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: 15RD277
# Created Sun Dec 22 02:10:27 2024
# Orbit generated from Bernstein formalism
# Fitting 33 observations of 33
# Arc: 2.35y
# First observation: 2015/07/19
# Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
0.000347 0.088708 0.000064 0.029885 0.057077 0.000000
# Chi-squared of fit: 6.58 DOF: 60 RMS: 0.08
# Min/Max residuals: -0.33 0.30
# Exact a, adot, b, bdot, g, gdot:
2.475718E-05 8.609990E-02 8.646587E-06 2.947051E-02 5.502922E-02 6.552271E-03
# Covariance matrix:
2.1824E-13 2.5182E-14 -6.5732E-15 2.6254E-14 1.6580E-13 4.5596E-13
2.5182E-14 5.2856E-13 -4.9688E-14 2.1312E-13 2.5312E-13 3.5098E-12
-6.5732E-15 -4.9688E-14 9.2456E-14 -8.6926E-14 -2.5194E-14 -4.0277E-13
2.6254E-14 2.1312E-13 -8.6926E-14 1.9325E-13 1.0610E-13 1.7317E-12
1.6580E-13 2.5312E-13 -2.5194E-14 1.0610E-13 2.6230E-13 1.7712E-12
4.5596E-13 3.5098E-12 -4.0277E-13 1.7317E-12 1.7712E-12 2.8468E-11
# lat0 lon0 xBary yBary zBary JD0
0.001382 8.651167 0.968609 0.000108 -0.311778 2457223.003419
# Heliocentric elements and errors
Epoch: 2457220.5000 = 2015/07/17
Mean Anomaly: 2.96559 +/- 0.008
Argument of Peri: 354.39847 +/- 0.015
Long of Asc Node: 5.64706 +/- 0.000
Inclination: 18.87493 +/- 0.000
Eccentricity: 0.28616469 +/- 0.0000
Semi-Major Axis: 25.89685238 +/- 0.0011
Time of Perihelion: 2456823.9681 +/- 1.0
Perihelion: 18.48608774 +/- 0.0011
Aphelion: 33.30761701 +/- 0.0016
Period (y) 131.7889 +/- 0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 18.41579595 +/- 0.0002
Ecliptic Y 1.82286333 +/- 0.0000
Ecliptic Z 0.00064849 +/- 0.0000
Ecliptic XDOT -0.00032434 +/- 0.0000
Ecliptic YDOT 0.00427770 +/- 0.0000
Ecliptic ZDOT 0.00146631 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 18.50579292 +/- 0.0002
Geocenter to KBO 18.17216231 +/- 0.0002
# Hcoef: 10.62
The following table shows the complete astrometric record for 15RD277. 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 (15RD277) followed by the observatory code and reference code for the source of the astrometry.
2015 07 19.50263 00 31 47.104 +03 25 53.38 23.6r 15RD277 568 C~2ji9 2015 08 11.48475 00 30 33.324 +03 25 03.89 23.5r 15RD277 568 C~2ji9 2015 08 11.52861 00 30 33.091 +03 25 03.29 23.5r 15RD277 568 C~2ji9 2015 09 08.38448 00 27 12.179 +03 12 19.46 23.2r 15RD277 568 C~2ji9 2015 09 08.48868 00 27 11.235 +03 12 15.58 23.3r 15RD277 568 C~2ji9 2015 09 08.53090 00 27 10.856 +03 12 14.00 23.3r 15RD277 568 C~2ji9 2015 09 09.50777 00 27 02.196 +03 11 36.78 23.5w 15RD277 568 C~2ji9 2015 09 10.44878 00 26 53.788 +03 11 00.49 23.5w 15RD277 568 C~2ji9 2015 09 16.43207 00 25 58.741 +03 06 59.83 23.4w 15RD277 568 C~2ji9 2015 10 03.35878 00 23 15.304 +02 54 45.23 23.1w 15RD277 568 C~2ji9 2015 10 07.32768 00 22 36.815 +02 51 50.68 23.1r 15RD277 568 C~2ji9 2015 10 07.37988 00 22 36.310 +02 51 48.48 23.0r 15RD277 568 C~2ji9 2015 10 07.38724 00 22 36.224 +02 51 48.08 23.2r 15RD277 568 C~2ji9 2015 11 05.24319 00 18 26.563 +02 33 33.91 23.5w 15RD277 568 C~2ji9 2015 11 07.21299 00 18 12.785 +02 32 38.79 23.6w 15RD277 568 C~2ji9 2015 11 07.26547 00 18 12.413 +02 32 