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: 99GS46 # Created Sat Apr 20 01:09:54 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 34 observations of 35 # Arc: 17.13y # First observation: 1999/04/12 # Last observation: 2016/05/29 # Chi-squared of fit: 198.35 DOF: 62 RMS: 0.43 # Min/Max residuals: -0.76 1.38 # Exact a, adot, b, bdot, g, gdot: 1.047524E-05 2.210760E-02 4.007010E-07 -2.003996E-03 2.330942E-02 1.891712E-03 # Covariance matrix: 1.2948E-13 -1.4883E-14 -1.0563E-15 8.6200E-16 1.2340E-13 -2.7897E-14 -1.4883E-14 1.8283E-14 1.7701E-15 -1.5408E-15 3.9463E-14 4.7511E-14 -1.0563E-15 1.7701E-15 8.1951E-14 -6.8466E-15 3.4770E-15 4.9896E-15 8.6200E-16 -1.5408E-15 -6.8466E-15 1.4928E-15 -3.2139E-15 -4.3370E-15 1.2340E-13 3.9463E-14 3.4770E-15 -3.2139E-15 5.5625E-13 9.4805E-14 -2.7897E-14 4.7511E-14 4.9896E-15 -4.3370E-15 9.4805E-14 1.3388E-13 # lat0 lon0 xBary yBary zBary JD0 -0.102632 -154.459949 0.068412 -0.002007 -1.007803 2451280.635053 # Heliocentric elements and errors Epoch: 2451280.5000 = 1999/04/12 Mean Anomaly: 79.12324 +/- 0.050 Argument of Peri: 92.43359 +/- 0.063 Long of Asc Node: 24.35260 +/- 0.000 Inclination: 5.19769 +/- 0.000 Eccentricity: 0.08357921 +/- 0.0000 Semi-Major Axis: 44.29569855 +/- 0.0055 Time of Perihelion: 2427613.5478 +/- 15.6 Perihelion: 40.59349892 +/- 0.0051 Aphelion: 47.99789819 +/- 0.0060 Period (y) 294.8157 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -39.63939493 +/- 0.0012 Ecliptic Y -18.86901568 +/- 0.0006 Ecliptic Z -0.07684943 +/- 0.0000 Ecliptic XDOT 0.00091705 +/- 0.0000 Ecliptic YDOT -0.00242978 +/- 0.0000 Ecliptic ZDOT -0.00023576 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.90128231 +/- 0.0011 Geocenter to KBO 42.90109592 +/- 0.0014 # Hcoef: 6.68
The following table shows the complete astrometric record for 99GS46. 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 (99GS46) followed by the observatory code and reference code for the source of the astrometry.
1999 04 12.13431 13 34 32.37 -09 58 13.9 99GS46 809 Ca5906 1999 04 12.14679 13 34 32.30 -09 58 13.2 23. V 99GS46 809 Ca5906 1999 04 12.15905 13 34 32.25 -09 58 13.0 99GS46 809 Ca5906 1999 04 13.14896 13 34 27.84 -09 57 49.0 99GS46 809 Ca5906 1999 04 13.16127 13 34 27.78 -09 57 48.1 99GS46 809 Ca5906 1999 04 13.17359 13 34 27.72 -09 57 48.0 99GS46 809 Ca5906 1999 05 16.96971 13 32 05.63 -09 44 43.8 99GS46 809 Ca5906 1999 05 17.01077 13 32 05.47 -09 44 42.9 22.6R 99GS46 809 Ca5906 1999 05 17.11468 13 32 05.10 -09 44 41.1 99GS46 809 Ca5906 1999 05 17.16571 13 32 04.91 -09 44 40.3 22.8R 99GS46 809 Ca5906 1999 05 17.21628 13 32 04.70 -09 44 39.5 99GS46 809 Ca5906 1999 05 17.27549 13 32 04.47 -09 44 38.3 99GS46 809 Ca5906 2000 03 31.55654 13 39 55.65 -10 36 17.3 22.9R 99GS46 568 Cb1943 2000 03 31.58034 13 39 55.55 -10 36 16.8 22.9R 99GS46 568 Cb1943 2000 04 02.53233 13 39 47.22 -10 35 32.3 22.9R 99GS46 568 Cb1943 2000 04 02.56170 13 39 47.11 -10 35 31.7 22.9R 99GS46 568 