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: 15DV248 # Created Sun Dec 22 02:10:17 2024 # Orbit generated from Bernstein formalism # Fitting 34 observations of 36 # Arc: 2.04y # First observation: 2015/02/17 # Last observation: 2017/03/04 Preliminary a, adot, b, bdot, g, gdot: -0.000031 0.026120 0.000005 -0.007793 0.025455 0.000000 # Chi-squared of fit: 23.90 DOF: 62 RMS: 0.15 # Min/Max residuals: -0.45 0.37 # Exact a, adot, b, bdot, g, gdot: 1.736567E-05 2.622455E-02 -4.176722E-06 -7.835752E-03 2.588334E-02 1.977613E-03 # Covariance matrix: 1.2863E-13 3.3630E-13 -2.3383E-16 -1.1629E-13 3.0340E-13 7.6857E-12 3.3630E-13 6.9294E-12 5.9707E-15 -2.0040E-12 4.4050E-12 1.3281E-10 -2.3383E-16 5.9707E-15 1.0055E-13 -5.3449E-14 -1.2087E-15 9.7640E-14 -1.1629E-13 -2.0040E-12 -5.3449E-14 6.3270E-13 -1.3111E-12 -3.8774E-11 3.0340E-13 4.4050E-12 -1.2087E-15 -1.3111E-12 3.3031E-12 8.6703E-11 7.6857E-12 1.3281E-10 9.7640E-14 -3.8774E-11 8.6703E-11 2.5691E-09 # lat0 lon0 xBary yBary zBary JD0 -11.628742 144.357887 -0.059908 -0.198033 -0.963238 2457070.626718 # Heliocentric elements and errors Epoch: 2457070.5000 = 2015/02/17 Mean Anomaly: 24.18511 +/- 0.459 Argument of Peri: 182.40631 +/- 0.666 Long of Asc Node: 291.03946 +/- 0.001 Inclination: 20.01485 +/- 0.001 Eccentricity: 0.15042853 +/- 0.0011 Semi-Major Axis: 45.64946364 +/- 0.0142 Time of Perihelion: 2449502.2133 +/- 143.6 Perihelion: 38.78248210 +/- 0.0527 Aphelion: 52.51644518 +/- 0.0539 Period (y) 308.4336 +/- 0.14 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -31.59052029 +/- 0.0022 Ecliptic Y 22.57562299 +/- 0.0016 Ecliptic Z -7.78781332 +/- 0.0005 Ecliptic XDOT -0.00165083 +/- 0.0000 Ecliptic YDOT -0.00223783 +/- 0.0000 Ecliptic ZDOT -0.00085390 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.60138586 +/- 0.0019 Geocenter to KBO 38.63488306 +/- 0.0027 # Hcoef: 7.52
The following table shows the complete astrometric record for 15DV248. 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 (15DV248) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.12594 09 31 15.83 +02 24 46.1 23.7g 15DV248 W84 C~2iOV 2015 02 17.21138 09 31 15.41 +02 24 48.1 23.9g 15DV248 W84 C~2iOV 2015 02 17.28002 09 31 15.08 +02 24 49.1 24.0g 15DV248 W84 C~2iOV 2015 02 18.05474 09 31 11.21 +02 25 06.7 24.0g 15DV248 W84 C~2iOV 2015 02 18.19020 09 31 10.55 +02 25 09.7 24.1g 15DV248 W84 C~2iOV 2015 02 18.26016 09 31 10.17 +02 25 11.0 23.9g 15DV248 W84 C~2iOV 2015 02 18.32908 09 31 09.81 +02 25 13.0 23.9g 15DV248 W84 C~2iOV 2015 02 19.05150 09 31 06.28 +02 25 29.3 24.1g 15DV248 W84 C~2iOV 2015 02 19.18835 09 31 05.57 +02 25 32.3 23.9g 15DV248 W84 C~2iOV 2015 02 19.25710 09 31 05.21 +02 25 33.3 23.8g 15DV248 W84 C~2iOV 2015 02 19.32607 09 31 04.88 +02 25 35.0 24.0g 15DV248 W84 C~2iOV 2015 02 22.11164 09 30 51.13 +02 26 39.3 15DV248 W84 C~2iOV 2015 02 22.17932 09 30 50.77 +02 26 39.9 15DV248 W84 C~2iOV 2015 02 24.09638 09 30 41.44 +02 27 25.2 15DV248 W84 C~2iOV 2015 02 24.15732 09 30 41.13 +02 27 26.5 15DV248 W84 C~2iOV 2015 04 11.093507 09 27 52.26 +02 46 07.3 23.6g 15DV248 W84 C~4ZGo 2015 04 11.094884 09 27 52.26 +02 46 07.5 23.1r 15DV248 W84 C~4ZGo 2016 12 25.46657 09 45 18.17 +00 27 09.0 23.6r 15DV248 T09 C~7myj 