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: 99RG215
# Created Sun Nov 24 02:08:00 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 39 observations of 39
# Arc: 21.92y
# First observation: 1999/09/07
# Last observation: 2021/08/08
# Chi-squared of fit: 85.29 DOF: 72 RMS: 0.26
# Min/Max residuals: -0.49 0.61
# Exact a, adot, b, bdot, g, gdot:
1.571595E-05 2.154857E-02 1.995509E-06 6.464877E-05 2.271413E-02 -1.448967E-03
# Covariance matrix:
9.8131E-14 -1.7359E-14 4.3092E-17 -3.8321E-17 -1.7918E-14 -2.7006E-14
-1.7359E-14 1.1221E-14 -3.6645E-17 3.2531E-17 1.4432E-14 2.2937E-14
4.3092E-17 -3.6645E-17 8.3184E-14 -4.6689E-15 -4.1550E-17 -7.7963E-17
-3.8321E-17 3.2531E-17 -4.6689E-15 4.4125E-16 4.6915E-17 6.9228E-17
-1.7918E-14 1.4432E-14 -4.1550E-17 4.6915E-17 1.5890E-13 3.0961E-14
-2.7006E-14 2.2937E-14 -7.7963E-17 6.9228E-17 3.0961E-14 4.8808E-14
# lat0 lon0 xBary yBary zBary JD0
0.174470 -22.852066 -0.121760 0.002793 -0.993534 2451428.914683
# Heliocentric elements and errors
Epoch: 2451428.5000 = 1999/09/07
Mean Anomaly: 302.39412 +/- 0.028
Argument of Peri: 110.02150 +/- 0.035
Long of Asc Node: 292.61599 +/- 0.011
Inclination: 0.24275 +/- 0.000
Eccentricity: 0.07599467 +/- 0.0000
Semi-Major Axis: 46.72368676 +/- 0.0033
Time of Perihelion: 2470095.2365 +/- 13.9
Perihelion: 43.17293548 +/- 0.0033
Aphelion: 50.27443805 +/- 0.0038
Period (y) 319.3845 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 41.54053607 +/- 0.0007
Ecliptic Y -17.36846648 +/- 0.0003
Ecliptic Z 0.13416546 +/- 0.0000
Ecliptic XDOT 0.00084364 +/- 0.0000
Ecliptic YDOT 0.00246965 +/- 0.0000
Ecliptic ZDOT 0.00000732 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.02556768 +/- 0.0007
Geocenter to KBO 44.02553714 +/- 0.0008
# Hcoef: 7.25
The following table shows the complete astrometric record for 99RG215. 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 (99RG215) followed by the observatory code and reference code for the source of the astrometry.
1999 09 07.41394 22 35 10.86 -08 43 28.2 23.6R 99RG215 568 Ca8546 1999 09 07.44753 22 35 10.70 -08 43 29.1 23.9R 99RG215 568 Ca8546 1999 09 07.48067 22 35 10.58 -08 43 29.8 24.3R 99RG215 568 Ca8546 1999 09 09.38498 22 35 02.62 -08 44 17.0 23.3R 99RG215 568 Ca8546 1999 09 09.39657 22 35 02.56 -08 44 17.3 23.1R 99RG215 568 Ca8547 1999 10 09.35104 22 33 10.59 -08 55 20.7 23.4R 99RG215 568 Ca8547 1999 10 09.42045 22 33 10.39 -08 55 21.9 23.6R 99RG215 568 Ca8547 1999 10 11.35049 22 33 04.52 -08 55 57.0 23.8R 99RG215 568 Ca8547 2000 08 25.19228 22 40 42.16 -08 10 19.8 23.1R 99RG215 807 Cc0856 2000 08 25.25424 22 40 41.90 -08 10 21.7 99RG215 807 Cc0856 2000 08 29.15295 22 40 25.43 -08 12 00.3 99RG215 809 Cb7614 2000 08 29.25209 22 40 25.00 -08 12 02.6 99RG215 809 Cb7614 2000 08 30.13214 22 40 21.29 -08 12 24.4 99RG215 809 Cb7614 2000 08 30.21740 22 40 20.93 -08 12 26.5 99RG215 809 Cb7614 2000 08 30.30047 22 40 20.55 -08 12 28.9 22.8R 99RG215 809 Cb7614 2000 08 30.34795 22 40 20.37 -08 12 29.9 99RG215 809 Cb7614 2000 08 30.39124 22 40 20.16 -08 12 31.2 99RG215 809 Cb7614 2005 08 08.12376 23 04 59.39 -05 40 22.6 22.1R 99RG215 807 Co3301 2005 08 08.23993 23 04 58.97 -05 40 25.1 99RG215 807 Co3301 2005 08 09.12890 23 