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: 15RT278
# Created Wed Apr 24 01:17:23 2024
# Orbit generated from Bernstein formalism
# Fitting 31 observations of 31
# Arc: 2.36y
# First observation: 2015/07/14
# Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000105 0.029846 0.000022 -0.009550 0.027646 0.000000
# Chi-squared of fit: 7.60 DOF: 56 RMS: 0.09
# Min/Max residuals: -0.23 0.21
# Exact a, adot, b, bdot, g, gdot:
1.683043E-05 2.927247E-02 -5.038201E-06 -9.365112E-03 2.729489E-02 -1.251231E-03
# Covariance matrix:
1.4416E-13 -3.3649E-14 -1.6430E-16 -9.1782E-15 8.5971E-14 5.2455E-13
-3.3649E-14 4.5704E-13 3.2476E-14 -1.6302E-13 3.0963E-13 9.0543E-12
-1.6430E-16 3.2476E-14 1.1495E-13 -9.5399E-14 2.0426E-14 9.0825E-13
-9.1782E-15 -1.6302E-13 -9.5399E-14 1.7341E-13 -1.1993E-13 -4.3337E-12
8.5971E-14 3.0963E-13 2.0426E-14 -1.1993E-13 3.4703E-13 6.6870E-12
5.2455E-13 9.0543E-12 9.0825E-13 -4.3337E-12 6.6870E-12 2.4037E-10
# lat0 lon0 xBary yBary zBary JD0
3.232533 12.342426 1.003799 0.009509 -0.166579 2457218.059119
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 343.50619 +/- 0.106
Argument of Peri: 194.05338 +/- 0.164
Long of Asc Node: 200.74713 +/- 0.000
Inclination: 17.98796 +/- 0.001
Eccentricity: 0.19214810 +/- 0.0002
Semi-Major Axis: 44.90734472 +/- 0.0050
Time of Perihelion: 2462246.5833 +/- 32.5
Perihelion: 36.27848387 +/- 0.0110
Aphelion: 53.53620557 +/- 0.0119
Period (y) 300.9430 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 36.10715552 +/- 0.0008
Ecliptic Y 6.87420145 +/- 0.0002
Ecliptic Z 2.06576432 +/- 0.0000
Ecliptic XDOT -0.00070058 +/- 0.0000
Ecliptic YDOT 0.00284661 +/- 0.0000
Ecliptic ZDOT -0.00094490 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.81370271 +/- 0.0008
Geocenter to KBO 36.63689133 +/- 0.0008
# Hcoef: 8.58
The following table shows the complete astrometric record for 15RT278. 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 (15RT278) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.55833 00 40 19.079 +07 51 09.65 24.2r 15RT278 568 C~2lVR 2015 07 19.53712 00 40 18.155 +07 51 03.72 24.2r 15RT278 568 C~2lVR 2015 08 13.50040 00 39 38.523 +07 46 38.88 23.7r 15RT278 568 C~2lVR 2015 08 19.56300 00 39 20.844 +07 44 38.01 24.0r 15RT278 568 C~2lVR 2015 08 20.43842 00 39 18.059 +07 44 18.92 23.8r 15RT278 568 C~2lVR 2015 08 20.48764 00 39 17.888 +07 44 17.96 24.3r 15RT278 568 C~2lVR 2015 09 07.58494 00 38 09.102 +07 36 18.00 24.8w 15RT278 568 C~2lVR 2015 09 09.41265 00 38 01.168 +07 35 21.53 24.2r 15RT278 568 C~2lVR 2015 09 09.45371 00 38 00.984 +07 35 20.25 24.4r 15RT278 568 C~2lVR 2015 09 09.49464 00 38 00.798 +07 35 18.97 24.6r 15RT278 568 C~2lVR 2015 09 10.51893 00 37 56.262 +07 34 46.59 24.5w 15RT278 568 C~2lVR 2015 09 18.48318 00 37 19.673 +07 30 23.48 24.7w 15RT278 568 C~2lVR 2015 11 10.46703 00 33 16.533 +06 58 25.92 24.3w 15RT278 568 C~2lVR 2015 12 08.26533 00 32 08.167 +06 46 22.29 24.3w 15RT278 568 C~2lVR 2016 