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: 15GF57 # Created Sun Nov 24 02:10:17 2024 # Orbit generated from Bernstein formalism # Fitting 31 observations of 31 # Arc: 2.26y # First observation: 2015/02/17 # Last observation: 2017/05/24 Preliminary a, adot, b, bdot, g, gdot: -0.000071 0.023329 0.000001 -0.000322 0.023574 0.000000 # Chi-squared of fit: 8.49 DOF: 56 RMS: 0.09 # Min/Max residuals: -0.25 0.18 # Exact a, adot, b, bdot, g, gdot: 1.542069E-05 2.307252E-02 -2.151375E-07 -3.175789E-04 2.344369E-02 -2.885411E-03 # Covariance matrix: 1.8788E-13 1.0399E-14 4.1012E-16 -1.4112E-15 1.5279E-13 2.2044E-12 1.0399E-14 3.2776E-13 1.3037E-15 -5.4916E-15 2.2534E-13 8.5591E-12 4.1012E-16 1.3037E-15 9.7886E-14 -7.0980E-14 1.2179E-15 4.9313E-14 -1.4112E-15 -5.4916E-15 -7.0980E-14 9.8344E-14 -4.7531E-15 -2.1201E-13 1.5279E-13 2.2534E-13 1.2179E-15 -4.7531E-15 3.0815E-13 7.4139E-12 2.2044E-12 8.5591E-12 4.9313E-14 -2.1201E-13 7.4139E-12 3.3037E-10 # lat0 lon0 xBary yBary zBary JD0 -0.166279 -153.549342 0.837539 -0.001359 -0.518964 2457071.011078 # Heliocentric elements and errors Epoch: 2457070.5000 = 2015/02/17 Mean Anomaly: 307.19678 +/- 0.047 Argument of Peri: 261.03396 +/- 0.114 Long of Asc Node: 13.59652 +/- 0.012 Inclination: 0.80715 +/- 0.001 Eccentricity: 0.16104570 +/- 0.0008 Semi-Major Axis: 46.85957191 +/- 0.0123 Time of Perihelion: 2474255.6685 +/- 13.8 Perihelion: 39.31303943 +/- 0.0377 Aphelion: 54.40610440 +/- 0.0390 Period (y) 320.7788 +/- 0.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -39.03043149 +/- 0.0009 Ecliptic Y -18.48107296 +/- 0.0004 Ecliptic Z -0.12380484 +/- 0.0000 Ecliptic XDOT 0.00149834 +/- 0.0000 Ecliptic YDOT -0.00226786 +/- 0.0000 Ecliptic ZDOT -0.00003602 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.18495071 +/- 0.0008 Geocenter to KBO 42.65540166 +/- 0.0010 # Hcoef: 8.25
The following table shows the complete astrometric record for 15GF57. 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 (15GF57) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.51030 13 37 53.599 -10 21 38.12 24.6r 15GF57 568 C~2nvV 2015 02 17.55169 13 37 53.515 -10 21 37.60 24.7r 15GF57 568 C~2nvV 2015 02 20.48249 13 37 47.485 -10 21 04.41 24.6r 15GF57 568 C~2nvV 2015 03 18.48843 13 36 28.003 -10 13 37.65 24.5r 15GF57 568 C~2nvV 2015 03 18.53000 13 36 27.845 -10 13 36.87 25.0r 15GF57 568 C~2nvV 2015 03 20.53205 13 36 20.152 -10 12 53.05 24.4r 15GF57 568 C~2nvV 2015 04 11.46838 13 34 47.304 -10 04 03.87 24.7r 15GF57 568 C~2nvV 2015 04 12.37527 13 34 43.272 -10 03 40.81 24.9r 15GF57 568 C~2nvV 2015 04 12.41621 13 34 43.096 -10 03 40.03 23.8r 15GF57 568 C~2nvV 2015 04 12.46324 13 34 42.856 -10 03 38.72 24.3r 15GF57 568 C~2nvV 2015 04 18.43380 13 34 16.252 -10 01 05.88 25.4r 15GF57 568 C~2nvV 2015 04 18.48152 13 34 16.031 -10 01 04.74 23.8r 15GF57 568 C~2nvV 2015 05 16.28057 13 32 19.414 -09 49 52.06 24.7r 15GF57 568 C~2nvV 2015 05 25.38456 13 31 47.438 -09 46 46.49 