37.41 23.7w 15RD277 568 C~2ji9 2015 11 08.31016 00 18 05.329 +02 32 09.50 23.5w 15RD277 568 C~2ji9 2015 11 08.37107 00 18 04.897 +02 32 08.11 23.3w 15RD277 568 C~2ji9 2015 11 10.33047 00 17 52.076 +02 31 18.80 24.3w 15RD277 568 C~2ji9 2015 11 10.34251 00 17 52.010 +02 31 18.44 23.6w 15RD277 568 C~2ji9 2016 09 05.50664 00 43 31.605 +06 48 53.34 23.6w 15RD277 568 C~2ji9 2016 09 06.46082 00 43 23.696 +06 48 24.14 23.5w 15RD277 568 C~2ji9 2016 09 06.50211 00 43 23.344 +06 48 22.84 23.4w 15RD277 568 C~2ji9 2016 10 26.40787 00 35 35.540 +06 14 25.71 23.4r 15RD277 568 C~2ji9 2016 10 26.47363 00 35 34.957 +06 14 23.04 23.2r 15RD277 568 C~2ji9 2016 11 03.40304 00 34 29.034 +06 09 17.68 15RD277 568 C~2ji9 2016 11 03.46810 00 34 28.544 +06 09 15.22 23.5w 15RD277 568 C~2ji9 2016 12 25.25214 00 31 25.442 +05 59 09.85 23.7w 15RD277 568 C~2ji9 2017 01 02.29442 00 31 44.259 +06 02 21.24 23.6w 15RD277 568 C~2ji9 2017 01 30.23419 00 34 27.710 +06 23 54.96 23.7w 15RD277 568 C~2ji9 2017 09 16.49073 00 58 05.983 +10 14 41.46 23.1w 15RD277 568 C~2ji9 2017 09 22.43860 00 57 11.457 +10 11 19.87 23.4w 15RD277 568 C~2ji9 2017 11 22.33458 00 48 15.982 +09 30 25.10 23.6w 15RD277 568 C~2ji9
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 -0.00 0.00 -0.04
2 0.0629 -1034.83 -0.04 389.90 0.00
3 0.0630 -1038.27 0.05 390.72 0.02
4 0.1393 -4104.72 -0.02 876.33 -0.01
5 0.1396 -4119.24 -0.08 878.35 0.06
6 0.1397 -4125.09 -0.04 879.15 0.07
7 0.1424 -4258.99 -0.02 896.20 0.01
8 0.1450 -4389.07 0.02 912.62 -0.00
9 0.1613 -5242.00 -0.03 1017.44 -0.03
10 0.2077 -7783.70 -0.04 1311.57 -0.04
11 0.2185 -8383.23 0.04 1379.70 -0.05
12 0.2187 -8391.06 0.19 1380.68 -0.03
13 0.2187 -8392.41 -0.03 1380.82 -0.02
14 0.2977 -12270.45 -0.01 1860.40 -0.04
15 0.3031 -12482.62 0.07 1891.84 -0.10
16 0.3033 -12488.31 0.04 1892.79 -0.04
17 0.3061 -12597.23 0.05 1909.36 -0.18
18 0.3063 -12603.75 -0.04 1910.65 0.08
19 0.3116 -12800.43 -0.12 1941.75 0.14
20 0.3117 -12801.49 0.04 1941.82 0.00
21 1.1335 14486.09 0.05 7092.88 0.02
22 1.1361 14365.59 0.01 7111.83 0.00
23 1.1362 14360.23 0.01 7112.67 -0.03
24 1.2728 7123.06 0.02 7961.17 0.04
25 1.2730 7114.00 0.05 7962.12 0.04
26 1.2947 6088.25 -0.33 8067.10 0.30
27 1.2949 6080.55 0.06 8067.71 0.03
28 1.4367 3328.11 0.02 8585.81 -0.01
29 1.4587 3661.93 -0.04 8651.35 0.04
30 1.5352 6416.00 0.08 8883.49 -0.10
31 2.1629 31471.40 -0.02 13587.47 -0.06
32 2.1792 30630.67 0.04 13706.03 -0.06
33 2.3459 22228.96 0.02 14453.74 -0.03
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.
15RD277 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 25.986 25.996 25.976 ecceobj 0.290 0.290 0.289 incobj 18.838 18.838 18.838 qmin 17.872 18.215 18.032 qmax 34.558 34.383 33.780 amean 25.883 26.126 25.727 amin 24.893 25.609 25.453 amax 26.553 26.441 26.178 emean 0.291 0.292 0.287 emin 0.262 0.278 0.265 emax 0.309 0.303 0.300 imean 19.448 19.220 19.586 imin 18.994 18.938 19.065 imax 20.081 19.699 20.362 excite_mean 0.442 0.440 0.442 fracstop 0.010 0.007 0.008 cjmean 2.830 2.828 2.832 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 104.7 303.0 128.3 kozaiamp 179.6 179.4 179.6