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: 15RU277
# Created Fri Nov 22 02:10:26 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 37 observations of 40
# Arc: 2.50y
# First observation: 2015/06/23
# Last observation: 2017/12/23
# Chi-squared of fit: 9.21 DOF: 68 RMS: 0.09
# Min/Max residuals: -0.26 0.22
# Exact a, adot, b, bdot, g, gdot:
1.911880E-05 4.133218E-02 -5.049132E-06 -1.201235E-02 3.348812E-02 -9.260266E-04
# Covariance matrix:
1.1021E-13 6.7116E-15 -6.5702E-16 -1.9284E-15 7.9924E-14 2.3780E-14
6.7116E-15 1.8271E-13 2.6637E-14 -5.3762E-14 1.3514E-13 4.5085E-13
-6.5702E-16 2.6637E-14 4.9757E-14 -1.5879E-14 1.7223E-14 6.8262E-14
-1.9284E-15 -5.3762E-14 -1.5879E-14 2.1682E-14 -3.8300E-14 -1.3712E-13
7.9924E-14 1.3514E-13 1.7223E-14 -3.8300E-14 1.7791E-13 3.2946E-13
2.3780E-14 4.5085E-13 6.8262E-14 -1.3712E-13 3.2946E-13 1.1483E-12
# lat0 lon0 xBary yBary zBary JD0
1.900289 9.203486 1.007689 -0.004295 0.132195 2457197.020648
# Heliocentric elements and errors
Epoch: 2457196.5000 = 2015/06/23
Mean Anomaly: 350.57922 +/- 0.004
Argument of Peri: 189.20620 +/- 0.007
Long of Asc Node: 193.80562 +/- 0.000
Inclination: 16.29414 +/- 0.000
Eccentricity: 0.24717871 +/- 0.0000
Semi-Major Axis: 39.20435163 +/- 0.0022
Time of Perihelion: 2459542.8036 +/- 7.3
Perihelion: 29.51387054 +/- 0.0021
Aphelion: 48.89483272 +/- 0.0030
Period (y) 245.4763 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 29.48781957 +/- 0.0004
Ecliptic Y 3.75797382 +/- 0.0001
Ecliptic Z 0.99011896 +/- 0.0000
Ecliptic XDOT -0.00058548 +/- 0.0000
Ecliptic YDOT 0.00332252 +/- 0.0000
Ecliptic ZDOT -0.00098398 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 29.74283411 +/- 0.0004
Geocenter to KBO 29.86135623 +/- 0.0004
# Hcoef: 8.83
The following table shows the complete astrometric record for 15RU277. 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 (15RU277) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.51987 00 30 49.106 +05 23 39.61 23.7r 15RU277 568 C~2lVO 2015 07 14.61234 00 31 15.067 +05 25 18.22 23.6r 15RU277 568 C~2lVO 2015 07 19.59146 00 31 13.382 +05 24 50.47 23.7r 15RU277 568 C~2lVO 2015 08 13.47989 00 30 22.654 +05 17 48.59 23.6r 15RU277 568 C~2lVO 2015 08 13.50863 00 30 22.557 +05 17 48.12 24.1r 15RU277 568 C~2lVO 2015 08 13.51279 00 30 22.529 +05 17 47.89 24.0r 15RU277 568 C~2lVO 2015 08 13.53336 00 30 22.462 +05 17 47.38 23.1r 15RU277 568 C~2lVO 2015 08 19.54254 00 30 00.568 +05 14 59.34 23.5r 15RU277 568 C~2lVO 2015 08 19.58390 00 30 00.398 +05 14 58.40 23.5r 15RU277 568 C~2lVO 2015 08 19.61259 00 30 00.274 +05 14 57.19 23.6r 15RU277 568 C~2lVO 2015 08 20.41707 00 29 57.108 +05 14 33.07 23.6r 15RU277 568 C~2lVO 2015 08 20.46647 00 29 56.909 +05 14 31.50 23.4r 15RU277 568 C~2lVO 2015 09 07.56274 00 28 32.158 +05 03 50.58 23.7w 15RU277 568 C~2lVO 2015 09 09.39169 00 28 22.441 +05 02 37.04 23.5r 15RU277 568 C~2lVO 2015 09 09.43322 00 28 22.213 +05 02 35.36 23.5r 15RU277 568 C~2lVO 2015 09 09.47414 00 28 21.986 +05 02 33.71 23.5r 15RU277 568 C~2lVO 2015 09 10.46104 00 28 16.670 +05 01 53.41 23.8w 15RU277 568 C~2lVO 2015 09 18.44606 00 27 32.072 +04 56 15.30 23.6w 15RU277 568 C~2lVO 2015 10 08.33404 00 25 35.562 +04 41 16.91 23.7w 15RU277 568 C~2lVO 2015 10 08.38665 00 25 35.261 +04 41 14.58 23.5w 15RU277 568 C~2lVO 2015 10 