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: 15RP278
# Created Sun Dec 22 02:10:28 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 48 observations of 48
# Arc: 9.22y
# First observation: 2015/07/14
# Last observation: 2024/10/01
# Chi-squared of fit: 21.60 DOF: 90 RMS: 0.12
# Min/Max residuals: -0.27 0.48
# Exact a, adot, b, bdot, g, gdot:
1.730248E-05 3.106155E-02 2.237679E-06 3.785306E-03 2.780032E-02 -5.283771E-04
# Covariance matrix:
1.0183E-13 -9.4987E-15 -5.8629E-16 -7.9476E-16 7.0420E-14 -1.4824E-14
-9.4987E-15 1.6387E-13 -1.0699E-14 2.1072E-14 8.8233E-14 5.6941E-13
-5.8629E-16 -1.0699E-14 3.8793E-14 -8.1467E-15 -6.8462E-15 -3.8482E-14
-7.9476E-16 2.1072E-14 -8.1467E-15 8.6165E-15 1.1283E-14 7.5943E-14
7.0420E-14 8.8233E-14 -6.8462E-15 1.1283E-14 1.3054E-13 3.1239E-13
-1.4824E-14 5.6941E-13 -3.8482E-14 7.5943E-14 3.1239E-13 2.0516E-12
# lat0 lon0 xBary yBary zBary JD0
1.636874 9.402607 0.994015 0.006317 -0.217609 2457218.034449
# Heliocentric elements and errors
Epoch: 2457218.5000 = 2015/07/15
Mean Anomaly: 346.75385 +/- 0.013
Argument of Peri: 31.69580 +/- 0.018
Long of Asc Node: 354.83774 +/- 0.000
Inclination: 7.19985 +/- 0.000
Eccentricity: 0.16394051 +/- 0.0000
Semi-Major Axis: 42.97801290 +/- 0.0023
Time of Perihelion: 2461005.1499 +/- 8.8
Perihelion: 35.93217559 +/- 0.0025
Aphelion: 50.02385020 +/- 0.0031
Period (y) 281.7589 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 35.84665884 +/- 0.0005
Ecliptic Y 4.92942055 +/- 0.0001
Ecliptic Z 1.02763996 +/- 0.0000
Ecliptic XDOT -0.00056386 +/- 0.0000
Ecliptic YDOT 0.00300141 +/- 0.0000
Ecliptic ZDOT 0.00037121 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.19862242 +/- 0.0005
Geocenter to KBO 35.97084380 +/- 0.0005
# Hcoef: 8.52
The following table shows the complete astrometric record for 15RP278. 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 (15RP278) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.53366 00 31 58.224 +05 13 50.59 24.2r 15RP278 568 C~2lVR 2015 07 19.49854 00 31 55.394 +05 13 58.67 24.2r 15RP278 568 C~2lVR 2015 08 11.49021 00 31 12.128 +05 11 17.27 24.2r 15RP278 568 C~2lVR 2015 08 11.53270 00 31 12.031 +05 11 16.47 24.4r 15RP278 568 C~2lVR 2015 08 11.55462 00 31 11.934 +05 11 16.42 24.4r 15RP278 568 C~2lVR 2015 08 13.47989 00 31 06.252 +05 10 48.87 24.3r 15RP278 568 C~2lVR 2015 08 13.51278 00 31 06.135 +05 10 48.45 24.3r 15RP278 568 C~2lVR 2015 08 13.53335 00 31 06.045 +05 10 48.06 24.5r 