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: 16SQ55 # Created Sun Dec 22 02:10:46 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 45 observations of 45 # Arc: 9.07y # First observation: 2013/11/04 # Last observation: 2022/11/28 # Chi-squared of fit: 17.28 DOF: 84 RMS: 0.11 # Min/Max residuals: -0.32 0.27 # Exact a, adot, b, bdot, g, gdot: 1.372757E-05 2.103287E-02 -1.880924E-06 -3.577538E-03 2.302240E-02 2.034272E-03 # Covariance matrix: 2.1692E-13 -1.0839E-13 -2.0889E-14 1.4874E-14 -3.2627E-14 -4.8428E-13 -1.0839E-13 7.4561E-14 1.6648E-14 -1.1560E-14 -8.5942E-15 3.8307E-13 -2.0889E-14 1.6648E-14 9.6730E-14 -2.3866E-14 -5.3046E-15 9.5966E-14 1.4874E-14 -1.1560E-14 -2.3866E-14 9.3833E-15 2.1657E-15 -6.6148E-14 -3.2627E-14 -8.5942E-15 -5.3046E-15 2.1657E-15 1.8120E-13 -1.0715E-13 -4.8428E-13 3.8307E-13 9.5966E-14 -6.6148E-14 -1.0715E-13 2.2034E-12 # lat0 lon0 xBary yBary zBary JD0 -15.074961 23.440860 -0.306489 -0.244910 -0.909733 2456600.551578 # Heliocentric elements and errors Epoch: 2456600.5000 = 2013/11/04 Mean Anomaly: 99.18893 +/- 0.051 Argument of Peri: 127.22850 +/- 0.041 Long of Asc Node: 147.47416 +/- 0.001 Inclination: 17.55438 +/- 0.000 Eccentricity: 0.10176345 +/- 0.0001 Semi-Major Axis: 43.22232771 +/- 0.0036 Time of Perihelion: 2428003.4417 +/- 15.2 Perihelion: 38.82387455 +/- 0.0040 Aphelion: 47.62078087 +/- 0.0046 Period (y) 284.1649 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 39.22138255 +/- 0.0007 Ecliptic Y 17.34320166 +/- 0.0003 Ecliptic Z -11.29705494 +/- 0.0002 Ecliptic XDOT -0.00088838 +/- 0.0000 Ecliptic YDOT 0.00234207 +/- 0.0000 Ecliptic ZDOT -0.00047358 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.34773251 +/- 0.0006 Geocenter to KBO 43.43594305 +/- 0.0008 # Hcoef: 6.89
The following table shows the complete astrometric record for 16SQ55. 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 (16SQ55) followed by the observatory code and reference code for the source of the astrometry.
2013 11 04.05080 01 48 55.14 -04 55 25.5 16SQ55 W84 C~3Rlw 2013 11 04.11428 01 48 54.86 -04 55 26.8 23.4r 16SQ55 W84 C~3Rlw 2013 11 04.23521 01 48 54.34 -04 55 29.1 16SQ55 W84 C~3Rlw 2014 09 25.26599 01 56 30.206 -04 22 11.62 23.0r 16SQ55 W84 C~4ybs 2014 10 23.28773 01 54 34.557 -04 35 53.40 24.0g 16SQ55 W84 C~4ybs 2014 10 23.28910 01 54 34.569 -04 35 53.64 23.1r 16SQ55 W84 C~4ybs 2014 10 23.29047 01 54 34.567 -04 35 53.49 23.2i 16SQ55 W84 C~4ybs 2014 11 28.17932 01 52 09.712 -04 45 42.22 24.0g 16SQ55 W84 C~4ybs 2014 12 16.14205 01 51 18.844 -04 45 56.45 24.0g 16SQ55 W84 C~4ybs 2014 12 16.14342 01 51 18.849 -04 45 56.33 23.6r 16SQ55 W84 C~4ybs 2014 12 16.14479 01 51 18.858 -04 45 56.38 22.4i 16SQ55 W84 C~4ybs 2015 10 10.490606 02 00 16.411 -04 14 51.07 23.1r 16SQ55 568 C~2TuW 2015 10 10.503339 02 00 16.355 -04 14 51.43 23.2r 16SQ55 568 C~2TuW 2015 10 10.590069 02 00 15.984 -04 14 54.00 23.2r 16SQ55 568 C~2TuW 2015 10 14.482071 01 59 59.571 -04 16 46.35 24.0g 16SQ55 568 C~2TuW 2015 10 14.493297 01 59 59.523 -04 16 46.67 24.1g 16SQ55 568 C~2TuW 2015 10 14.505211 01 59 59.467 -04 16 47.09 24.1g 16SQ55 568 C~2TuW 2015 10 14.565827 01 59 59.209 -04 16 48.70 24.1g 16SQ55 568 C~2TuW 2015 10 14.591882 01 59 59.095 -04 16 49.50 24.3g 16SQ55 568 C~2TuW 2015 11 15.14808 01 57 44.268 -04 28 24.50 23.3r 16SQ55 W84 C~4ybs 2015 11 15.14946 01 57 44.267 -04 28 24.53 23.0g 16SQ55 W84 C~4ybs 2015 11 15.18934 01 57 44.107 -04 28 25.14 23.0i 16SQ55 W84 C~4ybs 2016 09 05.31427 02 06 58.171 -03 41 36.25 22.5r 16SQ55 W84 C~4ybs 