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: 15OJ190 # Created Thu Aug 21 01:10:52 2025 # Orbit generated from Bernstein formalism # Fitting 22 observations of 22 # Arc: 0.84y # First observation: 2014/09/18 # Last observation: 2015/07/22 Preliminary a, adot, b, bdot, g, gdot: -0.000023 0.028982 -0.000001 0.009453 0.027036 0.000000 # Chi-squared of fit: 15.29 DOF: 38 RMS: 0.15 # Min/Max residuals: -0.35 0.26 # Exact a, adot, b, bdot, g, gdot: 1.503412E-05 2.844567E-02 5.003457E-06 9.531593E-03 2.779078E-02 1.177110E-03 # Covariance matrix: 2.4772E-13 1.3106E-11 -2.3070E-15 3.0401E-12 5.8575E-12 4.0057E-10 1.3106E-11 3.2990E-09 -9.9252E-13 6.6445E-10 1.0126E-09 8.9097E-08 -2.3070E-15 -9.9252E-13 1.4872E-13 -3.6526E-13 -2.3906E-13 -2.5270E-11 3.0401E-12 6.6445E-10 -3.6526E-13 1.3712E-10 2.1809E-10 1.8278E-08 5.8575E-12 1.0126E-09 -2.3906E-13 2.1809E-10 3.7989E-10 2.8969E-08 4.0057E-10 8.9097E-08 -2.5270E-11 1.8278E-08 2.8969E-08 2.4445E-06 # lat0 lon0 xBary yBary zBary JD0 10.264352 -22.471224 -0.302250 0.171336 -0.945613 2456918.751848 # Heliocentric elements and errors Epoch: 2456910.5000 = 2014/09/10 Mean Anomaly: 24.36559 +/- 22.488 Argument of Peri: 359.42722 +/- 28.354 Long of Asc Node: 310.58648 +/- 0.013 Inclination: 20.95048 +/- 0.008 Eccentricity: 0.09830280 +/- 0.0292 Semi-Major Axis: 40.47442226 +/- 0.2644 Time of Perihelion: 2450544.8344 +/- 5874.7 Perihelion: 36.49567311 +/- 1.2051 Aphelion: 44.45317141 +/- 1.2164 Period (y) 257.5012 +/- 2.52 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.72022983 +/- 0.0229 Ecliptic Y -13.61948686 +/- 0.0095 Ecliptic Z 6.41204900 +/- 0.0045 Ecliptic XDOT 0.00101725 +/- 0.0001 Ecliptic YDOT 0.00260539 +/- 0.0001 Ecliptic ZDOT 0.00094477 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.92774966 +/- 0.0213 Geocenter to KBO 35.98316070 +/- 0.0252 # Hcoef: 9.91
The following table shows the complete astrometric record for 15OJ190. 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 (15OJ190) followed by the observatory code and reference code for the source of the astrometry.
