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: 15GZ55
# Created Sun Nov 24 02:10:16 2024
# Orbit generated from Bernstein formalism
# Fitting 39 observations of 39
# Arc: 2.35y
# First observation: 2015/02/17
# Last observation: 2017/06/25
Preliminary a, adot, b, bdot, g, gdot:
-0.000139 0.028400 0.000006 0.002071 0.025003 0.000000
# Chi-squared of fit: 5.01 DOF: 72 RMS: 0.06
# Min/Max residuals: -0.26 0.23
# Exact a, adot, b, bdot, g, gdot:
1.775514E-05 2.845695E-02 1.458431E-06 2.086707E-03 2.514437E-02 6.385025E-03
# Covariance matrix:
1.3471E-13 -3.7848E-14 -6.4473E-16 1.9896E-15 7.3565E-14 4.6107E-13
-3.7848E-14 3.3636E-13 -8.0366E-15 3.0706E-14 1.5878E-13 7.0878E-12
-6.4473E-16 -8.0366E-15 8.6802E-14 -6.2395E-14 -4.8128E-15 -2.2017E-13
1.9896E-15 3.0706E-14 -6.2395E-14 8.0891E-14 1.7780E-14 8.4312E-13
7.3565E-14 1.5878E-13 -4.8128E-15 1.7780E-14 1.7323E-13 4.1064E-12
4.6107E-13 7.0878E-12 -2.2017E-13 8.4312E-13 4.1064E-12 1.9461E-10
# lat0 lon0 xBary yBary zBary JD0
0.544330 -152.600265 0.845907 0.004945 -0.505189 2457071.023648
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 15.07635 +/- 0.022
Argument of Peri: 327.89734 +/- 0.065
Long of Asc Node: 198.88865 +/- 0.001
Inclination: 4.21850 +/- 0.001
Eccentricity: 0.42568465 +/- 0.0004
Semi-Major Axis: 65.38092244 +/- 0.0305
Time of Perihelion: 2448983.8515 +/- 10.1
Perihelion: 37.54926768 +/- 0.0333
Aphelion: 93.21257720 +/- 0.0519
Period (y) 528.6701 +/- 0.37
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -36.14772061 +/- 0.0006
Ecliptic Y -17.78282252 +/- 0.0003
Ecliptic Z 0.37788083 +/- 0.0000
Ecliptic XDOT 0.00080699 +/- 0.0000
Ecliptic YDOT -0.00307544 +/- 0.0000
Ecliptic ZDOT 0.00023390 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.28683750 +/- 0.0005
Geocenter to KBO 39.77033275 +/- 0.0007
# Hcoef: 7.78
The following table shows the complete astrometric record for 15GZ55. 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 (15GZ55) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.52287 13 42 31.928 -10 02 22.98 23.8r 15GZ55 568 C~2lVD 2015 02 17.56399 13 42 31.844 -10 02 22.42 23.7r 15GZ55 568 C~2lVD 2015 02 20.59770 13 42 25.946 -10 01 42.74 24.0r 15GZ55 568 C~2lVD 2015 03 18.50144 13 41 07.396 -09 53 26.79 24.1r 15GZ55 568 C~2lVD 2015 03 18.54235 13 41 07.227 -09 53 25.78 23.8r 15GZ55 568 C~2lVD 2015 03 20.54594 13 40 59.412 -09 52 37.73 23.8r 15GZ55 568 C~2lVD 2015 04 11.48071 13 39 24.344 -09 43 00.61 23.7r 15GZ55 568 C~2lVD 2015 04 12.38760 13 39 20.203 -09 42 35.40 23.8r 15GZ55 568 C~2lVD 2015 04 12.43323 13 39 19.988 -09 42 34.35 23.8r 15GZ55 568 C~2lVD 2015 04 12.47547 13 39 19.781 -09 42 33.15 23.7r 15GZ55 568 C~2lVD 2015 04 18.44608 13 38 52.277 -09 39 47.71 23.6r 15GZ55 568 C~2lVD 2015 04 18.49382 13 38 52.060 -09 39 46.52 23.7r 15GZ55 568 C~2lVD 2015 05 17.25497 13 36 47.356 -09 27 20.11 23.6r 15GZ55 568 C~2lVD 2015 05 25.39688 13 36 17.824 -09 24 24.02 23.8r 15GZ55 568 C~2lVD 2015 05 25.45500 13 36 17.621 -09 24 22.84 23.9r 15GZ55 568 C~2lVD 2015 06 21.34643 13 35 11.625 -09 17 47.17 23.9r 15GZ55 568 C~2lVD 2015 06 22.30309 13 35 10.326 -09 17 39.24 24.2r 15GZ55 568 C~2lVD 2015 07 12.29701 13 35 01.450 -09 16 41.03 24.1r 15GZ55 568 C~2lVD 2015 07 19.28682 13 35 06.887 -09 17 10.34 23.9r 15GZ55 568 C~2lVD 2016 02 04.62644 13 49 06.131 -10 32 13.48 24.1w 15GZ55 568 