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: 14XA48 # Created Sun Dec 22 02:10:13 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 30 observations of 30 # Arc: 5.86y # First observation: 2014/12/12 # Last observation: 2020/10/20 # Chi-squared of fit: 14.20 DOF: 54 RMS: 0.12 # Min/Max residuals: -0.22 0.48 # Exact a, adot, b, bdot, g, gdot: 1.605215E-05 2.454604E-02 2.562656E-06 4.005305E-03 2.438129E-02 3.758753E-03 # Covariance matrix: 3.2636E-13 -1.9582E-13 3.4652E-15 -2.0843E-14 -1.4178E-13 -1.0639E-12 -1.9582E-13 2.0026E-13 -1.4859E-14 2.3224E-14 5.4369E-14 1.2703E-12 3.4652E-15 -1.4859E-14 1.2318E-13 -3.8114E-14 9.2312E-15 -1.1110E-13 -2.0843E-14 2.3224E-14 -3.8114E-14 2.1336E-14 7.6179E-15 1.6184E-13 -1.4178E-13 5.4369E-14 9.2312E-15 7.6179E-15 1.5071E-13 3.0777E-13 -1.0639E-12 1.2703E-12 -1.1110E-13 1.6184E-13 3.0777E-13 8.9105E-12 # lat0 lon0 xBary yBary zBary JD0 -25.059330 13.893180 -0.897408 -0.170966 -0.366117 2457003.660428 # Heliocentric elements and errors Epoch: 2457004.5000 = 2014/12/13 Mean Anomaly: 46.77062 +/- 0.010 Argument of Peri: 223.46101 +/- 0.015 Long of Asc Node: 82.87345 +/- 0.001 Inclination: 26.57175 +/- 0.000 Eccentricity: 0.20253994 +/- 0.0001 Semi-Major Axis: 46.60777538 +/- 0.0045 Time of Perihelion: 2441905.2063 +/- 3.8 Perihelion: 37.16783924 +/- 0.0071 Aphelion: 56.04771152 +/- 0.0082 Period (y) 318.1968 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 36.24123805 +/- 0.0006 Ecliptic Y 9.89099370 +/- 0.0002 Ecliptic Z -17.37215975 +/- 0.0003 Ecliptic XDOT -0.00010984 +/- 0.0000 Ecliptic YDOT 0.00280815 +/- 0.0000 Ecliptic ZDOT 0.00022875 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.38890754 +/- 0.0005 Geocenter to KBO 41.01499473 +/- 0.0007 # Hcoef: 7.03
The following table shows the complete astrometric record for 14XA48. 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 (14XA48) followed by the observatory code and reference code for the source of the astrometry.
2014 12 12.15965 01 30 50.60 -17 34 58.3 23.2i 14XA48 W84 C~3cpY 2014 12 17.15251 01 30 39.667 -17 32 46.27 23.2r 14XA48 W84 C~4yVS 2015 01 12.07718 01 30 19.997 -17 16 40.28 23.3r 14XA48 W84 C~4yVS 2015 08 18.34592 01 43 22.036 -16 13 33.89 23.6r 14XA48 W84 C~4yVS 2015 08 18.34728 01 43 22.036 -16 13 34.18 23.4g 14XA48 W84 C~4yVS 2015 08 19.42115 01 43 20.062 -16 14 16.06 23.1i 14XA48 W84 C~4yVS 2015 08 23.40206 01 43 11.921 -16 16 53.79 23.3r 14XA48 W84 C~4yVS 2015 08 24.40244 01 43 09.676 -16 17 33.45 22.9r 14XA48 W84 C~4yVS 2015 10 22.23461 01 39 14.282 -16 49 56.40 23.1i 14XA48 W84 C~4yVS 2015 11 05.18590 01 38 07.403 -16 53 03.06 23.4i 14XA48 W84 C~4yVS 2015 11 07.13748 01 37 58.374 -16 53 16.93 23.0i 14XA48 W84 C~4yVS 2015 11 21.11674 01 36 58.015 -16 53 23.48 22.9z 14XA48 W84 C~4yVS 2015 12 01.12603 