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: 15VN167 # Created Fri Apr 26 01:17:38 2024 # Orbit generated from Bernstein formalism # Fitting 37 observations of 37 # Arc: 2.35y # First observation: 2015/08/11 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000113 0.033470 -0.000009 -0.001697 0.029960 0.000000 # Chi-squared of fit: 3.79 DOF: 68 RMS: 0.06 # Min/Max residuals: -0.16 0.12 # Exact a, adot, b, bdot, g, gdot: 1.787268E-05 3.267360E-02 -7.716494E-07 -1.661939E-03 2.937794E-02 1.169992E-04 # Covariance matrix: 1.9531E-13 -9.7454E-16 7.2386E-15 -7.4373E-15 1.3594E-13 1.6780E-12 -9.7454E-16 3.0481E-13 1.3373E-14 -2.5944E-14 1.9764E-13 5.8590E-12 7.2386E-15 1.3373E-14 1.0367E-13 -8.1607E-14 1.4866E-14 3.6106E-13 -7.4373E-15 -2.5944E-14 -8.1607E-14 1.0218E-13 -2.2461E-14 -7.6089E-13 1.3594E-13 1.9764E-13 1.4866E-14 -2.2461E-14 2.4767E-13 5.0710E-12 1.6780E-12 5.8590E-12 3.6106E-13 -7.6089E-13 5.0710E-12 1.7185E-10 # lat0 lon0 xBary yBary zBary JD0 -3.123962 50.388269 1.015361 0.001911 0.032764 2457246.085349 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 338.81759 +/- 0.265 Argument of Peri: 250.52351 +/- 0.311 Long of Asc Node: 182.67565 +/- 0.005 Inclination: 4.34104 +/- 0.000 Eccentricity: 0.07263374 +/- 0.0002 Semi-Major Axis: 36.46076571 +/- 0.0020 Time of Perihelion: 2461972.1208 +/- 59.2 Perihelion: 33.81248382 +/- 0.0064 Aphelion: 39.10904760 +/- 0.0065 Period (y) 220.1643 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 22.42778457 +/- 0.0004 Ecliptic Y 25.51146415 +/- 0.0004 Ecliptic Z -1.85500535 +/- 0.0000 Ecliptic XDOT -0.00234630 +/- 0.0000 Ecliptic YDOT 0.00193696 +/- 0.0000 Ecliptic ZDOT -0.00015519 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.01883844 +/- 0.0004 Geocenter to KBO 34.03914133 +/- 0.0006 # Hcoef: 8.26
The following table shows the complete astrometric record for 15VN167. 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 (15VN167) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.58456 03 15 14.042 +14 49 55.22 24.0w 15VN167 568 C~2lVj 2015 09 06.63168 03 15 14.402 +14 47 01.72 15VN167 568 C~2lVj 2015 09 12.52133 03 15 03.831 +14 45 42.45 23.8w 15VN167 568 C~2lVj 2015 10 07.45992 03 13 40.228 +14 37 53.77 23.7w 15VN167 568 C~2lVj 2015 10 08.46335 03 13 35.711 +14 37 31.25 23.7w 15VN167 568 C~2lVj 2015 10 08.52236 03 13 35.435 +14 37 29.97 23.9w 15VN167 568 C~2lVj 2015 11 07.36952 03 10 55.294 +14 25 16.34 23.6r 15VN167 568 C~2lVj 2015 11 07.41164 03 10 55.043 +14 25 15.25 23.5r 15VN167 568 C~2lVj 2015 11 07.45387 03 10 54.791 +14 25 14.20 23.4r 15VN167 568 C~2lVj 2015 11 10.54061 03 10 36.551 +14 23 56.43 23.6w 15VN167 568 C~2lVj 2015 11 17.38710 03 09 56.065 +14 21 07.18 23.6w 15VN167 568 C~2lVj 2015 11 17.43381 03 09 55.788 +14 21 06.03 23.7w 15VN167 568 C~2lVj 2015 12 06.39596 03 08 08.688 +14 14 02.21 23.8w 15VN167 568 C~2lVj 2015 12 13.33048 03 07 33.553 +14 11 52.24 23.7w 15VN167 568 C~2lVj 2015 12 13.38903 03 07 33.268 +14 11 51.18 23.8w 15VN167 568 C~2lVj 2016 01 01.38342 03 06 15.807 +14 07 32.59 23.9w 15VN167 568 C~2lVj 2016 01 02.34977 03 06 12.749 +14 07 23.66 23.9w 15VN167 568 C~2lVj 2016 01 07.33018 03 05 58.477 +14 06 45.23 23.8w 15VN167 568 C~2lVj 2016 02 05.27611 03 05 31.231 +14 07 11.64 23.8w 15VN167 568 C~2lVj 2016 09 07.56785 03 22 