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: 15KK173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 30
# Arc: 2.23y
# First observation: 2015/02/25
# Last observation: 2017/05/21
Preliminary a, adot, b, bdot, g, gdot:
-0.000286 0.040864 0.000030 -0.005374 0.033141 0.000000
# Chi-squared of fit: 7.61 DOF: 54 RMS: 0.09
# Min/Max residuals: -0.17 0.30
# Exact a, adot, b, bdot, g, gdot:
2.005149E-05 4.034545E-02 -1.839352E-06 -5.316057E-03 3.286728E-02 6.795573E-03
# Covariance matrix:
1.8344E-13 -7.5951E-14 -8.0412E-15 -3.7262E-16 1.0647E-13 1.0630E-13
-7.5951E-14 5.7064E-13 2.0342E-15 -6.2023E-14 2.1227E-13 8.4427E-12
-8.0412E-15 2.0342E-15 1.0175E-13 -8.3183E-14 -9.1334E-15 4.1318E-14
-3.7262E-16 -6.2023E-14 -8.3183E-14 1.3721E-13 -2.9034E-14 -1.1845E-12
1.0647E-13 2.1227E-13 -9.1334E-15 -2.9034E-14 2.3112E-13 4.0218E-12
1.0630E-13 8.4427E-12 4.1318E-14 -1.1845E-12 4.0218E-12 1.6122E-10
# lat0 lon0 xBary yBary zBary JD0
7.633044 -123.169360 0.973069 0.021978 -0.163042 2457079.117438
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 23.08442 +/- 0.030
Argument of Peri: 94.03742 +/- 0.060
Long of Asc Node: 101.12462 +/- 0.002
Inclination: 10.46812 +/- 0.000
Eccentricity: 0.25874353 +/- 0.0003
Semi-Major Axis: 39.36451988 +/- 0.0067
Time of Perihelion: 2451285.9125 +/- 7.3
Perihelion: 29.17920514 +/- 0.0114
Aphelion: 49.54983462 +/- 0.0133
Period (y) 246.9822 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -17.40577768 +/- 0.0002
Ecliptic Y -24.84723718 +/- 0.0004
Ecliptic Z 4.04130554 +/- 0.0001
Ecliptic XDOT 0.00247043 +/- 0.0000
Ecliptic YDOT -0.00236324 +/- 0.0000
Ecliptic ZDOT -0.00036362 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 30.60520287 +/- 0.0003
Geocenter to KBO 30.42539450 +/- 0.0004
# Hcoef: 9.09
The following table shows the complete astrometric record for 15KK173. 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 (15KK173) followed by the observatory code and reference code for the source of the astrometry.
2015 02 25.61666 15 45 19.173 -12 00 49.09 24.0r 15KK173 568 C~2lVF 2015 03 19.64088 15 44 58.272 -11 55 14.26 24.1r 15KK173 568 C~2lVF 2015 03 22.53917 15 44 50.989 -11 54 18.96 23.9r 15KK173 568 C~2lVF 2015 03 22.62952 15 44 50.749 -11 54 17.32 15KK173 568 C~2lVF 2015 04 13.57241 15 43 26.148 -11 46 26.40 24.0r 15KK173 568 C~2lVF 2015 04 13.61353 15 43 25.938 -11 46 25.54 23.9r 15KK173 568 C~2lVF 2015 04 18.58247 15 43 00.702 -11 44 32.42 23.7r 15KK173 568 C~2lVF 2015 04 18.59119 15 43 00.659 -11 44 32.25 23.9r 15KK173 568 C~2lVF 2015 05 21.34311 15 39 44.086 -11 32 59.96 24.0r 15KK173 568 C~2lVF 2015 05 21.38417 15 39 43.828 -11 32 59.28 23.9r 15KK173 568 C~2lVF 2015 05 21.42550 15 39 43.552 -11 32 58.59 24.0r 15KK173 568 C~2lVF 2015 05 22.50179 15 39 36.739 -11 32 39.64 23.9r 15KK173 568 C~2lVF 2015 05 25.49257 15 39 17.909 -11 31 48.56 23.8r 15KK173 568 C~2lVF 2015 06 20.38172 15 36 47.761 -11 26 47.22 24.1r 15KK173 