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: 15RZ278 # Created Tue Jan 21 02:10:40 2025 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 2.25y # First observation: 2015/06/23 # Last observation: 2017/09/22 Preliminary a, adot, b, bdot, g, gdot: -0.000092 0.039053 0.000017 0.008506 0.030011 0.000000 # Chi-squared of fit: 3.03 DOF: 52 RMS: 0.06 # Min/Max residuals: -0.16 0.13 # Exact a, adot, b, bdot, g, gdot: 2.033888E-05 3.805781E-02 4.698623E-06 8.344619E-03 2.937258E-02 4.501740E-03 # Covariance matrix: 2.0017E-13 -3.1222E-14 -2.8790E-15 1.2166E-14 1.3159E-13 8.5173E-13 -3.1222E-14 6.5563E-13 -4.1248E-14 1.7093E-13 3.4540E-13 1.1233E-11 -2.8790E-15 -4.1248E-14 1.2203E-13 -1.1228E-13 -2.4558E-14 -9.1461E-13 1.2166E-14 1.7093E-13 -1.1228E-13 1.9523E-13 1.0204E-13 3.7880E-12 1.3159E-13 3.4540E-13 -2.4558E-14 1.0204E-13 3.3385E-13 6.7683E-12 8.5173E-13 1.1233E-11 -9.1461E-13 3.7880E-12 6.7683E-12 2.4850E-10 # lat0 lon0 xBary yBary zBary JD0 -0.160963 10.369365 1.004983 0.000522 0.151427 2457197.098238 # Heliocentric elements and errors Epoch: 2457190.5000 = 2015/06/17 Mean Anomaly: 3.67443 +/- 0.016 Argument of Peri: 345.12976 +/- 0.063 Long of Asc Node: 9.40951 +/- 0.000 Inclination: 12.34710 +/- 0.001 Eccentricity: 0.53138257 +/- 0.0002 Semi-Major Axis: 71.59389666 +/- 0.0212 Time of Perihelion: 2454932.1029 +/- 9.7 Perihelion: 33.55014769 +/- 0.0165 Aphelion: 109.63764564 +/- 0.0351 Period (y) 605.7901 +/- 0.27 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.51758909 +/- 0.0007 Ecliptic Y 5.11261162 +/- 0.0001 Ecliptic Z -0.09542941 +/- 0.0000 Ecliptic XDOT -0.00022607 +/- 0.0000 Ecliptic YDOT 0.00355916 +/- 0.0000 Ecliptic ZDOT 0.00077669 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 33.90540787 +/- 0.0007 Geocenter to KBO 34.04535486 +/- 0.0007 # Hcoef: 8.83
The following table shows the complete astrometric record for 15RZ278. 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 (15RZ278) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.59746 00 38 22.411 +03 57 27.60 24.3r 15RZ278 568 C~2lVS 2015 07 14.54187 00 38 45.094 +04 01 34.10 24.3r 15RZ278 568 C~2lVS 2015 08 11.49525 00 38 04.460 +03 59 34.75 24.3r 15RZ278 568 C~2lVS 2015 08 11.53687 00 38 04.341 +03 59 34.28 24.2r 15RZ278 568 C~2lVS 2015 09 08.40090 00 36 16.276 +03 50 27.90 24.1r 15RZ278 568 C~2lVS 2015 09 08.50503 00 36 15.778 +03 50 25.14 23.9r 15RZ278 568 C~2lVS 2015 09 08.54864 00 36 15.569 +03 50 24.10 24.5r 15RZ278 568 C~2lVS 2015 09 09.52420 00 36 10.887 +03 49 59.39 24.2w 15RZ278 568 C~2lVS 2015 09 10.46510 00 36 06.343 +03 49 35.19 24.3w 15RZ278 568 C~2lVS 2015 10 03.37986 00 34 07.091 +03 38 52.93 24.4w 15RZ278 568 C~2lVS 2015 10 07.34557 00 33 45.825 +03 36 57.59 24.1r 15RZ278 568 C~2lVS 2015 10 07.36748 00 33 45.693 +03 36 56.94 24.3r 15RZ278 568 C~2lVS 2015 10 07.40358 00 33 45.494 +03 36 55.94 