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: 14WY555 # Created Tue Jan 21 02:10:23 2025 # Orbit generated from Bernstein formalism # Fitting 22 observations of 22 # Arc: 4.00y # First observation: 2014/11/16 # Last observation: 2018/11/17 Preliminary a, adot, b, bdot, g, gdot: 0.000377 0.025847 -0.000078 -0.003449 0.025216 0.000000 # Chi-squared of fit: 5.17 DOF: 38 RMS: 0.09 # Min/Max residuals: -0.19 0.25 # Exact a, adot, b, bdot, g, gdot: 1.620986E-05 2.654051E-02 -2.216265E-06 -3.491967E-03 2.491805E-02 6.692248E-03 # Covariance matrix: 3.3694E-13 -3.6294E-13 -9.1143E-15 2.5841E-14 -7.0695E-14 -2.9367E-12 -3.6294E-13 5.8183E-13 1.9406E-14 -4.8194E-14 6.4649E-14 5.5815E-12 -9.1143E-15 1.9406E-14 1.9582E-13 -9.8188E-14 -1.2177E-14 2.0878E-13 2.5841E-14 -4.8194E-14 -9.8188E-14 7.8377E-14 -1.4140E-14 -5.3175E-13 -7.0695E-14 6.4649E-14 -1.2177E-14 -1.4140E-14 5.1775E-13 8.6226E-13 -2.9367E-12 5.5815E-12 2.0878E-13 -5.3175E-13 8.6226E-13 6.1353E-11 # lat0 lon0 xBary yBary zBary JD0 -37.589830 3.152552 -0.761149 -0.385759 -0.501416 2456977.743018 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 29.72917 +/- 0.016 Argument of Peri: 199.91314 +/- 0.025 Long of Asc Node: 105.88883 +/- 0.001 Inclination: 37.58974 +/- 0.000 Eccentricity: 0.35918291 +/- 0.0003 Semi-Major Axis: 54.77980927 +/- 0.0187 Time of Perihelion: 2444740.9783 +/- 2.2 Perihelion: 35.10383769 +/- 0.0217 Aphelion: 74.45578084 +/- 0.0312 Period (y) 405.4516 +/- 0.21 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.33910761 +/- 0.0009 Ecliptic Y 2.54536219 +/- 0.0001 Ecliptic Z -24.48055427 +/- 0.0007 Ecliptic XDOT 0.00018343 +/- 0.0000 Ecliptic YDOT 0.00292592 +/- 0.0000 Ecliptic ZDOT -0.00075246 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.63981160 +/- 0.0008 Geocenter to KBO 40.13154639 +/- 0.0012 # Hcoef: 7.11
The following table shows the complete astrometric record for 14WY555. 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 (14WY555) followed by the observatory code and reference code for the source of the astrometry.
2014 11 16.24224 01 18 37.79 -32 50 33.6 23.1r 14WY555 W84 C~3cpS 2014 11 16.24360 01 18 37.773 -32 50 33.71 23.0i 14WY555 W84 C~4yVK 2014 11 27.21459 01 17 53.780 -32 46 30.22 23.8g 14WY555 W84 C~4yVK 2015 01 24.04826 01 17 13.822 -31 57 17.80 22.8z 14WY555 W84 C~4yVK 2015 11 01.23419 01 26 35.883 -32 19 16.99 23.0i 14WY555 W84 C~4yVK 2015 11 05.13688 01 26 15.977 -32 19 17.41 23.5g 14WY555 W84 C~4yVK 2015 11 05.13827 01 26 15.952 -32 19 17.49 23.0i 14WY555 W84 C~4yVK 2015 11 05.13965 01 26 15.952 -32 19 17.38 23.3r 14WY555 W84 C~4yVK 2015 11 06.22355 01 26 10.509 -32 19 14.37 24.2g 14WY555 W84 C~4yVK 2015 11 06.22492 01 26 10.499 -32 19 14.60 23.5i 14WY555 W84 C~4yVK 2015 11 06.22632 01 26 10.489 -32 19 14.52 23.5r 14WY555 W84 C~4yVK 2015 11 30.19769 01 24 26.869 -32 12 39.63 22.9i 14WY555 W84 C~4yVK 2015 12 01.14953 01 24 23.583 -32 12 11.31 23.5r 14WY555 W84 C~4yVK 2015 12 01.15092 01 24 23.577 -32 12 11.54 24.2g 14WY555 W84 C~4yVK 2016 09 30.37020 01 35 53.900 -31 34 56.82 23.1r 14WY555 W84 C~4yVK 2016 09 30.37156 01 35 53.888 -31 34 56.77 23.0i 14WY555 W84 C~4yVK 2016 09 30.37293 01 35 53.883 -31 34 56.99 24.1g 14WY555 W84 C~4yVK 2016 11 17.22694 01 31 48.363 -31 43 38.01 22.7z 14WY555 W84 C~4yVK 2016 11 28.06687 01 31 03.968 -31 39 55.05 24.2g 14WY555 W84 C~4yVK 2017 02 03.03380 01 30 34.342 -30 42 06.92 22.8z 14WY555 W84 C~4yVK 2017 12 24.13633 01 36 16.007 -30 49 44.58 22.7z 14WY555 W84 C~4yVK 2018 11 17.04075 01 44 27.572 -30 34 07.61 22.6z 14WY555 W84 C~4yVK
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 0.13 0.00 0.00
2 0.0000 -0.24 -0.05 0.00 -0.05
3 0.0300 -374.29 -0.00 476.44 0.21
4 0.1884 568.25 -0.04 3320.11 0.06
5 0.9582 6202.30 -0.11 -1261.62 0.02
6 0.9689 5981.76 0.11 -1138.56 -0.08
7 0.9689 5981.45 -0.12 -1138.48 -0.05
8 0.9689 5981.50 0.01 -1138.38 0.00
9 0.9719 5922.71 0.08 -1102.04 0.08
10 0.9719 5922.49 -0.07 -1102.18 -0.11
11 0.9719 5922.42 -0.06 -1102.05 -0.02
12 1.0375 4965.56 0.11 -117.25 -0.07
13 1.0401 4942.79 0.07 -72.25 0.04
14 1.0401 4942.61 -0.07 -72.41 -0.19
15 1.8730 13703.72 0.02 -2499.41 -0.04
16 1.8730 13703.62 0.01 -2499.29 0.07
17 1.8730 13703.45 -0.05 -2499.45 -0.09
18 2.0041 10721.91 -0.06 -1367.68 0.25
19 2.0337 10340.98 0.09 -891.12 -0.05
20 2.2171 11740.55 0.01 2311.48 -0.01
21 3.1044 15333.26 0.01 -302.01 0.07
22 4.0022 21295.19 -0.01 -2784.02 -0.03
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.
14WY555 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 55.449 55.507 55.391 ecceobj 0.366 0.366 0.365 incobj 37.592 37.592 37.591 qmin 33.063 32.825 33.191 qmax 78.230 78.544 77.971 amean 55.086 55.152 55.028 amin 54.453 54.535 54.403 amax 55.903 55.991 55.835 emean 0.377 0.379 0.374 emin 0.352 0.351 0.351 emax 0.399 0.404 0.397 imean 35.424 35.379 35.509 imin 34.801 34.693 34.914 imax 36.272 36.343 36.300 excite_mean 0.692 0.692 0.691 fracstop 1.000 1.000 1.000 cjmean 2.589 2.589 2.589 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 199.9 208.2 192.0 kozaiamp 180.0 180.0 180.0