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: 15VS165 # Created Sun Dec 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 23 observations of 23 # Arc: 2.35y # First observation: 2015/08/11 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000209 0.024967 -0.000013 0.000468 0.025466 0.000000 # Chi-squared of fit: 7.16 DOF: 40 RMS: 0.10 # Min/Max residuals: -0.22 0.26 # Exact a, adot, b, bdot, g, gdot: 1.532057E-05 2.460841E-02 1.721369E-07 4.570229E-04 2.523774E-02 5.279653E-03 # Covariance matrix: 3.3498E-13 2.5813E-14 9.6524E-15 -3.9304E-16 2.6123E-13 3.8651E-12 2.5813E-14 5.1029E-13 9.1486E-15 1.5759E-17 3.1025E-13 1.2799E-11 9.6524E-15 9.1486E-15 1.2639E-13 -9.7975E-14 1.3921E-14 3.0410E-13 -3.9304E-16 1.5759E-17 -9.7975E-14 1.4976E-13 -3.5651E-16 1.8242E-15 2.6123E-13 3.1025E-13 1.3921E-14 -3.5651E-16 4.1069E-13 1.0523E-11 3.8651E-12 1.2799E-11 3.0410E-13 1.8242E-15 1.0523E-11 4.5602E-10 # lat0 lon0 xBary yBary zBary JD0 -2.908264 50.513386 1.015287 0.001900 0.034985 2457246.085349 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 81.01390 +/- 0.114 Argument of Peri: 186.59475 +/- 0.067 Long of Asc Node: 120.42384 +/- 0.016 Inclination: 3.07050 +/- 0.000 Eccentricity: 0.18273863 +/- 0.0008 Semi-Major Axis: 39.40969731 +/- 0.0128 Time of Perihelion: 2436904.7529 +/- 26.8 Perihelion: 32.20802303 +/- 0.0333 Aphelion: 46.61137159 +/- 0.0351 Period (y) 247.4075 +/- 0.12 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.92116117 +/- 0.0007 Ecliptic Y 29.86800253 +/- 0.0008 Ecliptic Z -2.01032341 +/- 0.0001 Ecliptic XDOT -0.00169703 +/- 0.0000 Ecliptic YDOT 0.00213464 +/- 0.0000 Ecliptic ZDOT 0.00002051 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.59855517 +/- 0.0007 Geocenter to KBO 39.62319964 +/- 0.0010 # Hcoef: 9.14
The following table shows the complete astrometric record for 15VS165. 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 (15VS165) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.58456 03 15 29.947 +15 04 22.49 25.4w 15VS165 568 C~2lVc 2015 10 07.45992 03 14 01.266 +14 54 54.08 25.0w 15VS165 568 C~2lVc 2015 10 08.46335 03 13 57.233 +14 54 35.65 25.4w 15VS165 568 C~2lVc 2015 10 08.52236 03 13 56.982 +14 54 34.59 25.0w 15VS165 568 C~2lVc 2015 11 07.36952 03 11 35.528 +14 44 29.16 24.9r 15VS165 568 C~2lVc 2015 11 07.41164 03 11 35.303 +14 44 28.10 25.1r 15VS165 568 C~2lVc 2015 11 07.45387 03 11 35.085 +14 44 27.39 24.5r 15VS165 568 C~2lVc 2015 11 10.54061 03 11 19.014 +14 43 22.98 25.6w 15VS165 568 C~2lVc 2015 11 17.38710 03 10 43.348 +14 41 02.22 25.4w 15VS165 568 C~2lVc 2015 11 17.43381 03 10 43.093 +14 41 01.43 25.1w 15VS165 568 C~2lVc 2015 12 13.33048 03 08 37.340 +14 33 19.22 25.2w 15VS165 568 C~2lVc 2015 12 13.38903 03 08 37.081 +14 33 18.30 25.1w 15VS165 568 C~2lVc 2016 01 01.38342 03 07 27.593 +14 29 41.06 25.3w 15VS165 568 C~2lVc 2016 01 02.34977 03 07 24.806 +14 29 33.42 25.2w 15VS165 568 C~2lVc 2016 01 07.33018 03 07 11.725 +14 29 01.33 25.3w 15VS165 568 C~2lVc 2016 02 05.27611 03 06 43.343 +14 29 23.49 25.9w 15VS165 568 C~2lVc 2016 09 06.59818 03 21 04.047 +15 25 41.72 15VS165 568 C~2lVc 2016 11 02.54892 03 17 40.048 +15 10 10.43 25.4w 15VS165 568 C~2lVc 2016 11 04.42405 03 17 30.457 +15 09 32.26 25.2w 15VS165 568 C~2lVc 2016 12 24.31885 03 13 32.447 +14 55 21.21 26.1w 15VS165 568 C~2lVc 2017 01 26.30729 03 12 20.029 +14 52 56.10 25.7w 15VS165 568 C~2lVc 2017 09 21.62152 03 26 12.002 +15 45 47.32 25.3w 15VS165 568 C~2lVc 2017 12 16.35462 03 19 44.598 +15 20 47.74 25.6w 15VS165 568 C~2lVc
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 0.02
2 0.1557 -1389.15 0.26 -210.81 -0.14
3 0.1585 -1450.40 -0.06 -213.18 -0.03
4 0.1586 -1454.19 -0.16 -213.24 0.03
5 0.2403 -3592.81 0.03 -253.66 0.01
6 0.2405 -3596.24 -0.06 -253.81 -0.15
7 0.2406 -3599.48 0.06 -253.65 -0.00
8 0.2490 -3841.43 -0.04 -253.65 0.10
9 0.2678 -4377.91 -0.01 -251.25 -0.04
10 0.2679 -4381.69 -0.08 -251.02 0.14
11 0.3388 -6265.27 0.14 -206.70 0.06
12 0.3390 -6269.14 0.10 -206.58 0.01
13 0.3910 -7300.45 -0.02 -143.33 -0.04
14 0.3936 -7341.53 -0.05 -139.73 -0.22
15 0.4072 -7533.35 0.09 -119.17 0.13
16 0.4865 -7924.64 -0.18 14.01 0.07
17 1.0733 5002.32 -0.10 -16.10 0.08
18 1.2292 1909.55 0.08 -155.38 -0.05
19 1.2343 1765.53 0.08 -156.18 -0.02
20 1.3709 -1784.93 -0.07 -74.43 0.08
21 1.4613 -2835.76 -0.09 63.56 0.05
22 2.1137 9617.80 -0.10 25.21 0.05
23 2.3484 3815.80 0.15 -5.48 -0.12
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.
15VS165 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.814 39.853 39.776 ecceobj 0.187 0.189 0.185 incobj 3.072 3.071 3.071 qmin 31.493 31.437 31.537 qmax 47.886 47.744 47.778 amean 39.456 39.456 39.456 amin 39.085 39.051 39.123 amax 39.886 39.905 39.863 emean 0.185 0.187 0.184 emin 0.170 0.171 0.171 emax 0.201 0.200 0.199 imean 1.754 1.753 1.750 imin 1.435 1.424 1.443 imax 2.258 2.283 2.233 excite_mean 0.188 0.189 0.187 fracstop 1.000 1.000 1.000 cjmean 3.012 3.011 3.012 libcent 0 179.8 180.0 180.0 libamp 0 42.2 63.1 21.4 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 182.1 173.8 182.5 kozaiamp 180.0 180.0 180.0