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: 16SS55 # Created Sat Apr 27 01:18:07 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 62 observations of 62 # Arc: 5.16y # First observation: 2013/10/03 # Last observation: 2018/12/01 # Chi-squared of fit: 12.71 DOF: 118 RMS: 0.08 # Min/Max residuals: -0.26 0.28 # Exact a, adot, b, bdot, g, gdot: 1.560656E-05 2.333199E-02 -6.837217E-06 -1.120124E-02 2.367868E-02 7.358131E-03 # Covariance matrix: 1.5315E-13 -5.8760E-14 -1.7402E-14 2.0517E-14 7.0268E-14 -3.8924E-13 -5.8760E-14 8.4480E-14 2.4911E-14 -4.2333E-14 1.9984E-14 8.3664E-13 -1.7402E-14 2.4911E-14 8.7990E-14 -3.6304E-14 -9.9692E-16 2.7509E-13 2.0517E-14 -4.2333E-14 -3.6304E-14 3.2897E-14 -1.1169E-14 -4.6995E-13 7.0268E-14 1.9984E-14 -9.9692E-16 -1.1169E-14 1.1886E-13 2.4382E-13 -3.8924E-13 8.3664E-13 2.7509E-13 -4.6995E-13 2.4382E-13 9.2924E-12 # lat0 lon0 xBary yBary zBary JD0 -12.911266 27.583476 0.303839 -0.212914 -0.929306 2456568.794858 # Heliocentric elements and errors Epoch: 2456568.5000 = 2013/10/03 Mean Anomaly: 16.46076 +/- 0.006 Argument of Peri: 158.47108 +/- 0.011 Long of Asc Node: 182.80616 +/- 0.000 Inclination: 28.50262 +/- 0.000 Eccentricity: 0.47693544 +/- 0.0001 Semi-Major Axis: 73.42680958 +/- 0.0154 Time of Perihelion: 2446060.3102 +/- 4.9 Perihelion: 38.40696216 +/- 0.0130 Aphelion: 108.44665700 +/- 0.0250 Period (y) 629.2021 +/- 0.20 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 37.47039775 +/- 0.0005 Ecliptic Y 19.23590157 +/- 0.0003 Ecliptic Z -9.43672813 +/- 0.0001 Ecliptic XDOT -0.00077682 +/- 0.0000 Ecliptic YDOT 0.00263976 +/- 0.0000 Ecliptic ZDOT -0.00145236 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.16347128 +/- 0.0005 Geocenter to KBO 42.23191028 +/- 0.0006 # Hcoef: 6.55
The following table shows the complete astrometric record for 16SS55. 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 (16SS55) followed by the observatory code and reference code for the source of the astrometry.
2013 10 03.29408 02 00 49.810 -01 27 34.89 23.5g 16SS55 W84 C~4ybs 2013 10 03.29408 02 00 49.81 -01 27 34.9 23.8g 16SS55 W84 C~3cyk 2013 10 27.14536 01 59 09.736 -01 40 21.21 23.8g 16SS55 W84 C~4ybs 2013 11 12.18492 01 58 02.109 -01 47 07.57 22.6z 16SS55 W84 C~4ybs 2013 11 12.18492 01 58 02.11 -01 47 07.6 22.7z 16SS55 W84 C~3cyk 2013 11 23.19984 01 57 19.753 -01 50 34.66 22.6i 16SS55 W84 C~4ybs 2013 11 23.19984 01 57 19.75 -01 50 34.6 22.7i 16SS55 W84 C~3cyk 2013 11 23.20121 01 57 19.753 -01 50 34.56 21.8z 16SS55 W84 C~4ybs 2013 11 23.20121 01 57 19.75 -01 50 34.6 22.3z 16SS55 W84 C~3cyk 2013 12 28.10992 01 55 51.231 -01 53 45.97 22.9r 16SS55 W84 C~4ybs 2013 12 28.10992 01 55 51.23 -01 53 46.0 23.0r 16SS55 W84 C~3cyk 2013 12 28.11131 01 55 51.229 -01 53 46.06 22.6i 16SS55 W84 C~4ybs 2013 12 28.11131 01 55 51.23 -01 53 46.1 22.7i 16SS55 W84 C~3cyk 2014 08 18.37317 02 08 40.394 -01 09 17.09 23.1z 16SS55 