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: 15RF277
# Created Sun Dec 22 02:10:27 2024
# Orbit generated from Bernstein formalism
# Fitting 25 observations of 25
# Arc: 1.53y
# First observation: 2015/07/19
# Last observation: 2017/01/28
Preliminary a, adot, b, bdot, g, gdot:
0.003476 0.227963 -0.000057 -0.001726 0.102693 0.000000
# Chi-squared of fit: 12.37 DOF: 44 RMS: 0.12
# Min/Max residuals: -0.34 0.31
# Exact a, adot, b, bdot, g, gdot:
3.635674E-05 2.275214E-01 -2.743324E-07 -1.893227E-03 9.752555E-02 4.431331E-02
# Covariance matrix:
2.2411E-13 1.2435E-12 -8.3378E-16 -1.3166E-14 4.9453E-13 5.6253E-12
1.2435E-12 7.1110E-11 1.2911E-14 -7.5737E-13 2.0798E-11 3.0741E-10
-8.3378E-16 1.2911E-14 1.1435E-13 -1.1026E-13 2.5329E-15 5.9114E-14
-1.3166E-14 -7.5737E-13 -1.1026E-13 2.1658E-13 -2.2066E-13 -3.2875E-12
4.9453E-13 2.0798E-11 2.5329E-15 -2.2066E-13 6.2140E-12 8.9893E-11
5.6253E-12 3.0741E-10 5.9114E-14 -3.2875E-12 8.9893E-11 1.3336E-09
# lat0 lon0 xBary yBary zBary JD0
0.869829 10.399141 0.977629 0.004385 -0.282189 2457223.011629
# Heliocentric elements and errors
Epoch: 2457220.5000 = 2015/07/17
Mean Anomaly: 4.57504 +/- 0.006
Argument of Peri: 97.88908 +/- 0.024
Long of Asc Node: 250.44272 +/- 0.006
Inclination: 0.92806 +/- 0.000
Eccentricity: 0.51789793 +/- 0.0001
Semi-Major Axis: 21.62252354 +/- 0.0034
Time of Perihelion: 2456753.7864 +/- 0.6
Perihelion: 10.42426339 +/- 0.0028
Aphelion: 32.82078370 +/- 0.0056
Period (y) 100.5467 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 10.53464939 +/- 0.0003
Ecliptic Y 0.94005240 +/- 0.0000
Ecliptic Z 0.15570940 +/- 0.0000
Ecliptic XDOT 0.00006906 +/- 0.0000
Ecliptic YDOT 0.00650070 +/- 0.0000
Ecliptic ZDOT -0.00003420 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 10.57765483 +/- 0.0003
Geocenter to KBO 10.25372302 +/- 0.0003
# Hcoef: 14.67
The following table shows the complete astrometric record for 15RF277. 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 (15RF277) followed by the observatory code and reference code for the source of the astrometry.
