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: 15VD173 # Created Mon Apr 28 01:10:44 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: -0.000029 0.025039 -0.000003 0.000640 0.024710 0.000000 # Chi-squared of fit: 12.60 DOF: 78 RMS: 0.10 # Min/Max residuals: -0.24 0.28 # Exact a, adot, b, bdot, g, gdot: 1.560231E-05 2.514559E-02 3.860729E-07 6.432157E-04 2.483796E-02 -4.136301E-04 # Covariance matrix: 2.8952E-13 -3.1829E-13 3.8424E-15 -6.2876E-15 -1.4559E-13 -2.9932E-12 -3.1829E-13 4.6705E-13 -6.5732E-15 1.0767E-14 2.4782E-13 5.1247E-12 3.8424E-15 -6.5732E-15 1.4724E-13 -7.4673E-14 -4.2687E-15 -8.0738E-14 -6.2876E-15 1.0767E-14 -7.4673E-14 4.9930E-14 6.2828E-15 1.3219E-13 -1.4559E-13 2.4782E-13 -4.2687E-15 6.2828E-15 2.4276E-13 3.0513E-12 -2.9932E-12 5.1247E-12 -8.0738E-14 1.3219E-13 3.0513E-12 6.2921E-11 # lat0 lon0 xBary yBary zBary JD0 -1.311513 48.595550 -0.101103 -0.022383 -0.984042 2456978.777218 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 348.17831 +/- 0.220 Argument of Peri: 332.59105 +/- 0.257 Long of Asc Node: 89.82171 +/- 0.009 Inclination: 1.94781 +/- 0.000 Eccentricity: 0.07363429 +/- 0.0001 Semi-Major Axis: 44.43585442 +/- 0.0028 Time of Perihelion: 2460523.3419 +/- 66.1 Perihelion: 41.16385162 +/- 0.0047 Aphelion: 47.70785721 +/- 0.0049 Period (y) 296.2160 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.19244593 +/- 0.0005 Ecliptic Y 30.99686156 +/- 0.0006 Ecliptic Z -0.92149974 +/- 0.0000 Ecliptic XDOT -0.00211233 +/- 0.0000 Ecliptic YDOT 0.00179522 +/- 0.0000 Ecliptic ZDOT 0.00007203 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.24419601 +/- 0.0006 Geocenter to KBO 40.26096236 +/- 0.0008 # Hcoef: 8.74
The following table shows the complete astrometric record for 15VD173. 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 (15VD173) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27644 03 06 03.294 +16 05 52.33 24.5r 15VD173 568 C~2nwG 2014 11 17.38513 03 06 02.731 +16 05 50.25 25.8r 15VD173 568 C~2nwG 2014 11 17.49897 03 06 02.162 +16 05 47.89 24.4r 15VD173 568 C~2nwG 2014 11 19.28749 03 05 53.312 +16 05 12.74 25.0r 15VD173 568 C~2nwG 2015 08 11.59273 03 16 21.618 +16 50 38.85 24.5w 15VD173 568 C~2nwG 2015 09 12.51312 03 16 10.357 +16 49 07.85 25.7w 15VD173 568 C~2nwG 2015 10 07.43992 03 14 58.659 +16 44 01.35 24.8w 15VD173 568 C~2nwG 2015 10 07.44703 03 14 58.653 +16 44 01.50 25.1w 15VD173 568 C~2nwG 2015 10 08.45165 03 14 54.796 +16 43 45.53 25.3w 15VD173 568 C~2nwG 2015 11 07.35903 03 12 38.633 +16 34 41.08 24.6r 15VD173 568 C~2nwG 2015 11 07.40112 03 12 38.419 +16 34 40.10 25.1r 15VD173 568 C~2nwG 2015 11 07.44330 03 12 38.211 +16 34 39.45 24.4r 15VD173 568 C~2nwG 2015 11 10.52886 03 12 22.721 +16 33 38.74 25.0w 15VD173 568 C~2nwG 2015 11 17.37547 03 11 48.320 +16 31 25.32 25.0w 15VD173 568 C~2nwG 2015 11 17.42215 03 11 48.085 +16 31 24.49 25.1w 15VD173 568 C~2nwG 2015 12 06.38432 03 10 16.735 +16 25 36.66 24.8w 15VD173 568 C~2nwG 2015 12 13.31874 03 09 46.563 +16 23 45.13 25.0w 15VD173 568 C~2nwG 2015 12 13.37723 03 09 46.338 +16 23 44.04 25.1w 15VD173 568 C~2nwG 2016 01 01.37186 03 08 38.997 +16 19 45.25 25.1w 15VD173 568 C~2nwG 2016 01 07.31862 03 08 23.580 +16 18 54.93 25.5w 15VD173 568 C~2nwG 2016 02 04.29505 03 07 55.500 +16 18 03.52 25.7w 15VD173 568 C~2nwG 2016 02 04.30157 03 07 55.498 +16 18 03.69 25.6w 15VD173 568 C~2nwG 2016 02 10.28486 03 07 59.597 +16 18 34.24 25.6w 15VD173 568 C~2nwG 2016 09 07.62568 