53.003 +15 10 26.63 15VN167 568 C~2lVj 2016 09 25.60501 03 22 09.149 +15 05 49.17 23.9w 15VN167 568 C~2lVj 2016 10 10.53987 03 21 09.088 +15 00 44.24 24.0w 15VN167 568 C~2lVj 2016 10 10.58850 03 21 08.860 +15 00 43.19 23.8w 15VN167 568 C~2lVj 2016 11 02.50837 03 19 07.195 +14 51 39.24 15VN167 568 C~2lVj 2016 11 02.54312 03 19 06.991 +14 51 38.37 23.8w 15VN167 568 C~2lVj 2016 11 04.41826 03 18 56.072 +14 50 52.35 23.7w 15VN167 568 C~2lVj 2016 11 04.48449 03 18 55.673 +14 50 50.73 23.7w 15VN167 568 C~2lVj 2016 12 24.31885 03 14 24.708 +14 33 54.03 23.4w 15VN167 568 C~2lVj 2016 12 24.32174 03 14 24.692 +14 33 53.96 24.0w 15VN167 568 C~2lVj 2016 12 29.38526 03 14 05.066 +14 32 54.41 24.0w 15VN167 568 C~2lVj 2017 01 02.39267 03 13 51.231 +14 32 15.39 23.9w 15VN167 568 C~2lVj 2017 01 02.42106 03 13 51.143 +14 32 15.20 23.8w 15VN167 568 C~2lVj 2017 01 02.42405 03 13 51.134 +14 32 15.04 23.9w 15VN167 568 C~2lVj 2017 01 26.30729 03 13 04.746 +14 31 03.29 23.8w 15VN167 568 C~2lVj 2017 01 26.33541 03 13 04.725 +14 31 03.46 23.8w 15VN167 568 C~2lVj 2017 09 21.61548 03 30 08.024 +15 30 03.64 23.7w 15VN167 568 C~2lVj 2017 12 16.34460 03 22 47.885 +14 59 57.72 24.0w 15VN167 568 C~2lVj
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 -0.06 0.00 -0.03
2 0.0713 -40.48 -0.16 -168.79 0.03
3 0.0874 -209.23 -0.01 -205.04 -0.03
4 0.1557 -1502.88 0.09 -337.82 -0.08
5 0.1585 -1572.06 -0.00 -342.23 -0.05
6 0.1586 -1576.26 -0.02 -342.41 0.00
7 0.2403 -4013.43 0.09 -432.29 0.09
8 0.2405 -4017.23 0.10 -432.37 0.05
9 0.2406 -4021.04 0.12 -432.40 0.06
10 0.2490 -4297.29 0.01 -436.57 0.02
11 0.2678 -4909.71 -0.03 -442.23 -0.00
12 0.2679 -4913.90 0.01 -442.26 -0.03
13 0.3198 -6528.55 0.04 -431.87 -0.03
14 0.3388 -7056.13 -0.07 -419.01 0.02
15 0.3390 -7060.41 -0.01 -418.91 -0.03
16 0.3910 -8216.51 -0.09 -362.37 0.05
17 0.3936 -8261.82 -0.04 -358.87 -0.04
18 0.4072 -8472.40 0.05 -339.38 0.01
19 0.4865 -8847.24 -0.04 -205.92 0.02
20 1.0759 6744.59 0.01 -527.51 0.04
21 1.1253 6059.25 -0.04 -634.31 0.08
22 1.1662 5139.55 -0.02 -706.93 0.01
23 1.1663 5136.08 0.02 -707.10 0.04
24 1.2291 3291.41 0.02 -779.46 0.03
25 1.2292 3288.32 0.03 -779.53 0.02
26 1.2343 3123.46 0.06 -783.10 0.01
27 1.2345 3117.45 0.01 -783.17 0.04
28 1.3709 -943.24 -0.03 -739.30 -0.03
29 1.3709 -943.48 -0.09 -739.31 -0.04
30 1.3848 -1234.06 0.11 -721.70 -0.10
31 1.3958 -1438.12 -0.12 -706.37 -0.04
32 1.3959 -1439.40 -0.01 -706.22 0.01
33 1.3959 -1439.57 -0.03 -706.34 -0.13
34 1.4613 -2108.22 0.08 -597.56 -0.07
35 1.4613 -2108.46 0.06 -597.31 0.03
36 2.1137 13147.35 0.01 -962.01 0.08
37 2.3484 6512.90 -0.04 -1117.24 -0.00
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.
15VN167 quality flag:3 Type: 4:3E 4:3E 4:3E axisobj 36.791 36.797 36.785 ecceobj 0.078 0.078 0.078 incobj 4.324 4.324 4.323 qmin 33.382 33.375 33.390 qmax 39.992 39.985 39.945 amean 36.485 36.485 36.485 amin 36.177 36.174 36.186 amax 36.816 36.817 36.803 emean 0.064 0.064 0.064 emin 0.044 0.044 0.045 emax 0.086 0.086 0.085 imean 2.596 2.601 2.617 imin 0.388 0.488 0.321 imax 4.268 4.266 4.268 excite_mean 0.081 0.080 0.081 fracstop 1.000 1.000 1.000 cjmean 3.020 3.020 3.020 libcent 0 180.3 178.2 180.5 libamp 0 49.6 51.7 45.1 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 180.4 180.5 180.4 kozaiamp 180.0 180.0 180.0