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: 15VB164 # Created Sat Apr 20 01:17:36 2024 # Orbit generated from Bernstein formalism # Fitting 37 observations of 37 # Arc: 2.32y # First observation: 2015/08/20 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000104 0.022071 -0.000009 -0.010083 0.024123 0.000000 # Chi-squared of fit: 6.35 DOF: 68 RMS: 0.07 # Min/Max residuals: -0.20 0.24 # Exact a, adot, b, bdot, g, gdot: 1.533694E-05 2.172110E-02 -6.951935E-06 -9.940104E-03 2.388500E-02 1.603206E-03 # Covariance matrix: 1.8137E-13 -6.1898E-14 8.9564E-15 -2.4159E-14 1.1013E-13 1.2919E-12 -6.1898E-14 2.9028E-13 4.4344E-14 -1.5874E-13 1.3570E-13 8.2332E-12 8.9564E-15 4.4344E-14 1.1323E-13 -1.2473E-13 3.7903E-14 2.0728E-12 -2.4159E-14 -1.5874E-13 -1.2473E-13 2.5589E-13 -1.2611E-13 -7.3964E-12 1.1013E-13 1.3570E-13 3.7903E-14 -1.2611E-13 2.1616E-13 6.5879E-12 1.2919E-12 8.2332E-12 2.0728E-12 -7.3964E-12 6.5879E-12 3.8375E-10 # lat0 lon0 xBary yBary zBary JD0 -1.995391 54.145242 1.013211 -0.001715 -0.053012 2457255.056669 # Heliocentric elements and errors Epoch: 2457250.5000 = 2015/08/16 Mean Anomaly: 30.70488 +/- 0.411 Argument of Peri: 149.06969 +/- 0.501 Long of Asc Node: 228.42650 +/- 0.000 Inclination: 24.70427 +/- 0.001 Eccentricity: 0.07810835 +/- 0.0005 Semi-Major Axis: 44.86321212 +/- 0.0058 Time of Perihelion: 2447889.1413 +/- 125.4 Perihelion: 41.35902069 +/- 0.0250 Aphelion: 48.36740355 +/- 0.0252 Period (y) 300.4995 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.35637493 +/- 0.0005 Ecliptic Y 33.36241104 +/- 0.0007 Ecliptic Z -1.45804879 +/- 0.0000 Ecliptic XDOT -0.00193566 +/- 0.0000 Ecliptic YDOT 0.00156869 +/- 0.0000 Ecliptic ZDOT -0.00114505 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.92996692 +/- 0.0006 Geocenter to KBO 41.86728578 +/- 0.0008 # Hcoef: 7.74
The following table shows the complete astrometric record for 15VB164. 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 (15VB164) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.55588 03 29 08.773 +16 52 24.41 24.3w 15VB164 568 C~2fCN 2015 09 07.60452 03 29 04.505 +16 49 30.54 24.2w 15VB164 568 C~2fCN 2015 09 12.45550 03 28 58.145 +16 48 25.40 24.1w 15VB164 568 C~2fCN 2015 10 07.50351 03 27 53.395 +16 41 01.71 24.5w 15VB164 568 C~2fCN 2015 10 07.56195 03 27 53.185 +16 41 00.50 23.9w 15VB164 568 C~2fCN 2015 10 09.54866 03 27 46.020 +16 40 18.74 24.0w 15VB164 568 C~2fCN 2015 11 06.32308 03 25 44.629 +16 29 34.11 23.7r 15VB164 568 C~2fCN 2015 11 06.38643 03 25 44.324 +16 29 32.75 24.3r 15VB164 568 C~2fCN 2015 11 06.45719 03 25 43.968 +16 29 30.96 23.7r 15VB164 568 C~2fCN 2015 11 07.47849 03 25 38.983 +16 29 05.95 24.0w 15VB164 568 C~2fCN 2015 11 17.45967 03 24 49.745 +16 25 03.12 23.9w 15VB164 568 C~2fCN 2015 11 17.54796 03 24 49.297 +16 25 00.89 24.2w 15VB164 568 C~2fCN 2015 12 06.32589 03 23 18.880 +16 17 46.37 24.5w 15VB164 568 C~2fCN 2015 12 06.45961 03 23 18.251 +16 17 43.17 23.7w 15VB164 568 C~2fCN 2015 12 31.34718 03 21 40.681 +16 09 58.13 24.1w 15VB164 568 C~2fCN 2016 01 07.37652 03 21 20.697 +16 08 20.32 24.3w 15VB164 568 C~2fCN 2016 01 08.23883 03 21 18.534 +16 08 09.55 24.5w 15VB164 568 C~2fCN 2016 02 05.32968 03 20 45.284 +16 04 50.28 24.1w 15VB164 568 C~2fCN 2016 02 11.27580 03 20 48.127 +16 04 47.22 24.7w 15VB164 568 C~2fCN 