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: 15KF174
# Created Fri Nov 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 24 observations of 24
# Arc: 2.03y
# First observation: 2015/03/19
# Last observation: 2017/03/28
Preliminary a, adot, b, bdot, g, gdot:
-0.000218 0.046956 0.000025 0.003155 0.034007 0.000000
# Chi-squared of fit: 5.42 DOF: 42 RMS: 0.08
# Min/Max residuals: -0.23 0.24
# Exact a, adot, b, bdot, g, gdot:
2.059594E-05 4.685788E-02 1.358550E-06 3.162711E-03 3.403633E-02 5.676007E-03
# Covariance matrix:
2.3795E-13 -6.5248E-14 -7.1411E-15 6.5534E-15 1.6401E-13 9.1940E-13
-6.5248E-14 7.3646E-13 -1.7960E-14 6.0080E-14 2.6156E-13 9.7439E-12
-7.1411E-15 -1.7960E-14 1.2271E-13 -1.1201E-13 -1.5868E-14 -3.3014E-13
6.5534E-15 6.0080E-14 -1.1201E-13 2.0391E-13 3.1134E-14 1.0871E-12
1.6401E-13 2.6156E-13 -1.5868E-14 3.1134E-14 3.0707E-13 4.8678E-12
9.1940E-13 9.7439E-12 -3.3014E-13 1.0871E-12 4.8678E-12 1.7617E-10
# lat0 lon0 xBary yBary zBary JD0
8.143444 -124.067224 0.836270 0.075817 -0.529028 2457101.141658
# Heliocentric elements and errors
Epoch: 2457100.5000 = 2015/03/19
Mean Anomaly: 5.35897 +/- 0.014
Argument of Peri: 46.31703 +/- 0.047
Long of Asc Node: 171.45954 +/- 0.003
Inclination: 8.96967 +/- 0.000
Eccentricity: 0.47245856 +/- 0.0002
Semi-Major Axis: 55.94235444 +/- 0.0119
Time of Perihelion: 2454825.4637 +/- 6.0
Perihelion: 29.51190994 +/- 0.0105
Aphelion: 82.37279894 +/- 0.0195
Period (y) 418.4266 +/- 0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -17.28665615 +/- 0.0003
Ecliptic Y -24.06690044 +/- 0.0004
Ecliptic Z 4.16185395 +/- 0.0001
Ecliptic XDOT 0.00288594 +/- 0.0000
Ecliptic YDOT -0.00246171 +/- 0.0000
Ecliptic ZDOT 0.00031660 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 29.92265373 +/- 0.0003
Geocenter to KBO 29.38037480 +/- 0.0005
# Hcoef: 10.02
The following table shows the complete astrometric record for 15KF174. 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 (15KF174) followed by the observatory code and reference code for the source of the astrometry.
2015 03 19.64088 15 42 14.932 -11 18 58.73 24.3r 15KF174 568 C~2lVI 2015 03 22.56046 15 42 07.963 -11 17 46.28 25.1r 15KF174 568 C~2lVI 2015 03 22.62952 15 42 07.762 -11 17 44.38 25.1r 15KF174 568 C~2lVI 2015 04 13.57241 15 40 45.788 -11 07 49.50 24.8r 15KF174 568 C~2lVI 2015 04 13.61353 15 40 45.600 -11 07 48.44 24.9r 15KF174 568 C~2lVI 2015 05 21.34311 15 37 08.242 -10 51 07.25 24.8r 15KF174 568 C~2lVI 2015 05 21.38417 15 37 07.978 -10 51 06.40 24.9r 15KF174 568 C~2lVI 2015 05 21.42550 15 37 07.718 -10 51 05.34 24.7r 15KF174 568 C~2lVJ 2015 05 22.49770 15 37 01.088 -10 50 