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: 14UM277 # Created Sat Apr 20 01:16:41 2024 # Orbit generated from Bernstein formalism # Fitting 18 observations of 18 # Arc: 3.99y # First observation: 2014/10/23 # Last observation: 2018/10/18 Preliminary a, adot, b, bdot, g, gdot: -0.000129 0.033064 0.000004 -0.001516 0.029407 0.000000 # Chi-squared of fit: 7.89 DOF: 30 RMS: 0.12 # Min/Max residuals: -0.24 0.28 # Exact a, adot, b, bdot, g, gdot: 1.907759E-05 3.231799E-02 -1.928992E-06 -1.474818E-03 2.673246E-02 -6.111539E-03 # Covariance matrix: 4.9897E-13 -2.5171E-13 -4.5245E-15 5.4024E-15 1.0295E-13 -8.0116E-13 -2.5171E-13 5.5605E-13 5.5114E-15 -2.3799E-14 6.5301E-13 4.2116E-12 -4.5245E-15 5.5114E-15 3.9549E-13 -1.2214E-13 -4.8384E-15 3.3545E-14 5.4024E-15 -2.3799E-14 -1.2214E-13 4.8110E-14 -3.3072E-14 -1.9947E-13 1.0295E-13 6.5301E-13 -4.8384E-15 -3.3072E-14 1.8664E-12 6.4439E-12 -8.0116E-13 4.2116E-12 3.3545E-14 -1.9947E-13 6.4439E-12 3.5898E-11 # lat0 lon0 xBary yBary zBary JD0 -2.734326 -0.358156 -0.494119 -0.041119 -0.864630 2456953.693748 # Heliocentric elements and errors Epoch: 2456950.5000 = 2014/10/20 Mean Anomaly: 350.56078 +/- 0.010 Argument of Peri: 257.01548 +/- 0.024 Long of Asc Node: 134.24739 +/- 0.005 Inclination: 3.70432 +/- 0.000 Eccentricity: 0.49199879 +/- 0.0003 Semi-Major Axis: 71.83244827 +/- 0.0388 Time of Perihelion: 2462781.0995 +/- 3.8 Perihelion: 36.49097038 +/- 0.0283 Aphelion: 107.17392617 +/- 0.0614 Period (y) 608.8204 +/- 0.49 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 38.23052486 +/- 0.0019 Ecliptic Y 0.25705087 +/- 0.0000 Ecliptic Z -1.78464767 +/- 0.0001 Ecliptic XDOT -0.00061617 +/- 0.0000 Ecliptic YDOT 0.00330900 +/- 0.0000 Ecliptic ZDOT -0.00012091 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.27302017 +/- 0.0019 Geocenter to KBO 37.40771069 +/- 0.0019 # Hcoef: 7.58
The following table shows the complete astrometric record for 14UM277. 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 (14UM277) followed by the observatory code and reference code for the source of the astrometry.
2014 10 23.19297 00 03 02.364 -02 39 03.57 23.5r 14UM277 W84 C~55Sg 2014 10 23.19436 00 03 02.373 -02 39 03.89 23.6g 14UM277 W84 C~55Sg 2014 11 15.10548 00 01 48.304 -02 46 10.81 23.2z 14UM277 W84 C~55Sg 2016 11 30.11061 00 15 09.610 -01 29 12.96 23.4r 14UM277 W84 C~55Sg 2016 11 30.11446 00 15 09.616 -01 29 12.54 23.2i 14UM277 W84 C~55Sg 2016 11 30.11584 00 15 09.595 -01 29 12.94 23.7g 14UM277 W84 C~55Sg 2016 12 19.05933 00 15 00.743 -01 28 51.46 23.2i 14UM277 W84 C~55Sg 2017 09 27.21439 00 26 06.754 -00 25 24.54 22.9i 14UM277 W84 C~55Sg 2017 09 27.21575 00 26 06.747 -00 25 24.44 23.0r 14UM277 W84 C~55Sg 2017 10 12.18913 00 24 56.408 -00 33 01.87 23.6g 14UM277 W84 C~55Sg 2017 10 27.16442 00 23 50.987 -00 39 47.47 23.1z 14UM277 W84 C~55Sg 2017 10 29.12934 00 23 43.096 -00 40 34.71 23.2i 14UM277 W84 C~55Sg 2017 11 09.06153 00 23 03.172 -00 44 26.33 23.2r 14UM277 W84 C~55Sg 2018 09 09.33142 00 34 41.556 +00 25 30.98 23.3r 14UM277 W84 C~55Sg 2018 09 09.33280 00 34 41.550 +00 25 31.01 23.0i 14UM277 W84 C~55Sg 2018 10 10.25683 00 32 18.326 +00 09 29.15 23.5r 14UM277 W84 C~55Sg 2018 10 10.25820 00 32 18.318 +00 09 29.03 23.5i 14UM277 W84 C~55Sg 2018 10 18.18917 00 31 41.651 +00 05 37.57 23.2z 14UM277 W84 C~55Sg
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 0.01 0.00 0.22
2 0.0000 -0.00 0.09 -0.35 -0.13
3 0.0627 -1188.03 -0.09 49.80 -0.24
4 2.1052 11680.49 -0.12 -509.57 -0.13
5 2.1052 11680.74 0.22 -509.22 0.21
6 2.1052 11680.29 -0.20 -509.46 -0.04
7 2.1571 11566.86 -0.00 -436.56 0.09
8 2.9296 22318.70 -0.10 -950.51 -0.07
9 2.9296 22318.64 -0.05 -950.38 0.07
10 2.9706 21155.92 0.00 -946.47 0.28
11 3.0116 20083.73 0.11 -924.63 -0.03
12 3.0169 19955.16 0.13 -920.45 0.01
13 3.0469 19307.88 0.05 -892.54 0.12
14 3.8799 30756.65 0.01 -1250.62 -0.13
15 3.8799 30756.58 0.04 -1250.56 -0.06
16 3.9646 28354.46 0.00 -1270.15 -0.05
17 3.9646 28354.30 -0.05 -1270.21 -0.11
18 3.9863 27746.58 -0.06 -1261.53 0.00
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.
14UM277 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 73.072 73.175 72.970 ecceobj 0.500 0.501 0.499 incobj 3.697 3.697 3.697 qmin 35.687 35.830 35.694 qmax 111.051 110.788 111.009 amean 72.117 72.214 72.146 amin 70.820 71.141 71.052 amax 73.713 73.658 73.745 emean 0.494 0.494 0.494 emin 0.482 0.484 0.483 emax 0.507 0.504 0.506 imean 2.598 2.469 2.804 imin 2.215 2.334 2.270 imax 2.970 2.628 3.419 excite_mean 0.496 0.495 0.496 fracstop 1.000 1.000 1.000 cjmean 3.106 3.108 3.106 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 199.2 189.7 176.8 kozaiamp 180.0 180.0 180.0