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: 15VR169
# Created Fri Nov 22 02:10:34 2024
# Orbit generated from Bernstein formalism
# Fitting 26 observations of 26
# Arc: 2.32y
# First observation: 2015/08/20
# Last observation: 2017/12/13
Preliminary a, adot, b, bdot, g, gdot:
-0.000097 0.016963 -0.000005 -0.005266 0.021008 0.000000
# Chi-squared of fit: 5.93 DOF: 46 RMS: 0.08
# Min/Max residuals: -0.23 0.33
# Exact a, adot, b, bdot, g, gdot:
1.266864E-05 1.676595E-02 -4.548518E-06 -5.213406E-03 2.083605E-02 1.966553E-03
# Covariance matrix:
2.3780E-13 4.0824E-14 1.0858E-14 -5.1958E-14 2.1584E-13 4.5749E-12
4.0824E-14 3.0861E-13 2.6281E-14 -1.2078E-13 2.5639E-13 1.0559E-11
1.0858E-14 2.6281E-14 1.0845E-13 -8.4303E-14 2.8637E-14 1.3312E-12
-5.1958E-14 -1.2078E-13 -8.4303E-14 1.6505E-13 -1.3387E-13 -6.0945E-12
2.1584E-13 2.5639E-13 2.8637E-14 -1.3387E-13 4.0039E-13 1.1739E-11
4.5749E-12 1.0559E-11 1.3312E-12 -6.0945E-12 1.1739E-11 5.3243E-10
# lat0 lon0 xBary yBary zBary JD0
0.417238 54.956044 1.013875 0.000410 -0.038431 2457255.041279
# Heliocentric elements and errors
Epoch: 2457250.5000 = 2015/08/16
Mean Anomaly: 140.23718 +/- 0.378
Argument of Peri: 28.53601 +/- 0.371
Long of Asc Node: 235.09267 +/- 0.000
Inclination: 17.24629 +/- 0.001
Eccentricity: 0.15453339 +/- 0.0005
Semi-Major Axis: 42.62524143 +/- 0.0083
Time of Perihelion: 2417653.7640 +/- 106.1
Perihelion: 36.03821853 +/- 0.0240
Aphelion: 49.21226434 +/- 0.0249
Period (y) 278.2970 +/- 0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 28.40561077 +/- 0.0009
Ecliptic Y 38.74113271 +/- 0.0012
Ecliptic Z 0.34930249 +/- 0.0000
Ecliptic XDOT -0.00165441 +/- 0.0000
Ecliptic YDOT 0.00147426 +/- 0.0000
Ecliptic ZDOT -0.00068308 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 48.04035907 +/- 0.0011
Geocenter to KBO 47.99375135 +/- 0.0015
# Hcoef: 7.98
The following table shows the complete astrometric record for 15VR169. 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 (15VR169) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.54049 03 29 59.454 +19 24 38.55 24.7w 15VR169 568 C~2nw2 2015 09 07.59637 03 29 53.848 +19 23 33.34 25.4w 15VR169 568 C~2nw2 2015 09 12.44325 03 29 47.748 +19 22 59.22 25.5w 15VR169 568 C~2nw2 2015 10 07.49180 03 28 47.878 +19 18 20.67 25.1w 15VR169 568 C~2nw2 2015 10 07.55020 03 28 47.681 +19 18 19.65 25.0w 15VR169 568 C~2nw2 2015 10 09.53094 03 28 41.161 +19 17 51.02 24.9w 15VR169 568 C~2nw2 2015 11 06.30734 03 26 50.782 +19 09 55.51 24.5r 15VR169 568 C~2nw2 2015 11 06.37060 03 26 50.536 +19 09 54.35 24.8r 15VR169 568 C~2nw2 2015 11 06.44142 03 26 50.188 +19 09 53.08 24.9r 15VR169 568 C~2nw2 2015 11 07.46098 03 26 45.685 +19 09 33.76 24.8w 15VR169 568 C~2nw3 2015 11 