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: 17FV241 # Created Sun Dec 22 02:11:00 2024 # Orbit generated from Bernstein formalism # Fitting 24 observations of 25 # Arc: 4.21y # First observation: 2015/01/17 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000017 0.025231 0.000045 -0.000997 0.025836 0.000000 # Chi-squared of fit: 14.14 DOF: 42 RMS: 0.14 # Min/Max residuals: -0.36 0.24 # Exact a, adot, b, bdot, g, gdot: 1.581127E-05 2.431866E-02 7.769637E-09 -9.543867E-04 2.461992E-02 -7.862224E-03 # Covariance matrix: 6.2906E-13 -4.4037E-15 1.3203E-14 -9.7585E-16 7.0243E-13 -9.0023E-13 -4.4037E-15 1.6936E-12 8.9298E-14 -7.0298E-14 2.4419E-12 1.3909E-11 1.3203E-14 8.9298E-14 2.3448E-13 -1.0379E-13 1.4471E-13 7.2505E-13 -9.7585E-16 -7.0298E-14 -1.0379E-13 6.1816E-14 -1.0055E-13 -6.1174E-13 7.0243E-13 2.4419E-12 1.4471E-13 -1.0055E-13 4.4421E-12 1.8342E-11 -9.0023E-13 1.3909E-11 7.2505E-13 -6.1174E-13 1.8342E-11 1.2580E-10 # lat0 lon0 xBary yBary zBary JD0 -8.354702 150.800197 0.552513 -0.117759 -0.803031 2457039.855472 # Heliocentric elements and errors Epoch: 2457030.5000 = 2015/01/08 Mean Anomaly: 311.55353 +/- 0.049 Argument of Peri: 340.84010 +/- 0.024 Long of Asc Node: 255.80247 +/- 0.004 Inclination: 8.50615 +/- 0.000 Eccentricity: 0.34471181 +/- 0.0005 Semi-Major Axis: 48.01788303 +/- 0.0291 Time of Perihelion: 2473385.9532 +/- 7.4 Perihelion: 31.46555163 +/- 0.0316 Aphelion: 64.57021442 +/- 0.0465 Period (y) 332.7459 +/- 0.30 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.52186461 +/- 0.0030 Ecliptic Y 20.48369449 +/- 0.0017 Ecliptic Z -5.90179146 +/- 0.0005 Ecliptic XDOT -0.00055464 +/- 0.0000 Ecliptic YDOT -0.00279557 +/- 0.0000 Ecliptic ZDOT 0.00002213 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.42723438 +/- 0.0027 Geocenter to KBO 40.61750877 +/- 0.0035 # Hcoef: 9.06
The following table shows the complete astrometric record for 17FV241. 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 (17FV241) followed by the observatory code and reference code for the source of the astrometry.
2015 01 17.354694 09 59 35.99 +03 21 52.2 17FV241 T09 C~86vK 2015 01 17.373016 09 59 35.92 +03 21 52.5 17FV241 T09 C~86vK 2016 03 04.426185 10 01 17.03 +03 06 29.8 17FV241 T09 C~86vK 2016 03 04.44113 10 01 16.93 +03 06 30.2 25.4i 17FV241 T09 C~8COx 2016 03 04.455502 10 01 16.89 +03 06 30.7 17FV241 T09 C~86vK 2016 03 07.29117 10 01 04.12 +03 07 49.5 25.8g 17FV241 T09 C~8COx 2016 03 07.30127 10 01 04.10 +03 07 49.5 25.3g 17FV241 T09 C~8COx 2016 03 09.291907 10 00 55.31 +03 08 45.1 17FV241 T09 C~86vK 2016 03 09.302095 10 00 55.26 +03 08 45.3 17FV241 T09 C~86vK 2016 03 09.30973 10 00 55.21 +03 08 45.4 25.6r 17FV241 T09 C~8COx 2016 03 09.312216 10 00 55.21 +03 08 45.6 17FV241 T09 C~86vK 2016 03 12.40577 10 00 41.80 +03 10 12.1 25.1z 17FV241 T09 C~8COx 2016 03 12.42050 10 00 41.72 +03 10 12.8 24.8z 17FV241 T09 C~8COx 2017 03 04.314471 10 06 36.06 +02 33 10.4 17FV241 T09 C~86vK 2017 03 04.336483 10 06 35.94 +02 33 11.2 17FV241 T09 C~86vK 2017 03 22.38749 10 05 18.55 +02 41 43.3 25.1z 17FV241 T09 C~86vK 2017 03 22.41317 10 05 18.43 +02 41 44.0 24.4z 17FV241 T09 C~86vK 2017 03 22.43886 10 05 18.35 +02 41 44.8 24.6z 17FV241 T09 C~86vK 2017 03 22.46449 10 05 18.24 +02 41 45.7 24.9z 17FV241 T09 C~86vK 2017 03 25.24382 10 05 07.70 +02 43 03.7 25.4r 17FV241 T09 C~86vK 2017 03 25.25752 10 05 07.61 +02 43 03.7 24.9r 17FV241 T09 C~86vK 2017 03 25.27122 10 05 07.54 +02 43 04.1 25.0r 17FV241 T09 C~86vL 2017 03 25.28496 10 05 07.50 +02 43 04.6 25.2r 17FV241 T09 C~86vL 2019 04 05.337293 10 15 15.52 +01 40 15.8 17FV241 T09 C~86vL 2019 04 05.371659 10 15 15.40 +01 40 16.9 17FV241 T09 C~86vL
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 -0.04 0.00 -0.13
2 0.0001 -1.09 -0.02 -0.08 -0.06
3 1.1282 1739.65 0.22 -338.12 0.13
4 1.1282 1738.10 -0.20 -338.27 -0.04
5 1.1283 1737.37 0.13 -338.00 0.19
6 1.1360 1530.62 -0.34 -330.73 0.10
7 1.1361 1530.34 0.12 -330.84 -0.03
8 1.1415 1387.56 0.24 -324.55 0.08
9 1.1415 1386.79 0.20 -324.62 -0.02
10 1.1416 1386.05 0.02 -324.79 -0.21
11 1.1416 1385.98 0.13 -324.60 -0.03
12 1.1500 1167.58 -0.03 -313.43 -0.12
13 1.1501 1166.21 -0.36 -313.19 0.07
14 2.1272 6919.02 0.18 -545.11 -0.01
15 2.1273 6917.06 -0.13 -544.99 0.07
16 2.1767 5650.42 0.11 -469.97 -0.02
17 2.1768 5648.48 -0.14 -469.94 -0.14
18 2.1768 5647.08 0.14 -469.61 0.05
19 2.1769 5645.22 -0.04 -469.34 0.18
20 2.1845 5469.88 ( 0.46) -451.36 ( 0.58)
21 2.1845 5468.61 0.06 -451.83 0.02
22 2.1846 5467.49 -0.19 -451.82 -0.06
23 2.1846 5466.75 -0.06 -451.56 0.12
24 4.2135 15349.88 0.06 -794.59 -0.13
25 4.2136 15347.80 -0.06 -794.19 -0.01
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.
17FV241 quality flag:2 Type: 2:1E CENTAURS 2:1E axisobj 47.568 47.640 47.496 ecceobj 0.340 0.342 0.339 incobj 8.496 8.496 8.496 qmin 30.674 29.685 30.632 qmax 66.196 80.443 66.241 amean 47.795 49.427 47.795 amin 47.068 46.607 47.023 amax 48.697 55.556 48.725 emean 0.342 0.368 0.346 emin 0.322 0.328 0.333 emax 0.361 0.448 0.361 imean 10.207 9.797 9.978 imin 9.792 6.523 9.652 imax 10.991 12.147 10.294 excite_mean 0.385 0.406 0.387 fracstop 1.000 1.000 1.000 cjmean 2.960 2.953 2.957 libcent 0 180.7 -180.0 180.4 libamp 0 156.1 -180.0 159.7 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 174.4 170.0 175.0 kozaiamp 180.0 179.9 180.0