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: 15QX33 # Created Thu Apr 25 01:17:21 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 3.96y # First observation: 2014/12/17 # Last observation: 2018/12/03 Preliminary a, adot, b, bdot, g, gdot: -0.000212 0.028682 0.000084 0.001775 0.027485 0.000000 # Chi-squared of fit: 7.70 DOF: 52 RMS: 0.09 # Min/Max residuals: -0.21 0.22 # Exact a, adot, b, bdot, g, gdot: 1.607585E-05 2.845741E-02 1.522086E-06 1.781615E-03 2.684335E-02 9.082406E-04 # Covariance matrix: 8.6317E-13 -6.9176E-13 -2.9896E-14 -1.5975E-14 -3.2750E-13 -4.4155E-12 -6.9176E-13 8.4917E-13 -1.7482E-14 2.8382E-14 1.8952E-13 6.3261E-12 -2.9896E-14 -1.7482E-14 1.8763E-13 -7.4476E-14 3.3381E-14 -2.2538E-13 -1.5975E-14 2.8382E-14 -7.4476E-14 4.2186E-14 1.6622E-15 2.3396E-13 -3.2750E-13 1.8952E-13 3.3381E-14 1.6622E-15 2.0230E-13 1.1107E-12 -4.4155E-12 6.3261E-12 -2.2538E-13 2.3396E-13 1.1107E-12 5.0401E-11 # lat0 lon0 xBary yBary zBary JD0 -25.262892 14.397395 -0.926119 -0.141059 -0.299387 2457008.653288 # Heliocentric elements and errors Epoch: 2457000.5000 = 2014/12/09 Mean Anomaly: 34.37513 +/- 0.090 Argument of Peri: 238.08894 +/- 0.115 Long of Asc Node: 96.10814 +/- 0.001 Inclination: 25.36882 +/- 0.000 Eccentricity: 0.09019843 +/- 0.0002 Semi-Major Axis: 40.45473254 +/- 0.0036 Time of Perihelion: 2448026.3297 +/- 23.3 Perihelion: 36.80577900 +/- 0.0089 Aphelion: 44.10368609 +/- 0.0092 Period (y) 257.3133 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.71956815 +/- 0.0005 Ecliptic Y 9.35778385 +/- 0.0002 Ecliptic Z -15.89863636 +/- 0.0003 Ecliptic XDOT -0.00056950 +/- 0.0000 Ecliptic YDOT 0.00284629 +/- 0.0000 Ecliptic ZDOT 0.00012490 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.56201401 +/- 0.0005 Geocenter to KBO 37.25317597 +/- 0.0006 # Hcoef: 7.54
The following table shows the complete astrometric record for 15QX33. 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 (15QX33) followed by the observatory code and reference code for the source of the astrometry.
2014 12 17.15251 01 32 56.409 -17 35 03.69 23.2r 15QX33 W84 C~55Wd 2015 08 19.42115 01 47 20.261 -16 11 51.95 22.8i 15QX33 W84 C~55Wd 2015 08 23.40206 01 47 12.039 -16 14 50.47 23.4r 15QX33 W84 C~55Wd 2015 08 23.40344 01 47 12.033 -16 14 50.46 23.5i 15QX33 W84 C~55Wd 2015 08 24.40244 01 47 09.754 -16 15 35.55 23.4r 15QX33 W84 C~55Wd 2015 08 24.40383 01 47 09.737 -16 15 35.65 23.2i 15QX33 W84 C~55Wd 2015 08 24.40521 01 47 09.758 -16 15 35.52 23.5r 15QX33 W84 C~55Wd 2015 10 22.23322 01 42 57.697 -16 52 44.07 22.8z 15QX33 W84 C~55Wd 2015 11 05.18590 01 41 44.686 -16 56 29.46 23.1i 15QX33 W84 C~55Wd 2015 11 07.16552 01 41 34.669 -16 56 47.83 23.2z 15QX33 W84 C~55Wd 2015 12 01.09291 01 39 48.298 -16 55 38.21 23.6r 15QX33 W84 C~55Wd 2015 12 01.09428 01 39 48.290 -16 55 38.20 23.0i 15QX33 W84 C~55Wd 2016 09 30.26132 01 50 49.512 -15 