2016 09 10.40321 02 06 44.809 -03 44 19.13 22.8i 16SQ55 W84 C~4ybs 2016 09 11.26251 02 06 42.396 -03 44 46.87 23.0z 16SQ55 W84 C~4ybs 2016 09 27.42366 02 05 49.03 -03 53 26.7 24.2g 16SQ55 568 C~2eAH 2016 09 27.49551 02 05 48.76 -03 53 28.9 24.0g 16SQ55 568 C~2eAH 2016 09 27.54339 02 05 48.58 -03 53 30.5 24.1g 16SQ55 568 C~2eAH 2016 09 28.43258 02 05 45.27 -03 53 58.6 24.1g 16SQ55 568 C~2eAH 2016 09 28.50482 02 05 44.99 -03 54 00.8 24.3g 16SQ55 568 C~2eAH 2016 09 28.55228 02 05 44.81 -03 54 02.4 24.3g 16SQ55 568 C~2eAH 2016 09 29.44412 02 05 41.45 -03 54 30.5 24.1g 16SQ55 568 C~2eAH 2016 09 29.56380 02 05 40.98 -03 54 34.2 24.2g 16SQ55 568 C~2eAH 2016 10 03.23486 02 05 26.783 -03 56 28.47 23.2r 16SQ55 W84 C~4ybs 2017 11 01.18806 02 08 07.620 -03 54 09.74 22.9z 16SQ55 W84 C~4ybs 2017 11 15.18176 02 07 08.311 -03 58 24.33 23.5r 16SQ55 W84 C~4ybs 2017 11 15.18313 02 07 08.307 -03 58 24.36 22.9i 16SQ55 W84 C~4ybs 2018 01 05.08117 02 04 49.498 -03 57 58.00 22.5z 16SQ55 W84 C~4ybs 2018 10 21.17913 02 13 38.045 -03 34 28.28 22.5z 16SQ55 W84 C~4ybs 2018 11 15.09676 02 11 50.835 -03 43 10.26 22.9i 16SQ55 W84 C~4ybs 2018 11 29.19158 02 10 56.154 -03 45 45.86 23.4r 16SQ55 W84 C~4ybs 2018 11 29.19296 02 10 56.154 -03 45 45.90 23.9g 16SQ55 W84 C~4ybs 2022 11 28.097550 02 29 33.203 -02 44 39.25 23.4G 16SQ55 G37 C~67Cj 2022 11 28.148710 02 29 33.003 -02 44 39.52 16SQ55 G37 C~67Cj 2022 11 28.200720 02 29 32.800 -02 44 40.05 16SQ55 G37 C~67Cj
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 0.18 0.00 -0.06
2 0.0002 0.00 0.08 0.00 -0.11
3 0.0005 0.00 0.08 0.00 -0.05
4 0.8904 0.00 0.08 0.00 -0.05
5 0.9671 0.00 -0.30 0.00 0.08
6 0.9671 0.00 -0.03 0.00 -0.12
7 0.9671 0.00 0.03 0.00 0.06
8 1.0654 0.00 0.01 0.00 -0.09
9 1.1146 0.00 -0.20 0.00 -0.24
10 1.1146 0.00 -0.08 0.00 -0.13
11 1.1146 0.00 0.10 0.00 -0.19
12 1.9314 0.00 0.10 0.00 0.10
13 1.9314 0.00 0.07 0.00 0.12
14 1.9317 0.00 0.02 0.00 0.09
15 1.9423 0.00 0.02 0.00 0.12
16 1.9423 0.00 0.03 0.00 0.12
17 1.9424 0.00 -0.03 0.00 0.03
18 1.9425 0.00 0.03 0.00 0.14
19 1.9426 0.00 0.01 0.00 0.07
20 2.0290 0.00 0.00 0.00 0.00
21 2.0290 0.00 0.07 0.00 -0.01
22 2.0291 0.00 0.12 0.00 -0.04
23 2.8371 0.00 -0.01 0.00 0.27
24 2.8511 0.00 0.09 0.00 -0.04
25 2.8534 0.00 0.06 0.00 -0.13
26 2.8977 0.00 -0.18 0.00 0.09
27 2.8979 0.00 -0.15 0.00 0.17
28 2.8980 0.00 -0.12 0.00 0.08
29 2.9004 0.00 -0.08 0.00 0.10
30 2.9006 0.00 -0.12 0.00 0.18
31 2.9008 0.00 -0.09 0.00 0.08
32 2.9032 0.00 -0.06 0.00 0.06
33 2.9035 0.00 -0.15 0.00 0.12
34 2.9136 0.00 0.14 0.00 -0.06
35 3.9922 0.00 0.01 0.00 -0.09
36 4.0305 0.00 0.00 0.00 0.00
37 4.0305 0.00 0.03 0.00 -0.01
38 4.1698 0.00 0.09 0.00 -0.32
39 4.9613 0.00 0.06 0.00 -0.11
40 5.0296 0.00 0.14 0.00 0.08
41 5.0681 0.00 0.06 0.00 -0.07
42 5.0682 0.00 0.13 0.00 -0.10
43 9.0652 0.00 -0.02 0.00 -0.10
44 9.0653 0.00 -0.03 0.00 0.07
45 9.0654 0.00 -0.02 0.00 -0.02
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.
16SQ55 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.471 43.471 43.471 ecceobj 0.103 0.103 0.103 incobj 17.520 17.520 17.520 qmin 38.122 38.123 38.140 qmax 48.572 48.507 48.568 amean 43.205 43.205 43.205 amin 42.869 42.868 42.859 amax 43.583 43.586 43.583 emean 0.100 0.100 0.100 emin 0.088 0.087 0.087 emax 0.115 0.114 0.114 imean 16.591 16.591 16.591 imin 16.088 16.087 16.088 imax 17.164 17.160 17.163 excite_mean 0.303 0.303 0.303 fracstop 1.000 1.000 1.000 cjmean 2.982 2.982 2.982 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 187.8 187.7 187.8 kozaiamp 179.9 180.0 180.0