Orbit Fit and Astrometric record for 07UM126

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: 07UM126   
# Created Fri Dec 15 02:37:29 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   71 observations of   72
# Arc:   8.16y
# First observation: 2001/07/28
#  Last observation: 2009/09/26
# Chi-squared of fit:   149.65 DOF:  136 RMS:  0.26
# Min/Max residuals:    -0.61    1.00
# Exact a, adot, b, bdot, g, gdot:
  3.900299E-05  3.082018E-01  2.646476E-06  2.355086E-02  1.256766E-01 -3.954433E-02
# Covariance matrix:
  5.1150E-11 -1.0382E-11 -2.0457E-11  6.3349E-13 -2.0638E-11  1.6499E-12
 -1.0382E-11  1.1262E-09  4.1529E-12 -1.4416E-10  4.1836E-12 -1.3925E-10
 -2.0457E-11  4.1529E-12  8.8838E-12 -3.8778E-13  8.3528E-12 -6.6964E-13
  6.3349E-13 -1.4416E-10 -3.8778E-13  9.5001E-10 -2.5724E-13  7.8374E-11
 -2.0638E-11  4.1836E-12  8.3528E-12 -2.5724E-13  8.4268E-12 -6.7230E-13
  1.6499E-12 -1.3925E-10 -6.6964E-13  7.8374E-11 -6.7230E-13  7.5624E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   45.836839  -90.845168   -0.594354    0.592989   -0.576128  2452118.700963
# Heliocentric elements and errors
Epoch:              2452118.5000  =  2001/07/28
Mean Anomaly:          353.25140 +/-     0.000
Argument of Peri:      104.06080 +/-     0.000
Long of Asc Node:      184.91730 +/-     0.000
Inclination:            41.76167 +/-     0.000
Eccentricity:         0.33672620 +/-    0.0000
Semi-Major Axis:     12.81952190 +/-    0.0000
Time of Perihelion: 2452432.7802 +/-       0.0
Perihelion:           8.50285306 +/-    0.0000
Aphelion:            17.13619074 +/-    0.0000
Period (y)               45.9003 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            0.50352606 +/-    0.0000
Ecliptic Y           -6.37297726 +/-    0.0000
Ecliptic Z            5.70802732 +/-    0.0000
Ecliptic XDOT         0.00671911 +/-    0.0000
Ecliptic YDOT         0.00087071 +/-    0.0000
Ecliptic ZDOT        -0.00026033 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    8.57031410 +/-    0.0000
Geocenter to KBO      7.95701828 +/-    0.0000
# Hcoef: 10.06

The following table shows the complete astrometric record for 07UM126. 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 (07UM126) followed by the observatory code and reference code for the source of the astrometry.

2001 07  28.20022  17 57 27.15   +22 23 57.9   20.2  07UM126   644  Cx9539      
2001 07  28.21142  17 57 27.01   +22 23 56.0   20.0  07UM126   644  Cx9539      
2001 07  28.22320  17 57 26.84   +22 23 53.9   19.8  07UM126   644  Cx9539      
2004 08  15.96102  21 41 19.75   +16 33 51.4   19.5R 07UM126   246  C~05GI      
2004 08  15.96556  21 41 19.64   +16 33 51.1         07UM126   246  C~05GI      
2004 08  15.96947  21 41 19.60   +16 33 50.9         07UM126   246  C~05GI      
2006 08  21.33119  23 40 11.73   +07 42 13.4   20.2V 07UM126   691  Cx9539      
2006 08  21.34853  23 40 11.53   +07 42 11.2   20.3V 07UM126   691  Cx9539      
2006 08  21.36588  23 40 11.26   +07 42 08.7   20.4V 07UM126   691  Cx9539      
2006 10  23.09473  23 25 22.74   +04 22 30.8   20.5V 07UM126   691  Cx9539      
2006 10  23.10768  23 25 22.61   +04 22 28.6   20.5V 07UM126   691  Cx9539      
2006 10  23.12064  23 25 22.48   +04 22 25.9   20.5V 07UM126   691  Cx9539      
2007 09  10.37887  00 24 11.30   +02 41 09.9   20.4V 07UM126   G96  Cx9539      
2007 09  10.38701  00 24 11.19   +02 41 08.6   20.4V 07UM126   G96  Cx9539      
2007 09  10.39512  00 24 11.08   +02 41 07.3   20.5V 07UM126   G96  Cx9539      
2007 09  10.40316  00 24 10.94   +02 41 05.7   20.3V 07UM126   G96  Cx9539      
2007 10  07.24221  00 17 31.81   +01 19 29.6   20.5V 07UM126   G96  Cx9539      
2007 10  07.24771  00 17 31.70   +01 19 28.6   20.4V 07UM126   G96  Cx9539      
2007 10  07.25321  00 17 31.63   +01 19 27.6   20.2V 07UM126   G96  Cx9539      
2007 10  07.25872  00 17 31.56   +01 19 26.6   20.4V 07UM126   G96  Cx9539      
