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: 15VZ172 # Created Mon Apr 28 01:10:44 2025 # Orbit generated from Bernstein formalism # Fitting 32 observations of 32 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000026 0.021088 0.000000 0.000661 0.022846 0.000000 # Chi-squared of fit: 14.66 DOF: 58 RMS: 0.12 # Min/Max residuals: -0.31 0.32 # Exact a, adot, b, bdot, g, gdot: 1.472771E-05 2.120959E-02 4.700786E-07 6.658083E-04 2.294350E-02 4.201691E-05 # Covariance matrix: 3.8820E-13 -4.2290E-13 5.6670E-15 -9.8074E-15 -2.1050E-13 -4.7780E-12 -4.2290E-13 6.0757E-13 -9.4890E-15 1.6604E-14 3.2231E-13 8.0580E-12 5.6670E-15 -9.4890E-15 1.9735E-13 -1.0646E-13 -5.9225E-15 -1.4339E-13 -9.8074E-15 1.6604E-14 -1.0646E-13 7.5246E-14 9.6167E-15 2.5137E-13 -2.1050E-13 3.2231E-13 -5.9225E-15 9.6167E-15 3.2466E-13 4.7937E-12 -4.7780E-12 8.0580E-12 -1.4339E-13 2.5137E-13 4.7937E-12 1.2191E-10 # lat0 lon0 xBary yBary zBary JD0 -1.312775 48.435789 -0.105747 -0.022383 -0.983540 2456978.885908 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 176.77533 +/- 0.836 Argument of Peri: 147.48053 +/- 0.836 Long of Asc Node: 84.06015 +/- 0.011 Inclination: 2.21095 +/- 0.001 Eccentricity: 0.03440030 +/- 0.0001 Semi-Major Axis: 43.08797452 +/- 0.0028 Time of Perihelion: 2509549.7037 +/- 239.7 Perihelion: 41.60573547 +/- 0.0035 Aphelion: 44.57021357 +/- 0.0037 Period (y) 282.8410 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.47994219 +/- 0.0007 Ecliptic Y 33.41029537 +/- 0.0008 Ecliptic Z -0.99855358 +/- 0.0000 Ecliptic XDOT -0.00189342 +/- 0.0000 Ecliptic YDOT 0.00167932 +/- 0.0000 Ecliptic ZDOT 0.00007942 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.56805961 +/- 0.0008 Geocenter to KBO 43.58533539 +/- 0.0011 # Hcoef: 8.81
The following table shows the complete astrometric record for 15VZ172. 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 (15VZ172) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.38513 03 05 25.017 +16 03 10.29 25.1r 15VZ172 568 C~2nwF 2014 11 17.49897 03 05 24.501 +16 03 08.19 25.3r 15VZ172 568 C~2nwF 2014 11 19.28749 03 05 16.156 +16 02 34.76 25.5r 15VZ172 568 C~2nwF 2015 09 06.62350 03 14 33.082 +16 42 49.71 24.7w 15VZ172 568 C~2nwF 2015 09 12.51312 03 14 23.791 +16 42 06.25 25.3w 15VZ172 568 C~2nwF 2015 10 07.44703 03 13 14.927 +16 37 11.21 25.2w 15VZ172 568 C~2nwF 2015 10 08.45165 03 13 11.285 +16 36 56.12 25.6w 15VZ172 568 C~2nwF 2015 10 08.51072 03 13 11.074 +16 36 55.39 25.9w 15VZ172 568 C~2nwF 2015 11 07.35903 03 11 02.937 +16 28 19.87 25.1r 15VZ172 568 C~2nwF 2015 11 07.40112 03 11 02.723 +16 28 19.33 24.9r 15VZ172 568 C~2nwF 2015 11 07.44330 03 11 02.529 +16 28 18.29 25.0r 15VZ172 568 C~2nwF 2015 11 10.52886 03 10 48.025 +16 27 21.26 25.5w 15VZ172 568 C~2nwF 2015 11 17.37547 03 10 15.778 +16 25 15.30 25.5w 15VZ172 568 C~2nwF 2015 11 17.42215 03 10 15.548 +16 25 14.42 25.1w 15VZ172 568 C~2nwF 2015 12 13.31874 03 08 21.757 +16 18 01.41 25.5w 15VZ172 568 C~2nwF 2016 01 