W84 C~4ybs 2014 10 23.29611 02 05 20.405 -01 45 59.27 22.6i 16SS55 W84 C~4ybs 2014 10 23.29611 02 05 20.40 -01 45 59.3 22.9i 16SS55 W84 C~3cyk 2014 11 28.182975 02 02 55.15 -01 59 15.5 23.5g 16SS55 W84 C~352t 2014 11 28.18350 02 02 55.148 -01 59 15.61 23.8g 16SS55 W84 C~4ybs 2014 12 26.06893 02 01 43.445 -02 01 24.51 22.5i 16SS55 W84 C~4ybs 2014 12 26.06893 02 01 43.44 -02 01 24.5 22.7i 16SS55 W84 C~3cyk 2015 01 14.06383 02 01 29.356 -01 58 27.79 23.0r 16SS55 W84 C~4ybs 2015 01 14.06383 02 01 29.36 -01 58 27.8 23.1r 16SS55 W84 C~3cyk 2015 01 19.05354 02 01 30.928 -01 57 08.76 23.9g 16SS55 W84 C~4ybs 2015 01 19.05354 02 01 30.93 -01 57 08.8 23.9g 16SS55 W84 C~3cyk 2015 12 04.063368 02 08 22.95 -02 07 42.5 22.7i 16SS55 W84 C~352t 2015 12 04.06390 02 08 22.947 -02 07 42.51 22.8i 16SS55 W84 C~4ybs 2016 09 25.26803 02 18 37.692 -01 45 44.35 23.5g 16SS55 W84 C~4ybs 2016 09 25.26803 02 18 37.69 -01 45 44.3 23.5g 16SS55 W84 C~3cyk 2016 09 27.42649 02 18 30.29 -01 46 59.8 23.5g 16SS55 568 C~2eAH 2016 09 27.49838 02 18 30.03 -01 47 02.2 23.6g 16SS55 568 C~2eAH 2016 09 27.54623 02 18 29.86 -01 47 03.9 23.6g 16SS55 568 C~2eAH 2016 09 28.43544 02 18 26.76 -01 47 34.8 23.5g 16SS55 568 C~2eAH 2016 09 28.50767 02 18 26.50 -01 47 37.3 23.6g 16SS55 568 C~2eAH 2016 09 28.55513 02 18 26.33 -01 47 38.9 23.6g 16SS55 568 C~2eAH 2016 09 29.56664 02 18 22.73 -01 48 14.0 23.6g 16SS55 568 C~2eAH 2016 10 27.21542 02 16 31.420 -02 02 56.88 22.7r 16SS55 W84 C~4ybs 2016 10 27.21542 02 16 31.42 -02 02 56.9 22.8r 16SS55 W84 C~3cyk 2016 11 27.11136 02 14 25.606 -02 13 47.13 23.0g 16SS55 W84 C~4ybs 2016 11 27.11136 02 14 25.61 -02 13 47.0 23.3g 16SS55 W84 C~3cyk 2016 11 29.17841 02 14 18.27 -02 14 12.6 22.5r 16SS55 W84 C~3cyk 2016 12 05.17833 02 13 58.135 -02 15 12.81 22.6i 16SS55 W84 C~4ybs 2016 12 05.17833 02 13 58.13 -02 15 12.8 22.9i 16SS55 W84 C~3cyk 2016 12 05.17971 02 13 58.123 -02 15 12.85 23.5g 16SS55 W84 C~4ybs 2016 12 05.17971 02 13 58.12 -02 15 12.8 23.6g 16SS55 W84 C~3cyk 2017 10 29.271227 02 22 00.87 -02 10 55.3 23.0r 16SS55 W84 C~352t 2017 10 29.27175 02 22 00.873 -02 10 55.34 22.8r 16SS55 W84 C~4ybs 2017 10 29.272593 02 22 00.86 -02 10 55.5 22.6i 16SS55 W84 C~352t 2017 10 29.27312 02 22 00.863 -02 10 55.44 22.5i 16SS55 W84 C~4ybs 2017 10 29.273970 02 22 00.87 -02 10 55.5 23.6g 16SS55 W84 C~352t 2017 10 29.27450 02 22 00.863 -02 10 55.40 23.5g 16SS55 W84 C~4ybs 2017 11 23.161157 02 20 17.98 -02 19 51.9 22.7i 16SS55 W84 C~352t 2017 11 23.16169 02 20 17.979 -02 19 51.82 22.7i 16SS55 W84 C~4ybs 2017 11 23.162558 02 20 17.97 -02 19 51.8 23.0r 16SS55 W84 C~352t 2017 11 23.16309 02 20 17.972 -02 19 51.88 23.0r 16SS55 W84 C~4ybs 2017 11 23.163935 02 20 17.97 -02 19 51.8 24.0g 16SS55 W84 C~352t 2017 11 23.16446 02 20 17.974 -02 19 51.91 23.6g 16SS55 W84 C~4ybs 2017 12 15.119456 02 19 05.43 -02 23 06.3 20.9z 16SS55 W84 C~352t 2018 11 16.22466 02 26 18.610 -02 24 41.85 22.7i 16SS55 W84 C~4ybs 2018 11 29.19983 02 25 28.235 -02 28 02.24 23.4g 16SS55 W84 C~4ybs 2018 11 29.20119 02 25 28.229 -02 28 02.23 23.1r 16SS55 W84 C~4ybs 2018 12 01.06787 02 25 21.517 -02 28 23.30 23.0r 16SS55 W84 C~4ybs 2018 12 01.06924 02 25 21.511 -02 28 23.18 23.7g 16SS55 W84 C~4ybs
