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: 15VC173 # Created Sun Apr 27 01:10:44 2025 # Orbit generated from Bernstein formalism # Fitting 41 observations of 41 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000011 0.022806 0.000000 0.000769 0.023684 0.000000 # Chi-squared of fit: 11.72 DOF: 76 RMS: 0.09 # Min/Max residuals: -0.20 0.21 # Exact a, adot, b, bdot, g, gdot: 1.505127E-05 2.298489E-02 7.574927E-07 7.754771E-04 2.389150E-02 7.855410E-04 # Covariance matrix: 2.4237E-13 -2.6092E-13 3.5310E-15 -6.4574E-15 -1.2656E-13 -2.6535E-12 -2.6092E-13 3.9405E-13 -6.2880E-15 1.1621E-14 2.0914E-13 4.7638E-12 3.5310E-15 -6.2880E-15 1.3338E-13 -6.7307E-14 -4.0237E-15 -8.6106E-14 -6.4574E-15 1.1621E-14 -6.7307E-14 4.6811E-14 6.7817E-15 1.5930E-13 -1.2656E-13 2.0914E-13 -4.0237E-15 6.7817E-15 2.2153E-13 2.8405E-12 -2.6535E-12 4.7638E-12 -8.6106E-14 1.5930E-13 2.8405E-12 6.5290E-11 # lat0 lon0 xBary yBary zBary JD0 -1.248225 48.736853 -0.098675 -0.021301 -0.984312 2456978.777218 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 77.24095 +/- 0.076 Argument of Peri: 246.57348 +/- 0.106 Long of Asc Node: 81.10088 +/- 0.007 Inclination: 2.28598 +/- 0.000 Eccentricity: 0.03466202 +/- 0.0003 Semi-Major Axis: 43.11890826 +/- 0.0025 Time of Perihelion: 2434781.1213 +/- 21.8 Perihelion: 41.62431959 +/- 0.0152 Aphelion: 44.61349693 +/- 0.0153 Period (y) 283.1456 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.17019193 +/- 0.0005 Ecliptic Y 32.26176550 +/- 0.0006 Ecliptic Z -0.91176691 +/- 0.0000 Ecliptic XDOT -0.00192356 +/- 0.0000 Ecliptic YDOT 0.00180128 +/- 0.0000 Ecliptic ZDOT 0.00008699 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.83938078 +/- 0.0006 Geocenter to KBO 41.85588146 +/- 0.0008 # Hcoef: 8.49
The following table shows the complete astrometric record for 15VC173. 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 (15VC173) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27644 03 06 32.920 +16 11 50.57 24.0r 15VC173 568 C~2nwG 2014 11 17.38513 03 06 32.378 +16 11 48.50 24.8r 15VC173 568 C~2nwG 2014 11 17.49897 03 06 31.814 +16 11 46.41 24.7r 15VC173 568 C~2nwG 2014 11 19.28749 03 06 23.207 +16 11 12.41 24.6r 15VC173 568 C~2nwG 2014 11 23.39103 03 06 03.616 +16 09 55.38 25.2r 15VC173 568 C~2nwG 2015 08 11.59273 03 16 15.022 +16 54 19.22 25.0w 15VC173 568 C~2nwG 2015 09 06.62350 03 16 11.840 +16 53 33.87 25.3w 15VC173 568 C~2nwG 2015 09 12.51312 03 16 02.559 +16 52 51.32 25.3w 15VC173 568 C~2nwG 2015 10 07.43992 03 14 52.372 +16 47 55.60 25.0w 15VC173 568 C~2nwG 2015 10 07.44703 03 14 52.350 +16 47 55.59 25.1w 15VC173 568 C~2nwG 2015 10 08.45165 03 14 48.607 +16 47 40.44 24.0w 15VC173 568 C~2nwG 2015 11 07.35903 03 12 36.252 +16 38 55.03 24.8r 15VC173 568 C~2nwG 2015 11 07.40112 03 12 36.042 +16 38 54.36 24.6r 15VC173 568 C~2nwG 2015 11 07.44330 03 12 35.836 +16 38 53.43 24.9r 15VC173 568 C~2nwG 2015 11 10.52886 03 12 20.802 +16 37 55.03 25.1w 15VC173 568 C~2nwG 2015 11 17.37547 03 11 47.406 +16 35 45.95 25.0w 15VC173 568 C~2nwG 2015 11 17.42215 03 11 47.180 +16 35 45.02 25.1w 15VC173 568 C~2nwG 2015 12 06.38432 03 10 18.479 +16 30 08.81 25.5w 15VC173 568 C~2nwG 2015 12 13.31874 03 09 49.152 +16 28 20.30 24.9w 15VC173 568 C~2nwG 2015 12 13.37723 03 09 48.904 +16 28 19.45 25.1w 15VC173 568 C~2nwG 2016 01 01.37186 03 08 43.263 +16 24 26.56 25.2w 15VC173 568 C~2nwG 2016 01 07.31862 03 08 28.167 +16 23 36.91 25.2w 15VC173 568 C~2nwG 