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: 15GB58
# Created Wed May 8 01:17:05 2024
# Orbit generated from Bernstein formalism
# Fitting 27 observations of 27
# Arc: 2.25y
# First observation: 2015/02/17
# Last observation: 2017/05/18
Preliminary a, adot, b, bdot, g, gdot:
-0.000220 0.027218 0.000007 -0.001896 0.025578 0.000000
# Chi-squared of fit: 3.51 DOF: 48 RMS: 0.06
# Min/Max residuals: -0.15 0.18
# Exact a, adot, b, bdot, g, gdot:
1.677504E-05 2.698234E-02 -1.549950E-06 -1.878934E-03 2.572395E-02 -4.405082E-04
# Covariance matrix:
2.2172E-13 -1.1194E-13 -1.1868E-15 1.4532E-15 1.3300E-13 -3.9203E-13
-1.1194E-13 8.9032E-13 1.4071E-14 -7.2105E-14 2.6197E-13 1.9805E-11
-1.1868E-15 1.4071E-14 9.9269E-14 -7.6519E-14 4.2025E-15 3.6187E-13
1.4532E-15 -7.2105E-14 -7.6519E-14 1.3204E-13 -2.7106E-14 -1.8757E-12
1.3300E-13 2.6197E-13 4.2025E-15 -2.7106E-14 2.6491E-13 7.4536E-12
-3.9203E-13 1.9805E-11 3.6187E-13 -1.8757E-12 7.4536E-12 5.1523E-10
# lat0 lon0 xBary yBary zBary JD0
2.046043 -156.140101 0.812571 0.020035 -0.556893 2457071.077078
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 344.12765 +/- 0.355
Argument of Peri: 172.83877 +/- 0.453
Long of Asc Node: 49.73107 +/- 0.004
Inclination: 4.42651 +/- 0.001
Eccentricity: 0.11303981 +/- 0.0003
Semi-Major Axis: 44.19750762 +/- 0.0038
Time of Perihelion: 2461802.3821 +/- 105.8
Perihelion: 39.20142957 +/- 0.0119
Aphelion: 49.19358568 +/- 0.0122
Period (y) 293.8359 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -36.37039064 +/- 0.0007
Ecliptic Y -15.19696700 +/- 0.0003
Ecliptic Z 1.38785423 +/- 0.0000
Ecliptic XDOT 0.00119431 +/- 0.0000
Ecliptic YDOT -0.00261586 +/- 0.0000
Ecliptic ZDOT -0.00020143 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.44210011 +/- 0.0007
Geocenter to KBO 38.87428289 +/- 0.0008
# Hcoef: 8.24
The following table shows the complete astrometric record for 15GB58. 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 (15GB58) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.57630 13 31 23.466 -07 21 23.35 24.9r 15GB58 568 C~2nvY 2015 02 17.61724 13 31 23.378 -07 21 22.84 24.1r 15GB58 568 C~2nvY 2015 03 18.55474 13 29 48.003 -07 11 28.21 24.0r 15GB58 568 C~2nvY 2015 03 18.59568 13 29 47.829 -07 11 27.07 24.1r 15GB58 568 C~2nvY 2015 04 11.49312 13 27 58.467 -07 00 47.56 24.2r 15GB58 568 C~2nvY 2015 04 13.35741 13 27 49.515 -06 59 56.70 24.1r 15GB58 568 C~2nvY 2015 04 13.39836 13 27 49.325 -06 59 55.57 23.8r 15GB58 568 C~2nvY 2015 04 13.47268 13 27 48.946 -06 59 53.55 24.2r 15GB58 568 C~2nvY 2015 04 13.47763 13 27 48.930 -06 59 53.32 24.0r 15GB58 568 C~2nvY 2015 04 19.39819 13 27 20.495 -06 57 12.60 23.6r 15GB58 568 C~2nvY 2015 04 19.50989 13 27 19.946 -06 57 09.70 23.9r 15GB58 568 