C~2lVD 2016 02 04.63139 13 49 06.126 -10 32 13.21 24.3w 15GZ55 568 C~2lVD 2016 02 04.63544 13 49 06.125 -10 32 13.22 24.4w 15GZ55 568 C~2lVD 2016 02 11.60966 13 49 00.648 -10 31 26.79 24.3w 15GZ55 568 C~2lVD 2016 02 11.61375 13 49 00.643 -10 31 26.77 24.2w 15GZ55 568 C~2lVD 2016 03 11.61710 13 47 53.039 -10 24 07.75 22.4w 15GZ55 568 C~2lVD 2016 03 12.48956 13 47 50.062 -10 23 49.39 24.2w 15GZ55 568 C~2lVD 2016 04 03.48576 13 46 22.061 -10 14 57.44 24.0w 15GZ55 568 C~2lVD 2016 04 09.46692 13 45 55.237 -10 12 17.66 24.0w 15GZ55 568 C~2lVD 2016 05 02.35585 13 44 10.998 -10 02 02.00 24.1w 15GZ55 568 C~2lVD 2016 05 07.35921 13 43 49.202 -09 59 54.16 24.1w 15GZ55 568 C~2lVD 2016 05 29.33148 13 42 25.738 -09 51 45.88 23.7w 15GZ55 568 C~2lVD 2016 06 04.39391 13 42 07.474 -09 49 59.46 24.2w 15GZ55 568 C~2lVD 2016 06 27.31561 13 41 23.391 -09 45 41.99 24.2w 15GZ55 568 C~2lVD 2016 07 07.31185 13 41 18.010 -09 45 09.77 24.2w 15GZ55 568 C~2lVD 2017 02 27.65350 13 54 47.785 -10 55 20.49 15GZ55 568 C~2lVD 2017 03 30.51590 13 53 01.732 -10 44 35.55 23.9w 15GZ55 568 C~2lVD 2017 03 31.45116 13 52 57.762 -10 44 11.93 24.3w 15GZ55 568 C~2lVD 2017 05 24.25622 13 49 04.226 -10 21 38.51 24.0w 15GZ55 568 C~2lVD 2017 06 25.28243 13 47 42.486 -10 13 54.23 24.2w 15GZ55 568 C~2lVD
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 -0.03
2 0.0001 -1.36 -0.07 0.08 -0.01
3 0.0084 -96.91 0.02 5.87 0.03
4 0.0793 -1358.12 0.08 51.90 -0.05
5 0.0795 -1360.81 -0.04 51.95 -0.05
6 0.0849 -1485.86 0.00 55.24 0.00
7 0.1450 -3004.82 -0.04 87.33 0.03
8 0.1475 -3071.03 0.05 88.75 0.23
9 0.1476 -3074.38 0.11 88.58 0.03
10 0.1477 -3077.67 -0.03 88.60 0.01
11 0.1641 -3516.76 -0.07 96.06 0.07
12 0.1642 -3520.18 0.08 96.01 -0.02
13 0.2429 -5510.83 -0.07 124.28 0.10
14 0.2652 -5982.30 -0.01 129.85 -0.04
15 0.2654 -5985.53 -0.03 129.86 -0.05
16 0.3390 -7040.37 -0.01 143.65 0.00
17 0.3416 -7061.19 0.03 144.05 0.02
18 0.3964 -7204.93 -0.05 150.48 0.00
19 0.4155 -7119.19 0.04 152.46 0.03
20 0.9640 6075.85 0.08 399.89 -0.26
21 0.9640 6075.69 -0.04 400.12 -0.05
22 0.9640 6075.68 -0.01 400.10 -0.07
23 0.9831 5983.62 -0.02 414.95 0.01
24 0.9831 5983.55 -0.02 414.94 -0.00
25 1.0625 4894.73 -0.09 472.10 -0.03
26 1.0649 4847.12 0.03 473.68 -0.07
27 1.1252 3443.63 0.05 509.41 -0.05
28 1.1415 3016.62 -0.05 517.72 -0.01
29 1.2042 1358.80 0.04 543.55 0.08
30 1.2179 1012.40 0.05 547.80 0.01
31 1.2781 -313.88 0.01 561.91 0.00
32 1.2947 -604.02 -0.01 564.39 -0.09
33 1.3574 -1304.64 -0.03 570.63 -0.01
34 1.3848 -1390.45 -0.02 572.10 0.09
35 2.0291 11286.71 -0.04 873.24 -0.06
36 2.1136 9593.00 0.04 930.00 -0.03
37 2.1162 9529.79 -0.04 931.58 0.07
38 2.2635 5824.68 0.05 984.06 0.06
39 2.3512 4531.25 -0.01 990.56 0.13
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.
15GZ55 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 64.285 64.377 64.194 ecceobj 0.416 0.417 0.415 incobj 4.234 4.234 4.234 qmin 36.784 36.824 36.893 qmax 94.835 94.967 93.875 amean 64.949 65.062 64.720 amin 64.070 64.043 63.937 amax 66.169 66.262 65.736 emean 0.421 0.422 0.418 emin 0.409 0.410 0.408 emax 0.434 0.434 0.429 imean 4.627 4.659 4.728 imin 4.133 4.160 4.366 imax 5.086 5.077 5.064 excite_mean 0.429 0.430 0.426 fracstop 1.000 1.000 1.000 cjmean 3.119 3.119 3.120 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 168.1 169.4 172.2 kozaiamp 180.0 180.0 180.0