2016 12 25.48541 09 45 18.11 +00 27 09.0 23.6r 15DV248 T09 C~7myj 2016 12 25.49589 09 45 18.09 +00 27 08.8 24.0r 15DV248 T09 C~7myj 2016 12 25.50217 09 45 18.06 +00 27 08.8 24.1r 15DV248 T09 C~7myj 2017 01 21.37737 09 43 35.43 +00 28 17.5 23.3z 15DV248 T09 C~7myj 2017 01 21.56723 09 43 34.55 +00 28 19.6 23.0z 15DV248 T09 C~7myj 2017 01 21.62447 09 43 34.28 +00 28 20.1 23.1z 15DV248 T09 C~7myj 2017 01 21.63253 09 43 34.24 +00 28 20.1 23.0z 15DV248 T09 C~7myj 2017 01 21.64327 09 43 34.18 +00 28 20.2 23.2z 15DV248 T09 C~7myj 2017 01 28.39557 09 43 02.53 +00 29 43.5 23.9g 15DV248 T09 C~7myj 2017 01 28.43325 09 43 02.34 +00 29 44.0 24.0g 15DV248 T09 C~7myj 2017 01 28.44234 09 43 02.30 +00 29 44.1 24.2g 15DV248 T09 C~7myj 2017 01 28.46131 09 43 02.22 +00 29 44.3 24.1g 15DV248 T09 C~7myj 2017 01 28.47880 09 43 02.12 +00 29 44.8 24.1g 15DV248 T09 C~7myj 2017 03 04.38044 09 40 11.11 +00 41 56.0 23.3i 15DV248 T09 C~7myj 2017 03 04.39116 09 40 11.06 +00 41 56.3 23.1i 15DV248 T09 C~7myj 2017 03 04.41351 09 40 10.95 +00 41 57.0 23.0i 15DV248 T09 C~7myj 2017 03 04.42156 09 40 10.92 +00 41 57.2 23.0i 15DV248 T09 C~7myj 2017 03 04.42430 09 40 10.89 +00 41 57.2 23.1i 15DV248 T09 C~7myj
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 -0.28 0.00 -0.13
2 0.0002 -6.60 -0.12 -0.14 0.06
3 0.0004 -11.61 0.31 -0.80 -0.33
4 0.0025 -72.18 -0.11 -2.91 0.04
5 0.0029 -82.51 0.26 -3.27 0.16
6 0.0031 -88.32 -0.02 -3.88 -0.21
7 0.0033 -94.07 -0.34 -3.74 0.18
8 0.0053 -149.40 ( 0.26) -5.43 ( 0.54)
9 0.0056 -160.44 0.01 -6.03 0.37
10 0.0058 -165.87 0.00 -6.83 -0.21
11 0.0060 -171.10 0.19 -6.82 0.01
12 0.0137 -386.88 ( -0.10) -12.64 ( 0.58)
13 0.0138 -392.18 -0.10 -13.82 -0.45
14 0.0191 -539.14 0.13 -16.18 0.10
15 0.0193 -543.96 0.05 -16.45 -0.07
16 0.1450 -3301.09 0.01 226.42 0.17
17 0.1450 -3301.15 -0.00 226.61 0.34
18 1.8545 14260.30 0.03 -2581.75 -0.06
19 1.8545 14259.44 -0.06 -2582.04 0.02
20 1.8545 14259.22 0.14 -2582.33 -0.05
21 1.8546 14258.80 -0.03 -2582.47 -0.07
22 1.9281 12774.30 0.04 -3018.03 0.08
23 1.9287 12761.08 0.03 -3020.33 0.20
24 1.9288 12757.08 -0.00 -3021.18 0.08
25 1.9288 12756.51 -0.01 -3021.37 -0.01
26 1.9289 12755.62 -0.16 -3021.57 -0.07
27 1.9474 12277.80 -0.01 -3096.92 0.03
28 1.9475 12274.93 -0.09 -3097.37 -0.03
29 1.9475 12274.33 -0.01 -3097.47 -0.04
30 1.9475 12273.12 0.19 -3097.67 -0.04
31 1.9476 12271.54 -0.10 -3097.69 0.13
32 2.0431 9600.30 0.08 -3238.03 -0.10
33 2.0432 9599.49 0.07 -3237.99 -0.07
34 2.0432 9597.70 -0.03 -3237.86 0.02
35 2.0432 9597.21 0.08 -3237.82 0.05
36 2.0433 9596.78 -0.14 -3237.96 -0.10
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.
15DV248 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.409 45.465 45.355 ecceobj 0.147 0.151 0.144 incobj 20.031 20.032 20.030 qmin 37.767 37.622 37.863 qmax 53.359 53.702 53.169 amean 45.378 45.440 45.319 amin 45.012 45.069 44.943 amax 45.796 45.866 45.747 emean 0.151 0.155 0.147 emin 0.138 0.140 0.134 emax 0.166 0.171 0.163 imean 21.537 21.519 21.534 imin 21.120 21.083 21.127 imax 21.907 21.916 21.890 excite_mean 0.397 0.398 0.396 fracstop 1.000 1.000 1.000 cjmean 2.920 2.920 2.921 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 181.7 182.6 181.8 kozaiamp 180.0 179.9 180.0