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: 15KY175
# Created Wed May 8 01:17:11 2024
# Orbit generated from Bernstein formalism
# Fitting 39 observations of 39
# Arc: 2.25y
# First observation: 2015/02/23
# Last observation: 2017/05/25
Preliminary a, adot, b, bdot, g, gdot:
-0.000152 0.023203 0.000005 0.002427 0.023692 0.000000
# Chi-squared of fit: 11.98 DOF: 72 RMS: 0.10
# Min/Max residuals: -0.20 0.31
# Exact a, adot, b, bdot, g, gdot:
1.585825E-05 2.276378E-02 2.053030E-06 2.381555E-03 2.339917E-02 -2.203694E-04
# Covariance matrix:
1.8137E-13 -6.3081E-14 -6.7541E-15 6.9161E-16 1.1638E-13 1.4917E-13
-6.3081E-14 3.3100E-13 -2.0485E-14 5.3491E-14 1.4145E-13 8.0265E-12
-6.7541E-15 -2.0485E-14 9.0150E-14 -6.4727E-14 -1.9928E-14 -6.4915E-13
6.9161E-16 5.3491E-14 -6.4727E-14 8.1805E-14 3.0641E-14 1.6531E-12
1.1638E-13 1.4145E-13 -1.9928E-14 3.0641E-14 2.2566E-13 4.6551E-12
1.4917E-13 8.0265E-12 -6.4915E-13 1.6531E-12 4.6551E-12 2.4816E-10
# lat0 lon0 xBary yBary zBary JD0
4.703655 -121.797297 0.980677 0.008877 -0.106323 2457077.120318
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 323.88626 +/- 0.598
Argument of Peri: 77.35284 +/- 0.677
Long of Asc Node: 199.33886 +/- 0.003
Inclination: 7.66857 +/- 0.001
Eccentricity: 0.04885811 +/- 0.0004
Semi-Major Axis: 44.57598213 +/- 0.0034
Time of Perihelion: 2467975.3509 +/- 180.5
Perihelion: 42.39808406 +/- 0.0192
Aphelion: 46.75388021 +/- 0.0193
Period (y) 297.6183 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -23.33490231 +/- 0.0005
Ecliptic Y -35.77395606 +/- 0.0007
Ecliptic Z 3.50458819 +/- 0.0001
Ecliptic XDOT 0.00228574 +/- 0.0000
Ecliptic YDOT -0.00136779 +/- 0.0000
Ecliptic ZDOT 0.00027570 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.85528831 +/- 0.0007
Geocenter to KBO 42.73655995 +/- 0.0009
# Hcoef: 7.97
The following table shows the complete astrometric record for 15KY175. 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 (15KY175) followed by the observatory code and reference code for the source of the astrometry.
2015 02 23.61954 15 48 08.769 -15 10 16.25 24.2r 15KY175 568 C~2nvj 2015 03 19.57896 15 47 52.076 -15 06 08.01 24.4r 15KY175 568 C~2nvj 2015 03 21.63764 15 47 48.179 -15 05 40.06 25.0r 15KY175 568 C~2nvj 2015 04 12.49631 15 46 46.507 -14 59 54.22 24.4r 15KY175 568 C~2nvj 2015 04 12.53727 15 46 46.349 -14 59 53.40 24.2r 15KY175 568 C~2nvj 2015 04 18.51897 15 46 23.888 -14 58 07.67 24.5r 15KY175 568 C~2nvj 2015 05 17.39179 15 44 15.817 -14 49 27.40 24.7r 15KY175 568 C~2nvj 2015 05 17.43344 15 44 15.618 -14 49 26.58 24.3r 15KY175 568 C~2nvj 2015 05 17.48044 15 44 15.411 -14 49 25.74 23.2r 15KY175 568 C~2nvj 2015 05 17.48543 15 44 15.380 -14 49 25.87 22.8r 15KY175 568 C~2nvj 2015 05 17.51054 15 44 15.259 -14 49 25.21 23.9r 15KY175 568 C~2nvj 2015 05 24.37741 15 43 42.802 -14 47 28.97 24.3r 15KY175 568 C~2nvj 2015 05 24.42349 15 43 42.584 -14 47 28.23 24.0r 15KY175 568 C~2nvj 2015 05 24.46441 15 43 42.386 -14 47 27.48 24.2r 15KY175 568 C~2nvj 2015 05 26.45236 15 43 33.039 -14 46 55.03 24.0r 15KY175 568 C~2nvj 2015 06 18.35156 15 41 51.893 -14 41 35.07 24.2r 15KY175 568 C~2nvj 2015 06 18.39254 15 41 51.730 -14 41 34.63 24.4r 15KY175 568 C~2nvj 2015 06 21.36717 15 41 40.033 -14 41 02.05 24.5r 15KY175 568 C~2nvj 2015 07 18.32574 15 40 18.807 -14 38 05.06 24.5r 15KY175 568 C~2nvj 2016 02 06.65744 15 53 08.927 -15 20 14.12 25.0w 15KY175 