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: 182222 # Created Fri Dec 27 02:06:53 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 36 observations of 36 # Arc: 22.03y # First observation: 2000/12/16 # Last observation: 2022/12/26 # Chi-squared of fit: 167.00 DOF: 66 RMS: 0.38 # Min/Max residuals: -0.98 1.06 # Exact a, adot, b, bdot, g, gdot: 1.611994E-05 2.118286E-02 1.897190E-06 -2.025791E-03 2.292525E-02 -2.259787E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -2.881600 54.678124 -0.489620 -0.042780 -0.846503 2451894.613653 # Heliocentric elements and errors Epoch: 2451894.5000 = 2000/12/16 Mean Anomaly: 268.55698 +/- 0.000 Argument of Peri: 309.98252 +/- 0.000 Long of Asc Node: 207.75565 +/- 0.000 Inclination: 6.09111 +/- 0.000 Eccentricity: 0.09559740 +/- 0.0000 Semi-Major Axis: 43.97235872 +/- 0.0000 Time of Perihelion: 2478947.5447 +/- 0.0 Perihelion: 39.76871567 +/- 0.0000 Aphelion: 48.17600176 +/- 0.0000 Period (y) 291.5935 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.28261198 +/- 0.0000 Ecliptic Y 36.52521838 +/- 0.0000 Ecliptic Z -2.19277973 +/- 0.0000 Ecliptic XDOT -0.00223498 +/- 0.0000 Ecliptic YDOT 0.00123696 +/- 0.0000 Ecliptic ZDOT -0.00022788 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.47601341 +/- 0.0000 Geocenter to KBO 43.62012789 +/- 0.0000 # Hcoef: 7.22
The following table shows the complete astrometric record for 182222. 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 (182222) followed by the observatory code and reference code for the source of the astrometry.
2000 12 16.11291 03 32 11.66 +16 08 31.2 182222 695 Cc4110 2000 12 16.16070 03 32 11.46 +16 08 30.6 22.8R 182222 695 Cc4110 2000 12 16.20000 03 32 11.33 +16 08 29.8 23.4R 182222 695 Cc4110 2000 12 18.16722 03 32 03.48 +16 08 05.1 182222 695 Cc4110 2001 09 21.35774 03 43 01.50 +16 41 38.0 182222 675 Ce6592 2001 09 21.41648 03 43 01.37 +16 41 37.6 22.9R 182222 675 Ce6592 2001 09 21.48993 03 43 01.22 +16 41 36.7 22.8R 182222 675 Ce6592 2001 12 12.91008 03 37 29.37 +16 19 50.5 23.4R 182222 950 Ce6592 2001 12 12.94988 03 37 29.19 +16 19 50.1 23.1R 182222 950 Ce6592 2002 11 11.24701 03 45 03.37 +16 38 22.2 182222 695 Cg5722 2002 11 11.29533 03 45 03.18 +16 38 21.6 182222 695 Cg5722 2002 11 12.25777 03 44 58.61 +16 38 04.8 23.5R 182222 695 Cg5722 2002 11 12.36332 03 44 58.12 +16 38 03.0 23.0R 182222 695 Cg5722 2002 11 12.42035 03 44 57.84 +16 38 02.0 23.7R 182222 695 Cg5722 2003 12 21.161521 03 47 08.19 +16 37 55.8 22.8V 182222 645 C~2FpP 2003 12 21.162350 03 47 08.19 +16 37 55.6 182222 645 C~2FpP 2003 12 21.164838 03 47 08.20 +16 37 55.7 182222 645 C~2FpP 2005 10 27.47062 04 01 35.35 +17 09 05.6 23.0R 182222 568 Cp1834 2005 10 27.56715 04 01 34.94 +17 09 04.1 182222 568 Cp1834 2006 08 03.26284 04 07 57.22 +17 27 51.5 22.7R 182222 