2016 09 07.60834 03 34 42.245 +16 33 59.80 15VB164 568 C~2fCN 2016 09 25.61718 03 34 09.069 +16 29 16.39 24.1w 15VB164 568 C~2fCN 2016 09 27.53529 03 34 03.919 +16 28 41.14 24.7w 15VB164 568 C~2fCN 2016 10 07.52743 03 33 32.492 +16 25 23.45 24.0w 15VB164 568 C~2fCN 2016 10 07.53507 03 33 32.447 +16 25 23.22 23.8w 15VB164 568 C~2fCN 2016 10 07.62286 03 33 32.129 +16 25 21.50 24.4w 15VB164 568 C~2fCN 2016 10 09.52781 03 33 25.344 +16 24 41.45 24.1w 15VB164 568 C~2fCN 2016 10 09.59992 03 33 25.071 +16 24 39.91 24.1w 15VB164 568 C~2fCN 2016 10 10.55675 03 33 21.559 +16 24 19.51 24.0w 15VB164 568 C~2fCN 2016 10 10.60523 03 33 21.377 +16 24 18.45 24.1w 15VB164 568 C~2fCN 2016 10 28.47637 03 32 06.418 +16 17 33.67 24.7w 15VB164 568 C~2fCN 2016 10 29.53828 03 32 01.515 +16 17 08.57 24.4w 15VB164 568 C~2fCN 2016 10 29.55586 03 32 01.425 +16 17 08.19 24.1w 15VB164 568 C~2fCN 2016 11 02.59127 03 31 42.423 +16 15 32.25 24.1w 15VB164 568 C~2fCN 2016 12 24.35153 03 27 43.167 +15 56 53.61 24.1w 15VB164 568 C~2fCN 2017 01 27.33320 03 26 24.638 +15 50 50.06 23.9w 15VB164 568 C~2fCN 2017 09 22.59895 03 39 55.373 +16 14 19.49 24.5w 15VB164 568 C~2fCN 2017 12 13.35764 03 34 08.909 +15 44 50.99 24.2w 15VB164 568 C~2fCN
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 -0.20 0.00 0.08
2 0.0494 -101.77 -0.00 -153.72 0.02
3 0.0627 -206.21 -0.11 -194.64 0.04
4 0.1313 -1216.51 -0.06 -397.63 -0.03
5 0.1314 -1219.73 -0.03 -398.06 -0.04
6 0.1369 -1329.78 0.01 -413.32 -0.03
7 0.2129 -3180.19 0.10 -608.14 -0.03
8 0.2131 -3184.78 0.24 -608.37 0.11
9 0.2133 -3190.18 0.14 -608.84 0.06
10 0.2161 -3265.86 0.01 -615.32 -0.02
11 0.2434 -4012.54 0.04 -674.76 -0.01
12 0.2436 -4019.34 -0.04 -675.32 -0.07
13 0.2951 -5388.70 0.02 -771.33 0.07
14 0.2954 -5398.28 -0.14 -772.16 -0.19
15 0.3636 -6876.61 0.15 -868.99 -0.03
16 0.3828 -7180.27 -0.03 -890.92 0.04
17 0.3852 -7213.19 -0.08 -893.46 0.09
18 0.4621 -7727.88 -0.04 -965.00 0.01
19 0.4784 -7688.97 -0.04 -978.35 -0.03
20 1.0515 4386.12 0.07 -2222.83 -0.00
21 1.1008 3855.23 -0.03 -2385.07 -0.03
22 1.1060 3774.87 0.03 -2401.72 0.02
23 1.1334 3288.55 0.14 -2486.19 -0.05
24 1.1334 3287.87 -0.12 -2486.26 -0.06
25 1.1337 3283.01 -0.13 -2486.84 0.07
26 1.1389 3178.63 0.09 -2502.48 0.01
27 1.1391 3174.44 0.02 -2503.04 0.02
28 1.1417 3120.49 -0.01 -2510.80 0.00
29 1.1418 3117.69 0.01 -2511.21 -0.02
30 1.1907 1973.02 -0.05 -2646.18 -0.00
31 1.1937 1898.45 0.13 -2653.61 -0.05
32 1.1937 1897.10 0.05 -2653.67 0.01
33 1.2048 1608.42 0.01 -2681.07 0.01
34 1.3465 -2008.45 -0.06 -2929.17 0.00
35 1.4395 -3196.27 -0.03 -3003.05 0.01
36 2.0918 8496.82 -0.03 -4425.66 -0.00
37 2.3157 3220.17 -0.03 -4974.83 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.
15VB164 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.289 45.312 45.267 ecceobj 0.087 0.089 0.086 incobj 24.606 24.606 24.606 qmin 40.614 40.574 40.678 qmax 49.501 49.618 49.408 amean 44.945 44.966 44.924 amin 44.591 44.614 44.571 amax 45.318 45.344 45.304 emean 0.081 0.082 0.079 emin 0.070 0.071 0.068 emax 0.093 0.094 0.091 imean 25.677 25.678 25.677 imin 25.389 25.383 25.386 imax 25.926 25.923 25.919 excite_mean 0.441 0.441 0.441 fracstop 1.000 1.000 1.000 cjmean 2.864 2.864 2.864 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 194.1 193.8 194.6 kozaiamp 180.0 180.0 180.0