09.30373 00 25 29.916 +04 40 32.62 23.5w 15RU277 568 C~2lVO 2015 11 10.42944 00 22 46.393 +04 17 59.63 23.8w 15RU277 568 C~2lVO 2015 12 08.22831 00 21 35.957 +04 05 28.30 23.8w 15RU277 568 C~2lVO 2016 01 01.29102 00 21 50.551 +04 02 37.13 23.9w 15RU277 568 C~2lVO 2016 09 06.53219 00 38 45.153 +05 22 32.22 15RU277 568 C~2lVO 2016 09 06.57428 00 38 44.933 +05 22 30.58 15RU277 568 C~2lVO 2016 09 27.48878 00 36 47.967 +05 07 38.16 23.8w 15RU277 568 C~2lVO 2016 11 03.39726 00 33 21.768 +04 40 35.78 23.8w 15RU277 568 C~2lVO 2016 11 03.46220 00 33 21.454 +04 40 33.23 23.9w 15RU277 568 C~2lVO 2016 12 29.23783 00 31 37.197 +04 20 42.29 23.9w 15RU277 568 C~2lVO 2017 01 03.20730 00 31 46.334 +04 20 54.04 23.8w 15RU277 568 C~2lVO 2017 01 03.25288 00 31 46.433 +04 20 54.24 24.1w 15RU277 568 C~2lVO 2017 01 27.23800 00 33 13.647 +04 26 32.84 23.9w 15RU277 568 C~2lVO 2017 01 28.23385 00 33 18.723 +04 26 56.43 23.9w 15RU277 568 C~2lVO 2017 01 30.24057 00 33 29.260 +04 27 46.09 23.8w 15RU277 568 C~2lVO 2017 11 22.36455 00 42 15.302 +04 47 57.34 23.7w 15RU277 568 C~2lVO 2017 12 23.29716 00 41 27.341 +04 38 44.58 23.9w 15RU277 568 C~2lVO 2024 11 01.24592 01 56 16.182 +06 50 13.03 23.3G 15RU277 G37 2024 11 01.29344 01 56 15.881 +06 50 11.26 15RU277 G37 2024 11 01.33904 01 56 15.618 +06 50 09.53 15RU277 G37
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 0.13 0.00 -0.09
2 0.0577 0.00 -0.07 0.00 0.08
3 0.0714 0.00 -0.04 0.00 0.02
4 0.1395 0.00 0.18 0.00 -0.10
5 0.1396 0.00 0.22 0.00 0.17
6 0.1396 0.00 0.02 0.00 0.05
7 0.1397 0.00 0.09 0.00 0.07
8 0.1561 0.00 0.13 0.00 -0.08
9 0.1562 0.00 0.09 0.00 0.22
10 0.1563 0.00 -0.03 0.00 -0.13
11 0.1585 0.00 -0.09 0.00 0.01
12 0.1586 0.00 -0.04 0.00 -0.06
13 0.2082 0.00 -0.04 0.00 0.01
14 0.2132 0.00 -0.11 0.00 0.00
15 0.2133 0.00 -0.12 0.00 0.00
16 0.2134 0.00 -0.16 0.00 0.01
17 0.2161 0.00 -0.04 0.00 -0.03
18 0.2380 0.00 -0.01 0.00 -0.01
19 0.2924 0.00 -0.04 0.00 -0.04
20 0.2926 0.00 0.14 0.00 0.04
21 0.2951 0.00 0.04 0.00 0.06
22 0.3831 0.00 -0.10 0.00 -0.26
23 0.4592 0.00 -0.01 0.00 0.06
24 0.5250 0.00 0.13 0.00 0.07
25 1.2074 0.00 -0.09 0.00 0.01
26 1.2075 0.00 -0.08 0.00 0.02
27 1.2648 0.00 -0.04 0.00 -0.01
28 1.3659 0.00 -0.05 0.00 -0.01
29 1.3660 0.00 -0.05 0.00 -0.01
30 1.5187 0.00 0.03 0.00 -0.03
31 1.5323 0.00 -0.06 0.00 -0.06
32 1.5325 0.00 0.02 0.00 -0.06
33 1.5981 0.00 -0.03 0.00 -0.03
34 1.6009 0.00 0.11 0.00 0.01
35 1.6064 0.00 0.18 0.00 0.09
36 2.4171 0.00 0.03 0.00 0.02
37 2.5018 0.00 0.04 0.00 0.05
38 9.3600 0.00 ( 4.34) 0.00 ( 0.01)
39 9.3601 0.00 ( 4.23) 0.00 ( 0.09)
40 9.3602 0.00 ( 4.51) 0.00 ( 0.14)
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.
15RU277 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.602 39.613 39.591 ecceobj 0.255 0.255 0.254 incobj 16.235 16.235 16.235 qmin 28.948 29.063 28.961 qmax 50.850 50.632 50.831 amean 39.456 39.455 39.456 amin 38.898 38.913 38.887 amax 40.110 40.079 40.111 emean 0.249 0.237 0.249 emin 0.233 0.203 0.232 emax 0.268 0.264 0.268 imean 16.399 17.097 16.399 imin 15.760 16.085 15.971 imax 16.980 18.199 16.879 excite_mean 0.377 0.378 0.377 fracstop 1.000 1.000 1.000 cjmean 2.890 2.889 2.890 libcent 0 179.1 182.2 180.2 libamp 0 135.7 130.7 137.0 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 197.1 268.0 201.6 kozaiamp 180.0 63.5 180.0