250 S~06I2 2006 08 03.26724 04 07 57.23 +17 27 51.5 182222 250 S~06I2 2006 08 03.27164 04 07 57.25 +17 27 51.5 182222 250 S~06I2 2006 08 03.27604 04 07 57.26 +17 27 51.6 182222 250 S~06I2 2007 09 17.45098 04 13 48.99 +17 32 34.3 182222 675 Cy6674 2007 09 17.45512 04 13 48.94 +17 32 34.4 182222 675 Cy6674 2007 09 17.45996 04 13 48.97 +17 32 34.3 182222 675 Cy6674 2007 09 17.46446 04 13 48.98 +17 32 34.6 182222 675 Cy6674 2007 09 18.47402 04 13 47.87 +17 32 25.7 23.5R 182222 675 Cy6674 2016 02 04.17279 04 47 54.46 +17 54 32.2 22.8R 182222 G37 C~1meU 2016 02 04.30393 04 47 54.13 +17 54 33.2 182222 G37 C~1meU 2018 11 14.354000 05 10 10.46 +18 09 40.0 24.5G 182222 705 C~2rQx 2018 11 14.396550 05 10 10.26 +18 09 39.6 24.5G 182222 705 C~2rQx 2018 11 14.443210 05 10 10.04 +18 09 39.6 24.5G 182222 705 C~2rQx 2022 12 26.290880 05 29 05.872 +18 06 35.98 23.7G 182222 G37 C~6Aax 2022 12 26.345230 05 29 05.596 +18 06 37.18 182222 G37 C~6Aax 2022 12 26.392720 05 29 05.354 +18 06 36.13 182222 G37 C~6Aax
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 -0.15 0.00 -0.73
2 0.0001 0.00 -0.21 0.00 -0.70
3 0.0002 0.00 0.25 0.00 -0.98
4 0.0056 0.00 -0.28 0.00 0.07
5 0.7645 0.00 0.04 0.00 0.70
6 0.7647 0.00 -0.08 0.00 0.96
7 0.7649 0.00 -0.02 0.00 0.89
8 0.9905 0.00 0.24 0.00 0.18
9 0.9907 0.00 0.13 0.00 0.33
10 1.9032 0.00 -0.27 0.00 -0.04
11 1.9033 0.00 0.34 0.00 0.18
12 1.9059 0.00 -0.24 0.00 -0.11
13 1.9062 0.00 0.00 0.00 -0.11
14 1.9064 0.00 -0.10 0.00 -0.12
15 3.0118 0.00 0.15 0.00 -0.19
16 3.0118 0.00 0.20 0.00 -0.39
17 3.0118 0.00 0.50 0.00 -0.26
18 4.8634 0.00 -0.57 0.00 0.10
19 4.8637 0.00 -0.56 0.00 0.09
20 5.6294 0.00 0.26 0.00 -0.13
21 5.6294 0.00 0.22 0.00 -0.14
22 5.6295 0.00 0.33 0.00 -0.15
23 5.6295 0.00 0.28 0.00 -0.06
24 6.7525 0.00 0.01 0.00 -0.11
25 6.7525 0.00 -0.67 0.00 0.02
26 6.7525 0.00 -0.14 0.00 -0.04
27 6.7525 0.00 0.08 0.00 0.30
28 6.7553 0.00 -0.32 0.00 0.15
29 15.1350 0.00 0.55 0.00 0.21
30 15.1354 0.00 -0.38 0.00 1.06
31 17.9117 0.00 0.07 0.00 -0.12
32 17.9118 0.00 -0.04 0.00 -0.12
33 17.9119 0.00 -0.16 0.00 0.33
34 22.0265 0.00 -0.01 0.00 -0.92
35 22.0266 0.00 0.02 0.00 0.46
36 22.0268 0.00 0.03 0.00 -0.44
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.
182222 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.949 43.948 43.949 ecceobj 0.094 0.094 0.094 incobj 6.089 6.089 6.089 qmin 38.756 38.743 38.768 qmax 49.099 49.053 49.102 amean 43.726 43.725 43.725 amin 43.314 43.299 43.307 amax 44.172 44.141 44.152 emean 0.098 0.097 0.098 emin 0.080 0.077 0.082 emax 0.112 0.111 0.112 imean 7.304 7.300 7.269 imin 6.552 6.552 6.434 imax 8.117 8.151 8.060 excite_mean 0.160 0.160 0.160 fracstop 1.000 1.000 1.000 cjmean 3.067 3.068 3.067 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 174.1 173.8 176.2 kozaiamp 180.0 180.0 180.0