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: 15VT227 # Created Wed Mar 26 01:10:47 2025 # Orbit generated from Bernstein formalism # Fitting 33 observations of 33 # Arc: 0.97y # First observation: 2015/01/21 # Last observation: 2016/01/09 Preliminary a, adot, b, bdot, g, gdot: -0.000110 0.018095 0.000003 -0.007057 0.021947 0.000000 # Chi-squared of fit: 56.72 DOF: 60 RMS: 0.23 # Min/Max residuals: -0.61 1.39 # Exact a, adot, b, bdot, g, gdot: 1.400887E-05 1.832192E-02 -4.367815E-06 -7.135492E-03 2.226497E-02 1.606919E-03 # Covariance matrix: 1.9247E-13 2.3307E-13 5.7296E-15 -1.2927E-13 3.1461E-13 2.4225E-11 2.3307E-13 1.2859E-11 1.7909E-13 -2.5438E-12 4.5562E-12 5.8623E-10 5.7296E-15 1.7909E-13 1.1457E-13 -1.7810E-13 6.5976E-14 8.3980E-12 -1.2927E-13 -2.5438E-12 -1.7810E-13 8.5693E-13 -1.0606E-12 -1.2394E-10 3.1461E-13 4.5562E-12 6.5976E-14 -1.0606E-12 2.1140E-12 2.3007E-10 2.4225E-11 5.8623E-10 8.3980E-12 -1.2394E-10 2.3007E-10 2.8021E-08 # lat0 lon0 xBary yBary zBary JD0 -14.606086 140.044332 0.324529 -0.233563 -0.896930 2457043.963168 # Heliocentric elements and errors Epoch: 2457040.5000 = 2015/01/18 Mean Anomaly: 135.18106 +/- 3.350 Argument of Peri: 71.70749 +/- 3.288 Long of Asc Node: 287.29877 +/- 0.003 Inclination: 25.50498 +/- 0.002 Eccentricity: 0.11110726 +/- 0.0044 Semi-Major Axis: 42.25347711 +/- 0.0528 Time of Perihelion: 2419369.6473 +/- 931.0 Perihelion: 37.55880893 +/- 0.1912 Aphelion: 46.94814529 +/- 0.1944 Period (y) 274.6641 +/- 0.51 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.82085151 +/- 0.0022 Ecliptic Y 28.75534661 +/- 0.0018 Ecliptic Z -11.32617853 +/- 0.0007 Ecliptic XDOT -0.00142767 +/- 0.0000 Ecliptic YDOT -0.00175168 +/- 0.0000 Ecliptic ZDOT -0.00089880 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.81486959 +/- 0.0020 Geocenter to KBO 44.91360954 +/- 0.0029 # Hcoef: 7.94
The following table shows the complete astrometric record for 15VT227. 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 (15VT227) followed by the observatory code and reference code for the source of the astrometry.
2015 01 21.46239 09 11 33.66 +00 54 25.6 24.4i 15VT227 T09 C~8icU 2015 01 21.47876 09 11 33.60 +00 54 25.8 24.6i 15VT227 T09 C~8icU 2015 01 21.51165 09 11 33.44 +00 54 26.1 24.0i 15VT227 T09 C~8icU 2015 01 21.53196 09 11 33.35 +00 54 26.3 24.3i 15VT227 T09 C~8icU 2015 01 21.54636 09 11 33.30 +00 54 26.6 24.2i 15VT227 T09 C~8icU 2015 01 27.42004 09 11 07.28 +00 55 31.5 24.0y 15VT227 T09 C~8icU 2015 01 27.45834 09 11 07.12 +00 55 31.8 23.8y 15VT227 T09 C~8icU 2015 01 27.53242 09 11 06.87 +00 55 32.0 24.1y 15VT227 T09 C~8icU 2015 03 18.33529 09 07 40.36 +01 11 55.0 24.6r 15VT227 T09 C~8icU 2015 03 18.35031 09 07 40.30 +01 11 55.3 24.6r 15VT227 T09 C~8icU 2015 03 18.36332 09 07 40.26 +01 11 55.7 24.4r 15VT227 T09 C~8icU 2015 03 18.38297 09 07 40.19 +01 11 56.2 24.6r 15VT227 T09 C~8icU 2015 03 25.38568 09 07 19.43 +01 14 39.7 25.2g 15VT227 T09 C~8icU 2015 03 25.40010 09 07 19.39 +01 14 40.2 25.3g 15VT227 T09 C~8icU 2015 03 25.41076 09 07 19.36 +01 14 40.2 25.4g 15VT227 