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: 15VR167 # Created Sun Dec 22 02:10:34 2024 # Orbit generated from Bernstein formalism # Fitting 32 observations of 33 # Arc: 2.35y # First observation: 2015/08/11 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000023 0.021570 -0.000041 0.005512 0.022553 0.000000 # Chi-squared of fit: 13.06 DOF: 58 RMS: 0.11 # Min/Max residuals: -0.41 0.32 # Exact a, adot, b, bdot, g, gdot: 1.602685E-05 2.091910E-02 3.808403E-06 5.290077E-03 2.204345E-02 -1.027330E-02 # Covariance matrix: 1.9024E-13 9.2609E-15 -4.9329E-15 2.6157E-14 1.3692E-13 2.1964E-12 9.2609E-15 2.9947E-13 -2.4741E-14 9.9059E-14 2.0303E-13 8.2058E-12 -4.9329E-15 -2.4741E-14 9.9049E-14 -7.3816E-14 -1.9328E-14 -9.2157E-13 2.6157E-14 9.9059E-14 -7.3816E-14 1.1885E-13 8.3875E-14 3.6509E-12 1.3692E-13 2.0303E-13 -1.9328E-14 8.3875E-14 2.5629E-13 6.9780E-12 2.1964E-12 8.2058E-12 -9.2157E-13 3.6509E-12 6.9780E-12 3.0226E-10 # lat0 lon0 xBary yBary zBary JD0 -1.560574 52.049436 1.013968 0.001825 0.062564 2457246.064839 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 333.81023 +/- 0.055 Argument of Peri: 75.87065 +/- 0.016 Long of Asc Node: 56.86636 +/- 0.000 Inclination: 14.40374 +/- 0.001 Eccentricity: 0.54868281 +/- 0.0009 Semi-Major Axis: 69.67811797 +/- 0.0947 Time of Perihelion: 2472695.6171 +/- 7.7 Perihelion: 31.44693261 +/- 0.0742 Aphelion: 107.90930333 +/- 0.1588 Period (y) 581.6381 +/- 1.19 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.64521530 +/- 0.0007 Ecliptic Y 35.08594058 +/- 0.0008 Ecliptic Z -1.23525291 +/- 0.0000 Ecliptic XDOT -0.00282425 +/- 0.0000 Ecliptic YDOT 0.00059983 +/- 0.0000 Ecliptic ZDOT 0.00069160 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.31111824 +/- 0.0008 Geocenter to KBO 45.36493985 +/- 0.0010 # Hcoef: 8.22
The following table shows the complete astrometric record for 15VR167. 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 (15VR167) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.56405 03 20 12.953 +16 46 18.57 24.6w 15VR167 568 C~2lVj 2015 09 07.63311 03 20 09.527 +16 46 32.37 25.1w 15VR167 568 C~2lVj 2015 09 12.50083 03 20 02.211 +16 46 09.74 24.9w 15VR167 568 C~2lVj 2015 10 07.54436 03 18 55.635 +16 42 32.95 25.1w 15VR167 568 C~2lVj 2015 10 07.60373 03 18 55.419 +16 42 32.26 25.0w 15VR167 568 C~2lVj 2015 10 09.58362 03 18 48.349 +16 42 08.91 24.8w 15VR167 568 C~2lVj 2015 11 07.33788 03 16 46.215 +16 35 27.62 24.6r 15VR167 568 C~2lVj 2015 11 07.38006 03 16 46.025 +16 35 27.10 24.9r 15VR167 568 C~2lVj 2015 11 07.42224 03 16 45.806 +16 35 26.37 24.6r 15VR167 568 C~2lVj 2015 11 10.50536 03 16 31.400 +16 34 39.74 24.8w 15VR167 568 C~2lVj 2015 11 17.35218 03 15 59.259 +16 32 56.94 25.1w 15VR167 568 C~2lVj 2015 11 17.39878 03 15 59.043 +16 32 56.25 24.9w 15VR167 568 C~2lVj 2015 12 06.36096 03 14 33.066 +16 28 30.84 25.0w 15VR167 568 C~2lVj 2015 12 06.49848 03 14 32.495 +16 28 28.65 24.7w 15VR167 568 C~2lVj 2016 01 01.34872 03 12 59.175 +16 24 16.87 24.9w 15VR167 568 C~2lVj 2016 01 07.41130 03 12 43.591 +16 23 44.89 25.4w 15VR167 568 C~2lVj 2016 01 07.42868 03 