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: 15RS278
# Created Sun Dec 22 02:10:28 2024
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 30
# Arc: 4.28y
# First observation: 2015/07/14
# Last observation: 2019/10/26
Preliminary a, adot, b, bdot, g, gdot:
-0.000154 0.040911 0.000094 -0.010005 0.031848 0.000000
# Chi-squared of fit: 3.85 DOF: 54 RMS: 0.06
# Min/Max residuals: -0.17 0.15
# Exact a, adot, b, bdot, g, gdot:
1.994946E-05 3.933031E-02 -4.905248E-06 -9.594262E-03 3.106670E-02 -3.156839E-03
# Covariance matrix:
1.5688E-13 -2.9873E-14 -3.9009E-15 6.8618E-15 1.0118E-13 -1.5594E-13
-2.9873E-14 3.4693E-13 2.7778E-14 -8.9321E-14 1.5509E-13 2.2599E-12
-3.9009E-15 2.7778E-14 7.3134E-14 -3.9034E-14 9.4052E-15 2.1191E-13
6.8618E-15 -8.9321E-14 -3.9034E-14 6.6505E-14 -3.6868E-14 -6.7077E-13
1.0118E-13 1.5509E-13 9.4052E-15 -3.6868E-14 1.9589E-13 9.5339E-13
-1.5594E-13 2.2599E-12 2.1191E-13 -6.7077E-13 9.5339E-13 1.6938E-11
# lat0 lon0 xBary yBary zBary JD0
1.751636 12.065767 1.002967 0.005352 -0.171694 2457218.063999
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 351.58323 +/- 0.007
Argument of Peri: 194.34465 +/- 0.019
Long of Asc Node: 197.38991 +/- 0.000
Inclination: 13.82248 +/- 0.000
Eccentricity: 0.40923886 +/- 0.0001
Semi-Major Axis: 53.67521049 +/- 0.0052
Time of Perihelion: 2460568.6644 +/- 2.9
Perihelion: 31.70922830 +/- 0.0044
Aphelion: 75.64119269 +/- 0.0079
Period (y) 393.2501 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 31.83703895 +/- 0.0004
Ecliptic Y 5.78086399 +/- 0.0001
Ecliptic Z 0.98381084 +/- 0.0000
Ecliptic XDOT -0.00097348 +/- 0.0000
Ecliptic YDOT 0.00333053 +/- 0.0000
Ecliptic ZDOT -0.00085357 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 32.37257051 +/- 0.0004
Geocenter to KBO 32.18880645 +/- 0.0005
# Hcoef: 8.66
The following table shows the complete astrometric record for 15RS278. 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 (15RS278) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.56321 00 41 37.917 +06 22 54.83 23.9r 15RS278 568 C~2lVR 2015 07 19.54121 00 41 38.043 +06 22 43.81 24.0r 15RS278 568 C~2lVR 2015 08 13.49630 00 40 58.858 +06 17 27.02 23.9r 15RS278 568 C~2lVR 2015 08 19.55891 00 40 40.101 +06 15 08.19 23.9r 15RS278 568 C~2lVR 2015 08 19.62908 00 40 39.864 +06 15 06.77 24.2r 15RS278 568 C~2lVR 2015 08 20.43431 00 40 37.152 +06 14 46.54 23.7r 15RS278 568 C~2lVR 2015 08 20.48358 00 40 36.978 +06 14 45.21 23.7r 15RS278 568 C~2lVR 2015 09 07.58083 00 39 22.689 +06 05 42.41 24.1w 15RS278 568 C~2lVR 2015 09 09.40852 00 39 14.042 +06 04 39.30 23.7r 15RS278 568 C~2lVR 2015 09 09.44963 00 39 13.845 +06 04 37.87 23.9r 15RS278 568 C~2lVR 2015 09 09.49055 00 39 13.644 +06 04 36.45 24.0r 15RS278 568 C~2lVR 2015 09 10.51481 00 39 08.711 +06 04 00.33 23.9w 15RS278 568 C~2lVR 2015 10 03.39699 00 37 09.137 +05 49 17.86 23.6w 15RS278 568 C~2lVR 2015 10 07.36274 00 36 47.636 +05 46 36.42 23.2r 15RS278 568 