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: 15RM278
# Created Sun Dec 22 02:10:28 2024
# Orbit generated from Bernstein formalism
# Fitting 32 observations of 32
# Arc: 2.44y
# First observation: 2015/07/14
# Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000031 0.027208 -0.000000 -0.011091 0.026705 0.000000
# Chi-squared of fit: 5.49 DOF: 58 RMS: 0.07
# Min/Max residuals: -0.18 0.21
# Exact a, adot, b, bdot, g, gdot:
1.592831E-05 2.668387E-02 -6.064580E-06 -1.087545E-02 2.629309E-02 -1.667628E-03
# Covariance matrix:
1.8211E-13 -1.8086E-14 3.8726E-15 -2.0223E-14 1.3075E-13 9.2547E-13
-1.8086E-14 3.4580E-13 4.4059E-14 -1.8156E-13 2.0231E-13 8.0682E-12
3.8726E-15 4.4059E-14 1.0466E-13 -1.0311E-13 2.9178E-14 1.4639E-12
-2.0223E-14 -1.8156E-13 -1.0311E-13 2.2898E-13 -1.2531E-13 -5.9902E-12
1.3075E-13 2.0231E-13 2.9178E-14 -1.2531E-13 2.6834E-13 5.6004E-12
9.2547E-13 8.0682E-12 1.4639E-12 -5.9902E-12 5.6004E-12 2.6593E-10
# lat0 lon0 xBary yBary zBary JD0
1.098919 12.213992 1.003396 0.003348 -0.169217 2457218.068079
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 337.86584 +/- 0.117
Argument of Peri: 209.09369 +/- 0.181
Long of Asc Node: 193.38474 +/- 0.000
Inclination: 22.25038 +/- 0.001
Eccentricity: 0.18208174 +/- 0.0003
Semi-Major Axis: 45.62595976 +/- 0.0058
Time of Perihelion: 2464131.6284 +/- 36.6
Perihelion: 37.31830559 +/- 0.0154
Aphelion: 53.93361392 +/- 0.0162
Period (y) 308.1954 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 37.53919012 +/- 0.0007
Ecliptic Y 7.10030728 +/- 0.0001
Ecliptic Z 0.72923587 +/- 0.0000
Ecliptic XDOT -0.00073858 +/- 0.0000
Ecliptic YDOT 0.00267723 +/- 0.0000
Ecliptic ZDOT -0.00113550 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.21173829 +/- 0.0007
Geocenter to KBO 38.03281095 +/- 0.0007
# Hcoef: 8.43
The following table shows the complete astrometric record for 15RM278. 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 (15RM278) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.56729 00 43 12.452 +05 50 20.85 24.4r 15RM278 568 C~2lVQ 2015 07 19.54532 00 43 11.812 +05 49 52.97 24.3r 15RM278 568 C~2lVQ 2015 08 11.50751 00 42 39.772 +05 44 34.82 24.5r 15RM278 568 C~2lVQ 2015 08 11.54916 00 42 39.674 +05 44 33.77 24.3r 15RM278 568 C~2lVQ 2015 09 08.41317 00 41 06.280 +05 32 04.93 23.9r 15RM278 568 C~2lVQ 2015 09 08.51862 00 41 05.843 +05 32 01.56 24.1r 15RM278 568 C~2lVQ 2015 09 08.56094 00 41 05.664 +05 32 00.09 24.1r 15RM278 568 C~2lVQ 2015 09 09.53652 00 41 01.572 +05 31 28.20 24.4w 15RM278 568 C~2lVQ 2015 09 10.47732 00 40 57.591 +05 30 57.17 24.4w 15RM278 568 C~2lVQ 2015 09 16.46890 00 40 31.411 +05 27 33.93 24.4w 15RM278 568 C~2lVQ 2015 10 03.39699 00 39 12.550 +05 17 21.64 24.5w 15RM278 568 C~2lVQ 2015 10 07.36274 00 38 53.657 +05 14 54.13 24.1r 15RM278 568 C~2lVQ 2015 10 07.41585 00 38 53.405 +05 14 52.23 24.5r 15RM278 568 C~2lVQ 2015 11 07.26021 00 36 38.435 +04 56 44.68 24.5w 15RM278 568 C~2lVQ 2015 11 07.31307 00 36 38.230 +04 56 43.00 24.4w 15RM278 568 C~2lVQ 2015 11 10.39917 00 36 