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: 10BL4 # Created Fri Nov 22 02:09:04 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 28 observations of 28 # Arc: 5.26y # First observation: 2010/01/18 # Last observation: 2015/04/22 # Chi-squared of fit: 37.79 DOF: 50 RMS: 0.21 # Min/Max residuals: -0.44 0.50 # Exact a, adot, b, bdot, g, gdot: 4.429473E-05 3.430846E-01 -2.991419E-06 -1.564677E-02 1.297178E-01 2.614867E-02 # Covariance matrix: 1.4690E-13 -8.4283E-14 -5.4332E-15 9.3853E-16 8.3423E-14 -3.3414E-14 -8.4283E-14 2.9442E-13 2.2196E-15 -2.3667E-14 1.0609E-13 5.8158E-14 -5.4332E-15 2.2196E-15 9.0446E-14 -1.8882E-14 -1.1724E-14 2.8063E-15 9.3853E-16 -2.3667E-14 -1.8882E-14 1.0747E-14 -2.0090E-14 -2.6874E-15 8.3423E-14 1.0609E-13 -1.1724E-14 -2.0090E-14 3.1316E-13 -2.9828E-14 -3.3414E-14 5.8158E-14 2.8063E-15 -2.6874E-15 -2.9828E-14 2.1469E-14 # lat0 lon0 xBary yBary zBary JD0 -23.092252 129.182305 0.194689 -0.379927 -0.891181 2455214.566736 # Heliocentric elements and errors Epoch: 2455214.5000 = 2010/01/18 Mean Anomaly: 2.16226 +/- 0.050 Argument of Peri: 252.85406 +/- 0.000 Long of Asc Node: 227.05765 +/- 0.000 Inclination: 20.81690 +/- 0.000 Eccentricity: 0.53651115 +/- 0.0005 Semi-Major Axis: 18.49820601 +/- 0.0000 Time of Perihelion: 2455039.9590 +/- 4.0 Perihelion: 8.57371223 +/- 0.0097 Aphelion: 28.42269979 +/- 0.0097 Period (y) 79.5614 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -4.93786579 +/- 0.0000 Ecliptic Y 6.36768247 +/- 0.0001 Ecliptic Z -3.02365962 +/- 0.0000 Ecliptic XDOT -0.00584903 +/- 0.0000 Ecliptic YDOT -0.00427619 +/- 0.0000 Ecliptic ZDOT -0.00052031 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 8.60651694 +/- 0.0001 Geocenter to KBO 7.70903995 +/- 0.0001 # Hcoef: 12.03
The following table shows the complete astrometric record for 10BL4. 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 (10BL4) followed by the observatory code and reference code for the source of the astrometry.
2010 01 18.06597 08 22 36.520 -04 22 16.89 21.0R 10BL4 809 C~0DYC 2010 01 18.15020 08 22 35.004 -04 22 14.95 20.9R 10BL4 809 C~0DYC 2010 01 18.23414 08 22 33.462 -04 22 13.36 21.0R 10BL4 809 C~0DYC 2010 01 20.25673 08 21 57.16 -04 21 20.3 10BL4 807 C~0DYC 2010 01 21.19525 08 21 40.25 -04 20 51.40 20.8R 10BL4 807 C~0DYC 2010 01 21.22139 08 21 39.75 -04 20 50.30 21.2R 10BL4 807 C~0DYC 2010 01 21.25447 08 21 39.16 -04 20 49.15 10BL4 807 C~0DYC 2010 02 14.21441 08 14 45.09 -03 52 54.77 10BL4 807 C~0Dxq 2010 02 14.25966 08 14 44.37 -03 52 50.37 10BL4 807 C~0Dxq 2010 03 22.05325 08 09 00.065 -02 37 31.21 21.5R 10BL4 807 C~0Fnl 2010 03 22.10609 