03 21 59.173 +17 13 45.76 25.1w 15VD173 568 C~2nwG 2016 10 10.40230 03 20 29.276 +17 07 32.16 24.9w 15VD173 568 C~2nwG 2016 10 10.46065 03 20 29.046 +17 07 31.25 24.9w 15VD173 568 C~2nwG 2016 11 02.51995 03 18 44.825 +17 00 47.18 25.2w 15VD173 568 C~2nwG 2016 11 02.52573 03 18 44.795 +17 00 46.95 24.9w 15VD173 568 C~2nwG 2016 11 04.39506 03 18 35.550 +17 00 11.73 24.9w 15VD173 568 C~2nwG 2016 11 04.40084 03 18 35.523 +17 00 11.61 25.1w 15VD173 568 C~2nwG 2016 12 24.29598 03 14 44.632 +16 46 05.80 15VD173 568 C~2nwG 2016 12 24.31334 03 14 44.569 +16 46 05.56 25.1w 15VD173 568 C~2nwG 2017 01 02.39822 03 14 15.634 +16 44 28.50 24.9w 15VD173 568 C~2nwG 2017 01 02.41556 03 14 15.573 +16 44 28.61 25.1w 15VD173 568 C~2nwG 2017 01 26.32220 03 13 34.007 +16 42 35.58 24.6w 15VD173 568 C~2nwG 2017 01 26.32908 03 13 33.993 +16 42 35.60 24.5w 15VD173 568 C~2nwG 2017 09 15.58250 03 27 30.089 +17 36 19.94 25.1w 15VD173 568 C~2nwG 2017 09 17.60038 03 27 25.995 +17 36 02.64 25.4w 15VD173 568 C~2nwG 2017 09 22.56874 03 27 14.410 +17 35 15.03 25.5w 15VD173 568 C~2nwG 2017 09 24.59522 03 27 09.078 +17 34 53.54 25.1w 15VD173 568 C~2nwG 2017 12 16.36856 03 21 00.885 +17 12 20.36 25.3w 15VD173 568 C~2nwG 2017 12 16.39181 03 21 00.788 +17 12 19.74 24.9w 15VD173 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 0.08 0.00 0.00
2 0.0003 -8.37 -0.10 0.22 0.11
3 0.0006 -16.91 -0.03 0.20 -0.01
4 0.0055 -149.21 0.00 1.33 0.04
5 0.7319 9294.97 0.02 207.39 -0.11
6 0.8193 9114.76 -0.01 161.81 -0.02
7 0.8875 8038.85 -0.24 136.30 -0.02
8 0.8875 8038.81 0.13 136.47 0.14
9 0.8903 7981.07 -0.10 135.65 0.03
10 0.9722 5947.64 0.19 128.47 0.12
11 0.9723 5944.41 0.15 128.34 -0.03
12 0.9724 5941.36 0.28 128.51 0.11
13 0.9808 5710.34 -0.05 129.27 -0.10
14 0.9996 5197.66 -0.11 132.60 0.01
15 0.9997 5194.18 -0.05 132.70 0.07
16 1.0516 3834.38 -0.06 149.66 -0.24
17 1.0706 3386.11 -0.13 159.09 0.04
18 1.0708 3382.69 0.15 158.91 -0.24
19 1.1228 2384.82 -0.06 190.79 -0.09
20 1.1391 2157.52 -0.14 202.48 0.03
21 1.2157 1754.45 0.15 262.69 -0.09
22 1.2157 1754.47 0.13 262.86 0.07
23 1.2321 1819.57 -0.11 276.24 0.07
24 1.8079 14346.81 -0.01 298.30 -0.01
25 1.8977 12999.90 -0.02 266.15 0.02
26 1.8978 12996.47 0.06 266.12 -0.01
27 1.9610 11442.92 0.01 260.47 0.06
28 1.9610 11442.45 -0.04 260.36 -0.05
29 1.9661 11304.82 -0.06 260.64 -0.01
30 1.9661 11304.42 -0.03 260.62 -0.03
31 2.1027 7877.02 -0.01 309.54 0.07
32 2.1028 7876.09 -0.02 309.55 0.04
33 2.1276 7449.02 -0.00 325.55 -0.23
34 2.1277 7448.20 -0.08 325.89 0.08
35 2.1931 6841.73 0.13 374.82 0.01
36 2.1932 6841.54 0.00 374.90 0.07
37 2.8290 19304.24 0.07 420.56 0.05
38 2.8346 19242.72 -0.04 418.28 -0.01
39 2.8482 19068.95 -0.01 413.17 0.05
40 2.8537 18989.09 0.03 411.24 0.09
41 3.0803 13513.75 0.00 429.08 0.09
42 3.0804 13512.24 -0.04 428.84 -0.19
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.
15VD173 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.787 44.795 44.779 ecceobj 0.079 0.080 0.079 incobj 1.948 1.948 1.948 qmin 40.059 40.068 40.045 qmax 49.044 49.040 48.997 amean 44.419 44.429 44.411 amin 44.056 44.067 44.058 amax 44.797 44.809 44.789 emean 0.079 0.079 0.079 emin 0.063 0.063 0.064 emax 0.095 0.095 0.094 imean 0.661 0.658 0.663 imin 0.236 0.229 0.241 imax 1.038 1.033 1.040 excite_mean 0.080 0.080 0.080 fracstop 1.000 1.000 1.000 cjmean 3.099 3.099 3.099 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 176.7 176.8 176.3 kozaiamp 180.0 180.0 180.0