Cb1943 2000 04 02.57414 13 39 47.01 -10 35 30.5 22.9R 99GS46 568 Cb1943 2000 04 02.60325 13 39 46.91 -10 35 29.7 22.9R 99GS46 568 Cb1943 2000 05 02.45255 13 37 36.12 -10 23 38.7 23.1R 99GS46 568 Cb5144 2000 05 02.50806 13 37 35.87 -10 23 37.8 23.0R 99GS46 568 Cb5144 2003 04 29.45770 13 51 41.88 -12 04 40.5 22.7R 99GS46 568 Ch9557 2003 04 30.49485 13 51 37.33 -12 04 16.2 99GS46 568 Ch9557 2006 04 26.20492 14 05 49.03 -13 41 59.7 21.4R 99GS46 807 Cr3547 2006 04 26.29101 14 05 48.64 -13 41 57.5 99GS46 807 Cr3547 2006 05 26.227500 14 03 43.34 -13 31 21.0 99GS46 645 C~1eMn 2006 05 26.230817 14 03 43.33 -13 31 20.9 99GS46 645 C~1eMn 2006 05 26.283289 14 03 43.34 -13 31 21.0 99GS46 645 C~1eMn 2006 05 27.236215 14 03 39.65 -13 31 02.0 99GS46 645 C~1eMn 2006 05 27.237037 14 03 39.65 -13 31 02.0 99GS46 645 C~1eMn 2006 05 27.239525 14 03 39.65 -13 31 01.9 99GS46 645 C~1eMn 2015 04 13.18074 14 48 37.65 -18 09 14.4 23.2V 99GS46 W84 C~2Y3p 2015 04 13.33132 14 48 37.01 -18 09 11.9 99GS46 W84 C~2Y3p 2015 04 13.38114 14 48 36.79 -18 09 11.1 99GS46 W84 C~2Y3p 2016 05 29.21246 14 49 51.718 -18 21 48.76 23.1R 99GS46 G37 C~2bkO 2016 05 29.28244 14 49 51.423 -18 21 47.46 99GS46 G37 C~2bkO
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 0.75 0.00 -0.68
2 0.0000 0.00 0.54 0.00 -0.28
3 0.0001 0.00 0.62 0.00 -0.38
4 0.0028 0.00 0.28 0.00 -0.53
5 0.0028 0.00 0.21 0.00 0.07
6 0.0028 0.00 0.14 0.00 -0.13
7 0.0954 0.00 -0.32 0.00 -0.05
8 0.0955 0.00 -0.42 0.00 0.02
9 0.0958 0.00 -0.11 0.00 -0.28
10 0.0959 0.00 -0.09 0.00 -0.52
11 0.0960 0.00 -0.40 0.00 -0.75
12 0.0962 0.00 -0.54 0.00 -0.76
13 0.9704 0.00 -0.15 0.00 0.96
14 0.9704 0.00 -0.11 0.00 0.92
15 0.9758 0.00 -0.05 0.00 0.44
16 0.9758 0.00 0.22 0.00 0.35
17 0.9759 0.00 -0.47 0.00 1.26
18 0.9760 0.00 -0.06 0.00 1.38
19 1.0577 0.00 0.17 0.00 0.44
20 1.0578 0.00 0.00 0.00 0.04
21 4.0474 0.00 0.13 0.00 -0.20
22 4.0503 0.00 0.19 0.00 0.13
23 7.0392 0.00 0.02 0.00 -0.06
24 7.0394 0.00 0.04 0.00 0.20
25 7.1214 0.00 -0.16 0.00 -0.43
26 7.1214 0.00 -0.13 0.00 -0.39
27 7.1216 0.00 ( 2.97) 0.00 ( -1.49)
28 7.1242 0.00 -0.20 0.00 -0.49
29 7.1242 0.00 -0.16 0.00 -0.50
30 7.1242 0.00 -0.02 0.00 -0.45
31 16.0029 0.00 0.17 0.00 0.00
32 16.0033 0.00 0.16 0.00 0.05
33 16.0034 0.00 0.03 0.00 0.03
34 17.1309 0.00 -0.08 0.00 0.25
35 17.1311 0.00 -0.10 0.00 0.29
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.
99GS46 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.302 44.302 44.302 ecceobj 0.085 0.085 0.085 incobj 5.196 5.196 5.196 qmin 39.785 39.794 39.786 qmax 49.741 49.679 49.703 amean 44.619 44.619 44.619 amin 44.259 44.265 44.251 amax 45.012 45.010 45.008 emean 0.089 0.089 0.089 emin 0.074 0.074 0.074 emax 0.105 0.105 0.105 imean 4.859 4.858 4.859 imin 4.151 4.150 4.150 imax 5.466 5.465 5.471 excite_mean 0.123 0.123 0.123 fracstop 1.000 1.000 1.000 cjmean 3.090 3.090 3.090 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 179.4 179.2 179.5 kozaiamp 180.0 180.0 180.0