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: 12GV1 # Created Fri Apr 26 01:14:01 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 29 observations of 29 # Arc: 10.58y # First observation: 2010/01/12 # Last observation: 2020/08/12 # Chi-squared of fit: 63.79 DOF: 52 RMS: 0.26 # Min/Max residuals: -0.76 0.68 # Exact a, adot, b, bdot, g, gdot: 4.045077E-05 3.465907E-01 1.577038E-05 1.150301E-01 1.340117E-01 2.163241E-02 # Covariance matrix: 9.8887E-10 -8.3206E-07 1.0289E-09 -5.9980E-08 -4.3286E-10 -7.5763E-07 -8.3206E-07 1.4219E-03 -8.4470E-07 9.4669E-05 3.5484E-07 1.2950E-03 1.0289E-09 -8.4470E-07 1.0721E-09 -6.1330E-08 -4.5085E-10 -7.6914E-07 -5.9980E-08 9.4669E-05 -6.1330E-08 1.3507E-05 2.5682E-08 8.6621E-05 -4.3286E-10 3.5484E-07 -4.5085E-10 2.5682E-08 1.8968E-10 3.2309E-07 -7.5763E-07 1.2950E-03 -7.6914E-07 8.6621E-05 3.2309E-07 1.1854E-03 # lat0 lon0 xBary yBary zBary JD0 -7.487257 152.931102 0.645336 -0.097427 -0.741270 2455208.959206 # Heliocentric elements and errors Epoch: 2455208.5000 = 2010/01/12 Mean Anomaly: 359.54394 +/- 0.001 Argument of Peri: 340.54156 +/- 0.000 Long of Asc Node: 168.66039 +/- 0.000 Inclination: 18.97757 +/- 0.000 Eccentricity: 0.55005674 +/- 0.0000 Semi-Major Axis: 18.27560579 +/- 0.0000 Time of Perihelion: 2455244.6515 +/- 0.1 Perihelion: 8.22298562 +/- 0.0001 Aphelion: 28.32822595 +/- 0.0001 Period (y) 78.1296 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -6.95644206 +/- 0.0000 Ecliptic Y 4.27847996 +/- 0.0000 Ecliptic Z -0.97222995 +/- 0.0000 Ecliptic XDOT -0.00388219 +/- 0.0000 Ecliptic YDOT -0.00596086 +/- 0.0000 Ecliptic ZDOT 0.00227236 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 8.22452234 +/- 0.0000 Geocenter to KBO 7.46204605 +/- 0.0000 # Hcoef: 11.83
The following table shows the complete astrometric record for 12GV1. 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 (12GV1) followed by the observatory code and reference code for the source of the astrometry.
2010 01 12.45844 10 08 44.34 +03 26 06.1 22.0V 12GV1 G96 C~0gNX 2010 01 12.46561 10 08 44.26 +03 26 06.8 21.9V 12GV1 G96 C~0gNX 2010 01 12.47287 10 08 44.23 +03 26 07.6 20.9V 12GV1 G96 C~0gNX 2010 01 12.48013 10 08 44.12 +03 26 08.5 20.9V 12GV1 G96 C~0gNX 2011 03 05.39920 11 20 56.36 +04 14 55.5 20.5V 12GV1 G96 C~0gNX 2011 03 05.39995 11 20 56.36 +04 14 55.8 20.9V 12GV1 G96 C~0gNX 2011 03 05.40594 11 20 56.29 +04 14 56.9 20.5V 12GV1 G96 C~0gNX 2011 03 05.40667 11 20 56.25 +04 14 57.3 20.8V 12GV1 G96 C~0gNX 2011 03 05.41271 11 20 56.11 +04 14 58.2 21.3V 12GV1 G96 C~0gNX 2011 03 05.41347 11 20 56.14 +04 14 57.9 20.9V 12GV1 G96 C~0gNX 2011 03 05.42019 11 20 56.07 +04 14 59.2 20.7V 12GV1 G96 C~0gNX 2012 02 26.30144 12 40 04.76 +02 