27.036 +04 55 07.89 24.7w 15RM278 568 C~2lVQ 2015 12 07.33665 00 35 19.700 +04 44 22.07 24.4w 15RM278 568 C~2lVQ 2016 01 01.26556 00 35 16.708 +04 40 40.10 24.1w 15RM278 568 C~2lVQ 2016 09 05.54080 00 48 00.679 +05 34 31.10 24.3w 15RM278 568 C~2lVQ 2016 09 05.59118 00 48 00.474 +05 34 29.44 24.4w 15RM278 568 C~2lVQ 2016 09 06.54027 00 47 56.668 +05 33 59.19 23.7w 15RM278 568 C~2lVQ 2016 09 06.58238 00 47 56.496 +05 33 57.86 24.8w 15RM278 568 C~2lVQ 2016 09 07.48017 00 47 52.853 +05 33 29.16 24.3w 15RM278 568 C~2lVQ 2016 09 07.52648 00 47 52.658 +05 33 27.59 24.5w 15RM278 568 C~2lVQ 2016 09 27.49689 00 46 23.605 +05 21 52.78 24.3w 15RM278 568 C~2lVQ 2016 11 02.39575 00 43 38.889 +05 00 20.82 24.0r 15RM278 568 C~2lVQ 2016 11 02.46170 00 43 38.628 +05 00 18.71 24.8r 15RM278 568 C~2lVQ 2016 11 04.30057 00 43 31.258 +04 59 18.81 24.4w 15RM278 568 C~2lVQ 2016 11 04.35961 00 43 31.017 +04 59 16.96 24.4w 15RM278 568 C~2lVQ 2017 09 15.43553 00 54 08.082 +05 30 14.23 24.6w 15RM278 568 C~2lVQ 2017 09 22.50070 00 53 36.388 +05 26 06.22 24.4w 15RM278 568 C~2lVQ 2017 12 23.29251 00 48 26.477 +04 43 41.07 24.6w 15RM278 568 C~2lVQ
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 0.02 0.00 -0.10
2 0.0136 -19.69 0.11 -21.93 0.01
3 0.0765 -584.16 -0.07 -127.85 0.19
4 0.0766 -585.92 -0.08 -128.24 -0.03
5 0.1529 -2161.99 -0.05 -271.80 0.09
6 0.1532 -2169.31 0.13 -272.35 0.07
7 0.1533 -2172.35 0.11 -272.66 -0.03
8 0.1560 -2241.06 0.02 -278.07 -0.03
9 0.1585 -2307.91 -0.05 -283.34 -0.04
10 0.1750 -2747.25 -0.03 -317.20 0.00
11 0.2213 -4071.11 0.09 -418.69 -0.03
12 0.2322 -4388.69 -0.18 -443.64 -0.03
13 0.2323 -4392.90 -0.07 -443.91 0.00
14 0.3167 -6676.25 0.05 -651.91 -0.04
15 0.3169 -6679.73 -0.01 -652.25 -0.04
16 0.3253 -6871.15 0.04 -673.92 0.21
17 0.3991 -8052.12 -0.05 -871.77 -0.04
18 0.4673 -8180.84 0.09 -1058.36 0.02
19 1.1471 3591.92 -0.00 -2552.05 0.01
20 1.1472 3588.46 -0.02 -2552.39 -0.05
21 1.1498 3524.32 -0.04 -2558.16 -0.12
22 1.1499 3521.44 -0.01 -2558.38 -0.11
23 1.1524 3460.15 -0.01 -2563.67 0.04
24 1.1525 3456.85 -0.06 -2563.98 -0.02
25 1.2072 1961.17 0.05 -2686.31 -0.02
26 1.3055 -808.82 -0.04 -2916.02 0.02
27 1.3057 -813.23 0.14 -2916.44 0.00
28 1.3107 -938.03 -0.04 -2928.56 -0.04
29 1.3109 -942.07 -0.05 -2928.86 0.02
30 2.1735 8554.72 0.16 -4918.57 0.02
31 2.1928 8021.40 -0.07 -4964.16 -0.01
32 2.4441 2761.00 -0.04 -5513.31 0.11
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.
15RM278 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 46.118 46.129 46.107 ecceobj 0.189 0.190 0.189 incobj 22.152 22.152 22.152 qmin 36.434 36.373 36.637 qmax 55.579 55.578 55.384 amean 45.783 45.782 45.783 amin 45.383 45.374 45.385 amax 46.243 46.242 46.250 emean 0.189 0.188 0.186 emin 0.175 0.174 0.174 emax 0.203 0.202 0.197 imean 22.213 22.222 22.279 imin 21.850 21.748 21.976 imax 22.603 22.621 22.619 excite_mean 0.423 0.422 0.422 fracstop 1.000 1.000 1.000 cjmean 2.900 2.900 2.900 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 190.5 181.8 195.2 kozaiamp 180.0 179.9 179.9