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: 15VS227 # Created Wed Mar 26 01:10:47 2025 # Orbit generated from Bernstein formalism # Fitting 32 observations of 32 # Arc: 0.97y # First observation: 2015/01/21 # Last observation: 2016/01/09 Preliminary a, adot, b, bdot, g, gdot: -0.000235 0.026361 0.000010 0.004093 0.025789 0.000000 # Chi-squared of fit: 13.68 DOF: 58 RMS: 0.12 # Min/Max residuals: -0.31 0.22 # Exact a, adot, b, bdot, g, gdot: 1.546495E-05 2.649219E-02 3.383146E-06 4.176003E-03 2.629179E-02 1.396897E-03 # Covariance matrix: 2.2084E-13 7.2694E-13 -2.0852E-14 1.9667E-13 4.7475E-13 3.5307E-11 7.2694E-13 3.4718E-11 -6.0581E-13 7.2781E-12 1.1286E-11 1.1912E-09 -2.0852E-14 -6.0581E-13 1.2023E-13 -2.6606E-13 -2.1066E-13 -2.1307E-11 1.9667E-13 7.2781E-12 -2.6606E-13 1.8419E-12 2.4163E-12 2.5274E-10 4.7475E-13 1.1286E-11 -2.1066E-13 2.4163E-12 4.1081E-12 4.0211E-10 3.5307E-11 1.1912E-09 -2.1307E-11 2.5274E-10 4.0211E-10 4.1554E-08 # lat0 lon0 xBary yBary zBary JD0 -15.252911 140.063240 0.325133 -0.243616 -0.894032 2457043.945298 # Heliocentric elements and errors Epoch: 2457040.5000 = 2015/01/18 Mean Anomaly: 50.23806 +/- 3.475 Argument of Peri: 244.48288 +/- 4.279 Long of Asc Node: 198.54488 +/- 0.008 Inclination: 17.24104 +/- 0.001 Eccentricity: 0.05582967 +/- 0.0066 Semi-Major Axis: 40.29353027 +/- 0.0406 Time of Perihelion: 2444003.3778 +/- 901.5 Perihelion: 38.04395570 +/- 0.2699 Aphelion: 42.54310483 +/- 0.2706 Period (y) 255.7768 +/- 0.39 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -28.64102645 +/- 0.0022 Ecliptic Y 24.40042770 +/- 0.0018 Ecliptic Z -10.00607906 +/- 0.0008 Ecliptic XDOT -0.00197011 +/- 0.0000 Ecliptic YDOT -0.00195710 +/- 0.0000 Ecliptic ZDOT 0.00038137 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.93341606 +/- 0.0020 Geocenter to KBO 38.03468763 +/- 0.0029 # Hcoef: 8.56
The following table shows the complete astrometric record for 15VS227. 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 (15VS227) followed by the observatory code and reference code for the source of the astrometry.
2015 01 21.44452 09 10 50.49 +00 17 07.9 23.7i 15VS227 T09 C~8icU 2015 01 21.45697 09 10 50.42 +00 17 08.2 24.5i 15VS227 T09 C~8icU 2015 01 21.51165 09 10 50.14 +00 17 09.3 24.4i 15VS227 T09 C~8icU 2015 01 21.54090 09 10 50.02 +00 17 09.8 24.2i 15VS227 T09 C~8icU 2015 01 27.39521 09 10 21.24 +00 18 59.1 23.3y 15VS227 T09 C~8icU 2015 01 27.43096 09 10 21.06 +00 18 59.8 23.5y 15VS227 T09 C~8icU 2015 01 27.53242 09 10 20.54 +00 19 01.6 23.8y 15VS227 T09 C~8icU 2015 03 18.33529 09 06 32.93 +00 43 25.5 24.6r 15VS227 T09 C~8icU 2015 03 18.34385 09 06 32.91 +00 43 25.7 24.4r 15VS227 T09 C~8icU 2015 03 18.34606 09 06 32.89 +00 43 25.7 24.6r 15VS227 T09 C~8icU 2015 03 18.36332 09 06 32.85 +00 43 26.4 24.3r 15VS227 T09 C~8icU 2015 03 18.37860 09 06 32.79 +00 43 26.9 24.1r 15VS227 T09 C~8icU 2015 03 25.38568 09 06 10.63 +00 47 24.9 24.9g 15VS227 T09 C~8icU 2015 03 25.39368 09 06 10.63 +00 47 25.1 24.9g 15VS227 T09 C~8icU 2015 03 