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: 19521 # Created Fri Jul 20 01:36:23 2018 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 112 observations of 112 # Arc: 26.27y # First observation: 1991/10/17 # Last observation: 2018/01/23 # Chi-squared of fit: 698.11 DOF: 218 RMS: 0.44 # Min/Max residuals: -1.47 2.01 # Exact a, adot, b, bdot, g, gdot: 1.385596E-05 2.284902E-02 2.407983E-06 4.864314E-03 2.374797E-02 -1.774053E-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 -0.563844 47.938066 0.410782 -0.008907 -0.911021 2448546.873933 # Heliocentric elements and errors Epoch: 2448546.5000 = 1991/10/17 Mean Anomaly: 309.53056 +/- 0.000 Argument of Peri: 57.92552 +/- 0.000 Long of Asc Node: 49.97940 +/- 0.000 Inclination: 12.04217 +/- 0.000 Eccentricity: 0.10531753 +/- 0.0000 Semi-Major Axis: 45.75253318 +/- 0.0000 Time of Perihelion: 2464393.5034 +/- 0.0 Perihelion: 40.93398934 +/- 0.0000 Aphelion: 50.57107702 +/- 0.0000 Period (y) 309.4788 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.12156798 +/- 0.0000 Ecliptic Y 31.66058630 +/- 0.0000 Ecliptic Z -0.41426487 +/- 0.0000 Ecliptic XDOT -0.00209131 +/- 0.0000 Ecliptic YDOT 0.00161222 +/- 0.0000 Ecliptic ZDOT 0.00056282 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.01900692 +/- 0.0000 Geocenter to KBO 42.10895754 +/- 0.0000 # Hcoef: 4.85
The following table shows the complete astrometric record for 19521. 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 (19521) followed by the observatory code and reference code for the source of the astrometry.
1991 10 17.37326 03 02 33.63 +16 38 06.3 19521 261 b7504 1993 11 09.28681 03 10 39.65 +17 47 04.6 19521 261 b7504 1996 12 05.14444 03 23 48.94 +19 31 11.6 21.1V 19521 691 Cb3558 1996 12 05.16983 03 23 48.84 +19 31 11.3 21.0V 19521 691 Cb3558 1996 12 05.19324 03 23 48.74 +19 31 11.0 21.0V 19521 691 Cb3558 1998 11 19.41122 03 35 39.49 +20 47 23.4 20.2R 19521 695 Ca3208 1998 11 19.48013 03 35 39.15 +20 47 22.2 19521 695 Ca3208 1998 11 24.28138 03 35 14.56 +20 46 12.6 20.0R 19521 688 Ca3208 1998 11 24.28953 03 35 14.53 +20 46 12.8 19521 688 Ca3208 1998 11 24.29734 03 35 14.53 +20 46 12.8 19521 688 Ca3208 1998 11 24.30465 03 35 14.47 +20 46 12.7 19521 688 Ca3208 1998 11 24.31334 03 35 14.45 +20 46 12.3 19521 688 Ca3208 1998 11 24.32090 03 35 14.39 +20 46 12.2 19521 688 Ca3208 1998 11 25.14568 03 35 10.23 +20 45 59.9 20.5R 19521 688 Ca3208 1998 11 25.15321 03 35 10.18 +20 46 00.0 19521 688 Ca3208 1998 11 25.16051 03 35 10.13 +20 45 59.6 19521 688 