2016 02 10.28486 03 08 03.476 +16 23 10.15 25.5w 15VC173 568 C~2nwG 2016 09 06.60560 03 21 21.498 +17 16 03.64 24.1w 15VC173 568 C~2nwG 2016 09 26.59656 03 20 38.990 +17 13 03.66 25.0w 15VC173 568 C~2nwG 2016 10 10.40230 03 19 51.842 +17 09 55.83 25.1w 15VC173 568 C~2nwG 2016 10 10.46065 03 19 51.605 +17 09 54.88 25.2w 15VC173 568 C~2nwG 2016 11 02.52573 03 18 10.256 +17 03 24.12 24.3w 15VC173 568 C~2nwG 2016 11 04.40084 03 18 01.279 +17 02 49.80 24.7w 15VC173 568 C~2nwG 2016 12 24.29598 03 14 17.398 +16 49 09.87 25.0w 15VC173 568 C~2nwG 2016 12 24.31334 03 14 17.333 +16 49 09.58 25.4w 15VC173 568 C~2nwG 2017 01 02.39822 03 13 49.191 +16 47 35.00 25.0w 15VC173 568 C~2nwG 2017 01 02.41556 03 13 49.131 +16 47 34.93 25.4w 15VC173 568 C~2nwG 2017 01 26.32220 03 13 08.299 +16 45 42.09 25.6w 15VC173 568 C~2nwG 2017 01 26.32908 03 13 08.296 +16 45 42.05 25.1w 15VC173 568 C~2nwG 2017 09 17.60038 03 26 14.887 +17 36 49.15 15VC173 568 C~2nwG 2017 09 23.57901 03 26 00.832 +17 35 52.50 15VC173 568 C~2nwG 2017 09 23.58734 03 26 00.789 +17 35 52.21 24.9w 15VC173 568 C~2nwG 2017 09 24.59522 03 25 58.150 +17 35 41.81 25.4w 15VC173 568 C~2nwG 2017 12 16.36856 03 20 00.680 +17 13 49.12 24.7w 15VC173 568 C~2nwG 2017 12 16.39181 03 20 00.587 +17 13 48.79 24.9w 15VC173 568 C~2nwG
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 0.03 0.00 -0.05
2 0.0003 -8.08 -0.09 0.14 -0.03
3 0.0006 -16.46 -0.12 0.35 0.08
4 0.0055 -145.02 -0.12 1.53 0.09
5 0.0167 -437.56 0.11 4.65 -0.07
6 0.7319 8751.61 -0.02 217.71 -0.09
7 0.8031 8695.57 0.09 185.86 -0.14
8 0.8193 8555.62 -0.09 179.65 0.11
9 0.8875 7504.07 -0.15 158.82 -0.12
10 0.8875 7503.76 -0.06 158.89 -0.04
11 0.8903 7447.85 -0.00 158.43 0.03
12 0.9722 5473.27 0.21 154.94 0.06
13 0.9723 5470.18 0.21 155.10 0.19
14 0.9724 5467.08 0.21 154.99 0.05
15 0.9808 5243.11 -0.01 156.20 0.07
16 0.9996 4745.75 -0.15 159.78 0.02
17 0.9997 4742.37 -0.10 159.75 -0.05
18 1.0516 3423.00 0.14 177.45 0.02
19 1.0706 2987.44 0.09 186.42 -0.03
20 1.0708 2983.77 0.02 186.56 0.02
21 1.1228 2011.46 -0.09 217.27 -0.01
22 1.1391 1788.88 -0.02 228.29 -0.10
23 1.2321 1439.60 0.18 298.88 0.07
24 1.8051 13347.00 -0.14 342.66 -0.02
25 1.8599 12709.72 0.11 324.29 -0.03
26 1.8977 12006.00 0.11 316.07 -0.01
27 1.8978 12002.46 -0.01 316.03 -0.06
28 1.9610 10493.41 -0.20 313.53 0.14
29 1.9661 10359.84 0.03 313.76 -0.04
30 2.1027 7038.64 0.01 362.95 0.01
31 2.1028 7037.66 -0.07 362.92 -0.06
32 2.1276 6622.48 -0.01 378.47 -0.09
33 2.1277 6621.63 -0.14 378.63 0.04
34 2.1931 6025.72 -0.02 425.18 0.02
35 2.1932 6025.67 -0.01 425.15 -0.02
36 2.8346 17748.95 0.04 490.02 -0.01
37 2.8509 17538.69 0.15 485.19 0.01
38 2.8510 17538.02 -0.19 485.06 -0.12
39 2.8537 17498.60 0.11 484.39 -0.03
40 3.0803 12188.99 -0.03 509.32 0.10
41 3.0804 12187.61 0.00 509.35 0.08
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.
15VC173 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.451 43.459 43.443 ecceobj 0.041 0.041 0.041 incobj 2.284 2.285 2.284 qmin 40.603 40.567 40.623 qmax 45.823 45.871 45.810 amean 43.126 43.133 43.118 amin 42.794 42.796 42.787 amax 43.470 43.475 43.461 emean 0.038 0.039 0.038 emin 0.016 0.016 0.015 emax 0.055 0.055 0.054 imean 0.909 0.909 0.910 imin 0.470 0.452 0.470 imax 1.324 1.358 1.342 excite_mean 0.042 0.043 0.042 fracstop 1.000 1.000 1.000 cjmean 3.089 3.089 3.089 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 181.1 183.0 181.4 kozaiamp 180.0 180.0 180.0