2007 10  14.33311  00 15 48.77   +00 58 22.0   20.5  07UM126   705  cx9539      
2007 10  14.33394  00 15 48.75   +00 58 21.9   21.1  07UM126   705  cx9539      
2007 10  19.24090  00 14 41.17   +00 44 13.7   20.3V 07UM126   G96  Cx9539      
2007 10  19.24633  00 14 41.10   +00 44 12.4   20.8V 07UM126   G96  Cx9539      
2007 10  19.25177  00 14 41.02   +00 44 11.4   20.5V 07UM126   G96  Cx9539      
2007 10  19.25721  00 14 40.95   +00 44 10.8   20.5V 07UM126   G96  Cx9539      
2007 10  20.31641  00 14 26.82   +00 41 11.7   20.8  07UM126   705  cx9539      
2007 10  20.31724  00 14 26.82   +00 41 11.6   21.6  07UM126   705  cx9539      
2007 10  30.24376  00 12 25.25   +00 14 34.4   20.8  07UM126   705  cx9539      
2007 10  30.24612  00 12 25.23   +00 14 34.0   20.6V 07UM126   G96  Cx9539      
2007 10  30.24625  00 12 25.22   +00 14 34.0   21.5  07UM126   705  cx9539      
2007 10  30.25441  00 12 25.12   +00 14 32.7   20.8V 07UM126   G96  Cx9539      
2007 10  30.26267  00 12 25.09   +00 14 31.5   20.7V 07UM126   G96  Cx9539      
2007 10  30.27097  00 12 24.98   +00 14 30.3   20.3V 07UM126   G96  Cx9539      
2007 11  04.23743  00 11 32.46   +00 02 15.6   20.7  07UM126   705  cx9539      
2007 11  04.24075  00 11 32.43   +00 02 15.1   21.4  07UM126   705  cx9539      
2007 11  05.17943  00 11 23.24   +00 00 01.4   20.1V 07UM126   G96  Cx9539      
2007 11  05.18693  00 11 23.17   +00 00 00.5   20.3V 07UM126   G96  Cx9539      
2007 11  05.19442  00 11 23.10   -00 00 00.5   20.2V 07UM126   G96  Cx9539      
2007 11  05.20197  00 11 23.02   -00 00 01.5   20.0V 07UM126   G96  Cx9539      
2007 11  05.24088  00 11 22.62   -00 00 07.1   20.8  07UM126   705  cx9539      
2007 11  05.24420  00 11 22.59   -00 00 07.6   21.5  07UM126   705  cx9539      
2007 11  08.23864  00 10 54.85   -00 07 00.6   20.8  07UM126   705  cx9539      
2007 11  08.24196  00 10 54.83   -00 07 01.0   21.6  07UM126   705  cx9539      
2007 11  11.24724  00 10 29.56   -00 13 36.0   20.7  07UM126   705  cx9539      
2007 11  11.25056  00 10 29.52   -00 13 36.5   21.4  07UM126   705  cx9539      
2007 11  13.23721  00 10 14.30   -00 17 46.5   20.8  07UM126   705  cx9539      
2007 11  13.24053  00 10 14.27   -00 17 46.9   21.5  07UM126   705  cx9539      
2007 11  14.23541  00 10 07.10   -00 19 48.6   20.8  07UM126   705  cx9539      
2007 11  14.23873  00 10 07.08   -00 19 49.1   21.5  07UM126   705  cx9539      
2007 11  17.23947  00 09 47.31   -00 25 42.1   20.8  07UM126   705  cx9539      
2007 11  17.24279  00 09 47.28   -00 25 42.5   21.5  07UM126   705  cx9539      
2007 11  19.21597  00 09 35.86   -00 29 22.8   21.0  07UM126   705  cx9539      
2007 11  19.21680  00 09 35.87   -00 29 22.9   21.9  07UM126   705  cx9539      
2008 08  27.05644  01 09 01.87   -00 19 32.4   20. R 07UM126   461  Cz4573      
2008 08  27.07090  01 09 01.75   -00 19 34.1         07UM126   461  Cz4573      
2008 09  04.36429  01 07 41.36   -00 41 53.9   20.6V 07UM126   691  Cz5251      
2008 09  04.38187  01 07 41.17   -00 41 57.0   20.6V 07UM126   691  Cz5251      
2008 09  04.39942  01 07 40.96   -00 41 59.8   20.6V 07UM126   691  Cz5251      
2008 10  02.39800  01 01 33.96   -02 01 54.1   20.4V 07UM126   G96  Cz8031      
2008 10  02.40553  01 01 33.81   -02 01 55.4   20.5V 07UM126   G96  Cz8031      
2008 10  02.41306  01 01 33.67   -02 01 56.7   20.3V 07UM126   G96  Cz8031      
2008 10  02.42072  01 01 33.56   -02 01 58.1   20.7V 07UM126   G96  Cz8031      
2008 10  22.87905  00 56 35.07   -02 56 17.9   21. R 07UM126   461  C~00Aa      
2008 10  22.88644  00 56 34.95   -02 56 18.7         07UM126   461  C~00Aa      
2008 10  22.89384  00 56 34.84   -02 56 20.3         07UM126   461  C~00Aa      
2008 11  20.274700 00 51 07.48   -03 51 26.4   20.7V 07UM126   645  C~1Sga      
2008 11  20.275529 00 51 07.47   -03 51 26.5   20.6V 07UM126   645  C~1Sga      
