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: 15GG56
# Created Wed Dec 25 02:10:16 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 35 observations of 35
# Arc: 6.22y
# First observation: 2015/02/20
# Last observation: 2021/05/12
# Chi-squared of fit: 8.15 DOF: 64 RMS: 0.09
# Min/Max residuals: -0.21 0.20
# Exact a, adot, b, bdot, g, gdot:
1.569969E-05 2.411851E-02 -1.258300E-06 -1.482410E-03 2.438415E-02 2.264912E-03
# Covariance matrix:
1.9539E-13 -7.5630E-14 -2.2442E-15 5.0237E-15 1.1462E-13 -5.4729E-13
-7.5630E-14 1.9247E-13 5.7178E-15 -1.3447E-14 3.2502E-14 1.4764E-12
-2.2442E-15 5.7178E-15 5.8911E-14 -1.6266E-14 7.0187E-16 4.7659E-14
5.0237E-15 -1.3447E-14 -1.6266E-14 1.5840E-14 -1.9242E-15 -1.1197E-13
1.1462E-13 3.2502E-14 7.0187E-16 -1.9242E-15 1.4122E-13 2.1591E-13
-5.4729E-13 1.4764E-12 4.7659E-14 -1.1197E-13 2.1591E-13 1.2292E-11
# lat0 lon0 xBary yBary zBary JD0
0.428353 -157.331565 0.771034 0.004741 -0.614327 2457073.958438
# Heliocentric elements and errors
Epoch: 2457074.5000 = 2015/02/21
Mean Anomaly: 53.52999 +/- 0.025
Argument of Peri: 110.68844 +/- 0.036
Long of Asc Node: 28.47543 +/- 0.000
Inclination: 3.52251 +/- 0.000
Eccentricity: 0.09048448 +/- 0.0002
Semi-Major Axis: 43.73605933 +/- 0.0038
Time of Perihelion: 2441365.3535 +/- 7.7
Perihelion: 39.77862481 +/- 0.0075
Aphelion: 47.69349384 +/- 0.0078
Period (y) 289.2462 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.70799912 +/- 0.0006
Ecliptic Y -15.33012241 +/- 0.0002
Ecliptic Z 0.30653905 +/- 0.0000
Ecliptic XDOT 0.00080424 +/- 0.0000
Ecliptic YDOT -0.00260291 +/- 0.0000
Ecliptic ZDOT -0.00016445 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.63426109 +/- 0.0006
Geocenter to KBO 41.01020435 +/- 0.0006
# Hcoef: 7.84
The following table shows the complete astrometric record for 15GG56. 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 (15GG56) followed by the observatory code and reference code for the source of the astrometry.
2015 02 20.45766 13 24 30.609 -08 25 14.21 24.6r 15GG56 568 C~2nvR 2015 03 17.43316 13 23 07.037 -08 17 09.47 24.0r 15GG56 568 C~2nvR 2015 03 18.45231 13 23 02.903 -08 16 45.55 23.3r 15GG56 568 C~2nvR 2015 03 18.50553 13 23 02.693 -08 16 44.32 24.3r 15GG56 568 C~2nvR 2015 03 20.50715 13 22 54.428 -08 15 56.60 24.4r 15GG56 568 C~2nvR 2015 04 11.39801 13 21 17.073 -08 06 32.87 23.1r 15GG56 568 C~2nvR 2015 04 12.35069 13 21 12.692 -08 06 07.52 24.6r 15GG56 568 C~2nvR 2015 04 12.39167 13 21 12.508 -08 06 06.49 24.2r 15GG56 568 C~2nvR 2015 04 12.43732 13 21 12.287 -08 06 05.39 23.7r 15GG56 568 C~2nvR 2015 04 14.44843 13 21 03.034 -08 05 11.78 23.9r 15GG56 568 C~2nvR 2015 04 16.38638 13 20 54.136 -08 04 20.54 23.9r 15GG56 568 C~2nvR 2015 04 18.40224 13 20 44.908 -08 03 27.21 23.8r 15GG56 568 C~2nvR 2015 04 18.45015 13 20 44.664 -08 03 25.99 24.1r 15GG56 568 C~2nvR 2015 05 16.24826 13 18 47.415 -07 52 14.91 24.1r 15GG56 568 C~2nvR 2015 05 25.35722 13 18 16.259 -07 49 19.81 24.5r 15GG56 568 C~2nvR 2015 05 25.40100 13 18 16.124 -07 49 19.13 24.1r 15GG56 