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: 12UP177 # Created Thu Apr 25 01:14:05 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 29 observations of 29 # Arc: 6.30y # First observation: 2011/08/31 # Last observation: 2017/12/20 # Chi-squared of fit: 11.02 DOF: 52 RMS: 0.11 # Min/Max residuals: -0.26 0.23 # Exact a, adot, b, bdot, g, gdot: 1.703623E-05 2.584874E-02 -8.112941E-07 -2.896842E-03 2.540467E-02 2.461381E-03 # Covariance matrix: 2.4194E-13 -1.7533E-13 -1.7303E-14 2.4215E-14 6.9801E-14 -1.2709E-12 -1.7533E-13 2.8007E-13 2.3034E-14 -3.7526E-14 4.0671E-14 2.0186E-12 -1.7303E-14 2.3034E-14 8.4710E-14 -3.0830E-14 -1.4004E-15 1.8698E-13 2.4215E-14 -3.7526E-14 -3.0830E-14 2.9066E-14 -2.7181E-15 -2.9892E-13 6.9801E-14 4.0671E-14 -1.4004E-15 -2.7181E-15 1.2378E-13 1.8614E-13 -1.2709E-12 2.0186E-12 1.8698E-13 -2.9892E-13 1.8614E-13 1.6034E-11 # lat0 lon0 xBary yBary zBary JD0 15.720659 32.984780 0.829133 0.154532 -0.549106 2455805.041466 # Heliocentric elements and errors Epoch: 2455804.5000 = 2011/08/31 Mean Anomaly: 40.53347 +/- 0.031 Argument of Peri: 61.55792 +/- 0.044 Long of Asc Node: 280.21231 +/- 0.001 Inclination: 16.59501 +/- 0.000 Eccentricity: 0.10472563 +/- 0.0002 Semi-Major Axis: 43.13154222 +/- 0.0039 Time of Perihelion: 2444155.1378 +/- 9.1 Perihelion: 38.61456436 +/- 0.0076 Aphelion: 47.64852008 +/- 0.0080 Period (y) 283.2701 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.71629866 +/- 0.0004 Ecliptic Y 20.24451514 +/- 0.0003 Ecliptic Z 10.66525263 +/- 0.0001 Ecliptic XDOT -0.00123462 +/- 0.0000 Ecliptic YDOT 0.00252715 +/- 0.0000 Ecliptic ZDOT -0.00022858 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.92418353 +/- 0.0004 Geocenter to KBO 39.36281062 +/- 0.0005 # Hcoef: 8.02
The following table shows the complete astrometric record for 12UP177. 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 (12UP177) followed by the observatory code and reference code for the source of the astrometry.
2011 08 31.54070 01 39 11.192 +27 11 47.81 24.1r 12UP177 568 C~1C6U 2011 08 31.60502 01 39 10.981 +27 11 48.12 12UP177 568 C~1C6U 2011 09 05.51099 01 38 54.837 +27 11 53.59 23.8r 12UP177 568 C~1C6U 2011 11 24.38502 01 32 34.574 +26 40 23.23 24.0r 12UP177 568 C~1C6U 2011 11 30.46714 01 32 11.460 +26 36 34.04 23.8r 12UP177 568 C~1C6U 2011 11 30.47141 01 32 11.445 +26 36 34.15 24.5r 12UP177 568 C~1C6U 2011 11 30.47570 01 32 11.435 +26 36 34.05 24.3r 12UP177 568 C~1C6U 2011 12 01.38483 01 32 08.215 +26 35 59.71 24.1r 12UP177 568 C~1C6U 2011 12 01.40191 01 32 08.154 +26 35 59.07 24.1r 12UP177 568 C~1C6U 2012 01 28.27120 01 31 28.926 +26 08 20.05 12UP177 568 C~1C6U 2012 08 18.52671 01 46 09.366 +27 33 45.68 23.8r 12UP177 568 C~1C6U 2012 08 21.50757 01 46 