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: 99RW214 # Created Wed Dec 25 02:07:59 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 29 observations of 29 # Arc: 17.88y # First observation: 1998/09/25 # Last observation: 2016/08/12 # Chi-squared of fit: 438.33 DOF: 52 RMS: 0.69 # Min/Max residuals: -1.33 1.38 # Exact a, adot, b, bdot, g, gdot: 1.937630E-05 2.292182E-02 -5.017948E-06 5.450637E-04 2.388161E-02 7.256333E-04 # Covariance matrix: 1.2539E-13 -5.4743E-14 1.0837E-15 -1.1666E-15 -6.2459E-14 -1.1936E-13 -5.4743E-14 5.4886E-14 -1.1879E-15 1.2795E-15 7.5949E-14 1.3086E-13 1.0837E-15 -1.1879E-15 8.0343E-14 -5.6090E-15 -1.6835E-15 -2.8852E-15 -1.1666E-15 1.2795E-15 -5.6090E-15 1.0395E-15 1.8351E-15 3.1080E-15 -6.2459E-14 7.5949E-14 -1.6835E-15 1.8351E-15 3.3202E-13 1.8608E-13 -1.1936E-13 1.3086E-13 -2.8852E-15 3.1080E-15 1.8608E-13 3.1786E-13 # lat0 lon0 xBary yBary zBary JD0 -0.005816 0.059923 -0.035712 -0.000337 -0.993977 2451081.782594 # Heliocentric elements and errors Epoch: 2451082.5000 = 1998/09/26 Mean Anomaly: 72.53859 +/- 0.097 Argument of Peri: 283.49531 +/- 0.107 Long of Asc Node: 0.35783 +/- 0.001 Inclination: 1.35665 +/- 0.000 Eccentricity: 0.03360679 +/- 0.0000 Semi-Major Axis: 43.26687656 +/- 0.0037 Time of Perihelion: 2430136.6322 +/- 28.2 Perihelion: 41.81281592 +/- 0.0037 Aphelion: 44.72093721 +/- 0.0040 Period (y) 284.6043 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.87554631 +/- 0.0010 Ecliptic Y 0.08016964 +/- 0.0000 Ecliptic Z -0.00444295 +/- 0.0000 Ecliptic XDOT 0.00008050 +/- 0.0000 Ecliptic YDOT 0.00263698 +/- 0.0000 Ecliptic ZDOT 0.00006244 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.87560090 +/- 0.0010 Geocenter to KBO 41.87324823 +/- 0.0010 # Hcoef: 7.27
The following table shows the complete astrometric record for 99RW214. 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 (99RW214) followed by the observatory code and reference code for the source of the astrometry.
1998 09 25.281863 00 00 13.75 +00 01 06.6 99RW214 645 C~1gln 1998 09 25.282280 00 00 13.75 +00 01 06.6 99RW214 645 C~1gln 1998 09 25.282685 00 00 13.74 +00 01 06.6 99RW214 645 C~1gln 1998 09 25.283102 00 00 13.74 +00 01 06.6 99RW214 645 C~1gln 1998 09 25.285174 00 00 13.73 +00 01 06.5 99RW214 645 C~1gln 1998 09 25.285590 00 00 13.73 +00 01 06.5 99RW214 645 C~1gln 1999 09 06.40294 00 06 23.02 +00 43 01.7 22.9R 99RW214 568 Ca8546 1999 09 06.45602 00 06 22.78 +00 43 00.1 23.2R 99RW214 568 Ca8546 1999 09 06.49330 00 06 22.62 +00 42 59.3 23.7R 99RW214 568 Ca8546 1999 09 10.45020 00 06 06.14 +00 41 13.2 23.8R 99RW214 568 Ca8546 1999 09 10.46065 00 06 06.12 +00 41 13.1 23.6R 99RW214 568 Ca8546 1999 10 09.44664 00 04 00.86 +00 27 48.5 22.8R 99RW214 568 Ca8546 1999 10 09.49041 00 04 00.68 +00 27 47.4 23.4R 99RW214 568 Ca8546 1999 11 09.31979 00 02 09.54 +00 15 54.2 23.7R 99RW214 568 Ca8546 1999 11 09.36788 00 02 09.41 +00 15 53.6 23.3R 99RW214 568 Ca8546 2000 08 27.33078 00 11 45.55 +01 19 57.0 22.8R 99RW214 807 Cc0856 2000 08 27.40910 00 11 45.24 +01 19 54.2 99RW214 807 Cc0856 2000 08 28.51365 00 11 41.05 +01 19 27.1 23.1R 99RW214 568 Cc0856 2000 08 28.56796 00 11 40.86 +01 19 25.8 23.0R 99RW214 568 Cc0856 2000 12 27.21565 00 06 07.095 +00 43 53.09 23.3R 99RW214 568 Cl7431 2000 12 28.22237 00 06 08.286 +00 44 01.07 99RW214 568 Cl7431 2013 10 05.33816 01 10 45.09 +07 59 26.9 23.4R 99RW214 695 C~0zdB 2013 10 05.37917 01 10 44.90 +07 59 25.7 99RW214 695 C~0zdB 2013 10 06.37791 01 10 40.53 +07 58 59.2 99RW214 695 C~0zdB 2013 11 06.26204 01 08 27.44 +07 45 34.2 22.9R 99RW214 G37 C~0yiW 2013 11 06.32036 01 08 27.24 +07 45 31.9 99RW214 G37 C~0yiW 2016 08 12.383484 01 27 56.11 +09 47 01.0 99RW214 W84 C~3i92 2016 08 12.389589 01 27 56.11 +09 47 01.0 99RW214 W84 C~3i92 2016 08 12.391800 01 27 56.09 +09 47 01.3 99RW214 W84 C~3i92
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 -1.24 0.00 0.67
2 0.0000 0.00 -1.21 0.00 0.69
3 0.0000 0.00 -1.33 0.00 0.70
4 0.0000 0.00 -1.30 0.00 0.71
5 0.0000 0.00 -1.31 0.00 0.67
6 0.0000 0.00 -1.29 0.00 0.68
7 0.9476 0.00 0.67 0.00 -0.37
8 0.9478 0.00 0.41 0.00 -0.57
9 0.9479 0.00 0.35 0.00 -0.39
10 0.9587 0.00 0.48 0.00 -0.68
11 0.9587 0.00 0.85 0.00 -0.50
12 1.0381 0.00 1.27 0.00 -0.32
13 1.0382 0.00 1.38 0.00 -0.24
14 1.1226 0.00 1.12 0.00 -0.43
15 1.1228 0.00 1.23 0.00 -0.17
16 1.9221 0.00 0.47 0.00 0.61
17 1.9223 0.00 0.28 0.00 -0.32
18 1.9253 0.00 -0.45 0.00 -0.73
19 1.9255 0.00 -0.16 0.00 -0.71
20 2.2558 0.00 0.22 0.00 0.23
21 2.2586 0.00 0.21 0.00 0.23
22 15.0282 0.00 -0.59 0.00 -0.00
23 15.0283 0.00 -0.68 0.00 -0.12
24 15.0311 0.00 -0.05 0.00 -0.16
25 15.1156 0.00 -0.57 0.00 0.34
26 15.1158 0.00 -0.06 0.00 -0.55
27 17.8812 0.00 0.38 0.00 0.10
28 17.8812 0.00 0.52 0.00 0.15
29 17.8812 0.00 0.28 0.00 0.47
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.
99RW214 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.208 43.208 43.208 ecceobj 0.031 0.031 0.031 incobj 1.360 1.360 1.360 qmin 40.931 40.934 40.937 qmax 45.146 45.150 45.122 amean 42.947 42.947 42.947 amin 42.620 42.622 42.619 amax 43.279 43.282 43.278 emean 0.025 0.025 0.025 emin 0.004 0.004 0.004 emax 0.043 0.043 0.043 imean 2.333 2.333 2.333 imin 1.244 1.244 1.243 imax 3.100 3.101 3.100 excite_mean 0.048 0.048 0.048 fracstop 1.000 1.000 1.000 cjmean 3.086 3.086 3.086 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 190.1 190.0 190.1 kozaiamp 180.0 180.0 179.9