12 43.617 +16 23 44.68 25.0w 15VR167 568 C~2lVj 2016 01 08.25624 03 12 41.697 +16 23 41.36 25.4w 15VR167 568 C~2lVj 2016 02 05.28768 03 12 12.414 +16 24 08.14 25.0w 15VR167 568 C~2lVj 2016 02 10.30807 03 12 14.718 +16 24 43.40 25.2w 15VR167 568 C~2lVj 2016 09 07.62568 03 24 45.963 +17 23 00.53 15VR167 568 C~2lVj 2016 09 26.58416 03 24 06.858 +17 21 08.40 25.1w 15VR167 568 C~2lVj 2016 10 09.54522 03 23 24.781 +17 18 58.73 24.9w 15VR167 568 C~2lVj 2016 10 09.61729 03 23 24.514 +17 18 57.68 24.9w 15VR167 568 C~2lVj 2016 12 24.31334 03 17 55.464 +17 02 26.10 24.8w 15VR167 568 C~2lVj 2017 01 02.41556 03 17 27.167 +17 01 18.04 25.4w 15VR167 568 C~2lVj 2017 01 26.32908 03 16 44.469 +17 00 25.65 24.6w 15VR167 568 C~2lVj 2017 01 27.28684 03 16 43.816 +17 00 27.74 25.2w 15VR167 568 C~2lVj 2017 09 15.58856 03 29 19.252 +17 59 26.82 24.8w 15VR167 568 C~2lVj 2017 09 22.57478 03 29 04.289 +17 58 48.47 25.3w 15VR167 568 C~2lVj 2017 12 13.39064 03 23 20.608 +17 42 04.10 24.4w 15VR167 568 C~2lVj 2017 12 13.42791 03 23 20.451 +17 42 03.45 24.8w 15VR167 568 C~2lVj 2017 12 16.34929 03 23 08.478 +17 41 30.58 25.1w 15VR167 568 C~2lVj
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 -0.21 0.00 -0.00
2 0.0741 -44.04 -0.02 25.91 0.32
3 0.0874 -151.41 0.03 30.90 -0.05
4 0.1560 -1131.36 0.04 66.54 -0.06
5 0.1562 -1134.54 0.01 66.67 -0.04
6 0.1616 -1238.70 0.06 70.23 -0.01
7 0.2403 -3038.22 0.09 136.19 -0.03
8 0.2404 -3040.99 0.24 136.40 0.05
9 0.2405 -3044.22 -0.05 136.51 0.02
10 0.2490 -3256.37 0.00 145.29 -0.09
11 0.2677 -3729.45 -0.05 166.32 0.02
12 0.2679 -3732.63 0.04 166.47 -0.01
13 0.3198 -4996.05 -0.08 233.61 0.10
14 0.3201 -5004.55 0.18 233.65 -0.41
15 0.3909 -6367.09 0.01 344.28 0.02
16 0.4075 -6592.04 -0.32 372.73 0.19
17 0.4076 -6591.74 ( 0.59) 372.43 ( -0.20)
18 0.4098 -6619.29 0.16 376.54 0.02
19 0.4866 -7018.97 0.04 514.05 -0.02
20 0.5003 -6977.61 -0.18 539.27 0.16
21 1.0761 4344.62 0.11 1141.50 -0.03
22 1.1280 3774.31 -0.07 1173.02 -0.04
23 1.1635 3158.38 -0.04 1198.76 -0.00
24 1.1637 3154.42 -0.06 1198.71 -0.22
25 1.3710 -1658.49 -0.00 1442.02 -0.04
26 1.3959 -2068.17 -0.00 1481.24 0.02
27 1.4614 -2673.35 0.04 1589.49 -0.01
28 1.4640 -2681.85 0.03 1593.95 0.02
29 2.0973 8673.87 -0.06 2296.89 -0.02
30 2.1164 8457.10 0.03 2311.79 0.12
31 2.3404 3449.30 0.05 2554.91 0.15
32 2.3405 3446.96 0.02 2554.84 -0.07
33 2.3485 3273.04 -0.05 2566.09 -0.05
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.
15VR167 quality flag:2 Type: 7:2EEEEE SCATNEAR 7:2EEEEE axisobj 70.283 70.542 70.027 ecceobj 0.548 0.550 0.545 incobj 14.347 14.347 14.347 qmin 30.736 30.356 30.783 qmax 110.417 120.749 110.447 amean 69.408 69.719 69.408 amin 68.297 67.780 68.293 amax 70.961 75.963 70.994 emean 0.547 0.548 0.546 emin 0.536 0.525 0.535 emax 0.558 0.590 0.557 imean 13.153 13.384 13.144 imin 12.824 11.669 12.761 imax 13.502 15.601 13.503 excite_mean 0.592 0.595 0.591 fracstop 1.000 1.000 1.000 cjmean 2.910 2.907 2.911 libcent 0 179.3 -180.0 178.2 libamp 0 84.5 -180.0 91.0 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 162.3 172.4 166.1 kozaiamp 90.6 180.0 94.5