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: 17FF226 # Created Sun Nov 24 02:10:51 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 61 observations of 61 # Arc: 20.03y # First observation: 1998/01/05 # Last observation: 2018/01/17 # Chi-squared of fit: 51.60 DOF: 116 RMS: 0.16 # Min/Max residuals: -0.84 0.43 # Exact a, adot, b, bdot, g, gdot: 1.485872E-05 2.065093E-02 2.656532E-07 2.522575E-03 2.141476E-02 -6.065592E-03 # Covariance matrix: 1.4851E-13 -2.9153E-14 6.2423E-15 -2.9834E-15 -9.2185E-15 -4.6315E-14 -2.9153E-14 1.4712E-14 -3.7681E-15 1.7238E-15 2.1869E-14 2.7034E-14 6.2423E-15 -3.7681E-15 1.0158E-13 -5.9215E-15 -5.6705E-15 -7.1027E-15 -2.9834E-15 1.7238E-15 -5.9215E-15 5.7014E-16 2.2052E-15 3.2738E-15 -9.2185E-15 2.1869E-14 -5.6705E-15 2.2052E-15 1.1511E-13 3.6027E-14 -4.6315E-14 2.7034E-14 -7.1027E-15 3.2738E-15 3.6027E-14 5.1252E-14 # lat0 lon0 xBary yBary zBary JD0 -14.773606 127.357630 0.374367 -0.233574 -0.884821 2450818.738081 # Heliocentric elements and errors Epoch: 2450818.5000 = 1998/01/05 Mean Anomaly: 325.11384 +/- 0.005 Argument of Peri: 4.59193 +/- 0.006 Long of Asc Node: 190.80035 +/- 0.000 Inclination: 16.05774 +/- 0.000 Eccentricity: 0.35926707 +/- 0.0000 Semi-Major Axis: 61.53425775 +/- 0.0053 Time of Perihelion: 2467903.8767 +/- 20.7 Perihelion: 39.42702541 +/- 0.0040 Aphelion: 83.64149008 +/- 0.0075 Period (y) 482.7071 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -27.64862793 +/- 0.0004 Ecliptic Y 36.84115046 +/- 0.0006 Ecliptic Z -11.90765784 +/- 0.0002 Ecliptic XDOT -0.00169047 +/- 0.0000 Ecliptic YDOT -0.00212445 +/- 0.0000 Ecliptic ZDOT 0.00050948 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.57656495 +/- 0.0005 Geocenter to KBO 46.69700390 +/- 0.0007 # Hcoef: 6.54
The following table shows the complete astrometric record for 17FF226. 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 (17FF226) followed by the observatory code and reference code for the source of the astrometry.
1998 01 05.237350 08 24 07.82 +04 06 55.9 17FF226 950 C~7gvB 1998 01 05.248067 08 24 07.77 +04 06 55.8 17FF226 950 C~7gvB 1998 01 05.259676 08 24 07.72 +04 06 55.7 17FF226 950 C~7gvB 1998 01 07.246175 08 23 59.79 +04 07 13.3 17FF226 950 C~7gvB 1998 01 07.258762 08 23 59.73 +04 07 13.5 17FF226 950 C~7gvB 1998 01 07.276823 08 23 59.67 +04 07 13.8 17FF226 950 C~7gvB 1998 01 07.288889 08 23 59.59 +04 07 14.2 17FF226 950 C~7gvB 2001 01 25.304209 08 37 12.46 +03 44 13.3 17FF226 645 C~7gvB 2001 01 25.305038 08 37 12.42 +03 44 13.3 17FF226 645 C~7gvB 2001 01 25.307526 08 37 12.47 +03 44 13.2 17FF226 645 C~7gvB 2001 02 20.312872 08 35 24.99 +03 53 16.7 17FF226 645 C~7gvB 2001 02 20.315360 08 35 25.00 +03 53 16.5 17FF226 645 C~7gvB 2002 02 13.248067 08 40 50.88 +03 41 00.4 22.8r 17FF226 645 C~7gvB 2002 02 13.248897 08 40 50.88 +03 41 00.4 22.5i 17FF226 645 C~7gvB 2002 02 