41.54 24.7r 15KF174 568 C~2lVJ 2015 05 25.48844 15 36 42.690 -10 49 36.82 24.7r 15KF174 568 C~2lVJ 2015 06 20.37754 15 34 17.094 -10 42 50.87 24.2r 15KF174 568 C~2lVJ 2015 06 20.41847 15 34 16.887 -10 42 50.50 24.7r 15KF174 568 C~2lVJ 2015 06 23.43876 15 34 02.508 -10 42 23.87 24.7r 15KF174 568 C~2lVJ 2015 07 11.32142 15 32 54.191 -10 41 26.01 24.4r 15KF174 568 C~2lVJ 2015 07 12.30139 15 32 51.360 -10 41 27.81 24.9r 15KF174 568 C~2lVJ 2016 02 12.63086 15 52 47.396 -11 54 15.59 24.9w 15KF174 568 C~2lVJ 2016 04 03.55879 15 52 18.516 -11 37 39.37 25.2w 15KF174 568 C~2lVJ 2016 04 08.60833 15 51 58.625 -11 35 25.58 25.4w 15KF174 568 C~2lVJ 2016 04 29.50547 15 50 13.820 -11 26 04.75 24.6w 15KF174 568 C~2lVJ 2016 05 04.47810 15 49 44.920 -11 23 55.84 24.5w 15KF174 568 C~2lVJ 2016 05 30.45392 15 47 05.764 -11 14 15.86 24.9w 15KF174 568 C~2lVJ 2016 07 04.31437 15 44 05.721 -11 08 08.35 25.5w 15KF174 568 C~2lVJ 2016 07 05.38672 15 44 01.629 -11 08 06.38 25.2w 15KF174 568 C~2lVJ 2017 03 28.61692 16 03 24.685 -12 03 54.95 25.3w 15KF174 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 0.24 0.00 0.02
2 0.0080 -116.29 0.03 47.26 -0.02
3 0.0082 -119.60 -0.23 48.43 0.09
4 0.0683 -1429.60 -0.13 352.78 -0.05
5 0.0684 -1432.53 0.08 353.18 -0.12
6 0.1717 -4778.39 0.04 591.67 -0.01
7 0.1718 -4782.38 -0.03 591.60 -0.09
8 0.1719 -4786.35 -0.05 591.74 0.04
9 0.1748 -4886.94 0.02 592.29 -0.08
10 0.1830 -5165.77 -0.06 592.48 -0.01
11 0.2539 -7348.83 0.10 488.01 0.10
12 0.2540 -7351.89 0.06 487.65 0.06
13 0.2623 -7564.45 -0.07 463.99 0.04
14 0.3112 -8558.42 0.11 284.15 0.07
15 0.3139 -8598.63 -0.13 272.60 0.10
16 0.9035 9537.61 -0.06 6.47 0.02
17 1.0429 8904.89 -0.02 886.83 0.00
18 1.0567 8589.87 0.06 953.44 -0.16
19 1.1139 6961.51 0.12 1161.99 -0.11
20 1.1275 6518.14 -0.05 1193.89 0.01
21 1.1987 4105.21 -0.01 1239.34 -0.01
22 1.2941 1440.43 0.03 1002.66 -0.03
23 1.2970 1381.31 -0.06 990.99 0.06
24 2.0259 18842.11 -0.01 1442.63 0.09
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.
15KF174 quality flag:3 Type: 5:2EEE 5:2EEE 5:2EEE axisobj 55.107 55.164 55.049 ecceobj 0.464 0.465 0.464 incobj 8.992 8.992 8.992 qmin 28.931 28.979 28.942 qmax 83.951 83.884 83.514 amean 55.463 55.463 55.462 amin 54.578 54.521 54.665 amax 56.719 56.694 56.527 emean 0.468 0.467 0.468 emin 0.456 0.457 0.457 emax 0.480 0.480 0.478 imean 8.510 8.528 8.458 imin 8.252 8.259 8.260 imax 8.759 8.845 8.623 excite_mean 0.491 0.490 0.490 fracstop 1.000 1.000 1.000 cjmean 2.916 2.916 2.916 libcent 0 181.0 180.0 180.5 libamp 0 140.9 145.9 109.4 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 167.0 178.4 155.6 kozaiamp 180.0 180.0 179.9