Ca3208 1998 11 25.16782 03 35 10.11 +20 45 59.6 19521 688 Ca3208 1998 11 25.17620 03 35 10.05 +20 45 59.6 19521 688 Ca3208 1998 11 25.19426 03 35 09.97 +20 45 59.7 19521 688 Ca3208 1998 11 25.20611 03 35 09.90 +20 45 59.1 19521 688 Ca3208 1998 11 25.21355 03 35 09.86 +20 45 59.0 19521 688 Ca3208 1998 11 25.22179 03 35 09.83 +20 45 58.9 19521 688 Ca3208 1998 11 26.20644 03 35 04.81 +20 45 44.4 20.6R 19521 688 Ca3208 1998 11 26.21575 03 35 04.77 +20 45 44.4 21.3V 19521 688 Ca3208 1998 11 26.22708 03 35 04.70 +20 45 44.2 19521 688 Ca3208 1998 11 26.23866 03 35 04.65 +20 45 44.1 19521 688 Ca3208 1998 11 26.27447 03 35 04.46 +20 45 43.6 19521 688 Ca3208 1998 11 26.28382 03 35 04.43 +20 45 43.4 19521 688 Ca3208 1998 11 26.31758 03 35 04.26 +20 45 42.9 19521 688 Ca3208 1998 11 26.32689 03 35 04.21 +20 45 42.8 19521 688 Ca3208 1998 11 26.36852 03 35 04.00 +20 45 42.3 19521 688 Ca3208 1998 11 26.37814 03 35 03.94 +20 45 41.8 19521 688 Ca3208 1998 11 26.41302 03 35 03.80 +20 45 41.6 19521 688 Ca3208 1998 11 26.42205 03 35 03.74 +20 45 41.3 19521 688 Ca3208 1998 12 10.21519 03 33 56.23 +20 42 21.5 19521 684 Ca3372 1998 12 10.24244 03 33 55.96 +20 42 21.1 19521 684 Ca3372 1998 12 11.95349 03 33 48.13 +20 41 58.1 19521 950 Ca3372 1998 12 12.21025 03 33 46.89 +20 41 53.7 19521 684 Ca3372 1998 12 12.28667 03 33 46.56 +20 41 53.4 19521 684 Ca3372 1999 01 06.15123 03 32 10.62 +20 37 01.6 19521 684 Ca3608 1999 01 06.18248 03 32 10.55 +20 37 01.3 19521 684 Ca3608 1999 01 09.20034 03 32 01.86 +20 36 35.0 19521 684 Ca3608 1999 01 09.23102 03 32 01.82 +20 36 35.8 19521 684 Ca3608 1999 01 22.27902 03 31 33.97 +20 35 10.7 20.6R 19521 568 Ca5544 1999 01 22.34266 03 31 33.86 +20 35 10.3 19521 568 Ca5544 1999 01 23.31906 03 31 32.43 +20 35 06.3 19521 568 Ca5544 1999 10 07.56587 03 44 17.61 +21 30 32.0 19521 568 Ca7322 1999 10 07.58927 03 44 17.53 +21 30 31.8 19521 568 Ca7322 1999 10 08.60839 03 44 14.00 +21 30 24.7 21.0R 19521 568 Ca7322 1999 10 08.63699 03 44 13.89 +21 30 24.6 20.8R 19521 568 Ca7322 1999 10 18.11690 03 43 37.49 +21 29 11.5 20.9R 19521 621 Ca7322 1999 10 18.15006 03 43 37.39 +21 29 10.9 20.5R 19521 621 Ca7322 1999 10 19.10898 03 43 33.38 +21 29 02.1 20.5R 19521 621 Ca7322 1999 10 19.14214 03 43 33.21 +21 29 01.6 20.7R 19521 621 Ca7322 1999 10 20.06748 03 43 29.31 +21 28 53.1 20.7R 19521 621 Ca7322 1999 10 20.10065 03 43 29.18 +21 28 52.9 20.5R 19521 621 Ca7322 1999 10 30.19999 03 42 43.66 +21 27 08.7 20.7R 19521 688 Ca7322 1999 10 30.29300 03 42 43.22 +21 27 06.6 19521 688 Ca7322 