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: 14SC404 # Created Fri Nov 22 02:10:03 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 14 observations of 17 # Arc: 4.14y # First observation: 2014/09/25 # Last observation: 2018/11/15 # Chi-squared of fit: 9.14 DOF: 22 RMS: 0.14 # Min/Max residuals: -0.45 0.24 # Exact a, adot, b, bdot, g, gdot: 1.956016E-05 3.819875E-02 -3.474159E-06 -1.121380E-02 3.265158E-02 -4.942757E-03 # Covariance matrix: 2.7846E-13 -8.6100E-14 -2.5695E-14 2.1850E-14 1.1539E-13 -1.6060E-13 -8.6100E-14 8.8807E-14 2.8303E-14 -2.4820E-14 8.7683E-14 1.8748E-13 -2.5695E-14 2.8303E-14 1.6784E-13 -3.0258E-14 2.0452E-14 6.4875E-14 2.1850E-14 -2.4820E-14 -3.0258E-14 1.3587E-14 -1.9720E-14 -5.6749E-14 1.1539E-13 8.7683E-14 2.0452E-14 -1.9720E-14 5.7303E-13 1.6057E-13 -1.6060E-13 1.8748E-13 6.4875E-14 -5.6749E-14 1.6057E-13 4.2773E-13 # lat0 lon0 xBary yBary zBary JD0 -21.774807 29.377537 0.464686 -0.330581 -0.827993 2456925.779388 # Heliocentric elements and errors Epoch: 2456926.5000 = 2014/09/26 Mean Anomaly: 333.53603 +/- 0.008 Argument of Peri: 276.86039 +/- 0.011 Long of Asc Node: 158.17427 +/- 0.000 Inclination: 26.71907 +/- 0.000 Eccentricity: 0.24572235 +/- 0.0001 Semi-Major Axis: 39.45506383 +/- 0.0048 Time of Perihelion: 2463580.8418 +/- 15.3 Perihelion: 29.76007291 +/- 0.0044 Aphelion: 49.15005476 +/- 0.0065 Period (y) 247.8348 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.78591776 +/- 0.0006 Ecliptic Y 13.98642830 +/- 0.0003 Ecliptic Z -11.36128097 +/- 0.0003 Ecliptic XDOT -0.00221525 +/- 0.0000 Ecliptic YDOT 0.00242659 +/- 0.0000 Ecliptic ZDOT -0.00071934 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 31.45819009 +/- 0.0005 Geocenter to KBO 30.62649679 +/- 0.0007 # Hcoef: 8.84
The following table shows the complete astrometric record for 14SC404. 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 (14SC404) followed by the observatory code and reference code for the source of the astrometry.
2014 09 25.27861 02 19 47.428 -09 09 24.58 23.9g 14SC404 W84 C~55S9 2014 09 30.26596 02 19 23.725 -09 13 42.65 23.4r 14SC404 W84 C~55S9 2014 10 02.35943 02 19 13.264 -09 15 28.50 23.9r 14SC404 W84 C~55S9 2014 10 29.30143 02 16 41.219 -09 34 46.12 23.5i 14SC404 W84 C~55S9 2014 10 29.30417 02 16 41.204 -09 34 46.01 24.5g 14SC404 W84 C~55S9 2015 11 05.16032 02 25 18.697 -09 28 19.14 24.3r 14SC404 W84 C~55S9 2016 09 14.40311 02 39 01.933 -08 38 17.66 23.5i 14SC404 W84 C~55S9 2016 09 24.30754 02 38 24.597 -08 47 17.76 23.4r 14SC404 W84 C~55S9 2016 11 25.19103 02 32 39.023 -09 24 29.23 23.8r 14SC404 W84 C~55S9 2017 08 25.40211 02 49 03.733 -08 07 33.74 23.9r 14SC404 W84 C~55S9 2017 10 21.23130 02 45 34.041 -08 56 49.30 24.1g 14SC404 W84 C~55S9 2017 12 08.12578 02 40 56.984 -09 13 48.14 23.9r 14SC404 W84 C~55S9 2018 11 15.27555 02 52 35.577 -08 57 22.69 23.5i 14SC404 W84 C~55S9 2018 11 15.27693 02 52 35.564 -08 57 22.73 23.6r 14SC404 W84 C~55S9 2024 11 01.37385 03 52 42.199 -07 12 28.37 23.5G 14SC404 G37 2024 11 01.42122 03 52 41.907 -07 12 29.99 14SC404 G37 2024 11 01.46915 03 52 41.624 -07 12 31.79 14SC404 G37
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 -0.06 0.00 -0.45
2 0.0137 0.00 -0.02 0.00 0.00
3 0.0194 0.00 0.04 0.00 0.12
4 0.0931 0.00 -0.04 0.00 -0.02
5 0.0932 0.00 -0.02 0.00 0.19
6 1.1112 0.00 0.24 0.00 0.13
7 1.9716 0.00 0.10 0.00 0.13
8 1.9987 0.00 0.05 0.00 0.07
9 2.1681 0.00 -0.19 0.00 0.05
10 2.9161 0.00 -0.05 0.00 0.08
11 3.0717 0.00 -0.17 0.00 0.02
12 3.2029 0.00 0.12 0.00 -0.29
13 4.1396 0.00 0.07 0.00 0.01
14 4.1396 0.00 0.01 0.00 -0.00
15 10.1029 0.00 ( -3.05) 0.00 ( -0.72)
16 10.1031 0.00 ( -3.18) 0.00 ( -0.55)
17 10.1032 0.00 ( -3.13) 0.00 ( -0.55)
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.
14SC404 quality flag:3 Type: 3:2E 3:2E 3:2E Type: 6:4II 6:4II 6:4II axisobj 39.743 39.756 39.730 ecceobj 0.248 0.248 0.248 incobj 26.652 26.652 26.652 qmin 28.020 27.957 28.007 qmax 51.366 51.405 51.574 amean 39.453 39.454 39.454 amin 39.016 39.019 39.039 amax 39.956 39.948 39.985 emean 0.257 0.258 0.257 emin 0.225 0.223 0.224 emax 0.287 0.290 0.290 imean 25.179 25.160 25.183 imin 24.447 24.401 24.472 imax 25.909 25.914 25.914 excite_mean 0.498 0.498 0.498 fracstop 1.000 1.000 1.000 cjmean 2.765 2.765 2.765 libcent 0 180.3 180.1 179.4 libamp 0 70.4 67.5 70.9 libcent 1 180.8 182.2 182.1 libamp 1 160.4 153.2 160.7 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 270.3 270.3 270.3 kozaiamp 18.2 18.4 18.1