04 55.80 -05 40 44.9 99RG215 807 Co3301 2013 11 23.08392 23 36 11.501 -02 20 18.01 23.9r 99RG215 W84 C~4yC4 2016 10 07.05381 23 52 25.160 -00 34 29.41 22.7i 99RG215 W84 C~4yC4 2017 07 30.46349 00 01 21.72 +00 23 38.8 24.1r 99RG215 T09 C~7b9r 2017 07 30.52449 00 01 21.59 +00 23 38.3 24.1r 99RG215 T09 C~7b9r 2017 07 30.52658 00 01 21.57 +00 23 38.1 24.1r 99RG215 T09 C~7b9r 2017 07 30.56916 00 01 21.47 +00 23 37.5 23.9r 99RG215 T09 C~7b9r 2017 07 30.59918 00 01 21.40 +00 23 37.0 23.9r 99RG215 T09 C~7b9r 2017 08 18.30364 00 00 28.942 +00 18 00.85 24.2r 99RG215 W84 C~4yC4 2017 08 18.30501 00 00 28.954 +00 18 00.63 23.8i 99RG215 W84 C~4yC4 2017 09 23.32804 23 58 06.83 +00 02 40.8 23.2R 99RG215 G37 C~2LPe 2017 09 23.41031 23 58 06.50 +00 02 39.0 99RG215 G37 C~2LPe 2017 09 27.15527 23 57 50.586 +00 00 55.33 23.3i 99RG215 W84 C~4yC4 2017 10 11.19736 23 56 52.585 -00 05 22.39 22.8z 99RG215 W84 C~4yC4 2017 11 15.03514 23 55 01.363 -00 17 32.31 23.2r 99RG215 W84 C~4yC4 2017 11 17.02624 23 54 57.201 -00 17 59.65 23.5g 99RG215 W84 C~4yC4 2018 09 14.30257 00 03 30.312 +00 37 51.60 23.8r 99RG215 W84 C~4yC4 2021 08 08.365550 00 19 54.984 +02 24 33.58 23.5G 99RG215 G37 C~4xMU 2021 08 08.413950 00 19 54.857 +02 24 32.83 99RG215 G37 C~4xMU 2021 08 08.459830 00 19 54.745 +02 24 32.10 99RG215 G37 C~4xMU
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 0.01 0.00 -0.43
2 0.0001 0.00 -0.23 0.00 -0.49
3 0.0002 0.00 0.09 0.00 -0.37
4 0.0054 0.00 0.14 0.00 -0.39
5 0.0054 0.00 -0.02 0.00 -0.41
6 0.0874 0.00 0.32 0.00 -0.28
7 0.0876 0.00 0.61 0.00 -0.21
8 0.0929 0.00 0.45 0.00 -0.49
9 0.9659 0.00 0.07 0.00 0.50
10 0.9660 0.00 0.14 0.00 0.16
11 0.9767 0.00 -0.25 0.00 -0.14
12 0.9770 0.00 -0.30 0.00 0.07
13 0.9794 0.00 -0.20 0.00 0.53
14 0.9796 0.00 -0.09 0.00 0.59
15 0.9798 0.00 -0.43 0.00 0.29
16 0.9800 0.00 -0.08 0.00 0.48
17 0.9801 0.00 -0.45 0.00 0.27
18 5.9184 0.00 -0.01 0.00 0.16
19 5.9188 0.00 0.00 0.00 0.23
20 5.9212 0.00 0.20 0.00 0.21
21 14.2113 0.00 0.07 0.00 -0.20
22 17.0832 0.00 -0.24 0.00 -0.37
23 17.8947 0.00 -0.04 0.00 -0.05
24 17.8949 0.00 0.10 0.00 0.31
25 17.8949 0.00 -0.13 0.00 0.14
26 17.8950 0.00 -0.16 0.00 0.14
27 17.8951 0.00 -0.17 0.00 0.07
28 17.9463 0.00 -0.12 0.00 0.03
29 17.9463 0.00 0.13 0.00 -0.16
30 18.0449 0.00 0.05 0.00 -0.01
31 18.0452 0.00 0.43 0.00 0.46
32 18.0554 0.00 -0.02 0.00 -0.09
33 18.0939 0.00 -0.06 0.00 0.06
34 18.1892 0.00 0.07 0.00 -0.11
35 18.1947 0.00 -0.21 0.00 0.02
36 19.0195 0.00 0.14 0.00 -0.28
37 21.9191 0.00 0.09 0.00 -0.09
38 21.9192 0.00 0.02 0.00 -0.08
39 21.9194 0.00 0.09 0.00 -0.09
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.
99RG215 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.674 46.674 46.674 ecceobj 0.076 0.076 0.076 incobj 0.243 0.243 0.243 qmin 42.254 42.254 42.240 qmax 50.928 50.943 50.891 amean 46.453 46.453 46.453 amin 46.070 46.081 46.079 amax 46.860 46.867 46.862 emean 0.074 0.074 0.074 emin 0.062 0.062 0.062 emax 0.087 0.087 0.086 imean 1.863 1.863 1.863 imin 1.466 1.466 1.465 imax 2.221 2.221 2.221 excite_mean 0.081 0.081 0.081 fracstop 1.000 1.000 1.000 cjmean 3.124 3.124 3.124 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 188.4 188.4 188.3 kozaiamp 180.0 180.0 180.0