24.5r 15GF57 568 C~2nvV 2015 05 25.44235 13 31 47.248 -09 46 45.36 24.5r 15GF57 568 C~2nvV 2015 06 21.33417 13 30 43.369 -09 40 32.99 24.8r 15GF57 568 C~2nvV 2015 06 22.29068 13 30 42.084 -09 40 25.41 24.5r 15GF57 568 C~2nvV 2016 02 04.61836 13 43 11.455 -10 52 50.91 25.1w 15GF57 568 C~2nvV 2016 02 11.60157 13 43 04.335 -10 52 13.97 24.7w 15GF57 568 C~2nvV 2016 04 03.46553 13 40 22.734 -10 37 17.01 24.6w 15GF57 568 C~2nvV 2016 04 09.44668 13 39 56.419 -10 34 48.73 24.6w 15GF57 568 C~2nvV 2016 05 02.34368 13 38 14.922 -10 25 13.02 24.6w 15GF57 568 C~2nvV 2016 05 07.34704 13 37 53.837 -10 23 12.79 24.7w 15GF57 568 C~2nvV 2016 05 28.31649 13 36 36.492 -10 15 49.95 24.8w 15GF57 568 C~2nvV 2016 05 29.32340 13 36 33.345 -10 15 31.85 25.0w 15GF57 568 C~2nvV 2016 06 04.38582 13 36 15.778 -10 13 50.86 24.7w 15GF57 568 C~2nvV 2016 06 27.31141 13 35 33.317 -10 09 44.82 24.8w 15GF57 568 C~2nvV 2016 07 07.30770 13 35 27.990 -10 09 13.42 25.0w 15GF57 568 C~2nvV 2017 03 29.48279 13 45 51.735 -11 09 26.24 24.4w 15GF57 568 C~2nvV 2017 03 29.50431 13 45 51.658 -11 09 25.63 25.0w 15GF57 568 C~2nvV 2017 05 24.25153 13 41 54.955 -10 47 19.78 24.4w 15GF57 568 C~2nvV
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 0.03 0.00 0.00
2 0.0001 -1.34 -0.01 0.04 0.07
3 0.0081 -96.30 0.04 -1.24 -0.09
4 0.0793 -1351.54 -0.16 -10.23 0.03
5 0.0795 -1354.00 -0.07 -10.35 -0.06
6 0.0849 -1475.73 0.09 -10.76 0.15
7 0.1450 -2945.44 0.01 -16.48 0.05
8 0.1475 -3009.31 -0.05 -16.70 -0.02
9 0.1476 -3012.01 0.18 -16.92 -0.21
10 0.1477 -3015.79 -0.23 -16.99 -0.25
11 0.1641 -3437.52 0.07 -17.89 0.02
12 0.1642 -3440.98 0.05 -18.02 -0.08
13 0.2403 -5291.54 -0.15 -21.33 -0.04
14 0.2652 -5799.67 0.05 -21.73 0.07
15 0.2654 -5802.70 0.08 -21.71 0.11
16 0.3390 -6818.82 0.06 -21.64 -0.02
17 0.3416 -6839.30 0.02 -21.57 0.00
18 0.9640 5047.16 0.02 -59.84 0.14
19 0.9831 4935.94 0.06 -62.91 0.12
20 1.1251 2390.35 0.01 -81.20 0.08
21 1.1415 1974.95 0.04 -82.70 0.02
22 1.2042 371.05 -0.01 -86.48 0.05
23 1.2179 37.55 0.00 -86.98 0.08
24 1.2753 -1186.75 0.08 -88.02 -0.00
25 1.2781 -1236.60 -0.03 -88.02 0.01
26 1.2947 -1514.89 -0.05 -88.08 -0.06
27 1.3574 -2188.36 -0.03 -86.72 0.14
28 1.3848 -2273.05 -0.11 -86.08 -0.03
29 2.1108 7609.31 -0.14 -147.10 -0.20
30 2.1109 7608.03 0.02 -146.93 -0.02
31 2.2635 3875.78 0.13 -154.85 -0.04
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.
15GF57 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.401 46.430 46.372 ecceobj 0.159 0.161 0.157 incobj 0.811 0.811 0.811 qmin 38.635 38.566 38.709 qmax 55.337 55.420 55.129 amean 46.744 46.774 46.714 amin 46.346 46.361 46.316 amax 47.219 47.266 47.172 emean 0.157 0.159 0.155 emin 0.143 0.145 0.141 emax 0.172 0.173 0.169 imean 1.911 1.914 1.908 imin 1.341 1.341 1.342 imax 2.384 2.381 2.385 excite_mean 0.161 0.163 0.159 fracstop 1.000 1.000 1.000 cjmean 3.103 3.103 3.104 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 174.8 175.1 175.0 kozaiamp 180.0 180.0 179.9