1999 10 30.38443 03 42 42.77 +21 27 06.2 19521 688 Ca7322 1999 10 31.34138 03 42 38.23 +21 26 54.6 20.5R 19521 688 Ca7322 1999 10 31.41119 03 42 37.89 +21 26 53.9 19521 688 Ca7322 1999 11 30.28159 03 40 06.59 +21 20 15.2 20.7R 19521 711 Ca8499 1999 11 30.33547 03 40 06.31 +21 20 14.7 20.9R 19521 711 Ca8499 1999 11 30.34670 03 40 06.28 +21 20 14.1 20.7R 19521 711 Ca8499 1999 11 30.36473 03 40 06.19 +21 20 14.1 20.8R 19521 711 Ca8499 1999 11 30.37458 03 40 06.14 +21 20 14.0 20.9R 19521 711 Ca8499 1999 12 01.25365 03 40 01.70 +21 20 01.2 20.8R 19521 711 Ca8499 1999 12 01.26141 03 40 01.70 +21 20 00.7 20.6R 19521 711 Ca8499 1999 12 01.26936 03 40 01.61 +21 20 00.9 20.6R 19521 711 Ca8499 1999 12 01.33854 03 40 01.27 +21 19 59.9 20.7R 19521 711 Ca8499 1999 12 01.34686 03 40 01.22 +21 19 59.6 20.7R 19521 711 Ca8499 1999 12 01.38074 03 40 01.06 +21 19 59.7 20.3R 19521 711 Ca8499 1999 12 03.29320 03 39 51.51 +21 19 33.2 21.2V 19521 691 Ca7793 1999 12 03.31566 03 39 51.34 +21 19 32.4 21.7V 19521 691 Ca7793 1999 12 03.33808 03 39 51.25 +21 19 31.7 21.8V 19521 691 Ca7793 1999 12 14.16740 03 38 59.11 +21 17 02.3 21.9V 19521 691 Ca7793 1999 12 14.19021 03 38 59.02 +21 17 01.3 20.9V 19521 691 Ca7793 1999 12 14.21267 03 38 58.96 +21 17 01.0 21.2V 19521 691 Ca7793 2000 09 30.30654 03 50 02.36 +22 05 13.3 22.0V 19521 829 Cf6392 2000 09 30.31291 03 50 02.32 +22 05 13.5 21.3R 19521 829 Cf6392 2000 09 30.36374 03 50 02.21 +22 05 13.3 19521 829 Cf6392 2000 09 30.37434 03 50 02.11 +22 05 13.0 19521 829 Cf6392 2000 11 25.01641 03 45 54.86 +21 56 14.3 20.5R 19521 621 Cc4698 2000 11 25.03829 03 45 54.73 +21 56 13.6 20.2R 19521 621 Cc4698 2000 11 25.05579 03 45 54.64 +21 56 13.5 20.5R 19521 621 Cc4698 2000 11 25.36396 03 45 53.03 +21 56 09.3 19521 684 Cc2190 2000 11 25.38228 03 45 52.94 +21 56 09.5 19521 684 Cc2190 2000 11 25.39941 03 45 52.86 +21 56 09.1 19521 684 Cc2190 2000 11 27.30659 03 45 43.00 +21 55 42.9 19521 684 Cc2190 2000 11 27.32768 03 45 42.90 +21 55 42.9 19521 684 Cc2190 2000 12 04.05218 03 45 08.64 +21 54 10.0 19521 621 Cc4698 2000 12 29.03097 03 43 16.20 +21 48 50.6 20.7R 19521 621 Cc4698 2000 12 29.04941 03 43 16.11 +21 48 50.4 20.6R 19521 621 Cc4698 2001 10 12.30163 03 54 52.08 +22 37 57.8 19.1 19521 304 Cf0913 2001 10 12.32825 03 54 51.98 +22 37 57.6 19521 304 Cf0913 2002 11 13.48952 03 57 59.42 +23 06 44.5 21. 