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: 14QW495 # Created Mon Apr 28 01:10:03 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 30 observations of 30 # Arc: 5.12y # First observation: 2013/09/23 # Last observation: 2018/11/08 # Chi-squared of fit: 15.21 DOF: 54 RMS: 0.13 # Min/Max residuals: -0.23 0.32 # Exact a, adot, b, bdot, g, gdot: 2.055236E-05 3.843185E-02 -7.082078E-06 -1.403667E-02 2.926822E-02 5.262510E-03 # Covariance matrix: 5.2615E-13 -4.7972E-13 -1.2060E-13 1.4725E-13 5.5241E-14 -2.1118E-12 -4.7972E-13 5.4965E-13 1.2670E-13 -1.7262E-13 -2.8440E-13 2.6163E-12 -1.2060E-13 1.2670E-13 1.9755E-13 -9.4012E-14 8.4802E-14 6.0145E-13 1.4725E-13 -1.7262E-13 -9.4012E-14 8.0160E-14 3.9641E-14 -8.4650E-13 5.5241E-14 -2.8440E-13 8.4802E-14 3.9641E-14 1.7687E-12 -1.6916E-12 -2.1118E-12 2.6163E-12 6.0145E-13 -8.4650E-13 -1.6916E-12 1.3020E-11 # lat0 lon0 xBary yBary zBary JD0 -21.413458 -60.303236 -0.878340 -0.177142 -0.451935 2456559.490368 # Heliocentric elements and errors Epoch: 2456558.5000 = 2013/09/23 Mean Anomaly: 2.00600 +/- 0.003 Argument of Peri: 208.81833 +/- 0.009 Long of Asc Node: 75.99671 +/- 0.000 Inclination: 28.53066 +/- 0.000 Eccentricity: 0.74431945 +/- 0.0003 Semi-Major Axis: 131.90176884 +/- 0.1487 Time of Perihelion: 2453475.2903 +/- 7.5 Perihelion: 33.72471704 +/- 0.0531 Aphelion: 230.07882063 +/- 0.2620 Period (y) 1514.9006 +/- 2.56 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 16.76174534 +/- 0.0007 Ecliptic Y -27.61415925 +/- 0.0013 Ecliptic Z -12.47435913 +/- 0.0006 Ecliptic XDOT 0.00310625 +/- 0.0000 Ecliptic YDOT 0.00179807 +/- 0.0000 Ecliptic ZDOT -0.00140199 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.62801914 +/- 0.0011 Geocenter to KBO 34.16670987 +/- 0.0016 # Hcoef: 7.68
The following table shows the complete astrometric record for 14QW495. 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 (14QW495) followed by the observatory code and reference code for the source of the astrometry.
2013 09 23.98959 20 30 48.006 -41 02 41.39 23.1i 14QW495 W84 C~4yTz 2014 08 29.052234 20 45 08.96 -41 15 01.0 22.8i 14QW495 W84 C~35bt 2014 08 29.05277 20 45 08.969 -41 15 01.13 22.9i 14QW495 W84 C~4yTz 2014 09 12.070081 20 43 55.58 -41 14 42.2 22.8i 14QW495 W84 C~35bt 2014 09 12.07061 20 43 55.572 -41 14 42.16 22.7i 14QW495 W84 C~4yTz 2014 09 20.004097 20 43 22.47 -41 13 21.1 22.9i 14QW495 W84 C~35bt 2014 09 20.00462 20 43 22.475 -41 13 21.32 23.2i 14QW495 W84 C~4yTz 2014 09 20.005498 20 43 22.46 -41 13 21.1 23.2r 14QW495 W84 C~35bt 2014 09 20.00602 20 43 22.454 -41 13 21.36 23.3r 14QW495 W84 C~4yTz 2014 09 24.05025 20 43 08.335 -41 12 21.20 23.3i 14QW495 W84 C~4yTz 2014 09 25.026308 20 43 05.22 -41 12 04.8 23.0r 14QW495 W84 C~35bt 2014 09 25.02684 20 43 05.224 -41 12 04.75 23.5r 14QW495 W84 C~4yTz 2014 09 27.004560 