01.37186 03 07 18.343 +16 14 15.24 25.8w 15VZ172 568 C~2nwF 2016 01 07.31862 03 07 03.812 +16 13 27.46 25.5w 15VZ172 568 C~2nwF 2016 02 10.28486 03 06 40.079 +16 13 02.79 25.4w 15VZ172 568 C~2nwF 2016 09 06.60560 03 19 19.398 +17 03 39.46 15VZ172 568 C~2nwF 2016 10 10.40230 03 17 51.053 +16 57 29.51 25.6w 15VZ172 568 C~2nwF 2016 10 10.46065 03 17 50.824 +16 57 28.60 25.6w 15VZ172 568 C~2nwF 2016 10 27.49100 03 16 39.973 +16 52 49.71 25.4w 15VZ172 568 C~2nwF 2016 10 27.49679 03 16 39.949 +16 52 49.32 25.4w 15VZ172 568 C~2nwF 2016 11 03.51606 03 16 07.826 +16 50 45.17 25.6w 15VZ172 568 C~2nwF 2016 11 03.52184 03 16 07.792 +16 50 45.02 25.5w 15VZ172 568 C~2nwF 2016 12 24.29598 03 12 27.847 +16 37 09.31 25.4w 15VZ172 568 C~2nwF 2017 01 02.39822 03 12 00.740 +16 35 37.48 25.6w 15VZ172 568 C~2nwF 2017 01 26.28489 03 11 21.666 +16 33 49.37 26.5w 15VZ172 568 C~2nwF 2017 01 26.32220 03 11 21.628 +16 33 49.48 26.4w 15VZ172 568 C~2nwF 2017 09 17.60038 03 23 49.591 +17 22 49.28 25.5w 15VZ172 568 C~2nwF 2017 09 23.58734 03 23 35.616 +17 21 51.41 25.4w 15VZ172 568 C~2nwF 2017 12 16.39181 03 17 46.303 +17 00 04.74 25.0w 15VZ172 568 C~2nwF
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 -0.02 0.00 -0.00
2 0.0003 -7.73 0.32 0.02 -0.08
3 0.0052 -132.58 -0.31 0.93 -0.26
4 0.8028 8240.85 0.09 168.07 -0.08
5 0.8190 8100.41 -0.09 161.37 0.16
6 0.8872 7066.62 -0.06 138.73 0.03
7 0.8900 7012.08 0.02 138.08 -0.01
8 0.8901 7008.96 0.20 138.18 0.10
9 0.9719 5094.06 -0.04 132.74 0.02
10 0.9720 5090.94 -0.16 133.04 0.29
11 0.9721 5087.98 -0.13 132.79 0.01
12 0.9805 4871.56 0.04 133.79 -0.02
13 0.9993 4390.60 0.03 137.07 -0.02
14 0.9994 4387.17 -0.07 137.11 -0.02
15 1.0703 2692.83 0.16 162.47 -0.23
16 1.1225 1752.50 0.12 192.99 0.06
17 1.1388 1538.11 0.07 204.05 0.18
18 1.2318 1202.51 -0.12 273.61 0.14
19 1.8048 12545.16 -0.01 302.75 -0.08
20 1.8974 11221.00 0.08 273.33 -0.05
21 1.8975 11217.58 -0.01 273.30 -0.07
22 1.9442 10160.43 -0.02 268.86 0.10
23 1.9442 10160.00 -0.06 268.57 -0.18
24 1.9634 9681.35 0.03 269.33 0.02
25 1.9634 9680.83 -0.07 269.31 0.00
26 2.1024 6413.07 0.21 316.87 0.16
27 2.1273 6012.68 -0.13 332.22 0.08
28 2.1927 5442.03 0.04 378.16 -0.18
29 2.1928 5441.53 -0.12 378.41 -0.01
30 2.8343 16601.90 -0.06 427.38 0.03
31 2.8507 16392.37 0.08 421.86 -0.06
32 3.0801 11195.45 0.00 441.18 -0.05
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.
15VZ172 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.398 43.406 43.389 ecceobj 0.028 0.028 0.028 incobj 2.210 2.210 2.210 qmin 40.987 41.064 40.985 qmax 45.348 45.353 45.337 amean 43.094 43.102 43.086 amin 42.764 42.776 42.763 amax 43.432 43.452 43.409 emean 0.026 0.025 0.026 emin 0.007 0.006 0.007 emax 0.044 0.044 0.045 imean 0.868 0.866 0.871 imin 0.552 0.548 0.556 imax 1.167 1.164 1.168 excite_mean 0.030 0.030 0.030 fracstop 1.000 1.000 1.000 cjmean 3.090 3.090 3.090 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 180.2 180.3 180.5 kozaiamp 179.9 180.0 179.9