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: 15VO173 # Created Sun Dec 22 02:10:38 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 2.35y # First observation: 2015/08/11 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000130 0.024817 -0.000004 0.009449 0.025338 0.000000 # Chi-squared of fit: 13.83 DOF: 52 RMS: 0.12 # Min/Max residuals: -0.30 0.29 # Exact a, adot, b, bdot, g, gdot: 1.586653E-05 2.444990E-02 5.372283E-06 9.314017E-03 2.510211E-02 3.363391E-03 # Covariance matrix: 2.0359E-13 -3.1266E-14 -2.9270E-15 2.3664E-14 1.2682E-13 1.2267E-12 -3.1266E-14 4.1139E-13 -5.4308E-14 2.1120E-13 2.2195E-13 1.0742E-11 -2.9270E-15 -5.4308E-14 1.1667E-13 -1.1646E-13 -3.3902E-14 -1.9393E-12 2.3664E-14 2.1120E-13 -1.1646E-13 2.5360E-13 1.4452E-13 7.4825E-12 1.2682E-13 2.2195E-13 -3.3902E-14 1.4452E-13 2.5713E-13 7.3745E-12 1.2267E-12 1.0742E-11 -1.9393E-12 7.4825E-12 7.3745E-12 3.8047E-10 # lat0 lon0 xBary yBary zBary JD0 -2.687064 50.292552 1.015415 0.001582 0.031083 2457246.085349 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 36.44505 +/- 0.121 Argument of Peri: 304.01076 +/- 0.194 Long of Asc Node: 55.89442 +/- 0.000 Inclination: 20.90564 +/- 0.001 Eccentricity: 0.15051802 +/- 0.0006 Semi-Major Axis: 44.80771268 +/- 0.0104 Time of Perihelion: 2446149.6814 +/- 36.6 Perihelion: 38.06334466 +/- 0.0301 Aphelion: 51.55208069 +/- 0.0311 Period (y) 299.9421 +/- 0.10 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.18007040 +/- 0.0005 Ecliptic Y 29.94107983 +/- 0.0006 Ecliptic Z -1.86736311 +/- 0.0000 Ecliptic XDOT -0.00178908 +/- 0.0000 Ecliptic YDOT 0.00201587 +/- 0.0000 Ecliptic ZDOT 0.00099761 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.81647137 +/- 0.0006 Geocenter to KBO 39.83729099 +/- 0.0008 # Hcoef: 8.96
The following table shows the complete astrometric record for 15VO173. 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 (15VO173) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.58456 03 14 22.583 +15 13 42.28 25.2w 15VO173 568 C~2nwI 2015 09 06.63168 03 14 16.006 +15 13 50.34 24.6w 15VO173 568 C~2nwI 2015 09 12.52133 03 14 05.392 +15 13 18.01 25.0w 15VO173 568 C~2nwI 2015 10 07.45992 03 12 47.529 +15 09 07.06 25.2w 15VO173 568 C~2nwI 2015 10 08.46335 03 12 43.408 +15 08 54.00 25.2w 15VO173 568 C~2nwI 2015 10 08.52236 03 12 43.186 +15 08 52.90 25.1w 15VO173 568 C~2nwI 2015 11 07.36952 03 10 19.119 +15 01 19.02 25.1r 15VO173 568 C~2nwI 2015 11 07.41164 03 10 18.907 +15 01 18.38 24.9r 15VO173 568 C~2nwI 2015 11 07.45387 03 10 18.668 +15 01 17.77 24.8r 15VO173 568 C~2nwI 2015 11 17.38710 03 09 26.190 +14 58 41.36 25.0w 15VO173 568 C~2nwI 2015 11 17.43381 03 09 25.943 +14 58 40.61 25.4w 15VO173 568 C~2nwI 2015 12 06.39016 03 07 50.065 +14 54 17.87 25.0w 15VO173 568 C~2nwI 2015 12 13.33048 03 07 18.422 +14 53 01.25 25.0w 15VO173 568 