07 07.58323 00 47 20.336 +08 00 28.34 24.8w 15RT278 568 C~2lVR 2016 07 08.56262 00 47 21.137 +08 00 32.45 24.5w 15RT278 568 C~2lVR 2016 09 05.48236 00 45 27.845 +07 46 52.06 15RT278 568 C~2lVR 2016 09 05.57499 00 45 27.449 +07 46 49.26 15RT278 568 C~2lVR 2016 09 06.43656 00 45 23.846 +07 46 23.55 15RT278 568 C~2lVR 2016 09 06.47701 00 45 23.679 +07 46 22.32 15RT278 568 C~2lVR 2016 09 06.52410 00 45 23.496 +07 46 20.85 15RT278 568 C~2lVR 2016 09 06.56619 00 45 23.287 +07 46 19.71 15RT278 568 C~2lVR 2016 09 26.43941 00 43 51.670 +07 35 15.41 24.2w 15RT278 568 C~2lVR 2016 09 27.47990 00 43 46.575 +07 34 37.87 24.4w 15RT278 568 C~2lVR 2016 11 04.28877 00 40 48.528 +07 11 31.63 15RT278 568 C~2lVR 2016 11 04.34801 00 40 48.265 +07 11 29.48 15RT278 568 C~2lVR 2016 12 29.29357 00 39 08.159 +06 52 01.81 24.7w 15RT278 568 C~2lVR 2017 01 02.32887 00 39 12.492 +06 51 47.79 24.3w 15RT278 568 C~2lVR 2017 09 16.52330 00 51 55.696 +07 50 41.35 24.3w 15RT278 568 C~2lVR 2017 09 22.47675 00 51 27.808 +07 47 18.60 24.2w 15RT278 568 C~2lVR 2017 11 22.34591 00 46 57.833 +07 12 01.27 25.0w 15RT278 568 C~2lVR
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 0.03 0.00 -0.08
2 0.0136 -14.96 0.06 -0.07 -0.02
3 0.0820 -660.60 -0.08 -12.52 0.16
4 0.0986 -949.72 0.10 -20.50 -0.21
5 0.1010 -995.29 -0.04 -21.79 -0.13
6 0.1011 -998.00 -0.11 -21.68 0.03
7 0.1507 -2126.98 0.02 -61.00 0.03
8 0.1557 -2257.66 0.12 -66.50 0.04
9 0.1558 -2260.68 0.13 -66.60 0.04
10 0.1559 -2263.73 0.10 -66.69 0.05
11 0.1587 -2338.48 -0.02 -69.92 -0.02
12 0.1805 -2942.31 -0.12 -97.57 0.10
13 0.3256 -7026.03 -0.23 -430.71 0.11
14 0.4017 -8249.22 0.09 -692.02 -0.01
15 0.9830 5981.91 0.01 -1929.03 0.01
16 0.9856 5994.48 -0.06 -1929.87 -0.01
17 1.1470 4123.45 -0.05 -2030.85 0.00
18 1.1472 4116.94 -0.08 -2031.14 -0.03
19 1.1496 4057.58 -0.14 -2033.96 0.04
20 1.1497 4054.81 -0.04 -2034.12 -0.02
21 1.1498 4051.73 0.21 -2034.42 -0.18
22 1.1499 4048.43 -0.11 -2034.26 0.10
23 1.2043 2534.81 -0.03 -2114.83 -0.01
24 1.2072 2450.40 0.10 -2119.81 0.01
25 1.3107 -529.66 0.16 -2359.40 -0.01
26 1.3109 -534.11 -0.12 -2359.84 -0.03
27 1.4613 -2363.36 0.02 -2849.16 -0.01
28 1.4723 -2309.52 0.02 -2887.40 0.00
29 2.1765 9532.71 0.06 -4056.94 -0.02
30 2.1928 9071.12 0.01 -4083.83 -0.01
31 2.3594 4543.40 -0.02 -4478.86 0.08
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.
15RT278 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.408 45.418 45.399 ecceobj 0.200 0.200 0.200 incobj 17.915 17.915 17.915 qmin 35.948 35.950 35.869 qmax 54.501 54.520 54.831 amean 45.103 45.103 45.103 amin 44.723 44.730 44.716 amax 45.541 45.539 45.550 emean 0.174 0.172 0.175 emin 0.142 0.140 0.146 emax 0.200 0.200 0.204 imean 19.000 19.057 18.970 imin 18.059 18.058 17.978 imax 19.767 19.779 19.756 excite_mean 0.369 0.369 0.369 fracstop 1.000 1.000 1.000 cjmean 2.947 2.947 2.947 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 185.8 186.2 187.0 kozaiamp 180.0 180.0 180.0