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: 15VY169 # Created Fri Apr 26 01:17:41 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 1.35y # First observation: 2015/08/20 # Last observation: 2016/12/24 Preliminary a, adot, b, bdot, g, gdot: -0.000097 0.027025 0.000002 -0.005349 0.025569 0.000000 # Chi-squared of fit: 8.85 DOF: 52 RMS: 0.10 # Min/Max residuals: -0.30 0.27 # Exact a, adot, b, bdot, g, gdot: 1.691189E-05 2.651122E-02 -3.525385E-06 -5.240384E-03 2.523337E-02 -3.891071E-05 # Covariance matrix: 2.4722E-13 1.2690E-13 1.7273E-14 -9.4271E-14 2.9350E-13 1.2734E-11 1.2690E-13 1.1537E-12 6.8570E-14 -3.8780E-13 7.9873E-13 5.2072E-11 1.7273E-14 6.8570E-14 1.1320E-13 -1.4720E-13 5.8551E-14 3.9067E-12 -9.4271E-14 -3.8780E-13 -1.4720E-13 4.0094E-13 -3.2742E-13 -2.2149E-11 2.9350E-13 7.9873E-13 5.8551E-14 -3.2742E-13 7.8249E-13 4.4047E-11 1.2734E-11 5.2072E-11 3.9067E-12 -2.2149E-11 4.4047E-11 2.9728E-09 # lat0 lon0 xBary yBary zBary JD0 -0.507891 54.611216 1.013621 -0.000265 -0.044603 2457255.045359 # Heliocentric elements and errors Epoch: 2457250.5000 = 2015/08/16 Mean Anomaly: 351.03751 +/- 0.613 Argument of Peri: 194.93869 +/- 0.851 Long of Asc Node: 230.59325 +/- 0.000 Inclination: 11.21798 +/- 0.001 Eccentricity: 0.15405934 +/- 0.0004 Semi-Major Axis: 46.76788587 +/- 0.0053 Time of Perihelion: 2460158.8473 +/- 199.0 Perihelion: 39.56285626 +/- 0.0197 Aphelion: 53.97291549 +/- 0.0201 Period (y) 319.8378 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 23.79781071 +/- 0.0008 Ecliptic Y 31.75600749 +/- 0.0011 Ecliptic Z -0.35140597 +/- 0.0000 Ecliptic XDOT -0.00235240 +/- 0.0000 Ecliptic YDOT 0.00165192 +/- 0.0000 Ecliptic ZDOT -0.00056847 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.68505125 +/- 0.0010 Geocenter to KBO 39.63005763 +/- 0.0014 # Hcoef: 8.27
The following table shows the complete astrometric record for 15VY169. 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 (15VY169) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.54457 03 29 31.495 +18 25 46.47 24.3w 15VY169 568 C~2nw4 2015 08 20.55007 03 29 31.504 +18 25 46.48 24.6w 15VY169 568 C~2nw4 2015 09 07.60044 03 29 28.689 +18 24 26.68 24.4w 15VY169 568 C~2nw4 2015 09 12.44733 03 29 22.366 +18 23 45.48 24.7w 15VY169 568 C~2nw4 2015 10 07.49766 03 28 15.689 +18 18 11.93 24.4w 15VY169 568 C~2nw4 2015 10 07.55607 03 28 15.461 +18 18 10.94 24.4w 15VY169 568 C~2nw4 2015 10 09.53675 03 28 08.015 +18 17 36.96 24.5w 15VY169 568 C~2nw4 2015 11 06.31257 03 26 00.924 +18 08 19.78 24.3r 15VY169 568 C~2nw4 2015 11 06.37589 03 26 00.596 +18 08 18.21 24.6r 15VY169 568 C~2nw4 2015 11 06.44667 03 26 00.221 +18 08 16.81 24.1r 15VY169 568 C~2nw4 2015 11 07.46686 03 25 54.980 +18 07 54.50 24.4w 15VY169 568 C~2nw4 2015 11 17.44798 03 25 03.253 +18 04 13.66 24.2w 15VY169 568 C~2nw4 2015 11 17.49527 03 25 03.003 +18 04 12.56 24.3w 15VY169 568 C~2nw4 2015 12 