568 C~2nvR 2015 06 21.30955 13 17 17.416 -07 44 04.30 23.8r 15GG56 568 C~2nvR 2015 06 22.26586 13 17 16.382 -07 43 59.40 24.2r 15GG56 568 C~2nvR 2015 07 12.25999 13 17 12.743 -07 44 07.57 23.8r 15GG56 568 C~2nvR 2015 07 19.24937 13 17 19.732 -07 45 00.01 24.4r 15GG56 568 C~2nvR 2015 07 19.29173 13 17 19.788 -07 45 00.44 23.7r 15GG56 568 C~2nvR 2016 02 04.55925 13 30 03.023 -09 03 14.81 24.7w 15GG56 568 C~2nvR 2016 02 10.59675 13 29 55.044 -09 02 30.21 22.9w 15GG56 568 C~2nvR 2016 03 11.54434 13 28 32.972 -08 54 43.66 24.2w 15GG56 568 C~2nvR 2016 05 01.36049 13 24 50.336 -08 33 32.75 24.2w 15GG56 568 C~2nvR 2016 05 02.30311 13 24 46.255 -08 33 09.85 24.2w 15GG56 568 C~2nvR 2016 05 06.31289 13 24 29.323 -08 31 33.73 24.1w 15GG56 568 C~2nvR 2016 05 28.28005 13 23 09.622 -08 24 06.74 24.1w 15GG56 568 C~2nvR 2016 06 04.36154 13 22 50.046 -08 22 19.43 24.1w 15GG56 568 C~2nvR 2016 06 27.28890 13 22 12.943 -08 19 09.26 24.7w 15GG56 568 C~2nvR 2017 03 28.57437 13 32 30.821 -09 23 35.76 15GG56 568 C~2nvR 2017 03 29.43565 13 32 27.069 -09 23 14.16 24.1w 15GG56 568 C~2nvR 2021 05 12.215990 13 49 34.030 -11 23 02.86 24.1G 15GG56 G37 C~4pVn 2021 05 12.267530 13 49 33.822 -11 23 01.58 15GG56 G37 C~4pVn 2021 05 12.315400 13 49 33.609 -11 23 00.37 15GG56 G37 C~4pVn
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 0.01 0.00 0.06
2 0.0684 0.00 -0.08 0.00 0.18
3 0.0712 0.00 -0.02 0.00 0.11
4 0.0713 0.00 0.16 0.00 0.09
5 0.0768 0.00 -0.01 0.00 -0.05
6 0.1367 0.00 -0.05 0.00 -0.00
7 0.1393 0.00 -0.07 0.00 0.03
8 0.1394 0.00 0.05 0.00 -0.03
9 0.1396 0.00 -0.06 0.00 -0.14
10 0.1451 0.00 -0.05 0.00 0.05
11 0.1504 0.00 -0.03 0.00 -0.08
12 0.1559 0.00 0.10 0.00 0.01
13 0.1560 0.00 -0.21 0.00 -0.04
14 0.2321 0.00 0.02 0.00 -0.03
15 0.2571 0.00 0.02 0.00 -0.04
16 0.2572 0.00 0.11 0.00 -0.13
17 0.3309 0.00 -0.05 0.00 -0.01
18 0.3335 0.00 -0.06 0.00 0.07
19 0.3882 0.00 -0.07 0.00 -0.03
20 0.4074 0.00 0.02 0.00 0.01
21 0.4075 0.00 0.07 0.00 -0.03
22 0.9558 0.00 0.01 0.00 -0.06
23 0.9723 0.00 0.10 0.00 0.14
24 1.0543 0.00 0.05 0.00 0.02
25 1.1934 0.00 0.17 0.00 0.03
26 1.1960 0.00 -0.19 0.00 -0.12
27 1.2070 0.00 0.08 0.00 -0.03
28 1.2671 0.00 -0.01 0.00 0.01
29 1.2865 0.00 -0.02 0.00 0.03
30 1.3493 0.00 -0.09 0.00 -0.03
31 2.1003 0.00 -0.11 0.00 -0.14
32 2.1026 0.00 0.01 0.00 0.20
33 6.2225 0.00 -0.10 0.00 -0.12
34 6.2226 0.00 0.11 0.00 -0.00
35 6.2227 0.00 0.00 0.00 0.12
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.
15GG56 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.315 43.315 43.315 ecceobj 0.085 0.085 0.085 incobj 3.537 3.537 3.537 qmin 37.570 37.607 37.619 qmax 49.941 49.925 49.922 amean 43.583 43.582 43.583 amin 43.213 43.205 43.190 amax 43.976 43.979 43.987 emean 0.111 0.110 0.110 emin 0.073 0.073 0.073 emax 0.136 0.135 0.135 imean 3.130 3.129 3.125 imin 1.495 1.554 1.565 imax 4.444 4.443 4.436 excite_mean 0.124 0.124 0.124 fracstop 1.000 1.000 1.000 cjmean 3.077 3.077 3.078 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 177.5 177.4 177.2 kozaiamp 180.0 180.0 180.0