20 42 59.29 -41 11 29.5 23.0r 14QW495 W84 C~35bt 2014 09 27.00509 20 42 59.288 -41 11 29.52 23.0r 14QW495 W84 C~4yTz 2015 09 13.073912 20 56 08.88 -41 18 56.5 23.0r 14QW495 W84 C~35bt 2015 09 13.07444 20 56 08.883 -41 18 56.52 23.1r 14QW495 W84 C~4yTz 2015 09 13.075289 20 56 08.89 -41 18 56.5 22.7i 14QW495 W84 C~35bt 2015 09 13.07582 20 56 08.887 -41 18 56.51 22.8i 14QW495 W84 C~4yTz 2015 09 13.076667 20 56 08.88 -41 18 56.4 24.3g 14QW495 W84 C~35bt 2015 09 13.07719 20 56 08.878 -41 18 56.41 24.1g 14QW495 W84 C~4yTz 2016 08 23.256516 21 10 11.66 -41 16 44.7 22.8z 14QW495 W84 C~35bt 2016 08 23.25704 21 10 11.673 -41 16 44.85 22.9z 14QW495 W84 C~4yTz 2016 09 07.16952 21 08 43.408 -41 18 31.89 24.3g 14QW495 W84 C~4yTz 2017 09 12.08775 21 20 15.086 -41 13 11.09 23.7r 14QW495 W84 C~4yTz 2017 10 20.005961 21 18 11.08 -41 02 05.4 21.5r 14QW495 W84 C~35bt 2017 10 22.00581 21 18 09.499 -41 00 59.57 22.8z 14QW495 W84 C~4yTz 2018 09 15.21269 21 31 42.399 -41 03 30.44 23.1i 14QW495 W84 C~4yTz 2018 10 22.06031 21 29 40.572 -40 52 30.67 22.9z 14QW495 W84 C~4yTz 2018 11 08.07158 21 29 42.198 -40 41 41.47 23.3r 14QW495 W84 C~4yTz 2018 11 08.10806 21 29 42.237 -40 41 39.91 23.9g 14QW495 W84 C~4yTz
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 0.09 0.00 -0.09
2 0.9283 0.00 -0.15 0.00 0.14
3 0.9283 0.00 0.03 0.00 0.01
4 0.9667 0.00 -0.07 0.00 0.17
5 0.9667 0.00 -0.16 0.00 0.21
6 0.9884 0.00 -0.02 0.00 0.24
7 0.9884 0.00 0.09 0.00 0.02
8 0.9884 0.00 -0.09 0.00 0.22
9 0.9884 0.00 -0.15 0.00 -0.04
10 0.9995 0.00 0.10 0.00 -0.09
11 1.0022 0.00 0.02 0.00 -0.09
12 1.0022 0.00 0.10 0.00 -0.04
13 1.0076 0.00 0.15 0.00 -0.18
14 1.0076 0.00 0.14 0.00 -0.21
15 1.9687 0.00 -0.18 0.00 -0.09
16 1.9687 0.00 -0.10 0.00 -0.11
17 1.9687 0.00 0.07 0.00 -0.09
18 1.9688 0.00 0.06 0.00 -0.11
19 1.9688 0.00 0.02 0.00 -0.00
20 1.9688 0.00 0.03 0.00 -0.02
21 2.9138 0.00 -0.11 0.00 0.26
22 2.9138 0.00 0.13 0.00 0.11
23 2.9546 0.00 0.32 0.00 -0.12
24 3.9674 0.00 -0.03 0.00 -0.12
25 4.0712 0.00 -0.05 0.00 0.04
26 4.0767 0.00 -0.01 0.00 -0.15
27 4.9753 0.00 0.17 0.00 0.14
28 5.0762 0.00 -0.23 0.00 -0.01
29 5.1227 0.00 0.04 0.00 0.01
30 5.1228 0.00 -0.04 0.00 -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.
14QW495 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 132.751 132.750 132.752 ecceobj 0.746 0.746 0.746 incobj 28.551 28.551 28.551 qmin 32.708 31.629 31.739 qmax 243.680 248.732 244.621 amean 133.470 134.313 132.608 amin 130.085 130.488 128.858 amax 138.914 140.870 138.998 emean 0.745 0.752 0.749 emin 0.734 0.738 0.738 emax 0.755 0.766 0.760 imean 27.581 26.465 26.541 imin 26.835 25.553 25.812 imax 28.203 27.643 27.650 excite_mean 0.877 0.874 0.872 fracstop 1.000 1.000 1.000 cjmean 2.716 2.716 2.716 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 232.0 253.2 250.1 kozaiamp 22.5 50.1 46.3