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: 13JW65 # Created Fri Nov 22 02:09:27 2024 # Orbit generated from Bernstein formalism # Fitting 27 observations of 30 # Arc: 4.10y # First observation: 2011/06/07 # Last observation: 2015/07/14 Preliminary a, adot, b, bdot, g, gdot: 0.000979 0.036354 0.000051 0.002061 0.029681 0.000000 # Chi-squared of fit: 21.60 DOF: 48 RMS: 0.16 # Min/Max residuals: -0.37 0.36 # Exact a, adot, b, bdot, g, gdot: 1.915673E-05 3.749157E-02 7.293808E-07 2.125583E-03 3.065216E-02 4.800216E-03 # Covariance matrix: 3.3274E-13 -2.6984E-13 7.9839E-15 -1.1820E-14 -1.0572E-13 -1.3148E-12 -2.6984E-13 3.4934E-13 -1.3352E-14 1.9611E-14 1.1502E-13 2.1222E-12 7.9839E-15 -1.3352E-14 2.0521E-13 -7.3596E-14 -1.7662E-15 -9.1993E-14 -1.1820E-14 1.9611E-14 -7.3596E-14 3.6780E-14 3.3237E-15 1.3472E-13 -1.0572E-13 1.1502E-13 -1.7662E-15 3.3237E-15 3.0204E-13 6.3636E-13 -1.3148E-12 2.1222E-12 -9.1993E-14 1.3472E-13 6.3636E-13 1.4428E-11 # lat0 lon0 xBary yBary zBary JD0 -4.800865 -122.497178 -0.321335 -0.080743 -0.960527 2455719.889316 # Heliocentric elements and errors Epoch: 2455710.5000 = 2011/05/29 Mean Anomaly: 16.38287 +/- 0.009 Argument of Peri: 272.21783 +/- 0.019 Long of Asc Node: 292.90039 +/- 0.002 Inclination: 5.69759 +/- 0.000 Eccentricity: 0.32081192 +/- 0.0001 Semi-Major Axis: 47.53159786 +/- 0.0060 Time of Perihelion: 2450263.4742 +/- 2.6 Perihelion: 32.28289482 +/- 0.0063 Aphelion: 62.78030089 +/- 0.0092 Period (y) 327.7041 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -17.70847423 +/- 0.0003 Ecliptic Y -28.40496080 +/- 0.0005 Ecliptic Z -2.73032592 +/- 0.0001 Ecliptic XDOT 0.00258397 +/- 0.0000 Ecliptic YDOT -0.00216707 +/- 0.0000 Ecliptic ZDOT 0.00015335 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 33.58402205 +/- 0.0004 Geocenter to KBO 32.62412671 +/- 0.0006 # Hcoef: 6.89
The following table shows the complete astrometric record for 13JW65. 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 (13JW65) followed by the observatory code and reference code for the source of the astrometry.
2011 06 07.38855 15 36 08.307 -24 16 26.70 22.3w 13JW65 F51 C~1w3u 2011 06 07.40274 15 36 08.204 -24 16 26.50 22.3w 13JW65 F51 C~1w3u 2011 06 07.41691 15 36 08.143 -24 16 26.19 22.3w 13JW65 F51 C~1w3u 2011 06 07.43111 15 36 08.069 -24 16 25.77 22.3w 13JW65 F51 C~1w3u 2012 05 12.45089 15 47 56.124 -24 46 54.14 22.7G 13JW65 F51 C~2rXy 2012 06 12.34507 15 44 51.390 -24 36 17.31 22.1w 13JW65 F51 C~1w3u 2012 06 12.35907 15 44 51.342 -24 36 17.18 22.2w 13JW65 F51 C~1w3u 2012 06 12.37306 15 44 51.266 -24 36 17.06 22.3w 13JW65 F51 C~1w3u 2012 06 12.38710 15 44 51.152 -24 36 16.34 22.4w 13JW65 F51 C~1w3u 2013 04 16.50252 15 59 33.465 -25 11 38.17 21.8G 13JW65 F51 C~2rXy 2013 05 11.41775 15 57 17.051 -25 06 12.84 21.9w 13JW65 F51 C~1w3u 2013 05 11.43162 15 57 17.005 -25 06 12.64 21.9w 13JW65 F51 C~1w3u 2013 05 11.44546 15 57 16.927 -25 06 12.62 22.0w 13JW65 F51 C~1w3u 2013 06 