03.419 +27 34 18.64 24.2r 12UP177 568 C~1C6U 2012 08 28.44178 01 45 46.456 +27 35 12.06 12UP177 568 C~1C6U 2012 08 28.48038 01 45 46.338 +27 35 12.28 12UP177 568 C~1C6U 2012 08 28.52418 01 45 46.224 +27 35 12.55 12UP177 568 C~1C6U 2012 09 14.46013 01 44 47.871 +27 35 05.90 23.9r 12UP177 568 C~1C6U 2012 10 19.39864 01 41 57.239 +27 25 01.63 23.8r 12UP177 568 C~1C6U 2012 10 20.39070 01 41 51.951 +27 24 34.29 12UP177 568 C~1C6U 2012 10 21.40089 01 41 46.574 +27 24 06.05 23.9r 12UP177 568 C~1C6U 2012 10 21.43944 01 41 46.366 +27 24 04.94 24.0r 12UP177 568 C~1C6U 2012 10 21.47785 01 41 46.153 +27 24 03.94 23.9r 12UP177 568 C~1C6U 2012 10 21.49508 01 41 46.063 +27 24 03.32 24.1r 12UP177 568 C~1C6U 2012 10 23.37162 01 41 36.095 +27 23 09.53 23.8r 12UP177 568 C~1C6U 2012 11 14.38888 01 39 44.218 +27 11 00.69 23.9r 12UP177 568 C~1C6U 2013 01 14.26873 01 37 26.717 +26 37 10.33 24.0r 12UP177 568 C~1C6U 2013 01 14.29892 01 37 26.743 +26 37 09.47 23.8r 12UP177 568 C~1C6U 2013 02 14.27187 01 38 41.625 +26 30 12.27 24.3r 12UP177 568 C~1C6U 2017 12 20.12455 02 09 58.733 +28 36 20.23 23.8R 12UP177 G37 C~2Uwm 2017 12 20.19554 02 09 58.529 +28 36 17.86 12UP177 G37 C~2Uwm
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 -0.26
2 0.0002 0.00 -0.20 0.00 -0.13
3 0.0136 0.00 -0.11 0.00 0.06
4 0.2323 0.00 0.07 0.00 -0.09
5 0.2489 0.00 0.14 0.00 -0.17
6 0.2490 0.00 0.14 0.00 0.10
7 0.2490 0.00 0.23 0.00 0.16
8 0.2515 0.00 0.02 0.00 -0.07
9 0.2515 0.00 0.02 0.00 -0.07
10 0.4099 0.00 -0.24 0.00 -0.02
11 0.9664 0.00 0.20 0.00 -0.10
12 0.9746 0.00 0.01 0.00 0.08
13 0.9936 0.00 0.09 0.00 -0.04
14 0.9937 0.00 -0.04 0.00 -0.05
15 0.9938 0.00 0.13 0.00 -0.02
16 1.0402 0.00 0.02 0.00 -0.03
17 1.1358 0.00 0.07 0.00 0.08
18 1.1385 0.00 -0.05 0.00 0.05
19 1.1413 0.00 -0.04 0.00 0.10
20 1.1414 0.00 -0.02 0.00 0.08
21 1.1415 0.00 -0.10 0.00 0.17
22 1.1416 0.00 -0.05 0.00 0.04
23 1.1467 0.00 -0.08 0.00 0.12
24 1.2070 0.00 -0.20 0.00 0.09
25 1.3737 0.00 -0.02 0.00 0.00
26 1.3737 0.00 0.05 0.00 -0.15
27 1.4585 0.00 -0.11 0.00 0.08
28 6.3041 0.00 0.02 0.00 -0.07
29 6.3043 0.00 0.01 0.00 -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.
12UP177 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.222 43.222 43.222 ecceobj 0.107 0.107 0.107 incobj 16.596 16.596 16.596 qmin 37.878 37.936 37.868 qmax 48.153 48.136 48.125 amean 42.888 42.888 42.888 amin 42.534 42.533 42.552 amax 43.274 43.254 43.248 emean 0.100 0.100 0.100 emin 0.087 0.087 0.086 emax 0.114 0.113 0.113 imean 18.299 18.306 18.315 imin 17.813 17.814 17.808 imax 18.767 18.766 18.767 excite_mean 0.330 0.330 0.330 fracstop 1.000 1.000 1.000 cjmean 2.956 2.956 2.956 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 175.7 175.7 175.2 kozaiamp 180.0 180.0 179.9