C~2nwI 2016 01 01.37764 03 06 07.527 +14 50 49.05 25.0w 15VO173 568 C~2nwI 2016 01 07.32440 03 05 51.302 +14 50 34.75 25.6w 15VO173 568 C~2nwI 2016 02 04.32117 03 05 20.782 +14 52 49.64 25.4w 15VO173 568 C~2nwI 2016 02 05.26985 03 05 21.133 +14 52 59.92 24.2w 15VO173 568 C~2nwI 2016 02 10.29068 03 05 24.660 +14 54 01.94 25.5w 15VO173 568 C~2nwI 2016 09 06.59240 03 19 19.288 +16 06 58.39 15VO173 568 C~2nwI 2016 09 26.58845 03 18 31.467 +16 04 47.45 26.2w 15VO173 568 C~2nwI 2016 10 10.39070 03 17 39.549 +16 02 13.02 25.5w 15VO173 568 C~2nwI 2016 10 10.44903 03 17 39.299 +16 02 12.25 25.5w 15VO173 568 C~2nwI 2016 10 27.49679 03 16 19.596 +15 58 13.29 25.1w 15VO173 568 C~2nwI 2016 11 03.52184 03 15 43.500 +15 56 26.31 25.3w 15VO173 568 C~2nwI 2016 12 24.30148 03 11 36.860 +15 45 41.88 25.1w 15VO173 568 C~2nwI 2017 01 02.40371 03 11 06.509 +15 44 52.86 24.8w 15VO173 568 C~2nwI 2017 09 23.54857 03 23 48.387 +16 58 02.34 25.3w 15VO173 568 C~2nwI 2017 12 16.38715 03 17 16.144 +16 40 26.84 25.1w 15VO173 568 C~2nwI 2017 12 16.39181 03 17 16.139 +16 40 26.65 25.4w 15VO173 568 C~2nwI
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 -0.10 0.00 0.10
2 0.0713 -89.70 -0.03 32.85 0.11
3 0.0874 -246.41 -0.20 42.16 0.03
4 0.1557 -1399.83 0.11 98.17 -0.17
5 0.1585 -1460.83 -0.04 101.40 0.10
6 0.1586 -1464.22 0.25 101.19 -0.30
7 0.2403 -3596.60 -0.06 219.85 0.07
8 0.2405 -3599.73 0.13 220.05 0.05
9 0.2406 -3603.23 -0.03 220.39 0.16
10 0.2678 -4377.95 -0.07 273.75 -0.00
11 0.2679 -4381.60 -0.03 273.99 -0.05
12 0.3198 -5791.39 -0.23 395.75 0.03
13 0.3388 -6254.09 -0.08 446.25 0.05
14 0.3909 -7280.29 -0.09 598.45 0.10
15 0.4072 -7510.84 -0.07 648.85 -0.30
16 0.4839 -7900.26 0.29 899.60 0.01
17 0.4865 -7892.55 -0.05 908.11 -0.10
18 0.5002 -7826.33 0.28 953.83 0.08
19 1.0733 4970.99 0.07 1969.48 0.00
20 1.1280 4270.99 0.12 2020.87 -0.03
21 1.1658 3507.85 0.01 2065.60 0.06
22 1.1660 3504.16 0.01 2065.79 0.02
23 1.2126 2332.08 0.02 2134.28 0.01
24 1.2319 1801.56 0.09 2167.13 -0.06
25 1.3709 -1801.49 0.04 2485.80 -0.04
26 1.3958 -2236.93 -0.22 2555.49 0.08
27 2.1190 9500.65 -0.03 3947.95 -0.14
28 2.3485 3779.01 -0.12 4369.15 0.16
29 2.3485 3778.89 0.06 4368.98 -0.04
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.
15VO173 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.305 45.342 45.269 ecceobj 0.160 0.162 0.158 incobj 20.841 20.841 20.841 qmin 37.371 37.273 37.378 qmax 52.865 52.975 52.727 amean 44.925 44.959 44.888 amin 44.552 44.578 44.519 amax 45.345 45.382 45.306 emean 0.151 0.153 0.150 emin 0.138 0.139 0.136 emax 0.166 0.168 0.165 imean 19.756 19.759 19.754 imin 19.301 19.303 19.309 imax 20.214 20.222 20.205 excite_mean 0.370 0.371 0.370 fracstop 1.000 1.000 1.000 cjmean 2.942 2.942 2.943 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 174.7 174.8 174.7 kozaiamp 180.0 180.0 180.0