568 C~2lVF 2015 06 20.42253 15 36 47.547 -11 26 46.97 24.0r 15KK173 568 C~2lVF 2015 06 23.44287 15 36 32.539 -11 26 30.85 23.8r 15KK173 568 C~2lVF 2015 07 12.30549 15 35 16.871 -11 26 33.06 24.0r 15KK173 568 C~2lVF 2015 07 18.38638 15 35 00.117 -11 27 12.74 24.2r 15KK173 568 C~2lVF 2016 02 06.64530 15 53 34.384 -12 50 25.54 24.4w 15KK173 568 C~2lVF 2016 02 12.63085 15 53 51.986 -12 50 10.63 24.5w 15KK173 568 C~2lVF 2016 03 15.64429 15 54 05.290 -12 44 37.19 24.7w 15KK173 568 C~2lVF 2016 04 08.62452 15 52 51.570 -12 37 07.44 24.4w 15KK173 568 C~2lVF 2016 04 09.56848 15 52 47.447 -12 36 47.79 24.1w 15KK173 568 C~2lVF 2016 04 29.50952 15 51 03.880 -12 29 47.21 24.1w 15KK173 568 C~2lVF 2016 05 04.48214 15 50 34.347 -12 28 04.98 24.2w 15KK173 568 C~2lVF 2016 05 30.45796 15 47 51.745 -12 20 26.15 24.1w 15KK173 568 C~2lVF 2016 07 04.31842 15 44 46.001 -12 16 10.70 24.2w 15KK173 568 C~2lVF 2016 07 05.39078 15 44 41.702 -12 16 11.44 24.2w 15KK173 568 C~2lVF 2017 03 28.61223 16 02 34.324 -13 27 52.40 22.8w 15KK173 568 C~2lVF 2017 05 21.54276 15 57 56.464 -13 11 06.97 24.2w 15KK173 568 C~2lVF
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 -0.15
2 0.0603 -373.55 -0.03 258.14 0.05
3 0.0682 -490.08 -0.02 288.22 -0.04
4 0.0685 -493.88 0.21 289.04 -0.12
5 0.1286 -1809.79 -0.04 470.41 0.10
6 0.1287 -1812.99 -0.09 470.56 0.01
7 0.1423 -2199.55 -0.09 497.66 -0.05
8 0.1423 -2200.21 -0.03 497.68 -0.07
9 0.2320 -5170.85 0.09 519.65 0.14
10 0.2321 -5174.69 0.19 519.45 0.11
11 0.2322 -5178.80 0.06 519.20 0.04
12 0.2351 -5280.68 0.04 514.88 -0.05
13 0.2433 -5561.98 -0.04 501.64 0.04
14 0.3142 -7781.82 -0.02 289.96 0.02
15 0.3143 -7784.94 -0.05 289.48 0.01
16 0.3226 -8003.70 -0.08 254.40 0.04
17 0.3742 -9087.52 -0.02 -4.52 0.09
18 0.3909 -9318.43 0.04 -100.20 0.10
19 0.9474 7733.20 0.08 -1318.04 0.05
20 0.9638 7981.78 0.02 -1248.15 0.03
21 1.0514 8100.44 0.00 -880.44 0.02
22 1.1171 6948.58 -0.09 -673.03 -0.17
23 1.1196 6885.34 -0.01 -666.85 -0.09
24 1.1742 5312.49 -0.07 -584.46 -0.08
25 1.1879 4867.82 0.06 -578.75 -0.04
26 1.2590 2442.27 -0.04 -652.67 -0.00
27 1.3544 -268.94 0.04 -1006.82 -0.09
28 1.3574 -330.20 0.01 -1021.60 -0.14
29 2.0862 15944.50 0.11 -1855.97 0.30
30 2.2339 11749.15 -0.11 -1716.86 -0.06
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.
15KK173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 38.982 39.009 38.955 ecceobj 0.251 0.252 0.250 incobj 10.463 10.463 10.463 qmin 28.651 28.719 28.753 qmax 50.803 50.770 50.880 amean 39.455 39.455 39.456 amin 38.982 38.998 38.955 amax 39.993 40.015 40.047 emean 0.237 0.239 0.222 emin 0.201 0.205 0.186 emax 0.272 0.270 0.272 imean 10.811 10.860 11.580 imin 8.863 8.870 8.835 imax 12.904 12.550 13.143 excite_mean 0.303 0.305 0.300 fracstop 1.000 1.000 1.000 cjmean 2.947 2.946 2.949 libcent 0 179.9 180.4 178.5 libamp 0 97.2 84.2 107.3 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 97.2 91.2 160.1 kozaiamp 48.3 37.7 180.0