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: 15VX167
# Created Sun Dec 22 02:10:34 2024
# Orbit generated from Bernstein formalism
# Fitting 28 observations of 28
# Arc: 2.32y
# First observation: 2015/08/20
# Last observation: 2017/12/13
Preliminary a, adot, b, bdot, g, gdot:
-0.000149 0.027284 0.000005 -0.009995 0.027349 0.000000
# Chi-squared of fit: 6.23 DOF: 50 RMS: 0.08
# Min/Max residuals: -0.26 0.25
# Exact a, adot, b, bdot, g, gdot:
1.571364E-05 2.683268E-02 -5.989684E-06 -9.829406E-03 2.707888E-02 8.805623E-04
# Covariance matrix:
1.9087E-13 -1.3365E-14 6.7806E-15 -2.9192E-14 1.3166E-13 1.3832E-12
-1.3365E-14 4.1869E-13 4.7255E-14 -1.9292E-13 2.3615E-13 8.9547E-12
6.7806E-15 4.7255E-14 1.1121E-13 -9.9407E-14 3.2500E-14 1.3103E-12
-2.9192E-14 -1.9292E-13 -9.9407E-14 2.0980E-13 -1.3446E-13 -5.3452E-12
1.3166E-13 2.3615E-13 3.2500E-14 -1.3446E-13 2.7720E-13 6.2741E-12
1.3832E-12 8.9547E-12 1.3103E-12 -5.3452E-12 6.2741E-12 2.4802E-10
# lat0 lon0 xBary yBary zBary JD0
0.479186 53.453750 1.012481 0.000681 -0.065458 2457255.068249
# Heliocentric elements and errors
Epoch: 2457250.5000 = 2015/08/16
Mean Anomaly: 3.81891 +/- 0.689
Argument of Peri: 174.42087 +/- 0.753
Long of Asc Node: 233.19563 +/- 0.000
Inclination: 20.11571 +/- 0.001
Eccentricity: 0.04339997 +/- 0.0001
Semi-Major Axis: 38.68047406 +/- 0.0024
Time of Perihelion: 2456318.3780 +/- 168.2
Perihelion: 37.00174271 +/- 0.0040
Aphelion: 40.35920541 +/- 0.0041
Period (y) 240.5724 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 22.83786631 +/- 0.0004
Ecliptic Y 29.11648941 +/- 0.0006
Ecliptic Z 0.30864996 +/- 0.0000
Ecliptic XDOT -0.00212356 +/- 0.0000
Ecliptic YDOT 0.00168732 +/- 0.0000
Ecliptic ZDOT -0.00099298 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.00585573 +/- 0.0005
Geocenter to KBO 36.92915186 +/- 0.0007
# Hcoef: 8.01
The following table shows the complete astrometric record for 15VX167. 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 (15VX167) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.56746 03 23 45.445 +19 06 01.94 24.1w 15VX167 568 C~2lVk 2015 09 07.61267 03 23 39.225 +19 04 09.36 24.2w 15VX167 568 C~2lVk 2015 09 12.46374 03 23 31.622 +19 03 16.75 24.0w 15VX167 568 C~2lVk 2015 10 07.51519 03 22 16.099 +18 56 26.98 23.8w 15VX167 568 C~2lVk 2015 10 07.57457 03 22 15.843 +18 56 25.73 24.0w 15VX167 568 C~2lVk 2015 10 09.55447 03 22 07.597 +18 55 44.45 23.9w 15VX167 568 C~2lVk 2015 11 06.32832 03 19 48.459 +18 44 28.93 23.5r 15VX167 568 C~2lVk 2015 11 06.39169 03 19 48.096 +18 44 27.36 22.9r 15VX167 568 C~2lVk 2015 11 06.46246 03 19 47.699 +18 44 25.32 23.7r 15VX167 568 C~2lVk 2015 11 07.48432 03 19 42.035 +18 43 58.37 23.8w 15VX167 568 C~2lVk 2015 11 17.46555 03 18 46.147 +18 39 29.03 23.8w 15VX167 568 C~2lVk 2015 11 17.55383 03 18 45.639 +18 39 26.55 23.7w 15VX167 