55 06.52 23.1i 15QX33 W84 C~55Wd 2016 09 30.26268 01 50 49.512 -15 55 06.65 22.8r 15QX33 W84 C~55Wd 2016 09 30.26406 01 50 49.498 -15 55 06.60 24.0g 15QX33 W84 C~55Wd 2016 09 30.26542 01 50 49.502 -15 55 06.66 23.5r 15QX33 W84 C~55Wd 2016 09 30.26680 01 50 49.488 -15 55 06.63 23.1i 15QX33 W84 C~55Wd 2016 09 30.26817 01 50 49.492 -15 55 06.73 23.5g 15QX33 W84 C~55Wd 2016 10 02.22503 01 50 39.955 -15 56 17.10 23.1r 15QX33 W84 C~55Wd 2016 10 02.22641 01 50 39.952 -15 56 17.07 22.9i 15QX33 W84 C~55Wd 2016 10 02.22780 01 50 39.933 -15 56 17.27 23.6g 15QX33 W84 C~55Wd 2017 11 27.07762 01 51 59.781 -15 23 14.77 24.0i 15QX33 W84 C~55Wd 2017 11 27.07899 01 51 59.774 -15 23 14.81 22.9z 15QX33 W84 C~55Wd 2017 12 15.10884 01 50 56.943 -15 18 17.37 23.9g 15QX33 W84 C~55Wd 2017 12 22.13164 01 50 39.957 -15 15 04.09 23.1i 15QX33 W84 C~55Wd 2017 12 22.13301 01 50 39.946 -15 15 04.08 23.8g 15QX33 W84 C~55Wd 2018 10 21.26525 02 00 57.561 -14 30 04.91 22.7z 15QX33 W84 C~55Wd 2018 12 03.05923 01 57 30.004 -14 35 01.00 23.2r 15QX33 W84 C~55Wd 2018 12 03.17738 01 57 29.547 -14 34 59.43 23.8g 15QX33 W84 C~55Wd
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 0.14 0.00 -0.10
2 0.6715 13371.97 0.14 -569.70 -0.09
3 0.6824 13188.69 -0.08 -682.04 0.04
4 0.6824 13188.62 -0.08 -682.00 0.13
5 0.6851 13139.68 0.02 -709.15 0.02
6 0.6852 13139.41 -0.18 -709.14 0.07
7 0.6852 13139.74 0.22 -709.15 0.10
8 0.8462 8903.73 -0.21 -1217.59 -0.11
9 0.8844 7855.17 -0.15 -987.18 0.06
10 0.8898 7716.55 -0.17 -944.28 -0.07
11 0.9553 6353.82 0.09 -249.52 -0.00
12 0.9554 6353.72 0.05 -249.46 0.01
13 1.7881 16547.27 -0.07 -935.00 -0.01
14 1.7881 16547.22 -0.01 -935.12 -0.12
15 1.7881 16547.05 -0.06 -934.99 0.01
16 1.7881 16547.08 0.07 -935.07 -0.06
17 1.7881 16546.91 0.01 -934.96 0.05
18 1.7881 16546.92 0.13 -935.07 -0.06
19 1.7935 16391.51 0.07 -940.37 0.03
20 1.7935 16391.48 0.15 -940.32 0.08
21 1.7935 16391.15 -0.07 -940.39 0.01
22 2.9457 18291.00 0.07 368.39 -0.02
23 2.9457 18290.89 0.03 368.40 -0.06
24 2.9951 17589.46 -0.08 1026.32 0.09
25 3.0143 17447.94 0.07 1306.59 -0.00
26 3.0143 17447.80 -0.05 1306.67 0.02
27 3.8443 26800.45 -0.10 -108.63 0.09
28 3.9614 23912.92 -0.06 936.96 -0.07
29 3.9617 23907.54 0.10 941.27 -0.03
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.
15QX33 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 40.825 40.837 40.812 ecceobj 0.098 0.099 0.098 incobj 25.379 25.379 25.379 qmin 36.231 36.183 36.237 qmax 45.193 45.197 45.132 amean 40.584 40.597 40.572 amin 40.267 40.280 40.262 amax 40.921 40.927 40.903 emean 0.090 0.091 0.090 emin 0.077 0.078 0.077 emax 0.105 0.105 0.104 imean 23.647 23.648 23.647 imin 23.139 23.140 23.138 imax 24.232 24.237 24.244 excite_mean 0.411 0.411 0.411 fracstop 1.000 1.000 1.000 cjmean 2.861 2.861 2.861 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 186.2 186.1 186.6 kozaiamp 180.0 180.0 180.0