19521 644 Cj0766 2003 11 19.16644 04 03 07.44 +23 38 45.2 22.0V 19521 691 Ck4096 2003 11 19.19451 04 03 07.27 +23 38 44.8 21.5V 19521 691 Ck4096 2003 11 19.22194 04 03 07.12 +23 38 44.8 21.5V 19521 691 Ck4096 2003 11 30.24434 04 02 08.78 +23 36 37.6 20.2R 19521 850 Cj6724 2003 11 30.28366 04 02 08.54 +23 36 36.0 19.9R 19521 850 Cj6724 2004 10 11.17526 04 11 40.81 +24 15 22.2 19521 621 Cl8906 2004 10 22.12737 04 10 59.36 +24 14 41.5 19521 621 Cl8906 2004 10 23.10211 04 10 55.18 +24 14 37.4 21. R 19521 621 Cl8906 2004 11 08.93293 04 09 36.31 +24 12 37.7 19521 621 Cl9530 2004 11 09.09462 04 09 35.51 +24 12 36.5 21. R 19521 621 Cl9530 2007 12 13.33541 04 23 57.051 +25 40 11.31 22.2R 19521 675 C~0B4R 2007 12 13.38219 04 23 56.789 +25 40 10.92 21.7R 19521 675 C~0B4R 2007 12 14.33831 04 23 51.783 +25 40 01.53 21.7R 19521 675 C~0B4R 2007 12 14.38509 04 23 51.503 +25 40 00.55 22.0R 19521 675 C~0B4R 2018 01 23.237662 05 22 25.063 +29 52 09.67 19521 673 C~2Wjo 2018 01 23.239977 05 22 25.063 +29 52 09.68 19521 673 C~2Wjo
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 -0.17 0.00 -0.33 2 2.0641 0.00 -0.54 0.00 -0.22 3 5.1356 0.00 0.56 0.00 -0.29 4 5.1357 0.00 0.87 0.00 -0.22 5 5.1357 0.00 1.04 0.00 -0.18 6 7.0911 0.00 -0.13 0.00 -0.08 7 7.0913 0.00 0.11 0.00 -0.26 8 7.1045 0.00 -0.56 0.00 0.04 9 7.1045 0.00 -0.38 0.00 0.36 10 7.1045 0.00 0.22 0.00 0.47 11 7.1045 0.00 -0.11 0.00 0.48 12 7.1046 0.00 0.27 0.00 0.21 13 7.1046 0.00 -0.05 0.00 0.22 14 7.1068 0.00 0.33 0.00 -0.00 15 7.1069 0.00 0.16 0.00 0.21 16 7.1069 0.00 -0.02 0.00 -0.09 17 7.1069 0.00 0.24 0.00 0.02 18 7.1069 0.00 -0.01 0.00 0.14 19 7.1070 0.00 0.18 0.00 0.50 20 7.1070 0.00 0.05 0.00 0.07 21 7.1070 0.00 0.02 0.00 0.08 22 7.1070 0.00 0.21 0.00 0.10 23 7.1097 0.00 -0.13 0.00 -0.00 24 7.1098 0.00 -0.01 0.00 0.13 25 7.1098 0.00 -0.19 0.00 0.10 26 7.1098 0.00 -0.04 0.00 0.17 27 7.1099 0.00 -0.13 0.00 0.19 28 7.1100 0.00 0.14 0.00 0.12 29 7.1100 0.00 0.20 0.00 0.12 30 7.1101 0.00 0.16 0.00 0.16 31 7.1102 0.00 0.22 0.00 0.27 32 7.1102 0.00 0.06 0.00 -0.08 33 7.1103 0.00 0.64 0.00 0.24 34 7.1103 0.00 0.44 0.00 0.07 35 7.1481 0.00 1.15 0.00 -1.31 36 7.1482 0.00 -0.96 0.00 -1.33 37 7.1529 0.00 0.61 0.00 -0.63 38 7.1536 0.00 -0.29 0.00 -1.47 39 7.1538 0.00 0.11 0.00 -0.72 40 7.2218 0.00 -0.20 0.00 -0.45 41 7.2219 0.00 0.18 0.00 -0.46 42 7.2302 0.00 -1.16 0.00 -0.35 43 7.2303 0.00 -0.47 0.00 0.71 44 7.2660 0.00 -0.16 0.00 0.21 45 7.2662 0.00 -0.28 0.00 0.11 46 7.2688 0.00 -0.18 0.00 0.34 47 7.9731 0.00 0.19 0.00 0.41 48 7.9732 0.00 0.22 0.00 0.36 49 7.9760 0.00 0.39 0.00 -0.20 50 7.9761 0.00 0.27 0.00 -0.10 51 8.0020 0.00 -0.37 0.00 0.60 52 8.0021 0.00 0.22 0.00 0.30 53 8.0048 0.00 -0.02 