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: 15RW277
# Created Sun Dec 22 02:10:27 2024
# Orbit generated from Bernstein formalism
# Fitting 25 observations of 25
# Arc: 1.53y
# First observation: 2015/06/23
# Last observation: 2017/01/02
Preliminary a, adot, b, bdot, g, gdot:
-0.000094 0.031333 0.000064 0.018243 0.032887 0.000000
# Chi-squared of fit: 12.54 DOF: 44 RMS: 0.13
# Min/Max residuals: -0.33 0.32
# Exact a, adot, b, bdot, g, gdot:
1.658441E-05 3.018690E-02 8.198442E-06 1.782294E-02 3.187814E-02 -1.279695E-03
# Covariance matrix:
3.9934E-13 2.7067E-13 -1.0578E-13 4.7591E-13 6.2669E-13 1.6288E-11
2.7067E-13 7.3393E-13 -1.5279E-13 6.8230E-13 9.2038E-13 2.3356E-11
-1.0578E-13 -1.5279E-13 1.8832E-13 -3.6322E-13 -2.5813E-13 -8.4575E-12
4.7591E-13 6.8230E-13 -3.6322E-13 1.3771E-12 1.1713E-12 4.1407E-11
6.2669E-13 9.2038E-13 -2.5813E-13 1.1713E-12 1.4995E-12 4.0077E-11
1.6288E-11 2.3356E-11 -8.4575E-12 4.1407E-11 4.0077E-11 1.4140E-09
# lat0 lon0 xBary yBary zBary JD0
2.917093 8.079451 1.010198 -0.005578 0.111335 2457197.079268
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 239.78886 +/- 0.456
Argument of Peri: 133.27698 +/- 0.445
Long of Asc Node: 1.32428 +/- 0.000
Inclination: 30.88761 +/- 0.001
Eccentricity: 0.07857595 +/- 0.0008
Semi-Major Axis: 29.95784828 +/- 0.0046
Time of Perihelion: 2477189.4207 +/- 75.7
Perihelion: 27.60388204 +/- 0.0251
Aphelion: 32.31181452 +/- 0.0252
Period (y) 163.9737 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 31.04596209 +/- 0.0012
Ecliptic Y 3.38766713 +/- 0.0002
Ecliptic Z 1.59673337 +/- 0.0001
Ecliptic XDOT -0.00055264 +/- 0.0000
Ecliptic YDOT 0.00253425 +/- 0.0000
Ecliptic ZDOT 0.00152321 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 31.27103465 +/- 0.0012
Geocenter to KBO 31.36946102 +/- 0.0012
# Hcoef: 10.18
The following table shows the complete astrometric record for 15RW277. 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 (15RW277) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.57849 00 25 03.408 +05 53 04.54 26.1r 15RW277 568 C~2lVO 2015 06 23.58498 00 25 03.455 +05 53 04.57 25.2r 15RW277 568 C~2lVO 2015 08 20.40327 00 23 18.978 +05 58 13.00 25.0r 15RW277 568 C~2lVO 2015 08 20.45053 00 23 18.759 +05 58 12.22 25.1r 15RW277 568 C~2lVO 2015 09 07.55043 00 21 41.920 +05 52 19.01 25.3w 15RW277 568 C~2lVO 2015 09 09.37654 00 21 31.144 +05 51 34.83 24.9r 15RW277 568 C~2lVO 2015 09 09.42093 00 21 30.874 +05 51 33.72 25.0r 15RW277 568 C~2lVO 2015 09 09.46188 00 21 30.621 +05 51 32.66 24.9r 15RW277 568 C~2lVO 2015 09 10.48550 00 21 24.491 +05 51 07.31 25.2w 15RW277 568 C~2lVO 2015 09 18.44074 00 20 35.524 +05 47 37.28 