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: 23BF9
# Created Fri Nov 1 01:10:54 2024
# Orbit generated from Bernstein formalism
# Fitting 22 observations of 22
# Arc: 6.01d
# First observation: 2023/01/17
# Last observation: 2023/01/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.094279 -0.000001 0.008457 0.049301 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 8.70 DOF: 39 RMS: 0.11
# Min/Max residuals: -0.31 0.30
# Exact a, adot, b, bdot, g, gdot:
2.271598E-05 7.781248E-02 2.584791E-06 1.186275E-02 5.395271E-02 1.423897E-03
# Covariance matrix:
5.3460E-12 1.7543E-08 -1.6254E-12 -3.6244E-09 -4.9427E-09 -2.5952E-07
1.7543E-08 6.1018E-05 -5.6085E-09 -1.2579E-05 -1.7135E-05 -8.6755E-04
-1.6254E-12 -5.6085E-09 7.1999E-13 1.1382E-09 1.5764E-09 8.0984E-08
-3.6244E-09 -1.2579E-05 1.1382E-09 2.5958E-06 3.5329E-06 1.7930E-04
-4.9427E-09 -1.7135E-05 1.5764E-09 3.5329E-06 4.8132E-06 2.4486E-04
-2.5952E-07 -8.6755E-04 8.0984E-08 1.7930E-04 2.4486E-04 1.3424E-02
# lat0 lon0 xBary yBary zBary JD0
8.496303 -7.374735 -0.815608 -0.082503 0.551125 2459961.725770
# Heliocentric elements and errors
Epoch: 2459960.5000 = 2023/01/16
Mean Anomaly: 107.56520 +/- 172.088
Argument of Peri: 292.18444 +/- 181.543
Long of Asc Node: 308.94825 +/- 7.770
Inclination: 12.01036 +/- 1.503
Eccentricity: 0.06753674 +/- 1.4568
Semi-Major Axis: 17.58198207 +/- 5.1476
Time of Perihelion: 2451914.6958 +/- 12377.6
Perihelion: 16.39455236 +/- 26.0587
Aphelion: 18.76941178 +/- 26.1957
Period (y) 73.7242 +/- 32.38
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 17.74081666 +/- 0.7393
Ecliptic Y -1.47211903 +/- 0.0956
Ecliptic Z 2.73843473 +/- 0.1113
Ecliptic XDOT 0.00048835 +/- 0.0057
Ecliptic YDOT 0.00392716 +/- 0.0013
Ecliptic ZDOT 0.00060600 +/- 0.0009
# Distances at JD0 (AU)
Heliocenter to KBO 18.01118361 +/- 0.7284
Geocenter to KBO 18.53474876 +/- 0.7537
# Hcoef: 10.71
The following table shows the complete astrometric record for 23BF9. 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 (23BF9) followed by the observatory code and reference code for the source of the astrometry.
2023 01 17.224969 23 19 28.814 +04 52 45.34 23.4r 23BF9 T09 C~6DMH 2023 01 17.239167 23 19 28.954 +04 52 45.73 23.6r 23BF9 T09 C~6DMH 2023 01 17.253308 23 19 29.093 +04 52 46.49 23.7r 23BF9 T09 C~6DMH 2023 01 17.267465 23 19 29.232 +04 52 47.06 23.6r 23BF9 T09 C~6DMH 2023 01 18.229936 23 19 38.736 +04 53 30.41 23.4V 23BF9 T09 C~6DMH 2023 01 18.241207 23 19 38.837 +04 53 30.48 23.5V 23BF9 T09 C~6DMH 2023 01 18.252514 23 19 38.945 +04 53 31.20 23.5V 23BF9 T09 C~6DMH 2023 01 20.226139 23 19 58.863 +04 55 03.64 22.9G 23BF9 T14 C~6DMH 2023 01 20.227696 23 19 58.874 +04 55 04.05 23.5G 23BF9 T14 C~6DMH 2023 01 20.229251 23 19 58.914 +04 55 04.11 23.4G 23BF9 T14 C~6DMH 2023 01 20.230808 23 19 58.904 +04 55 04.18 23.1G 23BF9 T14 C~6DMH 2023 01 20.239033 23 19 58.989 +04 55 04.46 23.5G 23BF9 T14 C~6DMH 2023 01 20.240592 23 19 58.999 +04 55 04.64 23.9G 23BF9 T14 C~6DMH 2023 01 20.242158 23 19 59.038 +04 55 04.81 23.4G 23BF9 T14 C~6DMH 2023 01 20.243923 23 19 59.047 +04 55 04.84 22.7G 23BF9 T14 C~6DMH 2023 01 21.231696 23 20 09.223 +04 55 52.90 24.1r 23BF9 T09 C~6DMH 2023 01 21.240161 23 20 09.305 +04 55 53.33 23.5r 23BF9 T09 C~6DMH 2023 01 21.248601 23 20 09.391 +04 55 53.83 23.7r 23BF9 T09 C~6DMH 2023 01 21.257078 23 20 09.485 +04 55 54.19 23.5r 23BF9 T09 C~6DMH 2023 01 23.232092 23 20 30.268 +04 57 34.35 23.0G 23BF9 T14 C~6DMH 2023 01 23.233651 23 20 30.285 +04 57 34.44 23.3G 23BF9 T14 C~6DMH 2023 01 23.235207 23 20 30.294 +04 57 34.52 23.0G 23BF9 T14 C~6DMH
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 0.02 0.00 0.18
2 0.0000 2.08 -0.04 -0.47 -0.05
3 0.0001 4.28 0.04 -0.59 0.07
4 0.0001 6.42 0.04 -0.89 0.01
5 0.0028 154.02 0.14 -17.32 0.04
6 0.0028 155.43 -0.17 -17.85 -0.31
7 0.0028 157.20 -0.13 -17.83 -0.10
8 0.0082 467.15 -0.09 -50.76 -0.23
9 0.0082 467.47 -0.02 -50.45 0.11
10 0.0082 468.04 0.30 -50.63 -0.05
11 0.0082 467.93 -0.05 -50.51 0.10
12 0.0083 469.21 -0.07 -50.75 -0.02
13 0.0083 469.41 -0.11 -50.65 0.12
14 0.0083 470.02 0.24 -50.72 0.07
15 0.0083 470.15 0.10 -50.75 0.07
16 0.0110 628.84 -0.04 -66.79 -0.04
17 0.0110 630.13 -0.10 -66.88 0.00
18 0.0110 631.51 -0.08 -66.93 0.09
19 0.0110 632.94 -0.01 -67.16 -0.01
20 0.0164 957.82 0.04 -98.04 -0.04
21 0.0165 958.09 0.05 -98.06 -0.03
22 0.0165 958.24 -0.05 -98.04 0.01
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.
23BF9 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0