568 C~2nvj 2016 02 12.64299 15 53 20.649 -15 20 00.32 24.6w 15KY175 568 C~2nvj 2016 03 17.62613 15 53 21.469 -15 15 17.52 24.9w 15KY175 568 C~2nvj 2016 04 03.56687 15 52 42.675 -15 11 12.24 24.5w 15KY175 568 C~2nvj 2016 04 08.61643 15 52 26.824 -15 09 50.19 23.5w 15KY175 568 C~2nvj 2016 04 09.56037 15 52 23.694 -15 09 34.37 24.4w 15KY175 568 C~2nvj 2016 04 09.57656 15 52 23.625 -15 09 34.03 24.4w 15KY175 568 C~2nvj 2016 04 29.52576 15 51 05.374 -15 03 46.30 24.2w 15KY175 568 C~2nvj 2016 04 29.52981 15 51 05.363 -15 03 46.30 24.1w 15KY175 568 C~2nvj 2016 05 04.49833 15 50 43.210 -15 02 17.94 24.4w 15KY175 568 C~2nvj 2016 05 04.50238 15 50 43.193 -15 02 17.90 24.4w 15KY175 568 C~2nvj 2016 05 30.44581 15 48 41.551 -14 55 05.39 24.6w 15KY175 568 C~2nvj 2016 07 04.32652 15 46 20.655 -14 48 37.41 24.2w 15KY175 568 C~2nvj 2016 07 05.39888 15 46 17.360 -14 48 30.45 24.6w 15KY175 568 C~2nvj 2017 04 03.61140 15 58 13.438 -15 19 47.33 25.3w 15KY175 568 C~2nvj 2017 04 03.61609 15 58 13.421 -15 19 47.05 25.1w 15KY175 568 C~2nvj 2017 04 04.49990 15 58 10.886 -15 19 33.28 24.7w 15KY175 568 C~2nvj 2017 05 21.54752 15 54 56.796 -15 06 22.78 24.2w 15KY175 568 C~2nvj 2017 05 21.56169 15 54 56.707 -15 06 22.48 24.6w 15KY175 568 C~2nvj 2017 05 25.53328 15 54 37.824 -15 05 20.08 24.3w 15KY175 568 C~2nvj
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 -0.10 0.00 -0.09
2 0.0656 -289.88 0.02 189.78 0.13
3 0.0712 -351.04 -0.03 204.79 -0.05
4 0.1311 -1298.35 0.27 347.45 -0.18
5 0.1312 -1300.76 0.14 347.75 -0.10
6 0.1476 -1641.49 -0.03 379.67 0.02
7 0.2266 -3567.32 -0.15 478.27 -0.13
8 0.2267 -3570.32 -0.15 478.43 -0.03
9 0.2269 -3573.43 0.11 478.58 0.05
10 0.2269 -3573.84 0.06 478.35 -0.18
11 0.2269 -3575.70 0.01 478.61 0.03
12 0.2457 -4060.61 -0.01 487.59 0.03
13 0.2459 -4063.86 0.04 487.61 0.02
14 0.2460 -4066.83 -0.00 487.71 0.08
15 0.2514 -4206.27 -0.01 489.24 0.09
16 0.3141 -5708.82 -0.08 473.76 0.06
17 0.3142 -5711.23 -0.00 473.66 0.05
18 0.3224 -5884.07 -0.03 467.37 -0.01
19 0.3962 -7073.57 0.01 374.60 -0.01
20 0.9529 4371.58 -0.03 347.23 0.15
21 0.9693 4534.47 -0.02 396.58 0.05
22 1.0623 4486.29 -0.00 675.57 -0.04
23 1.1087 3885.35 0.04 796.43 -0.00
24 1.1225 3643.60 -0.11 827.90 -0.16
25 1.1251 3595.95 0.12 833.74 0.01
26 1.1251 3594.90 -0.07 833.86 0.04
27 1.1798 2413.38 -0.09 932.02 0.04
28 1.1798 2413.22 0.03 931.99 -0.01
29 1.1934 2080.81 -0.08 949.59 0.07
30 1.1934 2080.56 -0.05 949.57 0.04
31 1.2644 266.05 -0.04 992.17 0.00
32 1.3599 -1812.20 -0.11 925.83 0.02
33 1.3628 -1860.35 0.29 922.15 0.31
34 2.1081 8678.61 0.07 1293.58 -0.20
35 2.1081 8678.31 -0.02 1293.81 -0.01
36 2.1106 8639.52 0.06 1299.73 0.04
37 2.2394 5723.68 0.19 1489.13 -0.04
38 2.2394 5722.35 -0.12 1489.15 -0.03
39 2.2503 5441.67 -0.10 1492.77 -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.
15KY175 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.248 44.258 44.239 ecceobj 0.047 0.047 0.047 incobj 7.702 7.702 7.702 qmin 41.768 41.805 41.733 qmax 47.628 47.584 47.557 amean 44.577 44.588 44.554 amin 44.225 44.240 44.211 amax 44.935 44.947 44.929 emean 0.046 0.046 0.045 emin 0.033 0.034 0.029 emax 0.060 0.059 0.059 imean 8.365 8.364 8.373 imin 7.854 7.855 7.851 imax 8.797 8.798 8.807 excite_mean 0.153 0.153 0.152 fracstop 1.000 1.000 1.000 cjmean 3.080 3.080 3.080 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 177.0 177.2 176.8 kozaiamp 179.9 180.0 180.0