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: 15VV170
# Created Wed Apr 30 01:10:42 2025
# Orbit generated from Bernstein formalism
# Fitting 32 observations of 33
# Arc: 2.02y
# First observation: 2015/09/07
# Last observation: 2017/09/15
Preliminary a, adot, b, bdot, g, gdot:
-0.000081 0.022618 0.000001 0.000335 0.023515 0.000000
# Chi-squared of fit: 8.04 DOF: 58 RMS: 0.09
# Min/Max residuals: -0.17 0.29
# Exact a, adot, b, bdot, g, gdot:
1.499703E-05 2.244927E-02 5.172580E-07 3.337858E-04 2.343043E-02 1.134846E-03
# Covariance matrix:
2.2732E-13 -4.7326E-14 -6.9416E-16 1.8848E-15 1.6787E-13 3.2957E-12
-4.7326E-14 3.1563E-13 -1.1689E-15 4.7744E-15 1.5572E-13 8.4382E-12
-6.9416E-16 -1.1689E-15 1.1375E-13 -1.0306E-13 -1.4815E-15 -6.2481E-14
1.8848E-15 4.7744E-15 -1.0306E-13 1.5497E-13 4.9026E-15 2.5145E-13
1.6787E-13 1.5572E-13 -1.4815E-15 4.9026E-15 2.8848E-13 8.6220E-12
3.2957E-12 8.4382E-12 -6.2481E-14 2.5145E-13 8.6220E-12 4.4427E-10
# lat0 lon0 xBary yBary zBary JD0
0.311585 52.049985 0.934035 0.002253 -0.387037 2457273.129809
# Heliocentric elements and errors
Epoch: 2457270.5000 = 2015/09/05
Mean Anomaly: 83.50579 +/- 0.121
Argument of Peri: 293.17516 +/- 0.145
Long of Asc Node: 31.07698 +/- 0.022
Inclination: 0.91437 +/- 0.001
Eccentricity: 0.02667117 +/- 0.0009
Semi-Major Axis: 43.17356083 +/- 0.0039
Time of Perihelion: 2433235.7655 +/- 34.6
Perihelion: 42.02207165 +/- 0.0407
Aphelion: 44.32505001 +/- 0.0407
Period (y) 283.6841 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 27.21688803 +/- 0.0006
Ecliptic Y 33.38491067 +/- 0.0008
Ecliptic Z 0.23212753 +/- 0.0000
Ecliptic XDOT -0.00198897 +/- 0.0000
Ecliptic YDOT 0.00171118 +/- 0.0000
Ecliptic ZDOT 0.00003978 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.07394964 +/- 0.0007
Geocenter to KBO 42.67954717 +/- 0.0010
# Hcoef: 8.79
The following table shows the complete astrometric record for 15VV170. 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 (15VV170) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.62902 03 18 11.996 +18 34 52.90 25.1w 15VV170 568 C~2nw7 2015 09 12.49264 03 18 04.313 +18 34 26.59 25.1w 15VV170 568 C~2nw7 2015 10 07.53854 03 16 54.367 +18 30 14.00 26.1w 15VV170 568 C~2nw7 2015 10 07.59790 03 16 54.142 +18 30 13.23 25.9w 15VV170 568 C~2nw7 2015 10 09.57780 03 16 46.705 +18 29 45.61 25.2w 15VV170 568 C~2nw7 2015 11 07.33264 03 14 38.667 +18 21 42.80 25.1r 15VV170 568 C~2nw7 2015 11 07.37479 03 14 38.459 +18 21 42.02 25.1r 15VV170 568 C~2nw7 2015 11 07.41697 03 14 38.242 +18 21 41.23 24.7r 15VV170 568 C~2nw7 2015 11 10.49950 03 14 23.168 +18 20 43.70 24.7w 15VV170 568 C~2nw7 2015 11 17.34635 03 13 49.626 +18 18 34.45 25.0w 15VV170 568 C~2nw7 2015 11 17.39294 03 13 49.399 +18 18 33.66 25.5w 15VV170 568 C~2nw7 2015 12 06.35508 03 12 20.006 +18 12 45.53 24.8w 15VV170 568 C~2nw7 2015 12 06.49265 03 12 19.394 +18 12 43.27 25.7w 15VV170 568 C~2nw7 2016 01 01.34294 03 10 43.536 +18 06 22.60 24.9w 15VV170 568 C~2nw7 2016 01 07.40549 03 10 27.837 +18 05 18.99 25.1w 15VV170 568 C~2nw7 2016 01 08.25043 