15RP278 568 C~2lVR 2015 08 19.54254 00 30 46.309 +05 09 09.02 24.2r 15RP278 568 C~2lVR 2015 08 19.58390 00 30 46.156 +05 09 08.38 24.1r 15RP278 568 C~2lVR 2015 08 19.61259 00 30 46.031 +05 09 07.99 24.0r 15RP278 568 C~2lVR 2015 09 07.56274 00 29 28.147 +05 02 05.94 24.2w 15RP278 568 C~2lVR 2015 09 08.50096 00 29 23.796 +05 01 41.37 15RP278 568 C~2lVR 2015 09 08.54456 00 29 23.584 +05 01 40.33 15RP278 568 C~2lVR 2015 09 09.39169 00 29 19.637 +05 01 17.79 24.2r 15RP278 568 C~2lVR 2015 09 09.43322 00 29 19.442 +05 01 16.77 24.1r 15RP278 568 C~2lVR 2015 09 09.47414 00 29 19.244 +05 01 15.63 24.2r 15RP278 568 C~2lVR 2015 09 09.52009 00 29 19.020 +05 01 14.48 23.8w 15RP278 568 C~2lVR 2015 09 10.46103 00 29 14.583 +05 00 49.33 24.3w 15RP278 568 C~2lVR 2015 09 16.44783 00 28 45.567 +04 58 03.00 24.2w 15RP278 568 C~2lVR 2015 09 18.45683 00 28 35.573 +04 57 05.38 24.5w 15RP278 568 C~2lVR 2015 09 18.49367 00 28 35.391 +04 57 04.31 24.4w 15RP278 568 C~2lVR 2015 10 03.37463 00 27 19.470 +04 49 36.19 24.1w 15RP278 568 C~2lVR 2015 10 07.34146 00 26 59.120 +04 47 33.96 24.1r 15RP278 568 C~2lVR 2015 10 07.35040 00 26 59.068 +04 47 33.61 24.3r 15RP278 568 C~2lVR 2015 10 07.39952 00 26 58.815 +04 47 32.22 23.9r 15RP278 568 C~2lVR 2015 11 07.23924 00 24 36.393 +04 32 51.22 24.3w 15RP278 568 C~2lVR 2015 11 07.29177 00 24 36.182 +04 32 49.92 24.2w 15RP278 568 C~2lVR 2015 11 10.36966 00 24 24.691 +04 31 36.79 24.1w 15RP278 568 C~2lVR 2015 12 07.31568 00 23 17.805 +04 24 17.76 24.2w 15RP278 568 C~2lVR 2016 01 01.24475 00 23 19.918 +04 24 09.60 24.2w 15RP278 568 C~2lVR 2016 09 05.47427 00 35 54.965 +05 57 42.33 15RP278 568 C~2lVR 2016 09 06.42847 00 35 50.659 +05 57 18.74 15RP278 568 C~2lVR 2016 09 06.46893 00 35 50.470 +05 57 17.67 15RP278 568 C~2lVR 2016 09 26.43130 00 34 12.678 +05 48 00.27 24.2w 15RP278 568 C~2lVR 2016 09 26.44752 00 34 12.591 +05 47 59.81 24.3w 15RP278 568 C~2lVR 2016 11 03.39147 00 31 07.486 +05 29 13.20 15RP278 568 C~2lVR 2016 11 03.45641 00 31 07.201 +05 29 11.64 15RP278 568 C~2lVR 2016 12 25.23477 00 29 23.787 +05 17 30.26 24.2w 15RP278 568 C~2lVR 2016 12 25.25214 00 29 23.800 +05 17 30.41 24.3w 15RP278 568 C~2lVR 2017 01 02.28151 00 29 31.765 +05 18 10.60 15RP278 568 C~2lVR 2017 01 02.29442 00 29 31.787 +05 18 10.75 24.7w 15RP278 568 C~2lVR 2017 01 29.24980 00 30 47.013 +05 25 41.60 23.7w 15RP278 568 C~2lVR 2017 01 30.22034 00 30 51.019 +05 26 06.38 24.4w 15RP278 568 C~2lVR 2017 05 30.60248 00 42 49.589 +06 46 46.88 24.1w 15RP278 568 C~2lVR 2024 10 01.381030 01 26 11.561 +12 58 18.45 23.6G 15RP278 G37 C~8HAJ 2024 10 01.424630 01 26 11.326 +12 58 17.32 15RP278 G37 C~8HAJ 2024 10 01.468810 01 26 11.122 +12 58 16.59 15RP278 G37 C~8HAJ