17.44217 03 26 00.979 +19 06 21.68 25.0w 15VR169 568 C~2nw3 2015 11 17.48946 03 26 00.782 +19 06 20.53 24.4w 15VR169 568 C~2nw3 2015 12 06.30809 03 24 38.302 +19 00 20.83 25.2w 15VR169 568 C~2nw3 2015 12 06.43481 03 24 37.769 +19 00 18.41 24.9w 15VR169 568 C~2nw3 2015 12 31.32982 03 23 07.987 +18 53 26.05 25.2w 15VR169 568 C~2nw3 2016 01 07.35914 03 22 49.305 +18 51 53.11 25.3w 15VR169 568 C~2nw3 2016 02 11.25843 03 22 15.201 +18 47 47.59 24.9w 15VR169 568 C~2nw3 2016 09 27.54346 03 33 32.818 +19 16 45.60 24.6w 15VR169 568 C~2nw3 2016 11 02.46775 03 31 23.861 +19 07 28.37 15VR169 568 C~2nw3 2016 12 24.36175 03 27 45.647 +18 51 53.85 25.2w 15VR169 568 C~2nw3 2016 12 29.39711 03 27 29.488 +18 50 40.24 25.4w 15VR169 568 C~2nw3 2017 01 27.33784 03 26 32.104 +18 45 44.78 25.3w 15VR169 568 C~2nw3 2017 09 15.55809 03 38 14.415 +19 14 51.31 25.0w 15VR169 568 C~2nw3 2017 09 20.60688 03 38 05.419 +19 14 04.60 24.9w 15VR169 568 C~2nw3 2017 12 13.36234 03 32 44.629 +18 51 24.65 24.7w 15VR169 568 C~2nw3 2017 12 13.40466 03 32 44.450 +18 51 23.91 25.0w 15VR169 568 C~2nw3
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 0.12
2 0.0494 -92.75 -0.04 -44.05 0.04
3 0.0627 -184.76 0.06 -56.24 -0.07
4 0.1313 -1074.42 0.01 -120.40 0.13
5 0.1314 -1077.37 -0.08 -120.71 -0.04
6 0.1369 -1173.87 0.03 -125.96 -0.01
7 0.2129 -2806.20 -0.18 -203.50 0.01
8 0.2131 -2809.86 0.33 -203.77 -0.10
9 0.2133 -2814.96 -0.07 -203.78 0.07
10 0.2161 -2881.57 0.01 -206.77 0.04
11 0.2434 -3543.09 -0.13 -236.29 0.06
12 0.2435 -3546.09 0.07 -236.71 -0.23
13 0.2951 -4768.70 -0.01 -294.34 0.04
14 0.2954 -4776.63 0.04 -294.80 -0.05
15 0.3636 -6114.03 -0.13 -374.77 0.01
16 0.3828 -6394.30 0.06 -397.94 -0.10
17 0.4784 -6925.34 0.07 -513.34 0.06
18 1.1061 2818.60 -0.00 -1183.01 -0.02
19 1.2045 911.46 0.05 -1288.05 0.07
20 1.3465 -2317.97 -0.07 -1443.39 0.02
21 1.3603 -2558.44 -0.02 -1458.46 -0.01
22 1.4396 -3421.14 -0.04 -1544.19 -0.05
23 2.0726 6671.11 -0.03 -2227.49 0.04
24 2.0864 6536.23 -0.02 -2243.53 -0.00
25 2.3157 1793.28 0.10 -2498.05 -0.01
26 2.3158 1790.63 -0.01 -2498.16 -0.01
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.
15VR169 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.980 43.007 42.955 ecceobj 0.151 0.152 0.149 incobj 17.172 17.172 17.172 qmin 34.979 34.964 35.062 qmax 50.689 50.752 50.649 amean 42.674 42.710 42.686 amin 42.286 42.315 42.314 amax 43.092 43.127 43.128 emean 0.158 0.159 0.156 emin 0.139 0.139 0.138 emax 0.178 0.178 0.177 imean 18.404 18.425 18.458 imin 17.613 17.669 17.720 imax 19.133 19.160 19.187 excite_mean 0.353 0.354 0.353 fracstop 1.000 1.000 1.000 cjmean 2.936 2.936 2.936 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 175.9 177.6 178.8 kozaiamp 179.9 179.9 180.0