01 36 21.163 -16 51 46.06 23.1r 14XA48 W84 C~4yVS 2015 12 01.12740 01 36 21.179 -16 51 45.62 23.4i 14XA48 W84 C~4yVS 2015 12 01.12878 01 36 21.163 -16 51 46.10 23.5g 14XA48 W84 C~4yVS 2016 09 30.29974 01 45 48.914 -15 53 10.06 22.9i 14XA48 W84 C~4yVS 2016 09 30.30111 01 45 48.921 -15 53 09.93 23.3r 14XA48 W84 C~4yVS 2016 09 30.30247 01 45 48.899 -15 53 10.19 23.7g 14XA48 W84 C~4yVS 2016 10 02.22228 01 45 40.243 -15 54 09.86 23.2r 14XA48 W84 C~4yVS 2016 10 02.22364 01 45 40.241 -15 54 09.83 23.3i 14XA48 W84 C~4yVS 2017 11 09.20111 01 47 30.419 -15 18 37.96 23.0z 14XA48 W84 C~4yVS 2017 12 15.11022 01 45 19.628 -15 13 30.03 23.4g 14XA48 W84 C~4yVS 2017 12 22.13027 01 45 04.644 -15 10 29.58 23.5i 14XA48 W84 C~4yVS 2018 11 16.22913 01 51 45.140 -14 31 38.65 23.6i 14XA48 W84 C~4yVS 2018 11 17.10192 01 51 41.372 -14 31 39.79 23.0i 14XA48 W84 C~4yVS 2018 12 02.14266 01 50 42.480 -14 30 21.23 22.4r 14XA48 W84 C~4yVS 2018 12 03.05923 01 50 39.319 -14 30 10.66 23.1r 14XA48 W84 C~4yVS 2018 12 03.17738 01 50 38.911 -14 30 09.08 23.3g 14XA48 W84 C~4yVS 2020 10 20.274270 02 03 05.791 -12 51 13.68 23.0G 14XA48 G37 C~4Ky0 2020 10 20.327230 02 03 05.539 -12 51 14.77 14XA48 G37 C~4Ky0
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 -0.00
2 0.0137 0.00 -0.01 0.00 -0.06
3 0.0846 0.00 0.03 0.00 0.03
4 0.6822 0.00 0.18 0.00 0.03
5 0.6822 0.00 0.22 0.00 -0.21
6 0.6852 0.00 0.15 0.00 0.11
7 0.6961 0.00 -0.13 0.00 -0.14
8 0.6988 0.00 -0.12 0.00 -0.04
9 0.8599 0.00 0.07 0.00 0.16
10 0.8981 0.00 0.01 0.00 -0.15
11 0.9034 0.00 -0.03 0.00 -0.12
12 0.9417 0.00 -0.17 0.00 -0.22
13 0.9691 0.00 -0.09 0.00 0.06
14 0.9691 0.00 0.22 0.00 0.48
15 0.9691 0.00 0.05 0.00 -0.02
16 1.8019 0.00 -0.14 0.00 -0.02
17 1.8019 0.00 0.05 0.00 0.15
18 1.8019 0.00 -0.18 0.00 -0.06
19 1.8072 0.00 -0.03 0.00 0.03
20 1.8072 0.00 0.03 0.00 0.10
21 2.9104 0.00 -0.07 0.00 0.03
22 3.0088 0.00 -0.11 0.00 -0.01
23 3.0280 0.00 0.11 0.00 -0.10
24 3.9290 0.00 0.15 0.00 0.10
25 3.9314 0.00 -0.09 0.00 0.04
26 3.9726 0.00 -0.01 0.00 0.07
27 3.9751 0.00 -0.02 0.00 -0.08
28 3.9754 0.00 0.06 0.00 0.06
29 5.8566 0.00 0.01 0.00 -0.11
30 5.8567 0.00 0.06 0.00 -0.04
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.
14XA48 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 47.100 47.100 47.099 ecceobj 0.209 0.209 0.209 incobj 26.578 26.578 26.578 qmin 36.338 36.335 36.355 qmax 57.713 57.713 57.714 amean 46.815 46.814 46.814 amin 46.398 46.405 46.404 amax 47.293 47.293 47.294 emean 0.205 0.205 0.205 emin 0.189 0.189 0.189 emax 0.222 0.222 0.222 imean 25.054 25.055 25.054 imin 24.605 24.611 24.610 imax 25.490 25.498 25.482 excite_mean 0.470 0.470 0.470 fracstop 1.000 1.000 1.000 cjmean 2.855 2.855 2.855 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 186.8 186.8 186.7 kozaiamp 179.9 179.9 179.9