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: 16AN278 # Created Wed Dec 25 02:10:34 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 44 observations of 44 # Arc: 9.14y # First observation: 2013/12/30 # Last observation: 2023/02/20 # Chi-squared of fit: 19.71 DOF: 82 RMS: 0.12 # Min/Max residuals: -0.26 0.33 # Exact a, adot, b, bdot, g, gdot: 1.933980E-05 3.188422E-02 -3.983649E-07 3.178550E-04 2.790186E-02 3.389025E-04 # Covariance matrix: 2.1274E-13 -1.0944E-13 1.4513E-15 -1.8647E-15 6.2260E-14 -3.3014E-13 -1.0944E-13 9.5776E-14 -1.6367E-15 1.2143E-15 3.2413E-14 3.3104E-13 1.4513E-15 -1.6367E-15 7.2691E-14 -1.4804E-14 -1.2172E-15 -6.1191E-15 -1.8647E-15 1.2143E-15 -1.4804E-14 5.5945E-15 -9.5870E-16 4.2064E-15 6.2260E-14 3.2413E-14 -1.2172E-15 -9.5870E-16 2.3911E-13 1.5969E-13 -3.3014E-13 3.3104E-13 -6.1191E-15 4.2064E-15 1.5969E-13 1.2222E-12 # lat0 lon0 xBary yBary zBary JD0 -7.125445 104.957895 0.108841 -0.120812 -0.967449 2456656.871088 # Heliocentric elements and errors Epoch: 2456656.5000 = 2013/12/30 Mean Anomaly: 1.45760 +/- 0.007 Argument of Peri: 272.14486 +/- 0.011 Long of Asc Node: 190.25555 +/- 0.001 Inclination: 6.95833 +/- 0.000 Eccentricity: 0.22301891 +/- 0.0001 Semi-Major Axis: 47.36855018 +/- 0.0046 Time of Perihelion: 2456174.3639 +/- 2.2 Perihelion: 36.80446774 +/- 0.0047 Aphelion: 57.93263262 +/- 0.0064 Period (y) 326.0193 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -9.32730371 +/- 0.0002 Ecliptic Y 35.33020459 +/- 0.0006 Ecliptic Z -4.44570621 +/- 0.0001 Ecliptic XDOT -0.00303819 +/- 0.0000 Ecliptic YDOT -0.00077422 +/- 0.0000 Ecliptic ZDOT 0.00002696 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.81013308 +/- 0.0006 Geocenter to KBO 35.83993435 +/- 0.0006 # Hcoef: 6.95
The following table shows the complete astrometric record for 16AN278. 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 (16AN278) followed by the observatory code and reference code for the source of the astrometry.
2013 12 30.37031 07 01 39.536 +15 31 01.22 22.2G 16AN278 F51 C~347c 2013 12 30.38554 07 01 39.464 +15 31 01.28 22.3G 16AN278 F51 C~347c 2013 12 30.40070 07 01 39.384 +15 31 01.48 22.3G 16AN278 F51 C~347c 2013 12 30.41591 07 01 39.291 +15 31 01.43 22.5G 16AN278 F51 C~347c 2014 01 10.33746 07 00 37.311 +15 32 37.07 22.8G 16AN278 F51 C~347c 2015 01 21.32858 07 07 11.015 +15 23 42.83 22.4G 16AN278 F51 C~347c 2015 01 21.34107 07 07 10.939 +15 23 42.93 22.1G 16AN278 F51 C~347c 2015 01 21.35357 07 07 10.893 +15 23 42.95 22.1G 16AN278 F51 C~347c 2015 01 21.36606 07 07 10.813 +15 23 43.06 22.3G 16AN278 F51 C~347c 2015 01 21.45061 07 07 10.347 +15 23 44.23 22.5G 16AN278 F51 C~347c 2015 01 21.46340 07 07 10.267 +15 23 44.36 22.4G 16AN278 F51 C~347c 2015 01 21.47620 07 07 10.213 +15 23 44.48 22.1G 16AN278 F51 C~347c 2015 01 21.48912 07 07 10.144 +15 23 44.48 23.1G 16AN278 F51 C~347c 2015 02 19.23498 07 04 56.027 +15 30 24.08 22.4G 16AN278 F51 C~347c 2015 02 19.24702 07 04 55.970 +15 30 24.09 22.7G 16AN278 F51 C~347c 2015 02 19.25908 07 04 55.928 +15 30 24.37 22.6G 16AN278 F51 C~347c 2015 02 19.27112 07 04 55.866 +15 30 24.52 22.1G 16AN278 F51 C~347c 2016 01 12.33359 07 15 34.314 +15 09 59.91 22.2G 16AN278 F51 C~347c 2016 01 12.34542 07 15 34.261 +15 09 59.80 22.3G 16AN278 F51 C~347c 2016 01 12.35720 07 15 34.183 +15 10 00.08 22.7G 16AN278 F51 C~347c 2016 01 12.36903 07 15 34.123 +15 10 00.12 22.7G 16AN278 F51 C~347c 2016 01 31.31378 07 13 51.323 +15 14 09.39 22.3G 16AN278 F51 C~347c 2016 01 31.33770 07 