03 10 25.903 +18 05 11.20 25.5w 15VV170 568 C~2nw7 2016 02 05.28189 03 09 58.668 +18 03 15.80 25.6w 15VV170 568 C~2nw7 2016 02 10.30227 03 10 01.749 +18 03 26.74 25.1w 15VV170 568 C~2nw7 2016 09 07.57363 03 23 24.388 +18 55 32.47 25.4w 15VV170 568 C~2nw7 2016 09 27.51061 03 22 41.088 +18 53 05.02 25.8w 15VV170 568 C~2nw7 2016 09 29.48481 03 22 35.080 +18 52 43.78 25.1w 15VV170 568 C~2nw7 2016 10 05.48792 03 22 15.061 +18 51 33.15 24.8w 15VV170 568 C~2nw7 2016 10 07.49247 03 22 07.813 +18 51 07.34 25.7w 15VV170 568 C~2nw7 2016 10 07.58817 03 22 07.456 +18 51 06.08 25.5w 15VV170 568 C~2nw7 2016 10 09.49252 03 22 00.357 +18 50 40.58 25.9w 15VV170 568 C~2nw7 2016 10 09.56525 03 22 00.072 +18 50 39.50 25.4w 15VV170 568 C~2nw7 2016 11 02.53154 03 20 15.270 +18 44 18.04 25.6w 15VV170 568 C~2nw7 2016 11 04.40663 03 20 06.238 +18 43 44.68 25.4w 15VV170 568 C~2nw7 2016 12 24.30698 03 16 20.557 +18 29 30.84 25.5w 15VV170 568 C~2nw7 2016 12 24.32550 03 16 20.489 +18 29 30.44 26.0w 15VV170 568 C~2nw7 2017 01 02.40920 03 15 51.884 +18 27 39.00 25.2w 15VV170 568 C~2nw7 2017 01 02.42780 03 15 51.849 +18 27 38.83 25.1w 15VV170 568 C~2nw7 2017 09 15.56413 03 28 26.186 +19 15 01.39 25.3w 15VV170 568 C~2nw7
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 0.03 0.00 -0.06
2 0.0133 -112.33 -0.17 2.78 -0.14
3 0.0819 -1138.56 0.04 16.48 0.02
4 0.0821 -1141.85 0.04 16.57 0.07
5 0.0875 -1251.19 -0.08 17.39 -0.04
6 0.1662 -3136.35 0.07 27.67 -0.08
7 0.1663 -3139.41 0.08 27.69 -0.08
8 0.1664 -3142.60 -0.04 27.74 -0.06
9 0.1749 -3364.84 -0.15 28.68 0.11
10 0.1936 -3859.78 -0.02 29.87 -0.00
11 0.1937 -3863.10 0.07 29.96 0.06
12 0.2457 -5183.84 -0.06 31.57 -0.00
13 0.2460 -5192.85 0.09 31.71 0.11
14 0.3168 -6612.31 0.01 29.55 0.08
15 0.3334 -6845.25 -0.03 28.30 -0.10
16 0.3357 -6873.94 -0.04 28.19 -0.02
17 0.4125 -7279.52 ( 0.53) 21.37 ( 0.06)
18 0.4262 -7234.20 0.10 20.09 0.18
19 1.0019 4607.23 -0.08 69.25 -0.11
20 1.0565 3975.16 -0.13 81.08 -0.03
21 1.0619 3887.26 0.05 82.02 -0.16
22 1.0783 3594.38 0.29 85.39 0.08
23 1.0838 3488.28 0.01 86.41 0.11
24 1.0841 3483.06 0.05 86.47 0.10
25 1.0893 3379.08 0.09 87.28 0.02
26 1.0895 3374.90 0.03 87.26 -0.05
27 1.1551 1838.32 0.03 96.51 -0.01
28 1.1602 1705.75 -0.10 97.02 0.01
29 1.2969 -1614.20 -0.05 99.95 0.06
30 1.2969 -1615.24 -0.11 99.81 -0.08
31 1.3218 -2037.21 -0.12 98.40 0.05
32 1.3218 -2037.73 0.14 98.37 0.02
33 2.0231 9046.52 -0.05 142.85 -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.
15VV170 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.595 43.610 43.580 ecceobj 0.033 0.035 0.032 incobj 0.911 0.910 0.911 qmin 41.122 41.041 41.183 qmax 45.579 45.685 45.488 amean 43.269 43.283 43.254 amin 42.943 42.946 42.918 amax 43.610 43.629 43.587 emean 0.029 0.031 0.028 emin 0.009 0.011 0.008 emax 0.046 0.047 0.044 imean 1.575 1.574 1.576 imin 0.604 0.606 0.600 imax 2.289 2.290 2.290 excite_mean 0.040 0.042 0.039 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.091 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 196.1 197.4 195.2 kozaiamp 180.0 180.0 180.0