26.2w 15RW277 568 C~2lVO 2015 09 18.48843 00 20 35.224 +05 47 35.76 24.8w 15RW277 568 C~2lVO 2015 10 08.32880 00 18 29.125 +05 37 50.37 25.1w 15RW277 568 C~2lVO 2015 10 08.38143 00 18 28.781 +05 37 48.88 25.2w 15RW277 568 C~2lVO 2015 10 09.29850 00 18 23.022 +05 37 20.85 25.1w 15RW277 568 C~2lVO 2016 09 05.58714 00 26 44.250 +07 33 35.85 15RW277 568 C~2lVO 2016 09 06.53623 00 26 38.740 +07 33 14.98 15RW277 568 C~2lVO 2016 09 06.57833 00 26 38.491 +07 33 14.00 15RW277 568 C~2lVO 2016 09 27.49284 00 24 28.553 +07 24 04.63 25.1w 15RW277 568 C~2lVO 2016 10 30.32669 00 21 08.527 +07 07 37.04 15RW277 568 C~2lVO 2016 11 02.28217 00 20 53.016 +07 06 15.04 15RW277 568 C~2lVO 2016 11 03.27521 00 20 47.961 +07 05 47.97 15RW277 568 C~2lVO 2016 11 03.32774 00 20 47.685 +07 05 46.76 15RW277 568 C~2lVO 2016 12 24.22613 00 18 40.979 +06 54 38.65 25.3w 15RW277 568 C~2lVO 2016 12 24.24532 00 18 41.029 +06 54 38.85 26.4w 15RW277 568 C~2lVO 2017 01 02.22668 00 18 50.467 +06 55 50.78 24.4w 15RW277 568 C~2lVO
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 -0.33 0.00 0.13
2 0.0000 0.66 0.14 -0.25 -0.22
3 0.1583 -1308.31 0.10 900.65 0.05
4 0.1584 -1311.62 0.17 901.23 -0.08
5 0.2080 -2778.12 -0.23 1150.65 0.05
6 0.2130 -2943.27 0.10 1174.00 -0.01
7 0.2131 -2947.41 0.08 1174.58 -0.02
8 0.2132 -2951.29 0.01 1175.11 -0.05
9 0.2160 -3045.33 0.10 1188.20 -0.01
10 0.2378 -3799.54 -0.05 1286.05 0.22
11 0.2379 -3804.25 -0.07 1286.44 0.01
12 0.2923 -5764.94 0.07 1499.02 -0.07
13 0.2924 -5770.25 0.02 1499.70 0.07
14 0.2949 -5860.34 -0.08 1508.27 -0.04
15 1.2047 3766.42 -0.01 4946.79 0.01
16 1.2073 3682.86 0.03 4959.98 -0.01
17 1.2074 3679.07 0.03 4960.54 -0.05
18 1.2647 1686.00 -0.00 5220.52 -0.04
19 1.3545 -1438.91 0.06 5495.66 0.22
20 1.3626 -1683.45 -0.14 5512.29 0.04
21 1.3654 -1763.29 -0.08 5517.40 -0.22
22 1.3655 -1767.54 -0.06 5517.93 -0.01
23 1.5049 -3765.10 -0.31 5656.95 0.12
24 1.5049 -3764.34 0.32 5656.83 -0.03
25 1.5295 -3606.67 0.13 5666.73 -0.06
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.
15RW277 quality flag:3 Type: 1:1 1:1 1:1 axisobj 30.134 30.139 30.130 ecceobj 0.074 0.074 0.074 incobj 30.757 30.758 30.756 qmin 27.025 26.978 27.009 qmax 33.446 33.425 33.333 amean 30.109 30.109 30.109 amin 29.758 29.767 29.750 amax 30.483 30.474 30.483 emean 0.069 0.069 0.068 emin 0.039 0.039 0.039 emax 0.098 0.098 0.098 imean 31.195 31.196 31.189 imin 30.923 30.922 30.929 imax 31.449 31.444 31.457 excite_mean 0.523 0.523 0.523 fracstop 1.000 1.000 1.000 cjmean 2.707 2.707 2.707 libcent 0 64.2 64.1 64.5 libamp 0 32.3 31.5 33.2 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 174.5 174.4 174.2 kozaiamp 180.0 180.0 180.0