C~2lVR 2015 10 07.41585 00 36 47.345 +05 46 34.27 23.7r 15RS278 568 C~2lVR 2015 11 07.26021 00 34 14.911 +05 26 39.81 23.9w 15RS278 568 C~2lVR 2015 11 07.31308 00 34 14.682 +05 26 38.04 23.4w 15RS278 568 C~2lVR 2015 11 10.39917 00 34 02.254 +05 24 53.75 23.9w 15RS278 568 C~2lVR 2015 12 07.33665 00 32 50.190 +05 13 21.14 24.1w 15RS278 568 C~2lVR 2016 01 01.26556 00 32 54.075 +05 10 00.88 23.8w 15RS278 568 C~2lVR 2016 09 05.59118 00 48 54.863 +06 29 16.83 15RS278 568 C~2lVR 2016 09 06.54027 00 48 50.564 +06 28 45.21 15RS278 568 C~2lVR 2016 09 06.58238 00 48 50.364 +06 28 43.75 15RS278 568 C~2lVR 2016 09 27.49689 00 47 04.836 +06 15 47.36 23.8w 15RS278 568 C~2lVR 2016 11 04.30057 00 43 48.345 +05 50 58.64 15RS278 568 C~2lVR 2016 11 04.35961 00 43 48.065 +05 50 56.52 15RS278 568 C~2lVR 2016 12 29.28720 00 42 00.386 +05 32 27.92 24.1w 15RS278 568 C~2lVR 2017 01 02.32226 00 42 05.721 +05 32 29.82 23.9w 15RS278 568 C~2lVR 2019 10 26.120920 01 13 25.024 +07 03 32.39 23.7G 15RS278 G37 C~3ctg 2019 10 26.189080 01 13 24.651 +07 03 29.62 15RS278 G37 C~3ctg
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 0.01 0.00 0.00
2 0.0136 -2.58 0.14 -10.88 -0.02
3 0.0820 -664.17 0.07 -73.63 -0.12
4 0.0986 -975.88 -0.17 -91.79 -0.10
5 0.0987 -979.69 0.04 -91.71 0.15
6 0.1009 -1024.82 0.03 -94.48 0.04
7 0.1011 -1027.73 -0.02 -94.69 -0.04
8 0.1506 -2259.81 -0.13 -159.59 -0.01
9 0.1556 -2403.22 -0.09 -167.02 0.12
10 0.1557 -2406.48 -0.03 -167.18 0.10
11 0.1559 -2409.80 -0.03 -167.31 0.11
12 0.1587 -2491.66 0.02 -171.66 0.01
13 0.2213 -4479.47 0.04 -282.24 -0.00
14 0.2322 -4838.16 0.00 -304.45 -0.02
15 0.2323 -4843.00 0.04 -304.72 -0.02
16 0.3168 -7407.40 0.02 -506.22 -0.05
17 0.3169 -7411.25 -0.02 -506.50 0.02
18 0.3254 -7623.20 0.01 -529.14 -0.01
19 0.3991 -8887.56 0.04 -740.86 -0.03
20 0.4674 -8913.40 0.01 -947.96 -0.06
21 1.1472 6148.72 0.04 -2187.54 -0.05
22 1.1498 6077.33 0.01 -2191.80 0.03
23 1.1499 6074.02 -0.05 -2191.99 0.01
24 1.2072 4321.59 -0.02 -2295.86 -0.11
25 1.3107 1041.40 0.11 -2524.33 -0.05
26 1.3109 1036.73 -0.01 -2524.65 -0.02
27 1.4613 -876.12 -0.06 -2916.90 0.03
28 1.4723 -802.07 -0.04 -2946.32 0.05
29 4.2835 27341.43 0.03 -8715.67 0.08
30 4.2837 27335.13 -0.03 -8716.14 -0.05
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.
15RS278 quality flag:3 Type: 12:5EEEEEE12:5EEEEEE12:5EEEEEE axisobj 54.493 54.507 54.479 ecceobj 0.418 0.418 0.418 incobj 13.772 13.772 13.772 qmin 31.240 31.260 31.275 qmax 77.814 77.808 77.774 amean 53.973 53.973 53.973 amin 53.359 53.344 53.318 amax 54.809 54.794 54.821 emean 0.406 0.406 0.406 emin 0.393 0.393 0.394 emax 0.421 0.421 0.420 imean 14.493 14.508 14.482 imin 13.824 13.825 13.823 imax 15.148 15.133 15.044 excite_mean 0.477 0.477 0.477 fracstop 1.000 1.000 1.000 cjmean 2.927 2.927 2.926 libcent 0 178.0 177.5 177.9 libamp 0 60.5 56.6 77.1 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 196.7 197.5 204.1 kozaiamp 180.0 179.9 180.0