T09 C~8icU 2015 03 25.43008 09 07 19.31 +01 14 40.9 25.5g 15VT227 T09 C~8icU 2015 11 08.54855 09 17 50.38 +00 24 07.4 25.2r 15VT227 T09 C~8icU 2015 11 08.55427 09 17 50.38 +00 24 07.2 24.2r 15VT227 T09 C~8icU 2015 11 08.59330 09 17 50.41 +00 24 05.9 24.5r 15VT227 T09 C~8icU 2015 11 08.63991 09 17 50.42 +00 24 04.9 24.3r 15VT227 T09 C~8icU 2015 11 14.57872 09 17 52.53 +00 21 27.4 25.6g 15VT227 T09 C~8icU 2015 11 14.58440 09 17 52.53 +00 21 26.9 25.5g 15VT227 T09 C~8icU 2015 11 14.60004 09 17 52.53 +00 21 26.4 25.6g 15VT227 T09 C~8icU 2015 11 14.62376 09 17 52.53 +00 21 26.3 24.9g 15VT227 T09 C~8icU 2015 11 14.63646 09 17 52.53 +00 21 25.9 25.3g 15VT227 T09 C~8icU 2015 11 15.56997 09 17 52.57 +00 21 01.6 24.2z 15VT227 T09 C~8icU 2015 11 15.59979 09 17 52.58 +00 21 01.4 24.1z 15VT227 T09 C~8icU 2015 11 15.61872 09 17 52.57 +00 21 01.1 24.4z 15VT227 T09 C~8icU 2015 11 15.63493 09 17 52.56 +00 21 00.4 23.8z 15VT227 T09 C~8icU 2016 01 09.47070 09 15 54.73 +00 10 33.8 24.5y 15VT227 T09 C~8icU 2016 01 09.49531 09 15 54.65 +00 10 34.0 24.1y 15VT227 T09 C~8icU 2016 01 09.54463 09 15 54.45 +00 10 34.1 24.0y 15VT227 T09 C~8icU 2016 01 09.57457 09 15 54.34 +00 10 34.1 24.0y 15VT227 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 -0.21 0.00 -0.14
2 0.0000 -0.92 -0.04 -0.08 -0.05
3 0.0001 -3.29 -0.23 -0.53 -0.13
4 0.0002 -4.64 -0.22 -0.75 -0.12
5 0.0002 -5.45 -0.07 -0.69 0.09
6 0.0163 -396.90 -0.34 -57.89 0.18
7 0.0164 -399.28 -0.08 -58.33 0.09
8 0.0166 -402.91 1.39 -59.29 -0.19
9 0.1530 -3652.65 0.23 -67.04 0.10
10 0.1530 -3653.60 0.09 -67.03 0.00
11 0.1530 -3654.30 0.09 -66.83 0.10
12 0.1531 -3655.45 -0.01 -66.68 0.11
13 0.1723 -4001.91 -0.14 -5.78 -0.07
14 0.1723 -4002.63 -0.19 -5.49 0.09
15 0.1723 -4003.06 -0.11 -5.62 -0.14
16 0.1724 -4003.99 -0.14 -5.19 0.11
17 0.7970 5937.38 0.01 -7.45 0.14
18 0.7970 5937.44 -0.02 -7.64 0.09
19 0.7971 5938.26 0.16 -8.74 -0.09
20 0.7972 5938.71 -0.14 -9.65 0.12
21 0.8135 6016.99 -0.04 -150.03 0.27
22 0.8135 6017.14 0.06 -150.51 -0.07
23 0.8135 6017.30 0.09 -150.98 -0.17
24 0.8136 6017.33 -0.07 -151.08 0.30
25 0.8136 6017.45 -0.05 -151.46 0.23
26 0.8162 6025.45 0.02 -174.43 -0.61
27 0.8163 6025.65 0.02 -174.57 -0.04
28 0.8163 6025.60 -0.16 -174.90 0.08
29 0.8164 6025.67 -0.19 -175.62 -0.24
30 0.9665 4532.83 -0.13 -1312.03 -0.11
31 0.9666 4531.63 0.10 -1312.21 0.09
32 0.9667 4528.74 0.07 -1313.03 0.02
33 0.9668 4527.17 0.24 -1313.53 -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.
15VT227 quality flag:2 Type: SCATEXTD SCATNEAR SCATEXTD axisobj 42.092 42.279 41.943 ecceobj 0.118 0.130 0.108 incobj 25.523 25.522 25.525 qmin 36.523 34.068 36.785 qmax 47.886 51.137 47.346 amean 42.085 42.323 41.943 amin 41.758 41.854 41.607 amax 42.449 42.835 42.300 emean 0.110 0.143 0.105 emin 0.092 0.097 0.090 emax 0.129 0.196 0.120 imean 27.229 26.924 27.175 imin 26.788 25.975 26.868 imax 27.681 27.780 27.575 excite_mean 0.471 0.475 0.469 fracstop 1.000 1.000 1.000 cjmean 2.805 2.803 2.806 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 177.3 208.9 173.9 kozaiamp 180.0 180.0 180.0