13.251384 08 40 50.86 +03 41 00.5 23.4g 17FF226 645 C~7gvB 2002 03 05.128116 08 39 36.69 +03 49 08.1 17FF226 645 C~7gvB 2002 03 05.128945 08 39 36.68 +03 49 08.0 17FF226 645 C~7gvB 2006 11 18.443426 09 10 50.83 +02 42 04.2 17FF226 645 C~7gvB 2006 11 18.445914 09 10 50.81 +02 42 04.5 17FF226 645 C~7gvB 2015 02 22.124965 09 50 02.340 +01 21 32.26 23.6g 17FF226 W84 C~8HKw 2015 02 24.170963 09 49 53.450 +01 22 29.75 23.8g 17FF226 W84 C~8HKw 2015 03 08.229224 09 49 02.85 +01 28 23.0 17FF226 W84 C~7gvB 2015 03 08.283637 09 49 02.65 +01 28 24.8 22.1i 17FF226 W84 C~7gvB 2015 03 14.033467 09 48 40.200 +01 31 19.09 22.5i 17FF226 W84 C~8HKw 2015 03 14.116261 09 48 39.886 +01 31 21.65 22.9r 17FF226 W84 C~8HKw 2015 03 14.168634 09 48 39.682 +01 31 23.30 23.7g 17FF226 W84 C~8HKw 2016 01 14.308169 09 58 32.690 +00 55 17.65 23.7g 17FF226 W84 C~8HKw 2017 02 02.38198 10 03 07.01 +00 48 11.3 23.0r 17FF226 T09 C~7dLC 2017 02 02.56579 10 03 06.22 +00 48 15.3 22.6i 17FF226 T09 C~7dLC 2017 02 02.58520 10 03 06.12 +00 48 15.7 22.6i 17FF226 T09 C~7dLC 2017 02 23.33599 10 01 35.43 +00 57 04.9 23.5g 17FF226 T09 C~7dLC 2017 02 23.46966 10 01 34.84 +00 57 09.0 23.0r 17FF226 T09 C~7dLC 2017 02 23.48331 10 01 34.78 +00 57 09.3 22.9r 17FF226 T09 C~7dLC 2017 02 23.49694 10 01 34.72 +00 57 09.5 22.8r 17FF226 T09 C~7dLC 2017 03 01.139248 10 01 10.178 +00 59 54.67 22.1g 17FF226 W84 C~8HKw 2017 03 03.121626 10 01 01.711 +01 00 54.18 22.8r 17FF226 W84 C~8HKw 2017 03 04.27055 10 00 56.84 +01 01 28.4 22.3z 17FF226 T09 C~7dLC 2017 03 04.29603 10 00 56.73 +01 01 29.3 22.4z 17FF226 T09 C~7dLC 2017 03 04.45958 10 00 56.02 +01 01 34.2 22.5i 17FF226 T09 C~7dLC 2017 03 07.42363 10 00 43.64 +01 03 04.6 22.3y 17FF226 T09 C~7dLC 2017 03 07.46825 10 00 43.45 +01 03 05.9 22.3y 17FF226 T09 C~7dLC 2017 03 07.50999 10 00 43.27 +01 03 07.1 22.3y 17FF226 T09 C~7dLC 2017 03 07.51809 10 00 43.23 +01 03 07.3 22.2y 17FF226 T09 C~7dLC 2017 03 22.41670 09 59 45.90 +01 10 49.4 22.4z 17FF226 T09 C~7dLC 2017 03 22.44235 09 59 45.81 +01 10 50.0 22.6z 17FF226 T09 C~7dLC 2017 03 22.46802 09 59 45.72 +01 10 50.9 22.7z 17FF226 T09 C~7dLC 2017 03 22.48979 09 59 45.64 +01 10 51.5 22.4z 17FF226 T09 C~7dLC 2017 03 23.089577 09 59 43.517 +01 11 10.68 22.4V 17FF226 W84 C~8HKw 2017 03 24.180277 09 59 39.782 +01 11 44.02 23.0V 17FF226 W84 C~8HKw 2017 03 25.24634 09 59 36.19 +01 12 16.6 23.2r 17FF226 T09 C~7dLC 2017 03 25.26003 09 59 36.16 +01 12 17.1 23.1r 17FF226 T09 C~7dLC 2017 03 25.27375 09 59 36.10 +01 12 17.6 23.1r 17FF226 T09 C~7dLC 2017 03 25.28747 09 59 36.06 +01 12 17.9 23.1r 17FF226 T09 C~7dLC 2017 03 27.086967 09 59 30.110 +01 13 13.37 23.5g 17FF226 W84 C~8HKw 2018 01 17.46122 10 10 05.13 +00 30 26.7 22.8i 17FF226 T09 C~7gvB 2018 01 17.46727 10 10 05.10 +00 30 26.6 22.8i 17FF226 T09 C~7gvB 2018 01 17.48599 10 10 05.04 +00 30 26.9 22.7i 17FF226 T09 C~7gvB 2018 01 17.51296 10 10 04.95 +00 30 27.2 22.8i 17FF226 T09 C~7gvB 2018 01 17.54803 10 10 04.82 +00 30 27.7 22.7i 17FF226 T09 C~7gvB 2018 01 17.57490 10 10 04.72 +00 30 28.2 22.6i 17FF226 T09 C~7gvB 2018 01 17.59901 10 10 04.63 +00 30 28.4 22.7i 17FF226 T09 C~7gvB
