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: 15RH277
# Created Wed Apr 24 01:17:21 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 25 observations of 25
# Arc: 8.46y
# First observation: 2015/06/23
# Last observation: 2023/12/07
# Chi-squared of fit: 5.44 DOF: 44 RMS: 0.08
# Min/Max residuals: -0.22 0.21
# Exact a, adot, b, bdot, g, gdot:
2.868859E-05 1.349209E-01 5.064282E-06 2.203431E-02 7.302794E-02 -4.710742E-02
# Covariance matrix:
9.8119E-13 -4.9137E-12 7.0380E-14 -3.4922E-13 -2.5597E-13 1.7028E-12
-4.9137E-12 6.0667E-11 -1.0136E-12 2.5217E-12 1.1204E-11 -9.6749E-12
7.0380E-14 -1.0136E-12 8.7317E-13 -3.5210E-12 -2.2248E-13 7.2695E-13
-3.4922E-13 2.5217E-12 -3.5210E-12 2.2399E-11 1.6637E-13 -4.5453E-12
-2.5597E-13 1.1204E-11 -2.2248E-13 1.6637E-13 3.6197E-12 1.6872E-13
1.7028E-12 -9.6749E-12 7.2695E-13 -4.5453E-12 1.6872E-13 2.3144E-11
# lat0 lon0 xBary yBary zBary JD0
2.662996 8.814091 1.008647 -0.005702 0.124610 2457197.060258
# Heliocentric elements and errors
Epoch: 2457196.5000 = 2015/06/23
Mean Anomaly: 334.50249 +/- 0.000
Argument of Peri: 89.62393 +/- 0.000
Long of Asc Node: 349.35500 +/- 0.000
Inclination: 10.12384 +/- 0.000
Eccentricity: 0.50848990 +/- 0.0000
Semi-Major Axis: 20.88823470 +/- 0.0000
Time of Perihelion: 2459666.2124 +/- 0.0
Perihelion: 10.26677839 +/- 0.0000
Aphelion: 31.50969101 +/- 0.0000
Period (y) 95.4687 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 13.54488019 +/- 0.0000
Ecliptic Y 1.08034277 +/- 0.0000
Ecliptic Z 0.63634068 +/- 0.0000
Ecliptic XDOT -0.00255880 +/- 0.0000
Ecliptic YDOT 0.00471607 +/- 0.0000
Ecliptic ZDOT 0.00074320 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 13.60295576 +/- 0.0000
Geocenter to KBO 13.69354208 +/- 0.0000
# Hcoef: 13.23
The following table shows the complete astrometric record for 15RH277. 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 (15RH277) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.55948 00 28 10.266 +05 56 29.31 25.2r 15RH277 568 C~2jiA 2015 07 14.60417 00 29 21.639 +06 13 38.03 24.3r 15RH277 568 C~2jiA 2015 07 19.58329 00 29 21.575 +06 15 55.64 24.6r 15RH277 568 C~2jiA 2015 08 20.41299 00 26 52.715 +06 14 19.61 24.4r 15RH277 568 C~2jiA 2015 08 20.46234 00 26 52.296 +06 14 18.17 24.1r 15RH277 568 C~2jiA 2015 09 07.55863 00 23 51.009 +06 02 01.67 24.5w 15RH277 568 C~2jiA 2015 09 09.38473 00 23 29.992 +06 00 25.33 24.5r 15RH277 568 C~2jiA 2015 09 09.42909 00 23 29.464 +06 00 22.91 24.6r 15RH277 568 C~2jiA 2015 09 09.47005 00 23 28.980 +06 00 20.71 24.6r 15RH277 568 C~2jiA 2015 09 10.48550 00 23 17.075 +05 59 25.63 24.6w 15RH277 568 C~2jiA 2015 09 18.48843 00 21 39.778 +05 51 38.56 24.8w 15RH277 568 C~2jiA 2015 10 08.32880 00 17 26.989 +05 29 40.45 24.6w 15RH277 568 C~2jiA 2015 10 08.38143 00 17 26.322 +05 29 36.89 24.4w 15RH277 568 C~2jiA 2015 10 09.29849 00 17 14.790 +05 28 33.66 24.5w 15RH277 568 C~2jiA 2016 09 05.57095 00 54 58.415 +10 53 34.37 24.4w 15RH277 568 C~2jiA 2016 09 06.52006 00 54 48.343 +10 53 00.21 24.6w 15RH277 568 C~2jiA 2016 09 06.56215 00 54 47.889 +10 52 58.73 24.5w 15RH277 568 C~2jiA 2016 11 04.29478 00 42 24.736 +09 52 07.53 24.4w 15RH277 568 C~2jiA 2016 11 04.35380 00 42 24.073 +09 52 03.57 24.4w 15RH277 568 C~2jiA 2016 12 29.28084 00 38 46.008 +09 23 44.39 24.6w 15RH277 568 C~2jiA 2017 01 02.31554 00 39 05.196 +09 25 03.49 24.7w 15RH277 568 C~2jiA 2021 01 11.149260 03 33 28.205 +29 47 59.59 23.4G 15RH277 G37 C~4UHY 2021 01 11.206010 03 33 27.859 +29 47 56.29 15RH277 G37 C~4UHY 2023 12 07.452760 07 06 58.628 +32 48 47.79 24.2G 15RH277 G37 C~7dJr 2023 12 07.491250 07 06 58.078 +32 48 49.59 15RH277 G37 C~7dJr
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 0.12 0.00 -0.01
2 0.0576 0.00 0.08 0.00 -0.05
3 0.0712 0.00 0.09 0.00 0.00
4 0.1584 0.00 -0.10 0.00 -0.00
5 0.1585 0.00 -0.02 0.00 -0.05
6 0.2081 0.00 0.04 0.00 0.04
7 0.2131 0.00 -0.03 0.00 -0.04
8 0.2132 0.00 -0.03 0.00 -0.08
9 0.2133 0.00 0.03 0.00 -0.09
10 0.2161 0.00 -0.08 0.00 -0.07
11 0.2380 0.00 -0.08 0.00 0.06
12 0.2923 0.00 -0.02 0.00 0.02
13 0.2925 0.00 0.16 0.00 0.07
14 0.2950 0.00 0.09 0.00 -0.02
15 1.2047 0.00 0.01 0.00 0.08
16 1.2073 0.00 -0.11 0.00 0.01
17 1.2074 0.00 0.03 0.00 0.08
18 1.3682 0.00 -0.01 0.00 0.08
19 1.3684 0.00 -0.02 0.00 0.01
20 1.5187 0.00 -0.01 0.00 -0.03
21 1.5298 0.00 0.00 0.00 0.07
22 5.5540 0.00 -0.02 0.00 -0.20
23 5.5541 0.00 0.05 0.00 0.14
24 8.4569 0.00 -0.22 0.00 -0.09
25 8.4570 0.00 0.21 0.00 0.09
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.
15RH277 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 20.969 20.969 20.970 ecceobj 0.510 0.510 0.510 incobj 10.092 10.092 10.092 qmin 9.830 10.218 10.209 qmax 31.659 31.658 35.450 amean 18.723 20.560 21.442 amin 15.920 20.276 20.254 amax 20.969 20.969 23.021 emean 0.422 0.498 0.510 emin 0.353 0.491 0.488 emax 0.510 0.510 0.540 imean 9.919 11.180 11.708 imin 8.073 10.925 10.925 imax 12.158 11.517 13.101 excite_mean 0.456 0.534 0.549 fracstop 0.009 0.001 0.001 cjmean 3.019 2.868 2.825 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 176.4 102.8 118.6 kozaiamp 172.8 12.5 29.0