51 C~2Jz4 2017 07 30.47717 20 58 43.616 -13 51 45.14 21.7w 17QF33 F51 C~2Jz4 2017 08 16.32286 20 53 21.636 -14 17 04.26 21.5w 17QF33 F51 C~2Jz4 2017 08 16.33501 20 53 21.421 -14 17 05.42 21.5w 17QF33 F51 C~2Jz4 2017 08 16.34709 20 53 21.168 -14 17 06.65 21.7w 17QF33 F51 C~2Jz4 2017 08 16.35913 20 53 20.941 -14 17 07.52 21.8w 17QF33 F51 C~2Jz4 2017 08 23.346994 20 51 15.175 -14 27 39.94 21.4G 17QF33 568 C~2Jz4 2017 08 23.348177 20 51 15.154 -14 27 40.07 21.5G 17QF33 568 C~2Jz4 2017 08 23.349361 20 51 15.133 -14 27 40.18 21.4G 17QF33 568 C~2Jz4 2017 08 26.30985 20 50 24.966 -14 32 01.14 21.5w 17QF33 F51 C~2Y59 2017 08 26.32388 20 50 24.736 -14 32 02.19 21.5w 17QF33 F51 C~2Y59 2017 08 26.33794 20 50 24.496 -14 32 03.20 21.6w 17QF33 F51 C~2Y59 2017 08 30.27804 20 49 21.34 -14 37 41.0 21.0R 17QF33 291 C~2Jz4 2017 08 30.32805 20 49 20.56 -14 37 45.5 21.2R 17QF33 291 C~2Jz4 2017 08 30.37351 20 49 19.84 -14 37 48.9 21.3R 17QF33 291 C~2Jz4 2017 09 14.31804 20 46 09.568 -14 56 39.84 21.4G 17QF33 F51 C~2jiV 2017 09 14.33061 20 46 09.443 -14 56 40.62 21.8G 17QF33 F51 C~2jiV 2017 09 14.34319 20 46 09.306 -14 56 41.43 21.7G 17QF33 F51 C~2jiV 2017 09 14.35575 20 46 09.188 -14 56 42.27 21.7G 17QF33 F51 C~2jiV 2017 09 24.25268 20 44 55.960 -15 06 15.02 22.2G 17QF33 F51 C~2jiV 2017 09 24.26243 20 44 55.917 -15 06 15.62 21.6G 17QF33 F51 C~2jiV 2017 09 27.17101 20 44 43.64 -15 08 31.2 22.4R 17QF33 291 C~2LVP 2017 09 27.20697 20 44 43.47 -15 08 32.9 22.1R 17QF33 291 C~2LVP 2017 09 27.23703 20 44 43.35 -15 08 34.4 17QF33 291 C~2LVP 2017 10 12.22436 20 44 52.003 -15 15 49.53 21.7G 17QF33 F51 C~2jiV 2017 10 12.23664 20 44 52.058 -15 15 49.62 21.6G 17QF33 F51 C~2jiV 2017 10 12.24890 20 44 52.102 -15 15 49.74 21.9G 17QF33 F51 C~2jiV 2017 10 12.26121 20 44 52.153 -15 15 49.89 21.7G 17QF33 F51 C~2jiV 2018 09 04.10006 22 43 51.69 -06 06 17.6 20.8R 17QF33 W49 C~2jiV 2018 09 04.15239 22 43 50.60 -06 06 25.9 20.2R 17QF33 W49 C~2jiV 2018 09 04.34068 22 43 47.17 -06 06 49.3 20.1R 17QF33 U69 C~2kSs 2018 09 04.35186 22 43 46.97 -06 06 50.3 17QF33 U69 C~2kSs 2018 09 05.16059 22 43 31.99 -06 08 34.9 20.6R 17QF33 W49 C~2jiV 2018 09 05.20535 22 43 31.12 -06 08 41.3 20.7R 17QF33 W49 C~2jiV 2018 09 05.24580 22 43 30.46 -06 08 47.7 20.2R 17QF33 W49 C~2jiV 2018 09 05.39315 22 43 27.80 -06 09 06.1 20.2R 17QF33 U69 C~2kSs 2018 09 05.41299 22 43 27.39 -06 09 08.0 17QF33 U69 C~2kSs 2019 06 11.58604 00 35 42.253 +04 14 14.75 22.0w 17QF33 F51 C~36sl 2019 06 11.59119 00 35 42.414 +04 14 16.00 21.7w 17QF33 F51 C~36sl 2019 06 11.59635 00 35 42.530 +04 14 16.49 22.0w 17QF33 F51 C~36sl 2019 06 11.60150 00 35 42.678 +04 14 17.45 21.6w 17QF33 F51 C~36sl 2019 09 27.44425 00 39 15.521 +04 07 13.42 21.2w 17QF33 F51 C~3JGZ 2019 09 27.45566 00 39 15.304 +04 07 11.74 21.4w 17QF33 F51 C~3JGZ 2019 09 27.46702 00 39 15.078 +04 07 10.33 21.2w 17QF33 F51 C~3JGZ 2019 09 27.47838 00 39 14.873 +04 07 08.96 21.3w 17QF33 F51 C~3JGZ 2019 11 01.23937 00 29 30.28 +02 54 07.1 22.3g 17QF33 T09 C~7bOy 2019 11 01.36607 00 29 28.619 +02 53 54.59 21.2w 17QF33 F52 C~3Q7M 2019 11 01.38956 00 29 28.301 +02 53 52.22 21.4w 17QF33 F52 C~3Q7M 2019 11 01.39226 00 29 28.26 +02 53 51.8 21.9g 17QF33 T09 C~7bOy 2019 11 01.40129 00 29 28.116 +02 53 51.22 21.7w 17QF33 F52 C~3Q7M 2019 11 01.46982 00 29 27.23 +02 53 44.0 22.1g 17QF33 T09 C~7bOy 2020 09 26.57303 02 26 33.121 +12 48 19.10 21.9w 17QF33 F51 C~4AVY 2020 09 26.58749 02 26 32.933 +12 48 17.50 22.0w 17QF33 F51 C~4AVY 2020 09 26.60191 02 26 32.731 +12 48 16.33 21.9w 17QF33 F51 C~4AVY 2020 09 26.61632 02 26 32.539 +12 48 15.24 21.7w 17QF33 F51 C~4AVY
