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: 15VM168 # Created Tue Apr 1 01:10:39 2025 # Orbit generated from Bernstein formalism # Fitting 32 observations of 32 # Arc: 3.07y # First observation: 2014/11/19 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000130 0.032288 0.000019 -0.007792 0.027172 0.000000 # Chi-squared of fit: 9.81 DOF: 58 RMS: 0.10 # Min/Max residuals: -0.19 0.26 # Exact a, adot, b, bdot, g, gdot: 1.847020E-05 3.237298E-02 -4.866642E-06 -7.822253E-03 2.735373E-02 -1.616965E-04 # Covariance matrix: 8.9345E-13 -1.0665E-12 -1.3481E-13 2.1017E-13 -3.8231E-13 -8.4762E-12 -1.0665E-12 1.4310E-12 1.9517E-13 -3.0379E-13 5.2072E-13 1.2256E-11 -1.3481E-13 1.9517E-13 2.8370E-13 -1.9516E-13 7.4687E-14 1.8097E-12 2.1017E-13 -3.0379E-13 -1.9516E-13 1.7819E-13 -1.1806E-13 -2.8159E-12 -3.8231E-13 5.2072E-13 7.4687E-14 -1.1806E-13 3.2497E-13 4.7500E-12 -8.4762E-12 1.2256E-11 1.8097E-12 -2.8159E-12 4.7500E-12 1.1361E-10 # lat0 lon0 xBary yBary zBary JD0 -1.967889 48.221614 -0.142178 -0.033458 -0.978130 2456980.788268 # Heliocentric elements and errors Epoch: 2456980.5000 = 2014/11/19 Mean Anomaly: 359.75374 +/- 0.024 Argument of Peri: 188.75607 +/- 0.063 Long of Asc Node: 220.55894 +/- 0.000 Inclination: 13.71066 +/- 0.001 Eccentricity: 0.40951784 +/- 0.0001 Semi-Major Axis: 63.56643214 +/- 0.0073 Time of Perihelion: 2457107.1264 +/- 12.4 Perihelion: 37.53484426 +/- 0.0059 Aphelion: 89.59802003 +/- 0.0111 Period (y) 506.8156 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.88536443 +/- 0.0005 Ecliptic Y 28.07237482 +/- 0.0006 Ecliptic Z -1.25557711 +/- 0.0000 Ecliptic XDOT -0.00244928 +/- 0.0000 Ecliptic YDOT 0.00212172 +/- 0.0000 Ecliptic ZDOT -0.00078181 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.53553069 +/- 0.0005 Geocenter to KBO 36.55808236 +/- 0.0008 # Hcoef: 9.57
The following table shows the complete astrometric record for 15VM168. 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 (15VM168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 19.28749 03 05 18.567 +15 21 50.89 24.9r 15VM168 568 C~2lVm 2015 08 11.56405 03 17 55.455 +15 55 55.15 25.1w 15VM168 568 C~2lVm 2015 09 06.61072 03 18 01.203 +15 52 44.61 25.8w 15VM168 568 C~2lVm 2015 09 12.50083 03 17 52.770 +15 51 25.06 26.7w 15VM168 568 C~2lVm 2015 10 07.42237 03 16 41.683 +15 43 42.14 25.4w 15VM168 568 C~2lVm 2015 10 08.49327 03 16 37.502 +15 43 18.53 25.4w 15VM168 568 C~2lVm 2015 11 07.34843 03 14 16.858 +15 31 08.92 25.1r 15VM168 568 C~2lVm 2015 11 07.39058 03 14 16.638 +15 31 07.83 25.3r 15VM168 568 C~2lVm 2015 11 07.43274 03 14 16.419 +15 31 06.76 25.0r 15VM168 568 C~2lVm 2015 11 10.51713 03 14 00.295 +15 29 48.27 25.2w 15VM168 568 C~2lVm 2015 11 10.54648 03 14 00.144 +15 29 47.91 25.8w 15VM168 568 C~2lVm 2015 11 17.36382 03 13 24.403 +15 26 55.92 25.5w 15VM168 568 C~2lVm 2015 11 17.41043 03 13 24.164 +15 26 54.64 24.9w 15VM168 568 C~2lVm 2015 12 06.37266 03 11 48.875 +15 19 29.39 25.7w 15VM168 568 C~2lVm 2015 12 13.30706 03 11 17.521 +15 17 06.17 25.4w 15VM168 568 C~2lVm 2015 12 