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: 15VH173 # Created Tue Apr 1 01:10:43 2025 # Orbit generated from Bernstein formalism # Fitting 37 observations of 37 # Arc: 2.85y # First observation: 2014/11/17 # Last observation: 2017/09/23 Preliminary a, adot, b, bdot, g, gdot: -0.000020 0.026430 -0.000003 -0.000391 0.025549 0.000000 # Chi-squared of fit: 7.35 DOF: 68 RMS: 0.08 # Min/Max residuals: -0.36 0.22 # Exact a, adot, b, bdot, g, gdot: 1.639322E-05 2.660737E-02 -4.176807E-07 -3.931638E-04 2.565244E-02 2.485318E-04 # Covariance matrix: 2.9817E-13 -3.4447E-13 -6.9026E-16 2.7955E-15 -1.3520E-13 -3.1384E-12 -3.4447E-13 5.3732E-13 1.2293E-15 -5.3088E-15 2.6476E-13 5.9164E-12 -6.9026E-16 1.2293E-15 1.6951E-13 -1.0254E-13 -5.9841E-18 1.5794E-14 2.7955E-15 -5.3088E-15 -1.0254E-13 8.1456E-14 -3.4937E-15 -6.8979E-14 -1.3520E-13 2.6476E-13 -5.9841E-18 -3.4937E-15 2.5437E-13 3.4577E-12 -3.1384E-12 5.9164E-12 1.5794E-14 -6.8979E-14 3.4577E-12 7.6778E-11 # lat0 lon0 xBary yBary zBary JD0 -2.103481 47.357836 -0.122517 -0.035892 -0.981204 2456978.787348 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 5.86934 +/- 0.188 Argument of Peri: 240.57972 +/- 0.227 Long of Asc Node: 159.88723 +/- 0.015 Inclination: 2.21838 +/- 0.000 Eccentricity: 0.08978317 +/- 0.0001 Semi-Major Axis: 43.87735859 +/- 0.0027 Time of Perihelion: 2455239.7040 +/- 55.5 Perihelion: 39.93791047 +/- 0.0038 Aphelion: 47.81680672 +/- 0.0041 Period (y) 290.6491 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.96161337 +/- 0.0005 Ecliptic Y 29.46303270 +/- 0.0006 Ecliptic Z -1.43086666 +/- 0.0000 Ecliptic XDOT -0.00207629 +/- 0.0000 Ecliptic YDOT 0.00193711 +/- 0.0000 Ecliptic ZDOT -0.00004281 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.96306133 +/- 0.0005 Geocenter to KBO 38.98264939 +/- 0.0008 # Hcoef: 7.83
The following table shows the complete astrometric record for 15VH173. 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 (15VH173) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.28657 03 02 01.632 +14 59 41.32 23.9r 15VH173 568 C~2nwH 2014 11 17.39535 03 02 01.075 +14 59 39.05 23.7r 15VH173 568 C~2nwH 2014 11 19.30032 03 01 51.488 +14 58 59.23 24.1r 15VH173 568 C~2nwH 2014 11 23.40372 03 01 31.034 +14 57 35.15 23.9r 15VH173 568 C~2nwH 2015 08 11.61007 03 12 50.496 +15 46 13.08 24.4w 15VH173 568 C~2nwH 2015 09 06.62757 03 12 47.090 +15 44 30.16 15VH173 568 C~2nwH 2015 09 12.51723 03 12 37.227 +15 43 32.45 24.1w 15VH173 568 C~2nwH 2015 10 08.45753 03 11 18.843 +15 37 09.88 24.0w 15VH173 568 C~2nwH 2015 10 08.51654 03 11 18.611 +15 37 08.74 24.2w 15VH173 568 C~2nwH 2015 11 07.36426 03 08 59.293 +15 27 07.18 24.0r 15VH173 568 C~2nwH 2015 11 07.40638 03 08 59.073 +15 27 06.32 23.9r 15VH173 568 C~2nwH 2015 11 07.44859 03 08 58.854 +15 27 05.42 23.9r 15VH173 568 C~2nwH 2015 11 10.53471 03 08 43.076 +15 26 00.33 23.9w 15VH173 568 C~2nwH 2015 11 17.38127 03 08 08.078 +15 23 37.57 24.0w 15VH173 568 C~2nwH 2015 11 17.42797 03 08 07.836 +15 23 36.64 23.9w 15VH173 568 C~2nwH 2015 12 06.39016 03 06 35.345 +15 17 32.24 24.2w 15VH173 568 C~2nwH 2015 12 13.32462 03 06 05.003 +15 15 37.93 24.0w 15VH173 568 C~2nwH 2015 12 13.38310 03 06 04.750 +15 15 37.03 23.9w 15VH173 568 C~2nwH 2016 01 01.37764 03 04 57.667 +15 11 40.46 23.8w 15VH173 568 C~2nwH 2016 01 07.32440 03 04 42.558 +15 10 53.56 24.1w 15VH173 568 C~2nwH 2016 02 04.30735 03 04 17.254 +15 10 33.07 24.0w 15VH173 568 C~2nwH 2016 02 04.31413 03 04 17.251 +15 10 32.97 24.3w 15VH173 568 C~2nwH 2016 02 04.32117 03 04 17.282 +15 10 33.31 24.2w 15VH173 568 C~2nwH 2016 02 04.32803 03 04 17.270 +15 10 33.26 24.1w 15VH173 568 C~2nwH 2016 02 05.26985 03 04 17.813 +15 10 38.50 24.1w 15VH173 568 C~2nwH 2016 02 10.29068 03 04 22.235 +15 11 13.01 24.1w 15VH173 568 C~2nwH 2016 09 26.58845 03 18 03.420 +16 02 55.16 24.0w 15VH173 568 C~2nwH 2016 10 10.39070 03 17 13.708 +15 59 09.54 24.1w 15VH173 568 C~2nwH 2016 10 10.44903 03 17 13.467 +15 59 08.53 24.1w 15VH173 568 C~2nwH 2016 11 02.54892 03 15 26.529 +15 51 38.33 23.9w 15VH173 568 C~2nwH 2016 11 04.42405 03 15 17.074 +15 50 59.81 24.1w 15VH173 568 C~2nwH 2016 12 24.30148 03 11 23.663 +15 36 17.50 24.0w 15VH173 568 C~2nwH 2017 01 02.40371 03 10 54.870 +15 34 43.94 23.9w 15VH173 568 C~2nwH 2017 01 26.26424 03 10 14.968 +15 33 13.18 23.8w 15VH173 568 C~2nwH 2017 01 26.29235 03 10 14.956 +15 33 13.27 23.9w 15VH173 568 C~2nwH 2017 09 16.60944 03 24 34.675 +16 26 59.06 24.1w 15VH173 568 C~2nwH 2017 09 23.54857 03 24 17.906 +16 25 36.01 23.9w 15VH173 568 C~2nwH
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 0.00 0.00 0.04
2 0.0003 -8.38 0.02 0.07 0.03
3 0.0055 -152.89 0.02 0.60 0.00
4 0.0167 -460.97 -0.02 2.66 0.02
5 0.7319 9797.18 -0.09 123.95 -0.01
6 0.8031 9722.15 0.17 37.80 -0.36
7 0.8192 9569.18 -0.04 20.20 0.01
8 0.8903 8373.76 -0.06 -45.14 0.06
9 0.8904 8370.22 0.03 -45.34 -0.04
10 0.9721 6266.49 0.06 -80.98 -0.03
11 0.9723 6263.20 0.04 -80.94 0.01
12 0.9724 6259.90 0.04 -80.95 -0.00
13 0.9808 6022.46 -0.03 -81.67 0.03
14 0.9996 5496.21 -0.02 -81.43 0.01
15 0.9997 5492.59 -0.01 -81.38 0.04
16 1.0516 4105.26 -0.03 -66.52 -0.09
17 1.0706 3651.53 0.03 -56.04 0.03
18 1.0708 3647.77 -0.01 -55.90 0.05
19 1.1228 2649.00 0.04 -16.19 0.03
20 1.1390 2425.80 0.04 -0.92 0.06
21 1.2157 2068.03 -0.12 80.59 -0.04
22 1.2157 2067.96 -0.25 80.50 -0.14
23 1.2157 2068.49 0.22 80.71 0.04
24 1.2157 2068.30 -0.01 80.71 0.02
25 1.2183 2077.31 -0.01 83.57 0.01
26 1.2320 2148.38 -0.05 99.04 0.21
27 1.8598 14431.78 -0.02 -101.30 0.08
28 1.8976 13677.50 -0.00 -131.77 -0.02
29 1.8978 13673.87 0.01 -131.83 -0.00
30 1.9610 12060.99 -0.10 -160.63 0.03
31 1.9662 11918.75 -0.01 -161.75 -0.06
32 2.1027 8426.85 0.08 -114.36 0.03
33 2.1276 8000.33 0.04 -92.61 -0.02
34 2.1930 7419.82 -0.01 -24.57 -0.00
35 2.1930 7419.68 0.06 -24.44 0.04
36 2.8318 20289.55 0.06 -154.90 -0.03
37 2.8508 20032.69 -0.06 -174.19 -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.
15VH173 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.242 44.250 44.233 ecceobj 0.097 0.098 0.097 incobj 2.213 2.214 2.213 qmin 38.420 38.483 38.395 qmax 49.641 49.560 49.620 amean 43.872 43.880 43.866 amin 43.505 43.517 43.500 amax 44.260 44.282 44.255 emean 0.101 0.101 0.101 emin 0.078 0.080 0.079 emax 0.122 0.120 0.121 imean 2.673 2.696 2.656 imin 1.733 1.759 1.695 imax 3.559 3.550 3.569 excite_mean 0.111 0.112 0.111 fracstop 1.000 1.000 1.000 cjmean 3.085 3.085 3.085 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 186.6 186.2 186.7 kozaiamp 179.9 179.9 180.0