08 08 59.947 -02 37 24.01 21.2R 10BL4 807 C~0Fnl 2010 04 20.18850 08 10 56.40 -01 37 59.3 21.1R 10BL4 688 C~0GWt 2010 04 20.20755 08 10 56.59 -01 37 57.6 10BL4 688 C~0GWt 2011 01 10.45020 09 37 38.36 -09 41 57.0 21.1R 10BL4 695 C~0Ut9 2011 01 10.45873 09 37 38.24 -09 41 57.1 10BL4 695 C~0Ut9 2011 01 10.50754 09 37 37.61 -09 41 58.8 10BL4 695 C~0Ut9 2011 03 10.15660 09 22 23.30 -08 33 01.7 21.2R 10BL4 688 C~0Ut9 2011 03 10.21716 09 22 22.51 -08 32 53.1 10BL4 688 C~0Ut9 2012 03 29.22081 10 25 55.19 -12 06 36.9 21.7R 10BL4 688 C~0fFC 2012 03 29.27067 10 25 54.61 -12 06 28.6 10BL4 688 C~0fFC 2015 04 19.11769 12 59 09.48 -17 28 36.6 23.0V 10BL4 W84 C~1Qdl 2015 04 19.12085 12 59 09.44 -17 28 36.2 10BL4 W84 C~1Qdl 2015 04 19.12732 12 59 09.36 -17 28 35.4 10BL4 W84 C~1Qdl 2015 04 19.13050 12 59 09.31 -17 28 35.0 10BL4 W84 C~1Qdl 2015 04 22.11936 12 58 29.72 -17 22 23.7 23.2V 10BL4 W84 C~1Qdl 2015 04 22.12259 12 58 29.67 -17 22 23.5 10BL4 W84 C~1Qdl 2015 04 22.12907 12 58 29.58 -17 22 22.5 10BL4 W84 C~1Qdl 2015 04 22.13224 12 58 29.53 -17 22 22.2 10BL4 W84 C~1Qdl
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 -0.44 0.00 0.34
2 0.0002 0.00 -0.16 0.00 0.43
3 0.0005 0.00 -0.24 0.00 0.14
4 0.0060 0.00 0.29 0.00 0.12
5 0.0086 0.00 -0.01 0.00 -0.38
6 0.0086 0.00 -0.27 0.00 -0.14
7 0.0087 0.00 0.03 0.00 -0.09
8 0.0743 0.00 0.03 0.00 -0.19
9 0.0745 0.00 -0.03 0.00 -0.41
10 0.1724 0.00 -0.02 0.00 0.11
11 0.1726 0.00 0.50 0.00 0.16
12 0.2522 0.00 0.24 0.00 0.06
13 0.2523 0.00 0.18 0.00 -0.20
14 0.9785 0.00 0.39 0.00 -0.18
15 0.9785 0.00 0.23 0.00 -0.01
16 0.9786 0.00 0.14 0.00 -0.17
17 1.1392 0.00 -0.41 0.00 0.25
18 1.1394 0.00 -0.20 0.00 -0.08
19 2.1934 0.00 -0.05 0.00 0.04
20 2.1936 0.00 -0.03 0.00 0.22
21 5.2486 0.00 -0.14 0.00 0.01
22 5.2486 0.00 -0.09 0.00 0.03
23 5.2486 0.00 0.04 0.00 0.03
24 5.2486 0.00 -0.06 0.00 0.04
25 5.2568 0.00 0.18 0.00 0.03
26 5.2568 0.00 0.08 0.00 -0.17
27 5.2568 0.00 0.03 0.00 0.02
28 5.2569 0.00 -0.08 0.00 -0.08
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.
10BL4 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 18.680 18.680 18.681 ecceobj 0.538 0.538 0.538 incobj 20.773 20.773 20.773 qmin 8.450 8.258 8.269 qmax 29.048 29.812 30.002 amean 18.400 18.203 18.638 amin 18.047 16.715 18.105 amax 18.901 19.170 19.153 emean 0.532 0.538 0.550 emin 0.518 0.503 0.536 emax 0.546 0.556 0.566 imean 21.657 21.228 20.943 imin 21.202 20.768 20.540 imax 22.296 22.355 21.593 excite_mean 0.647 0.649 0.656 fracstop 0.003 0.003 0.002 cjmean 2.873 2.882 2.848 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 282.2 281.9 274.7 kozaiamp 27.3 25.5 21.1