23.8r 15RZ278 568 C~2lVS 2015 11 07.24449 00 31 15.011 +03 23 33.52 24.5w 15RZ278 568 C~2lVS 2015 11 07.29726 00 31 14.790 +03 23 32.45 24.3w 15RZ278 568 C~2lVS 2015 12 07.32092 00 29 50.160 +03 17 03.93 24.4w 15RZ278 568 C~2lVS 2016 01 01.24995 00 29 50.610 +03 19 11.86 24.2w 15RZ278 568 C~2lVS 2016 09 05.53675 00 43 55.545 +05 10 58.64 24.2w 15RZ278 568 C~2lVS 2016 09 05.54080 00 43 55.521 +05 10 58.50 24.2w 15RZ278 568 C~2lVS 2016 09 07.47613 00 43 46.621 +05 10 12.88 24.2w 15RZ278 568 C~2lVS 2016 09 07.48017 00 43 46.598 +05 10 12.86 24.2w 15RZ278 568 C~2lVS 2016 09 07.52244 00 43 46.404 +05 10 11.84 24.7w 15RZ278 568 C~2lVS 2016 09 07.52648 00 43 46.379 +05 10 11.63 24.2w 15RZ278 568 C~2lVS 2016 09 26.55282 00 42 10.429 +05 01 47.49 24.3w 15RZ278 568 C~2lVS 2016 11 04.26545 00 38 52.960 +04 44 06.00 24.2w 15RZ278 568 C~2lVS 2016 11 04.32471 00 38 52.697 +04 44 04.64 24.4w 15RZ278 568 C~2lVS 2016 12 29.26158 00 37 05.517 +04 36 35.00 24.5w 15RZ278 568 C~2lVS 2017 01 03.23211 00 37 11.576 +04 37 33.16 24.5w 15RZ278 568 C~2lVS 2017 09 22.46739 00 50 01.805 +06 22 43.34 24.1w 15RZ278 568 C~2lVS
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 0.03 0.00 -0.04
2 0.0573 408.90 -0.16 93.65 -0.07
3 0.1339 -197.21 0.07 222.33 0.03
4 0.1340 -199.04 0.12 222.59 0.07
5 0.2103 -1900.95 -0.10 354.90 0.07
6 0.2106 -1908.89 -0.03 355.29 -0.10
7 0.2107 -1912.18 0.04 355.56 -0.07
8 0.2134 -1986.33 -0.01 360.36 0.05
9 0.2159 -2058.38 0.04 364.82 0.01
10 0.2787 -3952.55 0.00 475.97 0.03
11 0.2895 -4290.75 0.13 495.18 -0.07
12 0.2896 -4292.82 -0.05 495.36 -0.01
13 0.2897 -4295.95 -0.06 495.61 0.04
14 0.3741 -6684.66 0.01 645.28 0.00
15 0.3743 -6688.12 0.03 645.60 0.04
16 0.4565 -8007.65 0.01 788.30 -0.02
17 0.5247 -7950.92 -0.09 903.29 0.04
18 1.2045 6312.24 0.01 2110.51 0.04
19 1.2045 6311.85 -0.07 2110.52 0.03
20 1.2098 6171.50 -0.00 2120.42 -0.03
21 1.2098 6171.18 -0.02 2120.54 0.06
22 1.2099 6168.11 0.07 2120.73 0.01
23 1.2099 6167.68 -0.05 2120.68 -0.06
24 1.2620 4649.99 -0.03 2216.63 -0.02
25 1.3680 1517.78 0.05 2395.24 -0.00
26 1.3682 1513.63 0.09 2395.53 -0.00
27 1.5186 -136.81 0.03 2610.60 0.03
28 1.5322 -30.65 -0.09 2628.53 -0.06
29 2.2502 13039.40 0.01 3952.95 -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.
15RZ278 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 73.111 73.213 73.008 ecceobj 0.541 0.542 0.540 incobj 12.305 12.305 12.305 qmin 32.435 32.089 31.722 qmax 116.528 119.429 123.445 amean 72.133 73.330 72.911 amin 69.265 70.402 66.974 amax 75.268 76.437 78.230 emean 0.534 0.547 0.547 emin 0.505 0.522 0.502 emax 0.551 0.569 0.581 imean 12.627 11.651 10.626 imin 10.659 9.960 9.031 imax 14.034 12.819 12.818 excite_mean 0.577 0.583 0.578 fracstop 1.000 1.000 1.000 cjmean 2.971 2.969 2.971 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 163.8 156.5 162.7 kozaiamp 180.0 179.9 180.0