13.36559 03 11 17.266 +15 17 05.02 25.4w 15VM168 568 C~2lVm 2016 01 01.36029 03 10 08.024 +15 11 53.86 25.5w 15VM168 568 C~2lVm 2016 01 07.30705 03 09 52.510 +15 10 44.98 25.3w 15VM168 568 C~2lVm 2016 02 04.34036 03 09 27.990 +15 08 52.53 26.0w 15VM168 568 C~2lVm 2016 02 11.22942 03 09 35.011 +15 09 19.27 25.8w 15VM168 568 C~2lVm 2016 09 07.56785 03 25 46.870 +15 54 47.61 25.6w 15VM168 568 C~2lVm 2016 09 27.50655 03 25 05.099 +15 49 25.63 25.8w 15VM168 568 C~2lVm 2016 10 10.44325 03 24 19.427 +15 44 56.88 25.4w 15VM168 568 C~2lVn 2016 10 10.50202 03 24 19.177 +15 44 55.62 25.6w 15VM168 568 C~2lVn 2016 10 10.51973 03 24 19.097 +15 44 55.27 25.2w 15VM168 568 C~2lVn 2016 11 02.51417 03 22 32.335 +15 35 47.74 25.5w 15VM168 568 C~2lVn 2016 11 04.38927 03 22 22.717 +15 35 01.30 25.1w 15VM168 568 C~2lVn 2016 12 24.33677 03 18 21.671 +15 17 03.70 25.9w 15VM168 568 C~2lVn 2016 12 28.44224 03 18 07.287 +15 16 04.11 25.5w 15VM168 568 C~2lVn 2017 01 26.34976 03 17 10.414 +15 12 19.80 25.9w 15VM168 568 C~2lVn 2017 09 23.53642 03 33 06.444 +15 52 09.96 25.9w 15VM168 568 C~2lVn 2017 12 13.36708 03 26 58.917 +15 22 33.53 25.3w 15VM168 568 C~2lVn
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 0.05 0.00 0.07
2 0.7263 11091.32 -0.06 -958.36 -0.16
3 0.7976 11121.86 -0.00 -1164.23 0.01
4 0.8137 10983.27 -0.05 -1209.38 0.21
5 0.8820 9869.07 -0.06 -1388.15 -0.05
6 0.8849 9804.47 0.01 -1395.11 -0.01
7 0.9666 7648.39 -0.10 -1563.51 -0.12
8 0.9667 7645.03 -0.06 -1563.72 -0.16
9 0.9669 7641.69 0.00 -1563.91 -0.17
10 0.9753 7395.84 -0.01 -1577.82 -0.16
11 0.9754 7393.63 0.16 -1577.59 0.20
12 0.9940 6849.17 -0.04 -1606.19 0.04
13 0.9942 6845.49 0.06 -1606.51 -0.11
14 1.0461 5397.24 0.06 -1667.94 0.03
15 1.0651 4921.51 -0.06 -1684.35 0.01
16 1.0652 4917.64 -0.01 -1684.47 -0.00
17 1.1172 3868.28 0.01 -1714.67 0.01
18 1.1335 3633.35 -0.10 -1720.42 0.01
19 1.2103 3261.07 0.26 -1732.81 0.26
20 1.2291 3366.20 -0.19 -1734.54 0.03
21 1.8023 17680.53 0.07 -2771.65 -0.02
22 1.8569 17011.48 -0.13 -2931.56 0.04
23 1.8923 16301.08 0.20 -3024.75 -0.06
24 1.8924 16297.24 0.09 -3025.05 0.01
25 1.8925 16296.03 0.00 -3025.10 0.08
26 1.9554 14656.28 0.02 -3161.80 -0.03
27 1.9606 14509.32 0.00 -3171.13 -0.02
28 2.0973 10849.75 0.02 -3311.53 0.10
29 2.1086 10632.66 -0.06 -3314.76 0.15
30 2.1877 9777.34 -0.01 -3315.99 -0.05
31 2.8453 23850.76 -0.08 -4508.34 -0.09
32 3.0666 18207.94 -0.00 -4914.33 -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.
15VM168 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 64.406 64.436 64.377 ecceobj 0.417 0.417 0.417 incobj 13.670 13.670 13.670 qmin 36.357 36.374 36.351 qmax 92.101 92.097 91.881 amean 63.457 63.464 63.431 amin 62.628 62.626 62.540 amax 64.534 64.560 64.535 emean 0.413 0.413 0.412 emin 0.399 0.399 0.397 emax 0.427 0.427 0.426 imean 14.102 14.069 14.072 imin 13.509 13.517 13.538 imax 14.942 14.864 14.836 excite_mean 0.479 0.479 0.478 fracstop 1.000 1.000 1.000 cjmean 3.039 3.040 3.040 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 182.0 180.7 179.5 kozaiamp 180.0 180.0 179.9