06.31417 03 23 27.787 +17 57 26.55 24.4w 15VY169 568 C~2nw4 2015 12 06.44064 03 23 27.179 +17 57 24.01 24.2w 15VY169 568 C~2nw4 2015 12 06.44787 03 23 27.124 +17 57 23.73 24.1w 15VY169 568 C~2nw4 2015 12 31.33561 03 21 44.930 +17 50 00.02 24.6w 15VY169 568 C~2nw4 2016 01 07.36493 03 21 24.179 +17 48 26.21 24.6w 15VY169 568 C~2nw4 2016 01 07.41708 03 21 24.017 +17 48 25.41 24.9w 15VY169 568 C~2nw4 2016 02 05.31154 03 20 48.657 +17 45 11.33 24.5w 15VY169 568 C~2nw4 2016 02 11.26421 03 20 52.155 +17 45 12.58 24.6w 15VY169 568 C~2nw4 2016 09 25.62123 03 35 28.578 +18 25 24.80 24.4w 15VY169 568 C~2nw4 2016 10 10.56080 03 34 39.384 +18 21 34.57 24.5w 15VY169 568 C~2nw4 2016 10 10.60927 03 34 39.201 +18 21 33.70 24.5w 15VY169 568 C~2nw4 2016 10 28.49380 03 33 20.682 +18 15 53.61 24.4w 15VY169 568 C~2nw4 2016 10 29.53251 03 33 15.632 +18 15 32.21 24.6w 15VY169 568 C~2nw4 2016 11 02.58549 03 32 55.579 +18 14 07.97 24.2w 15VY169 568 C~2nw4 2016 12 24.34518 03 28 43.322 +17 56 49.44 24.6w 15VY169 568 C~2nw4 2016 12 24.36175 03 28 43.252 +17 56 49.22 24.6w 15VY169 568 C~2nw4
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 -0.06 0.00 0.05
2 0.0000 0.13 0.01 -0.02 0.05
3 0.0494 -58.12 0.04 -67.70 0.05
4 0.0627 -155.42 -0.30 -85.81 0.15
5 0.1313 -1157.41 0.11 -177.89 0.01
6 0.1314 -1160.80 0.01 -178.06 0.04
7 0.1369 -1271.93 -0.04 -185.07 0.10
8 0.2129 -3164.42 0.27 -279.54 -0.05
9 0.2131 -3169.34 0.22 -279.91 -0.25
10 0.2133 -3174.86 0.16 -279.94 -0.08
11 0.2161 -3252.79 -0.11 -283.06 0.04
12 0.2434 -4022.27 -0.06 -313.98 0.06
13 0.2435 -4026.00 -0.07 -314.16 0.02
14 0.2951 -5443.35 -0.02 -368.08 -0.06
15 0.2954 -5452.39 0.15 -368.37 -0.04
16 0.2954 -5453.22 -0.16 -368.44 -0.09
17 0.3636 -6978.10 -0.04 -430.39 -0.04
18 0.3828 -7288.90 0.13 -446.11 0.05
19 0.3830 -7291.34 -0.19 -446.30 -0.03
20 0.4621 -7829.86 -0.03 -505.86 -0.06
21 0.4784 -7781.14 -0.03 -517.36 0.02
22 1.1008 4930.38 -0.00 -1234.94 -0.03
23 1.1417 4195.27 -0.02 -1293.83 0.05
24 1.1419 4192.53 0.09 -1294.07 -0.00
25 1.1908 3025.28 -0.03 -1359.61 0.03
26 1.1937 2950.30 -0.07 -1363.28 -0.05
27 1.2048 2652.73 -0.03 -1377.08 -0.03
28 1.3465 -1088.58 0.05 -1517.80 0.02
29 1.3465 -1089.61 -0.00 -1517.77 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.
15VY169 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 47.264 47.286 47.245 ecceobj 0.161 0.161 0.162 incobj 11.176 11.175 11.176 qmin 38.611 38.695 38.661 qmax 55.404 55.398 55.402 amean 46.844 46.864 46.826 amin 46.443 46.469 46.409 amax 47.289 47.329 47.288 emean 0.159 0.159 0.159 emin 0.146 0.146 0.146 emax 0.172 0.172 0.172 imean 12.291 12.289 12.292 imin 11.853 11.856 11.855 imax 12.755 12.749 12.764 excite_mean 0.265 0.265 0.266 fracstop 1.000 1.000 1.000 cjmean 3.049 3.049 3.049 libcent 0 184.8 -180.0 -180.0 libamp 0 140.7 -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 181.8 181.6 181.7 kozaiamp 180.0 180.0 180.0