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 -0.01 0.00 -0.25
2 0.0000 0.00 -0.29 0.00 -0.24
3 0.0001 0.00 -0.26 0.00 -0.19
4 0.0001 0.00 -0.36 0.00 -0.29
5 0.8986 0.00 -0.00 0.00 0.22
6 0.8987 0.00 -0.11 0.00 0.05
7 0.8987 0.00 0.00 0.00 0.17
8 0.8987 0.00 -0.11 0.00 0.18
9 0.9370 0.00 0.23 0.00 0.29
10 0.9370 0.00 -0.24 0.00 0.06
11 0.9668 0.00 0.02 0.00 -0.07
12 0.9668 0.00 0.19 0.00 -0.16
13 0.9668 0.00 0.06 0.00 0.05
14 0.9669 0.00 0.23 0.00 0.07
15 0.9777 0.00 0.03 0.00 0.30
16 0.9777 0.00 -0.03 0.00 0.17
17 0.9778 0.00 -0.07 0.00 0.23
18 0.9778 0.00 -0.11 0.00 0.26
19 1.0239 0.00 0.00 0.00 0.08
20 1.0239 0.00 0.26 0.00 0.04
21 1.0240 0.00 -0.08 0.00 -0.08
22 1.0240 0.00 -0.03 0.00 0.16
23 1.0431 0.00 0.07 0.00 -0.07
24 1.0431 0.00 0.07 0.00 -0.09
25 1.0431 0.00 0.07 0.00 -0.10
26 1.0512 0.00 -0.03 0.00 -0.13
27 1.0513 0.00 0.12 0.00 0.05
28 1.0513 0.00 0.13 0.00 0.28
29 1.0621 0.00 -0.08 0.00 0.16
30 1.0622 0.00 0.14 0.00 -0.18
31 1.0624 0.00 0.12 0.00 0.18
32 1.1033 0.00 0.08 0.00 -0.13
33 1.1033 0.00 0.15 0.00 -0.08
34 1.1034 0.00 0.03 0.00 -0.07
35 1.1034 0.00 0.20 0.00 -0.09
36 1.1305 0.00 -0.02 0.00 0.03
37 1.1305 0.00 0.14 0.00 -0.09
38 1.1385 0.00 0.40 0.00 0.36
39 1.1386 0.00 -0.02 0.00 0.23
40 1.1387 0.00 -0.06 0.00 0.03
41 1.1797 0.00 0.08 0.00 -0.14
42 1.1797 0.00 0.15 0.00 -0.06
43 1.1798 0.00 0.05 0.00 -0.02
44 1.1798 0.00 0.05 0.00 -0.01
45 2.0746 0.00 0.64 0.00 0.40
46 2.0748 0.00 -0.91 0.00 -1.10
47 2.0753 0.00 0.26 0.00 -0.14
48 2.0753 0.00 0.44 0.00 0.30
49 2.0775 0.00 -1.45 0.00 0.55
50 2.0777 0.00 -1.81 0.00 -0.04
51 2.0778 0.00 -0.23 0.00 -1.20
52 2.0782 0.00 0.81 0.00 -0.54
53 2.0782 0.00 0.27 0.00 0.13
54 2.8426 0.00 -0.19 0.00 -0.20
55 2.8426 0.00 0.19 0.00 0.24
56 2.8426 0.00 -0.11 0.00 -0.09
57 2.8426 0.00 0.08 0.00 0.06
58 3.1379 0.00 0.19 0.00 0.14
59 3.1379 0.00 0.16 0.00 0.00
60 3.1379 0.00 -0.02 0.00 0.13
61 3.1380 0.00 0.11 0.00 0.30
62 3.2331 0.00 -0.08 0.00 0.01
63 3.2335 0.00 0.36 0.00 0.08
64 3.2335 0.00 0.29 0.00 0.04
65 3.2335 0.00 0.23 0.00 -0.13
66 3.2336 0.00 -0.15 0.00 0.21
67 3.2338 0.00 0.18 0.00 -0.24
68 4.1375 0.00 -0.12 0.00 0.20
69 4.1376 0.00 -0.01 0.00 -0.16
70 4.1376 0.00 -0.12 0.00 -0.08
71 4.1376 0.00 -0.09 0.00 0.07
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.
17QF33 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 24.803 24.803 24.803 ecceobj 0.736 0.736 0.736 incobj 3.280 3.280 3.280 qmin 6.490 6.513 6.552 qmax 51.655 43.053 43.054 amean 27.015 24.636 24.803 amin 24.309 24.522 24.803 amax 29.124 24.803 24.803 emean 0.756 0.734 0.736 emin 0.733 0.733 0.736 emax 0.774 0.736 0.736 imean 3.413 3.458 3.402 imin 3.333 3.402 3.402 imax 3.638 3.564 3.402 excite_mean 0.758 0.737 0.738 fracstop 0.000 0.000 0.000 cjmean 2.357 2.448 2.442 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 171.7 164.7 163.1 kozaiamp 7.9 1.7 0.0