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: 13VQ25 # Created Wed Dec 25 02:09:46 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 45 observations of 45 # Arc: 9.07y # First observation: 2013/11/03 # Last observation: 2022/11/28 # Chi-squared of fit: 12.65 DOF: 84 RMS: 0.09 # Min/Max residuals: -0.32 0.41 # Exact a, adot, b, bdot, g, gdot: 1.862230E-05 3.348796E-02 -7.096992E-06 -1.327698E-02 2.872085E-02 1.373230E-03 # Covariance matrix: 2.0436E-13 -9.2895E-14 -3.3541E-14 2.7578E-14 -7.2635E-14 -2.3883E-13 -9.2895E-14 5.8282E-14 2.5651E-14 -2.0072E-14 2.6754E-14 1.7557E-13 -3.3541E-14 2.5651E-14 1.0112E-13 -2.8759E-14 2.5470E-15 9.0634E-14 2.7578E-14 -2.0072E-14 -2.8759E-14 1.4224E-14 -6.4271E-15 -6.9284E-14 -7.2635E-14 2.6754E-14 2.5470E-15 -6.4271E-15 1.2800E-13 4.8231E-14 -2.3883E-13 1.7557E-13 9.0634E-14 -6.9284E-14 4.8231E-14 6.0898E-13 # lat0 lon0 xBary yBary zBary JD0 -19.917484 13.250346 -0.452598 -0.300228 -0.828930 2456599.518228 # Heliocentric elements and errors Epoch: 2456600.5000 = 2013/11/04 Mean Anomaly: 3.17688 +/- 0.001 Argument of Peri: 215.32808 +/- 0.004 Long of Asc Node: 153.73614 +/- 0.000 Inclination: 28.61635 +/- 0.000 Eccentricity: 0.42505890 +/- 0.0001 Semi-Major Axis: 61.79642765 +/- 0.0062 Time of Perihelion: 2455034.6787 +/- 0.8 Perihelion: 35.52930583 +/- 0.0048 Aphelion: 88.06354946 +/- 0.0093 Period (y) 485.7952 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.61732707 +/- 0.0004 Ecliptic Y 8.14875447 +/- 0.0001 Ecliptic Z -11.86156084 +/- 0.0001 Ecliptic XDOT -0.00103775 +/- 0.0000 Ecliptic YDOT 0.00303503 +/- 0.0000 Ecliptic ZDOT -0.00123439 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.65089952 +/- 0.0004 Geocenter to KBO 34.81792175 +/- 0.0004 # Hcoef: 7.70
The following table shows the complete astrometric record for 13VQ25. 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 (13VQ25) followed by the observatory code and reference code for the source of the astrometry.
2013 11 03.01745 01 20 01.78 -13 06 39.1 13VQ25 W84 C~2TH5 2013 11 04.01483 01 19 57.07 -13 06 58.8 13VQ25 W84 C~2TH5 2013 11 05.01008 01 19 52.40 -13 07 17.7 23.4r 13VQ25 W84 C~2TH5 2014 08 19.34501 01 33 50.058 -12 09 44.84 23.0i 13VQ25 W84 C~4yRP 2014 08 19.34640 01 33 50.058 -12 09 44.79 23.5r 13VQ25 W84 C~4yRP 2014 08 19.34777 01 33 50.053 -12 09 44.95 22.6z 13VQ25 W84 C~4yRP 2014 09 16.265139 01 32 22.95 -12 32 45.9 22.6i 13VQ25 W84 C~352E 2014 09 16.26566 01 32 22.949 -12 32 45.93 23.0i 13VQ25 W84 C~4yRP 2014 09 25.24657 01 31 43.530 -12 39 48.00 22.9r 13VQ25 W84 C~4yRP 2014 09 25.24794 01 31 43.518 -12 39 48.02 24.2g 13VQ25 W84 C~4yRP 2014 12 13.13697 01 26 02.813 -13 04 28.87 22.7r 13VQ25 W84 C~4yRP 2014 12 20.13143 01 25 50.724 -13 02 25.55 24.1g 13VQ25 W84 C~4yRP 2014 12 20.13279 01 25 50.714 -13 02 25.40 23.0i 13VQ25 W84 C~4yRP 2015 08 18.41773 01 42 10.762 -12 03 06.55 23.7r 13VQ25 W84 C~4yRP 2015 09 13.27258 01 40 59.092 -12 24 29.39 23.3i 13VQ25 W84 C~4yRP 2015 09 13.27396 01 40 59.087 -12 24 29.51 23.0r 13VQ25 W84 C~4yRP 2015 10 17.19620 01 38 21.663 -12 48 58.45 23.2r 13VQ25 W84 C~4yRP 2015 11 02.17157 01 37 00.447 -12 56 38.38 24.4g 13VQ25 W84 C~4yRP 2015 11 06.24344 01 36 40.503 -12 58 03.56 23.8g 13VQ25 W84 C~4yRP 2015 11 07.13602 01 36 36.219 -12 58 20.28 22.8i 13VQ25 W84 C~4yRP 2015 11 20.11807 01 35 37.771 -13 01 05.08 22.3z 13VQ25 W84 C~4yRP 2015 12 18.135382 01 34 11.45 -12 58 19.3 22.3z 13VQ25 W84 C~352E 2016 01 01.06411 01 33 56.050 -12 52 45.60 23.7r 13VQ25 W84 C~4yRP 2016 01 01.06547 01 33 