0.00 0.16 54 8.0048 0.00 -0.46 0.00 -0.03 55 8.0074 0.00 -0.40 0.00 0.04 56 8.0075 0.00 -0.20 0.00 0.15 57 8.0351 0.00 -0.52 0.00 1.14 58 8.0354 0.00 -0.42 0.00 0.08 59 8.0356 0.00 -0.57 0.00 0.72 60 8.0382 0.00 -0.36 0.00 0.13 61 8.0384 0.00 -0.37 0.00 0.25 62 8.1202 0.00 -0.11 0.00 -0.08 63 8.1204 0.00 -0.16 0.00 0.20 64 8.1204 0.00 0.25 0.00 -0.24 65 8.1204 0.00 0.29 0.00 0.02 66 8.1205 0.00 0.30 0.00 0.06 67 8.1229 0.00 0.16 0.00 -0.31 68 8.1229 0.00 0.75 0.00 -0.70 69 8.1229 0.00 0.01 0.00 -0.39 70 8.1231 0.00 0.22 0.00 -0.40 71 8.1231 0.00 0.11 0.00 -0.58 72 8.1232 0.00 0.30 0.00 0.01 73 8.1285 0.00 0.85 0.00 0.53 74 8.1285 0.00 0.01 0.00 0.04 75 8.1286 0.00 0.36 0.00 -0.34 76 8.1582 0.00 0.28 0.00 0.09 77 8.1583 0.00 0.53 0.00 -0.60 78 8.1584 0.00 1.21 0.00 -0.60 79 8.9553 0.00 0.11 0.00 -0.14 80 8.9553 0.00 -0.21 0.00 0.08 81 8.9555 0.00 0.37 0.00 0.06 82 8.9555 0.00 -0.67 0.00 -0.20 83 9.1079 0.00 0.08 0.00 0.48 84 9.1079 0.00 -0.15 0.00 0.08 85 9.1080 0.00 -0.13 0.00 0.22 86 9.1088 0.00 -0.33 0.00 0.16 87 9.1089 0.00 -0.24 0.00 0.61 88 9.1089 0.00 -0.09 0.00 0.45 89 9.1141 0.00 -0.24 0.00 0.28 90 9.1142 0.00 -0.08 0.00 0.57 91 9.1326 0.00 0.09 0.00 -0.06 92 9.2010 0.00 -0.85 0.00 0.01 93 9.2010 0.00 -1.14 0.00 0.03 94 9.9875 0.00 -0.06 0.00 -0.27 95 9.9876 0.00 -0.06 0.00 -0.32 96 11.0749 0.00 0.01 0.00 0.40 97 12.0898 0.00 0.27 0.00 -0.21 98 12.0899 0.00 -0.03 0.00 -0.31 99 12.0899 0.00 -0.08 0.00 -0.02 100 12.1201 0.00 2.01 0.00 0.61 101 12.1202 0.00 1.57 0.00 -0.52 102 12.9851 0.00 -0.23 0.00 0.35 103 13.0151 0.00 0.75 0.00 -0.13 104 13.0177 0.00 -0.51 0.00 0.75 105 13.0638 0.00 -0.35 0.00 -0.40 106 13.0643 0.00 0.08 0.00 -0.19 107 16.1560 0.00 -0.20 0.00 -0.19 108 16.1561 0.00 -0.36 0.00 -0.09 109 16.1587 0.00 0.28 0.00 0.45 110 16.1588 0.00 -0.18 0.00 -0.04 111 26.2693 0.00 0.03 0.00 -0.18 112 26.2693 0.00 0.18 0.00 -0.15
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.
19521 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.131 46.131 46.131 ecceobj 0.108 0.108 0.108 incobj 11.999 11.999 11.999 qmin 40.237 40.214 40.272 qmax 51.635 51.629 51.590 amean 45.789 45.789 45.783 amin 45.414 45.417 45.396 amax 46.202 46.203 46.198 emean 0.105 0.105 0.105 emin 0.094 0.094 0.094 emax 0.118 0.118 0.117 imean 11.009 11.010 11.012 imin 10.584 10.585 10.585 imax 11.401 11.406 11.407 excite_mean 0.218 0.218 0.218 fracstop 1.000 1.000 1.000 cjmean 3.065 3.065 3.065 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 175.8 175.8 175.7 kozaiamp 180.0 180.0 179.9