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 0.04 0.00 -0.13
2 0.0000 0.00 0.04 0.00 -0.14
3 0.0653 0.00 -0.08 0.00 0.11
4 0.1092 0.00 -0.06 0.00 0.03
5 0.1092 0.00 -0.07 0.00 0.06
6 0.1394 0.00 -0.05 0.00 0.05
7 0.1394 0.00 -0.00 0.00 -0.01
8 0.1394 0.00 0.03 0.00 0.07
9 0.1394 0.00 0.07 0.00 0.11
10 0.2350 0.00 -0.05 0.00 -0.02
11 0.2350 0.00 -0.04 0.00 0.01
12 0.2350 0.00 -0.03 0.00 -0.13
13 0.2350 0.00 -0.04 0.00 -0.09
14 0.8736 0.00 0.12 0.00 0.04
15 1.0541 0.00 0.05 0.00 0.04
16 1.0541 0.00 -0.02 0.00 0.01
17 1.1523 0.00 -0.03 0.00 0.07
18 1.1523 0.00 -0.04 0.00 -0.04
19 1.2287 0.00 0.01 0.00 -0.00
20 1.2287 0.00 0.09 0.00 -0.01
21 1.2807 0.00 0.11 0.00 -0.03
22 1.2807 0.00 0.05 0.00 -0.02
23 1.2943 0.00 0.07 0.00 -0.01
24 1.2943 0.00 0.04 0.00 0.03
25 2.1677 0.00 0.02 0.00 0.02
26 2.1677 0.00 -0.00 0.00 0.01
27 2.9787 0.00 0.18 0.00 0.16
28 2.9787 0.00 0.21 0.00 0.11
29 2.9846 0.00 -0.10 0.00 -0.01
30 2.9848 0.00 -0.17 0.00 0.09
31 2.9849 0.00 -0.17 0.00 0.05
32 2.9874 0.00 -0.06 0.00 0.02
33 2.9876 0.00 -0.06 0.00 0.02
34 2.9877 0.00 -0.04 0.00 0.07
35 2.9905 0.00 -0.09 0.00 -0.01
36 3.0662 0.00 -0.03 0.00 -0.07
37 3.0662 0.00 -0.03 0.00 -0.05
38 3.1508 0.00 -0.08 0.00 -0.13
39 3.1508 0.00 -0.14 0.00 -0.26
40 3.1564 0.00 0.28 0.00 -0.06
41 3.1729 0.00 0.02 0.00 0.03
42 3.1729 0.00 0.10 0.00 0.02
43 3.1729 0.00 -0.06 0.00 0.04
44 3.1729 0.00 -0.02 0.00 -0.01
45 4.0711 0.00 -0.01 0.00 0.08
46 4.0711 0.00 0.07 0.00 0.06
47 4.0711 0.00 -0.07 0.00 -0.08
48 4.0711 0.00 0.01 0.00 -0.01
49 4.0711 0.00 0.17 0.00 -0.04
50 4.0711 0.00 0.10 0.00 0.07
51 4.1393 0.00 -0.00 0.00 -0.08
52 4.1393 0.00 0.01 0.00 0.00
53 4.1393 0.00 -0.07 0.00 0.04
54 4.1393 0.00 -0.01 0.00 -0.04
55 4.1393 0.00 0.01 0.00 0.06
56 4.1393 0.00 0.10 0.00 -0.04
57 4.1994 0.00 -0.11 0.00 0.17
58 5.1196 0.00 0.03 0.00 -0.07
59 5.1551 0.00 0.02 0.00 -0.07
60 5.1551 0.00 0.01 0.00 -0.04
61 5.1602 0.00 0.01 0.00 -0.03
62 5.1602 0.00 -0.00 0.00 0.11
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.
16SS55 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 74.246 74.246 74.246 ecceobj 0.483 0.483 0.483 incobj 28.431 28.431 28.431 qmin 36.599 36.551 36.596 qmax 111.637 111.189 111.741 amean 73.199 73.200 73.192 amin 72.227 72.263 72.196 amax 74.535 74.453 74.544 emean 0.480 0.480 0.480 emin 0.464 0.464 0.464 emax 0.499 0.498 0.499 imean 27.853 27.851 27.865 imin 27.031 27.020 27.039 imax 28.659 28.661 28.658 excite_mean 0.670 0.670 0.670 fracstop 1.000 1.000 1.000 cjmean 2.829 2.829 2.829 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 203.8 203.5 204.7 kozaiamp 180.0 180.0 180.0