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: 15VO172 # Created Mon Apr 28 01:10:43 2025 # Orbit generated from Bernstein formalism # Fitting 42 observations of 42 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000164 0.021669 -0.000018 -0.003286 0.023326 0.000000 # Chi-squared of fit: 9.98 DOF: 78 RMS: 0.09 # Min/Max residuals: -0.25 0.25 # Exact a, adot, b, bdot, g, gdot: 1.507843E-05 2.199645E-02 -1.930838E-06 -3.333139E-03 2.352781E-02 2.725530E-03 # Covariance matrix: 2.8187E-13 -2.9650E-13 -1.6514E-14 3.0944E-14 -1.3509E-13 -3.0771E-12 -2.9650E-13 4.3111E-13 2.8950E-14 -5.4259E-14 2.4238E-13 5.3946E-12 -1.6514E-14 2.8950E-14 1.6028E-13 -8.4180E-14 1.9638E-14 4.1410E-13 3.0944E-14 -5.4259E-14 -8.4180E-14 6.0087E-14 -3.7046E-14 -7.7652E-13 -1.3509E-13 2.4238E-13 1.9638E-14 -3.7046E-14 2.8299E-13 3.6648E-12 -3.0771E-12 5.3946E-12 4.1410E-13 -7.7652E-13 3.6648E-12 7.7175E-11 # lat0 lon0 xBary yBary zBary JD0 -0.342513 48.501599 -0.104706 -0.005725 -0.983888 2456978.890988 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 83.46024 +/- 0.048 Argument of Peri: 84.80254 +/- 0.033 Long of Asc Node: 226.43531 +/- 0.000 Inclination: 8.62456 +/- 0.001 Eccentricity: 0.12155134 +/- 0.0004 Semi-Major Axis: 43.44419766 +/- 0.0043 Time of Perihelion: 2432722.6497 +/- 13.4 Perihelion: 38.16349729 +/- 0.0170 Aphelion: 48.72489804 +/- 0.0173 Period (y) 286.3557 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.73225887 +/- 0.0006 Ecliptic Y 32.64081294 +/- 0.0007 Ecliptic Z -0.25418623 +/- 0.0000 Ecliptic XDOT -0.00171278 +/- 0.0000 Ecliptic YDOT 0.00192686 +/- 0.0000 Ecliptic ZDOT -0.00038965 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.48597452 +/- 0.0007 Geocenter to KBO 42.50290148 +/- 0.0010 # Hcoef: 8.39
The following table shows the complete astrometric record for 15VO172. 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 (15VO172) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.39021 03 04 34.030 +17 00 13.62 24.6r 15VO172 568 C~2nwD 2014 11 17.50402 03 04 33.476 +17 00 11.28 24.6r 15VO172 568 C~2nwD 2014 11 19.29385 03 04 25.023 +16 59 32.85 24.4r 15VO172 568 C~2nwD 2014 11 23.39737 03 04 05.759 +16 58 06.07 24.6r 15VO172 568 C~2nwD 2015 09 12.50905 03 14 03.541 +17 28 56.07 25.2w 15VO172 568 C~2nwD 2015 10 07.43408 03 12 53.889 +17 23 21.40 24.8w 15VO172 568 C~2nwD 2015 10 08.44583 03 12 50.145 +17 23 04.17 24.8w 15VO172 568 C~2nwD 2015 10 08.50488 03 12 49.924 +17 23 03.21 24.4w 15VO172 568 C~2nwD 2015 11 07.35377 03 10 39.722 +17 13 21.95 24.8r 15VO172 568 C~2nwD 2015 11 07.39585 03 10 39.525 +17 13 21.06 24.9r 15VO172 568 C~2nwD 2015 11 07.43803 03 10 39.311 +17 13 20.20 24.8r 15VO172 568 C~2nwD 2015 11 10.52298 03 10 24.562 +17 12 15.31 25.5w 15VO172 568 C~2nwD 2015 11 17.36965 03 09 51.797 +17 09 51.30 25.1w 15VO172 568 C~2nwD 2015 11 17.41626 03 09 51.564 +17 09 50.38 24.9w 15VO172 568 C~2nwD 2015 12 06.37850 03 08 24.737 +17 03 28.67 25.0w 15VO172 568 C~2nwD 2015 12 13.31287 03 07 56.129 +17 01 22.48 25.0w 15VO172 568 C~2nwD 2015 12 13.37141 03 07 55.898 +17 01 21.54 24.8w 15VO172 568 C~2nwD 2016 01 01.36607 03 06 52.156 +16 56 36.74 25.0w 15VO172 568 C~2nwD 2016 01 07.31283 03 06 37.611 +16 55 30.20 25.1w 15VO172 568 C~2nwD 2016 02 04.28927 03 06 11.331 +16 53 11.58 24.8w 15VO172 568 C~2nwD 2016 02 10.27908 03 06 15.334 +16 53 21.37 24.9w 15VO172 568 C~2nwD 2016 09 06.61138 03 19 22.716 +17 38 02.98 25.3w 15VO172 568 C~2nwD 2016 09 26.59656 03 18 40.387 +17 34 27.33 25.1w 15VO172 568 C~2nwD 2016 10 10.46065 