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: 15QC34 # Created Sun Dec 22 02:10:26 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 40 observations of 40 # Arc: 7.28y # First observation: 2015/08/19 # Last observation: 2022/11/28 # Chi-squared of fit: 18.68 DOF: 74 RMS: 0.12 # Min/Max residuals: -0.47 0.29 # Exact a, adot, b, bdot, g, gdot: 1.765084E-05 2.900473E-02 3.314399E-06 6.181721E-03 2.617691E-02 -5.832824E-03 # Covariance matrix: 4.7075E-13 -1.7003E-13 4.9296E-14 -2.8711E-14 6.0198E-15 -5.9892E-13 -1.7003E-13 1.2401E-13 -3.0547E-14 2.3182E-14 9.6911E-14 5.0618E-13 4.9296E-14 -3.0547E-14 2.7592E-13 -6.6383E-14 -6.8496E-15 -1.5795E-13 -2.8711E-14 2.3182E-14 -6.6383E-14 2.0319E-14 1.4959E-14 1.1221E-13 6.0198E-15 9.6911E-14 -6.8496E-15 1.4959E-14 2.0396E-13 3.5803E-13 -5.9892E-13 5.0618E-13 -1.5795E-13 1.1221E-13 3.5803E-13 2.4254E-12 # lat0 lon0 xBary yBary zBary JD0 -18.905343 26.276017 0.881245 -0.162881 -0.476107 2457253.870989 # Heliocentric elements and errors Epoch: 2457254.5000 = 2015/08/20 Mean Anomaly: 337.64022 +/- 0.005 Argument of Peri: 349.47124 +/- 0.008 Long of Asc Node: 82.01724 +/- 0.001 Inclination: 21.90715 +/- 0.000 Eccentricity: 0.36607389 +/- 0.0001 Semi-Major Axis: 55.50394105 +/- 0.0060 Time of Perihelion: 2466635.5028 +/- 22.9 Perihelion: 35.18539764 +/- 0.0053 Aphelion: 75.82248445 +/- 0.0090 Period (y) 413.5175 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.24398519 +/- 0.0006 Ecliptic Y 15.43208318 +/- 0.0003 Ecliptic Z -12.37742682 +/- 0.0002 Ecliptic XDOT -0.00167464 +/- 0.0000 Ecliptic YDOT 0.00255103 +/- 0.0000 Ecliptic ZDOT 0.00080939 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.68493261 +/- 0.0005 Geocenter to KBO 38.20176620 +/- 0.0007 # Hcoef: 8.31
The following table shows the complete astrometric record for 15QC34. 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 (15QC34) followed by the observatory code and reference code for the source of the astrometry.
2015 08 19.37020 02 04 40.736 -07 30 30.84 24.1r 15QC34 W84 C~55Wd 2015 10 17.20063 02 01 13.610 -08 02 13.01 23.6r 15QC34 W84 C~55Wd 2016 09 10.40608 02 09 35.518 -06 46 53.16 23.7i 15QC34 W84 C~55Wd 2017 09 18.39055 02 15 00.202 -05 53 51.18 23.4i 15QC34 W84 C~55Wd 2017 10 22.22156 02 12 27.860 -06 10 34.01 24.1r 15QC34 W84 C~55Wd 2017 11 23.12060 02 09 50.725 -06 18 05.95 22.8i 15QC34 W84 C~55Wd 2017 11 23.12198 02 09 50.711 -06 18 06.16 23.4r 15QC34 W84 C~55Wd 2017 11 23.12336 02 09 50.713 -06 18 06.01 23.9g 15QC34 W84 C~55Wd 2018 11 16.22052 02 16 18.201 -05 19 11.06 23.7i 15QC34 W84 C~55Wd 2018 12 01.06511 02 15 10.864 -05 20 12.68 23.5r 15QC34 W84 C~55Wd 2018 12 01.06649 02 15 10.851 -05 20 12.75 24.0g 15QC34 W84 C~55Wd 2019 09 29.50915 02 26 11.59 -04 01 51.0 23.5i 15QC34 T09 C~8H9t 2019 09 29.52745 02 26 11.54 -04 01 51.5 23.4i 15QC34 T09 C~8H9t 2019 09 29.54579 02 26 11.45 -04 01 51.9 23.3i 15QC34 T09 C~8H9t 2019 09 29.60928 02 26 11.15 -04 01 54.1 23.2z 15QC34 T09 C~8H9t 2019 09 29.63123 02 26 11.10 -04 01 54.7 23.0z 15QC34 T09 C~8H9t 2019 10 23.51107 02 24 18.53 -04 13 02.6 24.1z 15QC34 T09 C~7ltD 2019 10 23.51458 02 24 18.52 -04 13 02.6 24.2z 15QC34 T09 C~7ltD 2019 10 23.53661 02 24 18.41 -04 13 03.3 24.6z 15QC34 T09 C~7ltD 2019 10 23.55512 02 24 18.31 -04 13 03.6 23.5z 