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 0.16 0.00 0.30
2 0.0000 0.00 0.05 0.00 0.11
3 0.0001 0.00 0.00 0.00 -0.09
4 0.0055 0.00 0.20 0.00 -0.17
5 0.0055 0.00 0.06 0.00 -0.09
6 0.0056 0.00 0.26 0.00 0.04
7 0.0056 0.00 -0.20 0.00 0.33
8 3.0556 0.00 -0.30 0.00 -0.12
9 3.0556 0.00 -0.84 0.00 -0.13
10 3.0556 0.00 0.07 0.00 -0.28
11 3.1268 0.00 -0.31 0.00 -0.08
12 3.1268 0.00 -0.02 0.00 -0.34
13 4.1068 0.00 0.15 0.00 0.08
14 4.1068 0.00 0.20 0.00 0.06
15 4.1068 0.00 0.06 0.00 0.10
16 4.1612 0.00 0.17 0.00 0.01
17 4.1612 0.00 0.06 0.00 -0.11
18 8.8685 0.00 0.29 0.00 0.07
19 8.8685 0.00 0.00 0.00 0.41
20 17.1304 0.00 -0.10 0.00 0.04
21 17.1360 0.00 0.06 0.00 0.08
22 17.1690 0.00 -0.28 0.00 -0.22
23 17.1692 0.00 0.05 0.00 -0.06
24 17.1849 0.00 -0.05 0.00 -0.02
25 17.1852 0.00 0.03 0.00 0.02
26 17.1853 0.00 -0.00 0.00 0.08
27 18.0235 0.00 0.04 0.00 0.02
28 19.0777 0.00 0.07 0.00 0.01
29 19.0782 0.00 0.09 0.00 0.02
30 19.0783 0.00 -0.15 0.00 -0.00
31 19.1351 0.00 -0.10 0.00 -0.17
32 19.1355 0.00 0.01 0.00 0.11
33 19.1355 0.00 0.02 0.00 0.02
34 19.1356 0.00 0.04 0.00 -0.17
35 19.1510 0.00 -0.09 0.00 -0.12
36 19.1564 0.00 0.13 0.00 0.06
37 19.1596 0.00 0.08 0.00 -0.21
38 19.1596 0.00 0.06 0.00 -0.08
39 19.1601 0.00 -0.03 0.00 -0.13
40 19.1682 0.00 0.13 0.00 0.01
41 19.1683 0.00 0.10 0.00 -0.06
42 19.1684 0.00 0.03 0.00 -0.13
43 19.1685 0.00 -0.06 0.00 -0.18
44 19.2093 0.00 0.03 0.00 0.16
45 19.2093 0.00 0.05 0.00 -0.03
46 19.2094 0.00 0.08 0.00 0.07
47 19.2095 0.00 0.04 0.00 -0.00
48 19.2111 0.00 -0.57 0.00 0.43
49 19.2141 0.00 -0.12 0.00 0.06
50 19.2170 0.00 -0.04 0.00 -0.05
51 19.2170 0.00 0.21 0.00 0.02
52 19.2171 0.00 0.02 0.00 0.10
53 19.2171 0.00 0.12 0.00 -0.02
54 19.2220 0.00 0.07 0.00 0.02
55 20.0335 0.00 -0.02 0.00 0.20
56 20.0335 0.00 -0.15 0.00 0.01
57 20.0335 0.00 -0.03 0.00 0.05
58 20.0336 0.00 0.07 0.00 -0.02
59 20.0337 0.00 0.02 0.00 -0.01
60 20.0338 0.00 -0.02 0.00 0.12
61 20.0338 0.00 -0.07 0.00 -0.02
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.
17FF226 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 61.950 61.950 61.951 ecceobj 0.361 0.361 0.361 incobj 16.061 16.061 16.061 qmin 38.363 38.333 38.331 qmax 87.162 87.143 87.215 amean 62.121 62.117 62.121 amin 61.390 61.425 61.421 amax 63.104 63.055 63.132 emean 0.367 0.367 0.367 emin 0.353 0.353 0.353 emax 0.382 0.382 0.382 imean 15.634 15.636 15.635 imin 15.125 15.137 15.124 imax 16.237 16.237 16.244 excite_mean 0.455 0.455 0.455 fracstop 1.000 1.000 1.000 cjmean 3.058 3.058 3.058 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 167.2 167.1 167.2 kozaiamp 180.0 179.9 180.0