03 17 53.587 +17 30 52.87 24.9w 15VO172 568 C~2nwD 2016 10 10.46643 03 17 53.562 +17 30 52.76 25.0w 15VO172 568 C~2nwD 2016 10 27.49100 03 16 41.868 +17 25 37.12 24.8w 15VO172 568 C~2nwD 2016 10 27.50259 03 16 41.820 +17 25 37.11 24.9w 15VO172 568 C~2nwD 2016 11 02.59707 03 16 13.612 +17 23 35.21 24.9w 15VO172 568 C~2nwD 2016 11 02.60863 03 16 13.541 +17 23 34.69 25.3w 15VO172 568 C~2nwD 2016 11 03.51606 03 16 09.293 +17 23 16.43 25.0w 15VO172 568 C~2nwD 2016 11 03.52763 03 16 09.237 +17 23 16.10 25.1w 15VO172 568 C~2nwD 2016 12 24.29598 03 12 26.682 +17 07 24.24 24.9w 15VO172 568 C~2nwD 2016 12 29.37514 03 12 10.710 +17 06 15.53 25.9w 15VO172 568 C~2nwD 2017 01 02.38235 03 11 59.467 +17 05 26.79 24.6w 15VO172 568 C~2nwD 2017 01 26.28489 03 11 20.627 +17 02 31.03 25.1w 15VO172 568 C~2nwD 2017 01 26.32220 03 11 20.598 +17 02 31.02 25.2w 15VO172 568 C~2nwD 2017 09 16.61554 03 24 16.401 +17 44 23.78 24.9w 15VO172 568 C~2nwD 2017 09 23.55460 03 24 00.496 +17 43 04.71 24.8w 15VO172 568 C~2nwD 2017 09 23.57901 03 24 00.444 +17 43 04.18 25.0w 15VO172 568 C~2nwD 2017 09 23.58734 03 24 00.413 +17 43 04.17 24.9w 15VO172 568 C~2nwD 2017 09 24.59522 03 23 57.782 +17 42 51.45 25.4w 15VO172 568 C~2nwD 2017 12 16.39181 03 18 08.044 +17 18 03.65 24.9w 15VO172 568 C~2nwD
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 -0.06
2 0.0003 -8.28 -0.09 -0.06 0.06
3 0.0052 -135.44 0.01 -3.57 -0.15
4 0.0164 -425.02 -0.05 -10.70 -0.02
5 0.8189 8325.38 -0.11 -542.39 -0.03
6 0.8872 7274.08 0.19 -601.45 0.10
7 0.8900 7217.76 -0.05 -603.84 -0.00
8 0.8901 7214.45 0.01 -603.93 0.02
9 0.9718 5260.52 0.05 -666.74 -0.06
10 0.9720 5257.56 0.14 -666.84 -0.10
11 0.9721 5254.37 0.02 -666.84 -0.04
12 0.9805 5033.25 0.04 -672.66 -0.04
13 0.9993 4542.02 0.06 -685.17 -0.01
14 0.9994 4538.55 -0.02 -685.16 0.07
15 1.0513 3236.49 0.01 -716.59 -0.06
16 1.0703 2807.27 0.03 -726.78 0.01
17 1.0704 2803.83 0.13 -726.78 0.07
18 1.1225 1846.27 -0.08 -751.96 0.05
19 1.1387 1627.30 -0.02 -759.01 0.11
20 1.2153 1226.59 -0.08 -789.24 0.16
21 1.2317 1284.53 0.15 -795.54 -0.01
22 1.8048 12887.19 0.02 -1204.54 -0.11
23 1.8596 12244.49 -0.04 -1257.05 -0.02
24 1.8975 11540.11 -0.05 -1291.14 0.00
25 1.8975 11539.74 -0.09 -1291.15 0.00
26 1.9442 10464.09 -0.05 -1329.37 -0.09
27 1.9442 10463.42 0.08 -1329.20 0.10
28 1.9609 10040.82 0.05 -1341.53 0.25
29 1.9609 10039.70 -0.25 -1341.76 0.04
30 1.9634 9976.08 -0.01 -1343.50 0.11
31 1.9634 9975.22 -0.04 -1343.61 0.02
32 2.1024 6643.47 0.03 -1421.16 -0.13
33 2.1163 6404.23 -0.00 -1426.45 -0.03
34 2.1273 6235.71 -0.03 -1430.48 -0.02
35 2.1927 5651.56 0.03 -1451.18 -0.01
36 2.1928 5651.16 -0.03 -1451.08 0.12
37 2.8316 17065.69 0.02 -1905.12 0.04
38 2.8506 16824.25 -0.00 -1924.59 0.05
39 2.8506 16823.40 0.12 -1924.92 -0.22
40 2.8506 16822.96 0.02 -1924.82 -0.10
41 2.8534 16783.12 0.00 -1927.68 -0.18
42 3.0801 11541.02 -0.06 -2089.00 0.14
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.
15VO172 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.802 43.816 43.789 ecceobj 0.126 0.127 0.125 incobj 8.596 8.596 8.596 qmin 37.147 37.163 37.144 qmax 50.101 50.137 50.066 amean 43.484 43.498 43.471 amin 43.121 43.145 43.113 amax 43.883 43.890 43.864 emean 0.124 0.125 0.123 emin 0.105 0.107 0.106 emax 0.143 0.144 0.142 imean 10.353 10.367 10.344 imin 9.459 9.459 9.458 imax 11.216 11.237 11.193 excite_mean 0.219 0.219 0.218 fracstop 1.000 1.000 1.000 cjmean 3.038 3.038 3.038 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 178.1 178.0 177.8 kozaiamp 180.0 180.0 180.0