C~2nvY 2015 04 19.51516 13 27 19.932 -06 57 09.31 24.7r 15GB58 568 C~2nvY 2015 05 18.27253 13 25 13.106 -06 45 42.99 24.1r 15GB58 568 C~2nvY 2015 06 20.27087 13 23 44.335 -06 38 56.92 24.2r 15GB58 568 C~2nvY 2015 06 20.31175 13 23 44.275 -06 38 56.73 24.4r 15GB58 568 C~2nvY 2015 06 22.31546 13 23 41.675 -06 38 49.71 24.2r 15GB58 568 C~2nvY 2015 07 14.26780 13 23 37.026 -06 39 57.68 24.2r 15GB58 568 C~2nvY 2015 07 20.29800 13 23 43.541 -06 41 02.87 24.3r 15GB58 568 C~2nvY 2016 02 04.56733 13 37 23.165 -08 03 41.69 24.3w 15GB58 568 C~2nvY 2016 02 11.57713 13 37 14.672 -08 02 39.16 24.4w 15GB58 568 C~2nvY 2016 03 11.55250 13 35 55.261 -07 54 19.91 24.3w 15GB58 568 C~2nvY 2016 03 12.47618 13 35 51.749 -07 53 58.75 24.5w 15GB58 568 C~2nvY 2016 04 03.43722 13 34 16.456 -07 44 41.98 24.5w 15GB58 568 C~2nvY 2016 04 09.41701 13 33 47.992 -07 42 00.09 24.1w 15GB58 568 C~2nvY 2017 02 24.64707 13 42 27.486 -08 39 17.75 15GB58 568 C~2nvY 2017 03 29.46871 13 40 25.609 -08 27 20.61 24.3w 15GB58 568 C~2nvY 2017 05 18.26658 13 36 35.565 -08 06 30.52 24.2w 15GB58 568 C~2nvY
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 -0.04 0.00 0.08
2 0.0001 -1.40 0.09 -0.01 0.03
3 0.0793 -1539.76 0.02 31.97 -0.12
4 0.0795 -1542.58 -0.01 32.08 -0.01
5 0.1449 -3291.79 -0.08 27.51 0.08
6 0.1500 -3434.46 -0.03 25.67 -0.13
7 0.1501 -3437.51 0.11 25.68 -0.06
8 0.1503 -3443.50 -0.09 25.48 -0.15
9 0.1503 -3443.81 -0.01 25.60 -0.02
10 0.1665 -3896.75 0.01 18.89 0.01
11 0.1668 -3905.42 -0.01 18.57 -0.12
12 0.1668 -3905.76 0.06 18.85 0.18
13 0.2456 -5915.63 0.09 -41.03 0.07
14 0.3359 -7295.87 -0.01 -153.51 0.04
15 0.3360 -7296.77 -0.02 -153.66 0.06
16 0.3415 -7335.40 -0.08 -161.50 0.03
17 0.4016 -7374.59 -0.01 -250.36 -0.03
18 0.4181 -7260.14 0.02 -274.95 0.07
19 0.9637 5906.00 -0.01 -410.56 0.04
20 0.9829 5765.65 -0.04 -398.16 0.00
21 1.0622 4484.40 0.04 -362.49 -0.03
22 1.0647 4428.08 0.05 -361.80 0.04
23 1.1249 2905.97 -0.04 -360.01 0.00
24 1.1412 2452.91 -0.05 -363.90 -0.03
25 2.0207 10897.83 -0.05 -767.16 -0.01
26 2.1106 8948.51 0.03 -751.11 -0.08
27 2.2469 5308.51 0.05 -825.09 0.05
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.
15GB58 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.754 43.767 43.741 ecceobj 0.105 0.105 0.105 incobj 4.437 4.437 4.437 qmin 38.644 38.611 38.598 qmax 49.802 49.783 49.703 amean 44.040 44.054 44.028 amin 43.686 43.694 43.671 amax 44.434 44.453 44.408 emean 0.102 0.102 0.102 emin 0.085 0.085 0.085 emax 0.121 0.120 0.120 imean 3.108 3.120 3.095 imin 2.276 2.288 2.267 imax 3.906 3.908 3.903 excite_mean 0.116 0.116 0.116 fracstop 1.000 1.000 1.000 cjmean 3.086 3.086 3.086 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 183.2 183.1 183.0 kozaiamp 180.0 180.0 179.9