15QC34 T09 C~7ltD 2019 10 23.57674 02 24 18.19 -04 13 04.3 24.1z 15QC34 T09 C~7ltD 2019 11 01.43842 02 23 32.62 -04 16 15.5 24.4g 15QC34 T09 C~7bLi 2019 11 01.52871 02 23 32.15 -04 16 17.2 24.7g 15QC34 T09 C~7bLi 2019 11 01.57346 02 23 31.93 -04 16 17.9 24.4g 15QC34 T09 C~7bLi 2019 11 27.23282 02 21 25.30 -04 21 10.1 24.8z 15QC34 T09 C~7mzq 2019 11 27.32148 02 21 24.89 -04 21 10.3 24.3i 15QC34 T09 C~7mzq 2019 11 27.34361 02 21 24.79 -04 21 10.3 25.0i 15QC34 T09 C~7mzq 2019 11 27.45540 02 21 24.27 -04 21 10.6 24.5r 15QC34 T09 C~7mzq 2019 11 27.50048 02 21 24.06 -04 21 10.9 25.2r 15QC34 T09 C~7mzq 2019 12 22.34698 02 19 52.57 -04 18 27.4 23.4i 15QC34 T09 C~7mzq 2019 12 22.35082 02 19 52.57 -04 18 27.4 23.4i 15QC34 T09 C~7mzq 2019 12 22.35465 02 19 52.55 -04 18 27.3 23.3i 15QC34 T09 C~7mzq 2020 01 20.25252 02 19 13.47 -04 06 05.5 24.5r 15QC34 T09 C~7zoV 2020 01 20.26437 02 19 13.47 -04 06 05.2 24.6r 15QC34 T09 C~7zoV 2020 01 20.27226 02 19 13.48 -04 06 05.0 25.1r 15QC34 T09 C~7zoV 2020 01 20.32078 02 19 13.48 -04 06 03.3 24.9i 15QC34 T09 C~7zoV 2020 01 20.33669 02 19 13.48 -04 06 02.5 25.3i 15QC34 T09 C~7zoV 2022 11 28.255090 02 39 34.111 -01 18 43.60 23.7G 15QC34 G37 C~67A0 2022 11 28.305030 02 39 33.887 -01 18 43.84 15QC34 G37 C~67A0 2022 11 28.354910 02 39 33.650 -01 18 44.06 15QC34 G37 C~67A0
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 0.07
2 0.1611 0.00 0.07 0.00 -0.05
3 1.0624 0.00 0.16 0.00 -0.12
4 2.0836 0.00 0.06 0.00 -0.00
5 2.1762 0.00 0.05 0.00 -0.08
6 2.2635 0.00 0.03 0.00 0.06
7 2.2635 0.00 -0.09 0.00 -0.15
8 2.2635 0.00 0.04 0.00 0.01
9 3.2439 0.00 -0.01 0.00 -0.16
10 3.2846 0.00 0.14 0.00 -0.13
11 3.2846 0.00 0.03 0.00 -0.20
12 4.1126 0.00 -0.27 0.00 0.05
13 4.1127 0.00 0.15 0.00 0.12
14 4.1127 0.00 -0.03 0.00 0.29
15 4.1129 0.00 -0.47 0.00 0.06
16 4.1130 0.00 0.17 0.00 0.14
17 4.1783 0.00 -0.07 0.00 0.03
18 4.1784 0.00 0.05 0.00 0.12
19 4.1784 0.00 0.11 0.00 -0.06
20 4.1785 0.00 0.05 0.00 0.08
21 4.1785 0.00 -0.08 0.00 -0.11
22 4.2028 0.00 -0.07 0.00 0.04
23 4.2030 0.00 -0.00 0.00 0.08
24 4.2032 0.00 0.21 0.00 0.24
25 4.2734 0.00 0.04 0.00 -0.03
26 4.2737 0.00 -0.02 0.00 0.02
27 4.2737 0.00 0.00 0.00 0.08
28 4.2740 0.00 -0.13 0.00 0.07
29 4.2741 0.00 -0.20 0.00 -0.11
30 4.3422 0.00 -0.10 0.00 0.07
31 4.3422 0.00 0.06 0.00 0.01
32 4.3422 0.00 -0.08 0.00 0.05
33 4.4213 0.00 -0.03 0.00 0.05
34 4.4213 0.00 -0.04 0.00 -0.06
35 4.4214 0.00 0.11 0.00 -0.14
36 4.4215 0.00 0.08 0.00 -0.12
37 4.4215 0.00 0.07 0.00 0.12
38 7.2769 0.00 -0.12 0.00 -0.11
39 7.2770 0.00 0.14 0.00 -0.12
40 7.2772 0.00 0.18 0.00 -0.12
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.
15QC34 quality flag:2 Type: 5:2EEE SCATNEAR SCATNEAR axisobj 56.312 56.311 56.312 ecceobj 0.372 0.372 0.372 incobj 21.900 21.900 21.900 qmin 34.038 33.835 33.551 qmax 78.367 78.883 78.526 amean 55.462 55.474 55.455 amin 54.561 54.566 54.532 amax 56.523 56.625 56.550 emean 0.365 0.364 0.368 emin 0.350 0.339 0.352 emax 0.389 0.393 0.392 imean 20.353 20.337 20.194 imin 19.699 19.019 18.719 imax 20.708 21.349 20.711 excite_mean 0.505 0.503 0.504 fracstop 1.000 1.000 1.000 cjmean 2.911 2.914 2.912 libcent 0 179.9 -180.0 -180.0 libamp 0 170.6 -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 169.6 168.3 166.8 kozaiamp 180.0 180.0 180.0