18 48.0 20.9V 12GV1 691 C~0gNX 2012 02 26.31938 12 40 04.55 +02 18 50.9 21.4V 12GV1 691 C~0gNX 2012 02 26.33732 12 40 04.39 +02 18 53.3 21.1V 12GV1 691 C~0gNX 2012 03 29.35551 12 32 34.58 +03 46 32.8 21.1V 12GV1 G96 C~0g7v 2012 03 29.36127 12 32 34.44 +03 46 34.4 21.4V 12GV1 G96 C~0g7v 2012 03 29.36712 12 32 34.36 +03 46 35.2 21.1V 12GV1 G96 C~0g7v 2012 03 29.37294 12 32 34.26 +03 46 36.0 20.6V 12GV1 G96 C~0g7v 2012 04 12.33925 12 29 01.633 +04 21 23.09 21.3w 12GV1 F51 C~0fkn 2012 04 12.35319 12 29 01.425 +04 21 24.97 21.6w 12GV1 F51 C~0fkn 2012 04 12.36714 12 29 01.216 +04 21 27.07 21.8w 12GV1 F51 C~0fkn 2012 04 12.38115 12 29 00.994 +04 21 28.87 21.6w 12GV1 F51 C~0fkn 2012 04 13.28596 12 28 47.87 +04 23 32.5 21.3R 12GV1 291 C~0fkn 2012 04 13.31808 12 28 47.39 +04 23 36.8 21.3R 12GV1 291 C~0fkn 2012 04 13.35648 12 28 46.81 +04 23 42.1 21.1R 12GV1 291 C~0fkn 2016 05 29.35286 15 46 47.221 -00 26 37.08 22.2R 12GV1 G37 C~2bmL 2016 05 29.40562 15 46 46.495 -00 26 35.53 12GV1 G37 C~2bmL 2020 08 12.163120 17 22 41.613 -03 39 38.68 23.9G 12GV1 G37 C~43zJ 2020 08 12.203470 17 22 41.421 -03 39 41.18 12GV1 G37 C~43zJ
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 -0.08 0.00 -0.46
2 0.0000 0.00 -0.16 0.00 -0.34
3 0.0000 0.00 0.52 0.00 -0.14
4 0.0001 0.00 0.00 0.00 0.17
5 1.1415 0.00 -0.33 0.00 -0.18
6 1.1415 0.00 -0.15 0.00 -0.01
7 1.1415 0.00 0.27 0.00 0.05
8 1.1415 0.00 -0.15 0.00 0.32
9 1.1416 0.00 -0.76 0.00 0.17
10 1.1416 0.00 -0.13 0.00 -0.26
11 1.1416 0.00 0.47 0.00 -0.13
12 2.1214 0.00 -0.34 0.00 0.28
13 2.1215 0.00 -0.47 0.00 0.37
14 2.1215 0.00 0.15 0.00 -0.05
15 2.2092 0.00 0.68 0.00 -0.46
16 2.2092 0.00 -0.03 0.00 0.23
17 2.2092 0.00 0.17 0.00 0.09
18 2.2092 0.00 0.06 0.00 -0.03
19 2.2474 0.00 0.27 0.00 -0.01
20 2.2475 0.00 0.28 0.00 -0.05
21 2.2475 0.00 0.28 0.00 0.13
22 2.2476 0.00 0.10 0.00 -0.00
23 2.2500 0.00 -0.00 0.00 0.09
24 2.2501 0.00 -0.07 0.00 0.03
25 2.2502 0.00 -0.27 0.00 0.12
26 6.3762 0.00 -0.16 0.00 0.12
27 6.3763 0.00 -0.12 0.00 -0.24
28 10.5810 0.00 0.13 0.00 -0.17
29 10.5811 0.00 -0.06 0.00 -0.26
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.
12GV1 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 18.417 18.417 18.417 ecceobj 0.551 0.551 0.551 incobj 18.938 18.938 18.938 qmin 8.044 8.200 8.060 qmax 28.730 28.557 28.558 amean 17.154 16.794 16.713 amin 15.678 15.826 15.765 amax 18.486 18.417 18.417 emean 0.519 0.497 0.509 emin 0.478 0.448 0.471 emax 0.555 0.551 0.551 imean 18.741 18.978 18.509 imin 17.672 18.224 17.096 imax 21.130 20.413 20.416 excite_mean 0.611 0.594 0.600 fracstop 0.003 0.003 0.003 cjmean 2.982 3.022 3.020 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 97.7 104.6 95.1 kozaiamp 179.2 178.8 177.9