2014 09 18.25107 22 21 40.44 +00 47 43.3 25.9g 15OJ190 T09 C~90Hi 2014 09 18.25969 22 21 40.36 +00 47 42.9 25.9g 15OJ190 T09 C~90Hi 2014 09 18.27261 22 21 40.33 +00 47 42.6 26.0g 15OJ190 T09 C~90Hi 2014 09 18.33749 22 21 39.99 +00 47 40.6 25.9y 15OJ190 T09 C~90Hi 2014 09 18.35377 22 21 39.93 +00 47 40.3 26.0y 15OJ190 T09 C~90Hi 2014 09 18.37024 22 21 39.86 +00 47 39.6 24.9y 15OJ190 T09 C~90Hi 2014 09 22.24066 22 21 21.69 +00 45 49.3 26.0r 15OJ190 T09 C~90Hi 2014 09 22.25348 22 21 21.65 +00 45 48.4 25.4r 15OJ190 T09 C~90Hi 2014 09 22.31871 22 21 21.35 +00 45 46.9 25.4r 15OJ190 T09 C~90Hi 2014 09 22.35333 22 21 21.19 +00 45 45.9 24.9i 15OJ190 T09 C~90Hi 2015 07 15.45241 22 32 03.77 +02 13 33.9 25.8r 15OJ190 T09 C~8eSn 2015 07 15.47587 22 32 03.69 +02 13 33.9 25.9r 15OJ190 T09 C~8eSn 2015 07 15.52482 22 32 03.50 +02 13 33.9 25.5r 15OJ190 T09 C~8eSn 2015 07 15.55122 22 32 03.41 +02 13 33.9 25.7r 15OJ190 T09 C~8eSn 2015 07 21.45521 22 31 41.72 +02 13 15.0 25.6i 15OJ190 T09 C~8eSn 2015 07 21.48716 22 31 41.58 +02 13 14.8 25.3i 15OJ190 T09 C~8eSn 2015 07 21.51699 22 31 41.46 +02 13 14.8 25.5i 15OJ190 T09 C~8eSn 2015 07 21.51969 22 31 41.46 +02 13 14.6 24.8i 15OJ190 T09 C~8eSn 2015 07 21.54967 22 31 41.33 +02 13 14.5 25.5i 15OJ190 T09 C~8eSn 2015 07 22.46248 22 31 37.76 +02 13 09.6 25.3z 15OJ190 T09 C~8eSn 2015 07 22.52810 22 31 37.52 +02 13 09.6 24.8z 15OJ190 T09 C~8eSn 2015 07 22.53081 22 31 37.50 +02 13 09.3 25.4z 15OJ190 T09 C~8eSn
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 0.24 0.00 0.09
2 0.0000 -1.26 -0.35 0.07 0.15
3 0.0001 -1.79 0.13 -0.04 0.04
4 0.0002 -7.27 -0.27 -0.03 0.03
5 0.0003 -8.22 0.06 0.02 0.07
6 0.0003 -9.45 0.11 -0.24 -0.20
7 0.0109 -303.44 -0.16 -2.63 0.26
8 0.0110 -304.33 -0.07 -3.25 -0.35
9 0.0111 -309.07 0.14 -2.99 -0.04
10 0.0112 -311.66 0.17 -3.04 -0.06
11 0.8219 10594.20 0.07 1360.65 -0.02
12 0.8220 10593.08 0.12 1361.09 -0.01
13 0.8221 10590.43 -0.08 1362.13 0.13
14 0.8222 10589.17 -0.01 1362.63 0.14
15 0.8383 10278.98 0.10 1464.28 -0.12
16 0.8384 10276.95 -0.10 1464.86 -0.09
17 0.8385 10275.27 -0.07 1465.52 0.06
18 0.8385 10275.20 0.02 1465.34 -0.17
19 0.8386 10273.34 -0.12 1465.96 -0.06
20 0.8411 10221.63 -0.23 1481.02 -0.02
21 0.8413 10218.28 0.26 1482.34 0.19
22 0.8413 10217.89 0.02 1482.17 -0.02
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.
15OJ190 quality flag:2 Type: SCATEXTD SCATNEAR SCATEXTD axisobj 40.733 42.843 40.227 ecceobj 0.104 0.223 0.085 incobj 20.910 20.930 20.909 qmin 36.071 30.399 36.097 qmax 45.638 57.103 44.451 amean 40.698 43.120 40.176 amin 40.341 42.228 39.852 amax 41.074 43.955 40.506 emean 0.099 0.243 0.083 emin 0.087 0.206 0.069 emax 0.112 0.299 0.098 imean 22.331 21.719 22.264 imin 21.697 19.706 21.585 imax 22.823 22.935 22.850 excite_mean 0.393 0.443 0.388 fracstop 1.000 1.000 1.000 cjmean 2.879 2.853 2.879 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 173.1 175.9 177.4 kozaiamp 180.0 180.0 179.9