13 51.206 +15 14 09.75 22.5G 16AN278 F51 C~347c 2016 01 31.34980 07 13 51.137 +15 14 10.11 22.2G 16AN278 F51 C~347c 2016 02 10.27542 07 13 03.465 +15 16 37.05 22.4G 16AN278 F51 C~347c 2016 02 10.28842 07 13 03.396 +15 16 37.14 21.8G 16AN278 F51 C~347c 2016 02 10.30162 07 13 03.344 +15 16 37.29 22.4G 16AN278 F51 C~347c 2016 02 10.31494 07 13 03.289 +15 16 37.62 22.6G 16AN278 F51 C~347c 2016 02 12.27946 07 12 54.626 +15 17 07.25 22.1G 16AN278 F51 C~347c 2016 02 12.29136 07 12 54.547 +15 17 07.55 22.9G 16AN278 F51 C~347c 2016 02 12.30336 07 12 54.486 +15 17 07.52 22.1G 16AN278 F51 C~347c 2016 02 12.31540 07 12 54.435 +15 17 07.99 21.9G 16AN278 F51 C~347c 2017 01 26.44416 07 21 42.541 +15 00 31.40 23.0G 16AN278 F51 C~347c 2017 01 26.45478 07 21 42.474 +15 00 31.31 22.7G 16AN278 F51 C~347c 2017 01 26.46541 07 21 42.413 +15 00 31.71 22.7G 16AN278 F51 C~347c 2017 01 26.47604 07 21 42.356 +15 00 31.76 22.4G 16AN278 F51 C~347c 2020 09 29.61017 07 56 02.993 +14 01 35.57 22.6w 16AN278 F51 C~4AIt 2020 09 29.61921 07 56 03.016 +14 01 35.22 22.4w 16AN278 F51 C~4AIt 2020 09 29.62373 07 56 03.035 +14 01 35.39 22.6w 16AN278 F51 C~4AIt 2020 12 09.410030 07 55 27.631 +13 51 41.05 22.7G 16AN278 G37 C~4UKB 2020 12 09.461500 07 55 27.405 +13 51 41.08 16AN278 G37 C~4UKB 2020 12 09.506160 07 55 27.238 +13 51 41.19 16AN278 G37 C~4UKB 2023 02 20.183150 08 03 55.278 +13 34 53.92 22.4G 16AN278 G37 C~6EoZ 2023 02 20.228890 08 03 55.072 +13 34 54.77 16AN278 G37 C~6EoZ
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 -0.26 0.00 0.15
2 0.0000 0.00 -0.03 0.00 0.09
3 0.0001 0.00 0.08 0.00 0.17
4 0.0001 0.00 -0.00 0.00 0.00
5 0.0300 0.00 -0.01 0.00 -0.01
6 1.0594 0.00 -0.10 0.00 0.08
7 1.0595 0.00 -0.20 0.00 0.02
8 1.0595 0.00 0.14 0.00 -0.11
9 1.0595 0.00 -0.02 0.00 -0.16
10 1.0598 0.00 0.00 0.00 -0.04
11 1.0598 0.00 -0.14 0.00 -0.07
12 1.0598 0.00 0.11 0.00 -0.11
13 1.0599 0.00 0.14 0.00 -0.26
14 1.1386 0.00 0.24 0.00 0.13
15 1.1386 0.00 0.06 0.00 -0.04
16 1.1386 0.00 0.10 0.00 0.06
17 1.1387 0.00 -0.15 0.00 0.04
18 2.0341 0.00 -0.02 0.00 0.18
19 2.0342 0.00 0.20 0.00 -0.07
20 2.0342 0.00 0.04 0.00 0.07
21 2.0342 0.00 0.16 0.00 -0.03
22 2.0861 0.00 -0.08 0.00 -0.04
23 2.0862 0.00 0.02 0.00 -0.03
24 2.0862 0.00 -0.07 0.00 0.15
25 2.1134 0.00 -0.03 0.00 0.09
26 2.1134 0.00 -0.17 0.00 -0.02
27 2.1134 0.00 -0.04 0.00 -0.07
28 2.1135 0.00 0.05 0.00 0.05
29 2.1188 0.00 0.33 0.00 -0.11
30 2.1189 0.00 -0.07 0.00 0.01
31 2.1189 0.00 -0.18 0.00 -0.21
32 2.1189 0.00 -0.14 0.00 0.08
33 3.0748 0.00 0.10 0.00 0.07
34 3.0748 0.00 -0.04 0.00 -0.18
35 3.0749 0.00 -0.10 0.00 0.07
36 3.0749 0.00 -0.09 0.00 -0.04
37 6.7495 0.00 0.16 0.00 0.05
38 6.7495 0.00 0.07 0.00 -0.13
39 6.7495 0.00 0.13 0.00 0.13
40 6.9433 0.00 -0.03 0.00 0.24
41 6.9434 0.00 -0.26 0.00 0.04
42 6.9436 0.00 -0.02 0.00 -0.05
43 9.1412 0.00 -0.00 0.00 -0.03
44 9.1413 0.00 0.04 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.
16AN278 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 47.350 47.350 47.350 ecceobj 0.222 0.222 0.222 incobj 6.952 6.952 6.952 qmin 35.779 35.786 35.750 qmax 58.855 58.855 58.942 amean 47.030 47.037 47.038 amin 46.594 46.618 46.597 amax 47.609 47.606 47.625 emean 0.219 0.219 0.219 emin 0.202 0.202 0.202 emax 0.238 0.237 0.239 imean 7.492 7.487 7.486 imin 6.625 6.603 6.596 imax 8.603 8.600 8.597 excite_mean 0.255 0.255 0.255 fracstop 1.000 1.000 1.000 cjmean 3.058 3.058 3.058 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 180.7 180.8 181.0 kozaiamp 180.0 180.0 179.9