25.40010 09 06 10.61 +00 47 25.3 25.3g 15VS227 T09 C~8icU 2015 03 25.41076 09 06 10.58 +00 47 25.8 25.0g 15VS227 T09 C~8icU 2015 03 25.41289 09 06 10.57 +00 47 25.8 25.5g 15VS227 T09 C~8icU 2015 11 08.54855 09 19 45.02 +00 10 29.1 25.1r 15VS227 T09 C~8icU 2015 11 08.63991 09 19 45.10 +00 10 26.5 25.0r 15VS227 T09 C~8icU 2015 11 08.64203 09 19 45.10 +00 10 26.4 24.3r 15VS227 T09 C~8icU 2015 11 14.57872 09 19 49.71 +00 07 53.2 25.6g 15VS227 T09 C~8icU 2015 11 14.60004 09 19 49.72 +00 07 52.9 25.3g 15VS227 T09 C~8icU 2015 11 14.63646 09 19 49.73 +00 07 51.8 25.2g 15VS227 T09 C~8icU 2015 11 14.63858 09 19 49.73 +00 07 51.8 25.4g 15VS227 T09 C~8icU 2015 11 15.59440 09 19 50.14 +00 07 29.0 24.3z 15VS227 T09 C~8icU 2015 11 15.63493 09 19 50.15 +00 07 28.0 24.5z 15VS227 T09 C~8icU 2016 01 09.44737 09 17 50.96 +00 00 15.3 24.0y 15VS227 T09 C~8icU 2016 01 09.47342 09 17 50.83 +00 00 15.7 23.9y 15VS227 T09 C~8icU 2016 01 09.49531 09 17 50.75 +00 00 15.8 24.1y 15VS227 T09 C~8icU 2016 01 09.53920 09 17 50.55 +00 00 16.3 24.7y 15VS227 T09 C~8icU 2016 01 09.54731 09 17 50.51 +00 00 16.3 23.8y 15VS227 T09 C~8icU 2016 01 09.57457 09 17 50.38 +00 00 16.7 23.8y 15VS227 T09 C~8icU
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 0.10 0.00 -0.18
2 0.0000 -1.09 -0.05 -0.03 -0.13
3 0.0002 -5.43 -0.25 -0.27 -0.02
4 0.0003 -7.29 0.10 -0.34 0.09
5 0.0163 -451.76 -0.07 -27.91 0.04
6 0.0164 -454.54 -0.05 -28.07 0.02
7 0.0167 -462.52 -0.06 -28.73 -0.25
8 0.1530 -4160.88 -0.14 324.48 0.07
9 0.1530 -4161.23 0.03 324.58 0.02
10 0.1531 -4161.51 -0.12 324.48 -0.10
11 0.1531 -4162.30 0.14 324.97 0.10
12 0.1531 -4163.31 0.06 325.17 0.05
13 0.1723 -4552.59 -0.21 450.56 0.02
14 0.1723 -4552.65 0.15 450.75 0.07
15 0.1724 -4552.99 0.14 450.85 0.05
16 0.1724 -4553.58 0.12 451.19 0.19
17 0.1724 -4553.72 0.09 451.15 0.10
18 0.7970 7761.23 0.22 2067.36 0.13
19 0.7972 7763.17 0.09 2065.25 -0.04
20 0.7973 7763.20 0.07 2065.15 -0.09
21 0.8135 7875.94 0.09 1940.28 -0.17
22 0.8136 7876.18 0.04 1940.04 0.04
23 0.8137 7876.65 0.05 1939.04 -0.18
24 0.8137 7876.65 0.02 1939.04 -0.13
25 0.8163 7889.48 -0.01 1919.19 0.16
26 0.8164 7889.93 -0.02 1918.28 0.12
27 0.9665 6317.32 0.10 959.93 -0.03
28 0.9665 6315.34 -0.18 959.71 0.04
29 0.9666 6314.17 0.08 959.44 0.01
30 0.9667 6311.15 -0.07 959.00 0.05
31 0.9667 6310.58 -0.11 958.82 -0.05
32 0.9668 6308.60 -0.31 958.60 0.03
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.
15VS227 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 40.152 40.332 40.007 ecceobj 0.057 0.076 0.038 incobj 17.259 17.255 17.263 qmin 36.757 36.262 36.672 qmax 43.691 44.531 43.527 amean 40.105 40.280 39.972 amin 39.785 39.954 39.624 amax 40.429 40.609 40.330 emean 0.062 0.080 0.055 emin 0.047 0.064 0.027 emax 0.081 0.097 0.080 imean 18.282 18.240 18.142 imin 17.287 17.265 17.067 imax 19.092 19.055 19.119 excite_mean 0.320 0.323 0.316 fracstop 1.000 1.000 1.000 cjmean 2.937 2.937 2.939 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 183.4 182.2 184.5 kozaiamp 179.9 180.0 179.9