2015 07 19.51084 00 36 51.624 +04 55 02.82 24.9r 15RF277 568 C~2ji9 2015 08 11.49932 00 36 10.129 +04 52 08.53 24.9r 15RF277 568 C~2ji9 2015 08 11.55875 00 36 09.766 +04 52 06.51 26.6r 15RF277 568 C~2ji9 2015 09 08.39679 00 31 54.960 +04 26 05.35 24.5r 15RF277 568 C~2ji9 2015 09 08.50096 00 31 53.669 +04 25 57.29 24.6r 15RF277 568 C~2ji9 2015 09 08.54456 00 31 53.121 +04 25 53.79 24.9r 15RF277 568 C~2ji9 2015 09 09.52009 00 31 41.115 +04 24 38.11 25.4w 15RF277 568 C~2ji9 2015 09 10.46103 00 31 29.401 +04 23 24.04 25.2w 15RF277 568 C~2ji9 2015 09 16.44783 00 30 11.869 +04 15 11.04 24.3w 15RF277 568 C~2ji9 2015 10 07.33325 00 25 21.608 +03 43 48.78 24.5r 15RF277 568 C~2ji9 2015 10 07.39133 00 25 20.781 +03 43 43.59 25.2r 15RF277 568 C~2ji9 2015 11 07.21826 00 19 14.200 +03 02 28.92 25.0w 15RF277 568 C~2ji9 2015 11 07.27071 00 19 13.724 +03 02 25.73 25.5w 15RF277 568 C~2ji9 2015 11 08.31542 00 19 04.688 +03 01 22.12 25.4w 15RF277 568 C~2ji9 2015 11 10.34785 00 18 47.974 +02 59 23.78 24.9w 15RF277 568 C~2ji9 2015 12 07.29452 00 17 06.994 +02 45 55.42 25.1w 15RF277 568 C~2jiA 2016 01 01.22912 00 19 13.967 +02 57 03.17 25.7w 15RF277 568 C~2jiA 2016 09 05.52849 01 22 03.103 +09 28 48.31 25.4w 15RF277 568 C~2jiA 2016 09 07.46799 01 21 44.803 +09 27 02.56 25.7w 15RF277 568 C~2jiA 2016 09 07.51408 01 21 44.355 +09 27 00.00 25.2w 15RF277 568 C~2jiA 2016 09 26.54469 01 18 03.334 +09 05 16.51 25.1w 15RF277 568 C~2jiA 2016 12 29.30079 01 04 45.521 +07 38 55.14 25.6w 15RF277 568 C~2jiA 2017 01 02.33619 01 05 04.116 +07 40 26.80 25.6w 15RF277 568 C~2jiA 2017 01 27.23065 01 08 57.059 +08 02 00.83 24.9w 15RF277 568 C~2jiA 2017 01 28.22691 01 09 10.328 +08 03 16.70 26.2w 15RF277 568 C~2jiA
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 0.11 0.00 -0.01
2 0.0629 -638.77 0.08 83.32 -0.00
3 0.0631 -644.56 -0.23 83.60 -0.05
4 0.1393 -4761.87 -0.18 148.01 0.18
5 0.1396 -4782.80 0.04 148.22 0.03
6 0.1397 -4791.72 -0.01 148.23 -0.09
7 0.1424 -4986.67 -0.01 149.49 0.04
8 0.1450 -5176.99 -0.06 150.53 0.14
9 0.1614 -6438.10 0.17 155.20 -0.02
10 0.2185 -11180.59 -0.03 144.31 -0.02
11 0.2187 -11194.05 0.04 144.45 0.08
12 0.3031 -17243.50 -0.13 51.58 -0.03
13 0.3032 -17251.37 -0.10 51.49 0.00
14 0.3061 -17401.90 -0.01 46.93 -0.14
15 0.3117 -17680.68 0.22 37.87 -0.25
16 0.3854 -19404.02 0.14 -102.49 0.04
17 0.4537 -17377.15 -0.02 -246.98 0.15
18 1.1335 44213.65 0.12 -256.30 -0.05
19 1.1388 43909.71 -0.10 -254.33 -0.05
20 1.1390 43902.28 0.11 -254.25 -0.12
21 1.1911 40233.60 -0.03 -249.59 -0.01
22 1.4477 26967.79 0.31 -594.65 0.17
23 1.4588 27263.34 -0.34 -615.24 0.02
24 1.5270 31030.78 0.13 -732.26 0.06
25 1.5297 31246.73 -0.20 -736.63 -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.
15RF277 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 21.632 21.701 21.564 ecceobj 0.520 0.521 0.519 incobj 0.931 0.931 0.931 qmin 10.190 10.389 9.838 qmax 39.464 33.341 39.035 amean 23.894 21.792 21.475 amin 21.632 21.701 17.930 amax 24.847 21.883 24.495 emean 0.567 0.522 0.527 emin 0.520 0.521 0.445 emax 0.588 0.524 0.594 imean 2.415 2.377 4.766 imin 2.213 2.366 2.329 imax 2.562 2.387 7.991 excite_mean 0.568 0.524 0.535 fracstop 0.001 0.000 0.001 cjmean 2.728 2.830 2.840 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 168.2 103.4 168.7 kozaiamp 49.3 5.3 55.2