568 C~2lVk 2015 12 06.46917 03 17 03.199 +18 31 03.34 23.8w 15VX167 568 C~2lVk 2015 12 31.35296 03 15 15.686 +18 21 36.40 24.1w 15VX167 568 C~2lVk 2016 01 07.38230 03 14 54.329 +18 19 30.18 24.1w 15VX167 568 C~2lVk 2016 02 04.34615 03 14 20.410 +18 14 25.36 23.9w 15VX167 568 C~2lVk 2016 02 11.23523 03 14 25.510 +18 14 02.95 24.0w 15VX167 568 C~2lVk 2016 09 07.59677 03 30 34.372 +18 53 52.95 24.1w 15VX167 568 C~2lVk 2016 10 05.51115 03 29 21.513 +18 46 48.03 24.0w 15VX167 568 C~2lVk 2016 10 07.51560 03 29 13.603 +18 46 07.56 24.1w 15VX167 568 C~2lVk 2016 10 07.61130 03 29 13.204 +18 46 05.50 23.8w 15VX167 568 C~2lVk 2016 11 04.45547 03 26 57.241 +18 35 11.32 23.9w 15VX167 568 C~2lVk 2016 12 28.44773 03 22 21.825 +18 13 12.49 23.9w 15VX167 568 C~2lVk 2017 01 27.31434 03 21 14.204 +18 06 20.83 24.0w 15VX167 568 C~2lVk 2017 09 15.55809 03 37 17.651 +18 41 16.16 24.1w 15VX167 568 C~2lVk 2017 09 20.60688 03 37 06.974 +18 40 05.58 15VX167 568 C~2lVk 2017 12 13.37172 03 30 27.352 +18 08 24.78 24.0w 15VX167 568 C~2lVk 2017 12 13.40930 03 30 27.162 +18 08 23.86 23.9w 15VX167 568 C~2lVk
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 -0.01 0.00 0.05
2 0.0494 -113.58 0.01 -86.88 0.03
3 0.0627 -231.13 0.02 -110.76 0.00
4 0.1313 -1370.96 0.07 -237.56 0.02
5 0.1314 -1374.79 -0.03 -237.85 0.02
6 0.1369 -1498.43 0.04 -248.21 0.00
7 0.2129 -3580.95 -0.05 -398.82 -0.22
8 0.2131 -3586.34 -0.12 -399.02 -0.10
9 0.2133 -3592.32 -0.14 -399.54 -0.26
10 0.2161 -3677.02 0.01 -404.99 0.00
11 0.2434 -4513.98 0.07 -461.36 0.05
12 0.2436 -4521.60 -0.03 -461.90 0.01
13 0.2954 -6059.66 -0.08 -571.38 0.22
14 0.3635 -7686.33 -0.05 -719.57 -0.01
15 0.3828 -8013.35 0.09 -761.62 0.05
16 0.4594 -8560.52 0.12 -928.83 0.01
17 0.4782 -8496.22 0.03 -969.62 0.02
18 1.0514 5443.69 0.12 -2133.70 0.02
19 1.1278 4336.58 -0.12 -2295.46 0.25
20 1.1333 4217.72 0.10 -2307.40 -0.02
21 1.1336 4211.72 0.03 -2308.02 -0.11
22 1.2098 2177.70 -0.00 -2469.32 0.01
23 1.3576 -1947.77 -0.01 -2768.72 0.06
24 1.4394 -2984.65 -0.01 -2922.95 -0.03
25 2.0725 10838.55 0.01 -4228.29 0.00
26 2.0864 10674.12 -0.03 -4261.68 -0.03
27 2.3157 4688.05 0.00 -4758.45 -0.00
28 2.3158 4685.20 -0.03 -4758.69 -0.06
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.
15VX167 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 39.020 39.031 39.010 ecceobj 0.051 0.052 0.051 incobj 20.046 20.046 20.046 qmin 36.096 36.022 36.155 qmax 41.579 41.742 41.510 amean 38.756 38.772 38.743 amin 38.468 38.486 38.453 amax 39.063 39.071 39.044 emean 0.050 0.051 0.049 emin 0.038 0.038 0.036 emax 0.066 0.069 0.064 imean 21.861 21.865 21.863 imin 20.826 20.820 20.824 imax 22.668 22.666 22.659 excite_mean 0.376 0.376 0.376 fracstop 1.000 1.000 1.000 cjmean 2.879 2.879 2.879 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 180.3 179.9 179.8 kozaiamp 180.0 179.9 180.0