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 0.08 0.00 0.01
2 0.0136 0.00 -0.05 0.00 0.06
3 0.0765 0.00 -0.06 0.00 -0.05
4 0.0767 0.00 0.39 0.00 -0.27
5 0.0767 0.00 -0.08 0.00 -0.01
6 0.0820 0.00 0.48 0.00 0.01
7 0.0821 0.00 0.28 0.00 0.08
8 0.0821 0.00 -0.10 0.00 -0.01
9 0.0986 0.00 0.18 0.00 -0.12
10 0.0987 0.00 0.12 0.00 -0.02
11 0.0988 0.00 -0.20 0.00 0.11
12 0.1507 0.00 -0.02 0.00 -0.01
13 0.1532 0.00 -0.06 0.00 -0.06
14 0.1533 0.00 -0.13 0.00 0.05
15 0.1557 0.00 -0.06 0.00 -0.09
16 0.1558 0.00 -0.01 0.00 -0.01
17 0.1559 0.00 -0.03 0.00 -0.06
18 0.1560 0.00 -0.08 0.00 0.01
19 0.1586 0.00 -0.06 0.00 0.04
20 0.1750 0.00 0.03 0.00 -0.15
21 0.1805 0.00 -0.12 0.00 -0.00
22 0.1806 0.00 -0.03 0.00 -0.01
23 0.2213 0.00 0.03 0.00 -0.08
24 0.2322 0.00 -0.01 0.00 0.03
25 0.2322 0.00 -0.09 0.00 -0.05
26 0.2324 0.00 -0.05 0.00 0.08
27 0.3168 0.00 0.08 0.00 0.02
28 0.3169 0.00 0.02 0.00 -0.00
29 0.3254 0.00 -0.04 0.00 -0.06
30 0.3991 0.00 0.01 0.00 0.13
31 0.4674 0.00 0.09 0.00 0.08
32 1.1470 0.00 -0.07 0.00 0.03
33 1.1496 0.00 -0.02 0.00 0.16
34 1.1497 0.00 -0.04 0.00 0.10
35 1.2044 0.00 0.03 0.00 -0.03
36 1.2044 0.00 -0.00 0.00 -0.01
37 1.3083 0.00 -0.05 0.00 -0.02
38 1.3085 0.00 -0.19 0.00 0.14
39 1.4502 0.00 0.03 0.00 0.01
40 1.4503 0.00 0.10 0.00 0.12
41 1.4723 0.00 -0.17 0.00 0.01
42 1.4723 0.00 -0.10 0.00 0.06
43 1.5461 0.00 0.15 0.00 0.00
44 1.5488 0.00 0.25 0.00 -0.02
45 1.8784 0.00 -0.13 0.00 0.02
46 9.2179 0.00 -0.05 0.00 -0.18
47 9.2180 0.00 -0.16 0.00 -0.17
48 9.2182 0.00 0.23 0.00 0.26
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.
15RP278 quality flag:3 Type: 12:7EEEEE 12:7EEEEE 12:7EEEEE axisobj 43.453 43.452 43.453 ecceobj 0.173 0.173 0.173 incobj 7.169 7.169 7.169 qmin 35.363 35.475 35.469 qmax 51.367 51.305 51.308 amean 43.129 43.129 43.129 amin 42.698 42.717 42.706 amax 43.599 43.590 43.584 emean 0.165 0.166 0.165 emin 0.151 0.155 0.154 emax 0.179 0.177 0.177 imean 7.213 7.160 7.176 imin 5.410 5.444 5.408 imax 8.468 8.327 8.332 excite_mean 0.208 0.208 0.208 fracstop 1.000 1.000 1.000 cjmean 3.038 3.039 3.039 libcent 0 177.9 176.9 179.9 libamp 0 155.4 121.0 128.5 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 178.2 177.3 175.2 kozaiamp 179.9 180.0 180.0