01.36533 15 55 09.012 -24 59 46.12 22.4w 13JW65 F51 C~1w3u 2013 06 01.38014 15 55 08.911 -24 59 45.95 22.4w 13JW65 F51 C~1w3u 2013 06 01.39494 15 55 08.832 -24 59 45.49 22.4w 13JW65 F51 C~1w3u 2013 06 14.34152 15 53 53.518 -24 55 22.40 22.4G 13JW65 F51 C~2rXy 2013 06 27.33623 15 52 46.792 -24 50 59.16 22.3G 13JW65 F51 C~2rXy 2013 06 30.33229 15 52 33.063 -24 50 00.33 22.0w 13JW65 F51 C~1w3u 2013 06 30.34614 15 52 33.010 -24 50 00.07 22.2w 13JW65 F51 C~1w3u 2013 06 30.36005 15 52 32.953 -24 49 59.68 22.2w 13JW65 F51 C~1w3u 2014 04 04.59448 16 09 28.394 -25 28 44.95 21.9w 13JW65 F51 C~1w3u 2014 04 04.61654 16 09 28.368 -25 28 44.54 21.8w 13JW65 F51 C~1w3u 2014 06 04.36409 16 04 02.088 -25 16 02.44 21.8G 13JW65 F51 C~2rXy 2014 07 31.29558 16 00 01.380 -24 59 22.83 21.0G 13JW65 F51 C~2rXy 2015 02 08.64778 16 18 16.634 -25 36 12.48 22.3G 13JW65 F51 C~2rXy 2015 07 13.32685 16 09 49.030 -25 19 33.53 23.4G 13JW65 F51 C~2rXy 2015 07 14.29171 16 09 45.456 -25 19 17.42 22.8G 13JW65 F51 C~2rXy 2015 07 14.30238 16 09 45.422 -25 19 17.14 22.8G 13JW65 F51 C~2rXy 2015 07 14.32356 16 09 45.334 -25 19 16.91 22.9G 13JW65 F51 C~2rXy
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 0.04 0.00 0.08
2 0.0000 -1.42 -0.21 -0.14 -0.11
3 0.0001 -2.30 0.07 -0.03 -0.06
4 0.0001 -3.38 0.15 0.14 0.06
5 0.9310 9830.23 -0.30 383.67 0.26
6 1.0156 7229.99 0.03 460.66 0.15
7 1.0157 7229.32 ( 0.48) 460.64 ( 0.08)
8 1.0157 7228.28 ( 0.55) 460.53 ( -0.09)
9 1.0157 7226.60 -0.01 460.89 0.21
10 1.8593 19464.95 -0.23 859.11 -0.00
11 1.9275 17569.62 -0.34 817.05 -0.11
12 1.9276 17568.97 0.19 817.12 -0.03
13 1.9276 17567.92 0.32 816.93 -0.22
14 1.9849 15775.88 0.01 850.10 0.02
15 1.9849 15774.49 -0.10 849.99 -0.13
16 1.9850 15773.34 0.02 850.23 0.07
17 2.0204 14711.35 -0.07 901.17 -0.04
18 2.0560 13764.30 0.36 973.71 -0.00
19 2.0642 13568.47 -0.06 992.95 -0.14
20 2.0642 13567.70 0.08 993.06 -0.12
21 2.0643 13566.86 0.14 993.28 0.01
22 2.8260 27689.12 0.14 1336.05 -0.37
23 2.8261 27688.69 ( 0.77) 1336.39 ( 0.07)
24 2.9924 23133.28 0.03 1290.24 0.14
25 3.1483 19697.99 -0.17 1657.32 -0.09
26 3.6749 34978.92 0.07 2097.43 0.22
27 4.0984 27871.95 0.12 1933.23 -0.20
28 4.1010 27820.51 -0.10 1940.69 0.10
29 4.1011 27820.00 -0.04 1940.89 0.22
30 4.1011 27818.76 -0.13 1940.91 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.
13JW65 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.316 47.335 47.298 ecceobj 0.318 0.318 0.318 incobj 5.699 5.699 5.699 qmin 31.560 31.550 31.474 qmax 64.806 64.807 64.944 amean 47.797 47.797 47.797 amin 47.277 47.259 47.261 amax 48.463 48.456 48.492 emean 0.320 0.320 0.320 emin 0.303 0.302 0.300 emax 0.338 0.338 0.341 imean 8.154 8.150 8.167 imin 7.066 7.043 6.858 imax 9.197 9.213 9.446 excite_mean 0.350 0.350 0.350 fracstop 1.000 1.000 1.000 cjmean 2.993 2.993 2.993 libcent 0 288.3 288.0 286.9 libamp 0 22.1 22.2 25.8 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 174.2 173.1 167.2 kozaiamp 180.0 179.9 180.0