56.048 -12 52 45.65 22.8i 13VQ25 W84 C~4yRP 2016 01 01.06685 01 33 56.055 -12 52 45.58 24.2g 13VQ25 W84 C~4yRP 2016 09 30.22822 01 48 04.117 -12 31 50.11 22.4i 13VQ25 W84 C~4yRP 2016 09 30.22961 01 48 04.101 -12 31 50.26 23.4r 13VQ25 W84 C~4yRP 2016 09 30.23097 01 48 04.098 -12 31 50.26 24.4g 13VQ25 W84 C~4yRP 2016 10 01.34236 01 47 58.862 -12 32 39.22 23.5r 13VQ25 W84 C~4yRP 2016 10 01.34375 01 47 58.860 -12 32 39.32 23.2i 13VQ25 W84 C~4yRP 2016 10 01.34512 01 47 58.849 -12 32 39.33 22.9g 13VQ25 W84 C~4yRP 2017 10 30.27947 01 53 53.099 -12 42 19.40 22.9z 13VQ25 W84 C~4yRP 2017 11 17.12871 01 52 26.013 -12 47 44.67 23.9g 13VQ25 W84 C~4yRP 2017 11 18.17969 01 52 21.259 -12 47 55.16 22.8r 13VQ25 W84 C~4yRP 2017 11 18.18107 01 52 21.254 -12 47 55.25 23.9g 13VQ25 W84 C~4yRP 2017 12 15.10739 01 50 44.593 -12 46 33.95 23.5g 13VQ25 W84 C~4yRP 2017 12 22.12476 01 50 29.371 -12 44 25.64 23.4r 13VQ25 W84 C~4yRP 2018 11 17.09484 02 00 41.445 -12 39 46.35 23.0i 13VQ25 W84 C~4yRP 2018 12 02.13009 01 59 37.481 -12 40 51.23 23.2r 13VQ25 W84 C~4yRP 2018 12 02.13146 01 59 37.452 -12 40 51.35 24.2g 13VQ25 W84 C~4yRP 2019 10 26.303510 02 10 43.175 -12 23 05.32 23.3G 13VQ25 G37 C~3clV 2019 10 26.360720 02 10 42.879 -12 23 07.13 13VQ25 G37 C~3clV 2022 11 28.111370 02 32 08.489 -12 00 59.94 23.3G 13VQ25 G37 C~675e 2022 11 28.162630 02 32 08.250 -12 00 59.91 13VQ25 G37 C~675e 2022 11 28.214590 02 32 08.004 -12 01 00.28 13VQ25 G37 C~675e
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 -0.02 0.00 -0.06
2 0.0027 0.00 0.08 0.00 0.01
3 0.0055 0.00 0.03 0.00 -0.00
4 0.7921 0.00 -0.02 0.00 -0.00
5 0.7921 0.00 0.02 0.00 0.12
6 0.7921 0.00 -0.01 0.00 0.02
7 0.8686 0.00 -0.01 0.00 -0.03
8 0.8686 0.00 0.01 0.00 -0.04
9 0.8932 0.00 0.04 0.00 0.00
10 0.8932 0.00 -0.05 0.00 0.05
11 1.1092 0.00 -0.01 0.00 -0.01
12 1.1283 0.00 0.09 0.00 -0.07
13 1.1283 0.00 -0.03 0.00 0.05
14 1.7889 0.00 -0.11 0.00 -0.05
15 1.8597 0.00 0.04 0.00 0.04
16 1.8597 0.00 0.05 0.00 -0.01
17 1.9526 0.00 0.09 0.00 -0.16
18 1.9963 0.00 -0.04 0.00 -0.03
19 2.0075 0.00 -0.03 0.00 -0.05
20 2.0099 0.00 0.03 0.00 0.03
21 2.0455 0.00 -0.03 0.00 0.01
22 2.1222 0.00 -0.32 0.00 0.41
23 2.1603 0.00 0.00 0.00 0.02
24 2.1603 0.00 -0.02 0.00 -0.07
25 2.1603 0.00 0.09 0.00 -0.04
26 2.9082 0.00 0.06 0.00 0.11
27 2.9082 0.00 -0.08 0.00 0.02
28 2.9082 0.00 -0.03 0.00 0.08
29 2.9112 0.00 0.03 0.00 -0.15
30 2.9112 0.00 0.10 0.00 -0.19
31 2.9112 0.00 0.03 0.00 -0.14
32 3.9898 0.00 0.06 0.00 0.13
33 4.0386 0.00 -0.00 0.00 0.10
34 4.0415 0.00 0.02 0.00 -0.01
35 4.0415 0.00 0.04 0.00 -0.08
36 4.1152 0.00 0.15 0.00 0.13
37 4.1344 0.00 0.04 0.00 0.02
38 5.0379 0.00 0.11 0.00 0.13
39 5.0790 0.00 0.08 0.00 0.07
40 5.0790 0.00 -0.28 0.00 -0.06
41 5.9775 0.00 -0.02 0.00 -0.03
42 5.9777 0.00 0.04 0.00 -0.11
43 9.0680 0.00 0.05 0.00 -0.11
44 9.0682 0.00 0.00 0.00 0.12
45 9.0683 0.00 -0.09 0.00 -0.07
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.
13VQ25 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 62.384 62.384 62.384 ecceobj 0.431 0.431 0.431 incobj 28.559 28.559 28.559 qmin 34.025 34.008 34.043 qmax 90.693 90.750 90.769 amean 61.566 61.686 61.729 amin 60.623 60.970 60.940 amax 62.671 62.691 62.734 emean 0.429 0.429 0.430 emin 0.408 0.410 0.410 emax 0.447 0.448 0.448 imean 27.176 27.200 27.206 imin 26.518 26.550 26.563 imax 28.106 28.111 28.121 excite_mean 0.627 0.627 0.627 fracstop 1.000 1.000 1.000 cjmean 2.788 2.788 2.788 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 194.3 193.5 193.6 kozaiamp 179.9 180.0 180.0