2008 11  20.278017 00 51 07.45   -03 51 26.7   21.4V 07UM126   645  C~1Sga      
2009 09  26.08863  01 41 04.757  -04 49 32.03  21.2V 07UM126   950  C~0C8N      
2009 09  26.09571  01 41 04.676  -04 49 33.16  20.9V 07UM126   950  C~0C8N      
2009 09  26.10279  01 41 04.568  -04 49 34.64  21.0V 07UM126   950  C~0C8N      

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 (  -0.55)      0.00 (  -6.91)
  2   0.0000      0.00     0.26       0.00     0.22
  3   0.0001      0.00     0.08       0.00     0.16
  4   3.0520      0.00     0.45       0.00    -0.24
  5   3.0521      0.00     0.01       0.00     0.21
  6   3.0521      0.00     0.44       0.00     0.66
  7   5.0654      0.00    -0.04       0.00    -0.13
  8   5.0654      0.00     0.46       0.00     0.27
  9   5.0655      0.00    -0.08       0.00     0.38
 10   5.2372      0.00    -0.04       0.00     0.28
 11   5.2373      0.00    -0.01       0.00     0.54
 12   5.2373      0.00     0.03       0.00     0.31
 13   6.1196      0.00     0.04       0.00    -0.00
 14   6.1196      0.00     0.13       0.00     0.13
 15   6.1196      0.00     0.22       0.00     0.26
 16   6.1197      0.00    -0.16       0.00     0.08
 17   6.1931      0.00     0.25       0.00    -0.31
 18   6.1931      0.00    -0.15       0.00    -0.31
 19   6.1932      0.00     0.06       0.00    -0.32
 20   6.1932      0.00     0.26       0.00    -0.32
 21   6.2125      0.00     0.24       0.00     0.10
 22   6.2125      0.00     0.12       0.00     0.15
 23   6.2260      0.00     0.25       0.00     0.16
 24   6.2260      0.00     0.32       0.00    -0.22
 25   6.2260      0.00     0.24       0.00    -0.30
 26   6.2260      0.00     0.31       0.00     0.03
 27   6.2289      0.00     0.12       0.00     0.08
 28   6.2289      0.00     0.29       0.00     0.12
 29   6.2561      0.00     0.10       0.00     0.06
 30   6.2561      0.00     0.14       0.00     0.02
 31   6.2561      0.00     0.07       0.00     0.04
 32   6.2561      0.00    -0.08       0.00    -0.01
 33   6.2562      0.00     0.89       0.00     0.05
 34   6.2562      0.00     0.67       0.00     0.11
 35   6.2698      0.00     0.09       0.00     0.19
 36   6.2698      0.00     0.15       0.00     0.17
 37   6.2724      0.00     0.12       0.00    -0.10
 38   6.2724      0.00     0.19       0.00     0.06
 39   6.2724      0.00     0.27       0.00     0.12
 40   6.2724      0.00     0.20       0.00     0.19
 41   6.2725      0.00     0.09       0.00     0.08
 42   6.2725      0.00     0.14       0.00     0.05
 43   6.2807      0.00    -0.05       0.00     0.09
 44   6.2807      0.00     0.11       0.00     0.14
 45   6.2890      0.00     0.08       0.00     0.16
 46   6.2890      0.00    -0.11       0.00     0.08
 47   6.2944      0.00    -0.01       0.00     0.04
 48   6.2944      0.00    -0.08       0.00     0.05
 49   6.2972      0.00    -0.03       0.00     0.09
 50   6.2972      0.00     0.03       0.00    -0.00
 51   6.3054      0.00    -0.05       0.00     0.06
 52   6.3054      0.00    -0.18       0.00     0.03
 53   6.3108      0.00    -0.12       0.00     0.11
 54   6.3108      0.00     0.10       0.00     0.10
 55   7.0824      0.00    -0.05       0.00     0.03
 56   7.0825      0.00     0.08       0.00     0.60
 57   7.1052      0.00    -0.40       0.00     0.31
 58   7.1052      0.00    -0.35       0.00     0.12
 59   7.1053      0.00    -0.61       0.00     0.23
 60   7.1819      0.00     1.00       0.00     0.75
 61   7.1819      0.00     0.43       0.00     0.72
 62   7.1820      0.00     0.02       0.00     0.70
 63   7.1820      0.00     0.09       0.00     0.60
 64   7.2380      0.00     0.19       0.00    -0.21
 65   7.2380      0.00    -0.04       0.00     0.07
 66   7.2380      0.00    -0.11       0.00    -0.45
 67   7.3157      0.00     0.59       0.00    -0.00
 68   7.3157      0.00     0.55       0.00    -0.04
 69   7.3158      0.00     0.57       0.00    -0.03
 70   8.1640      0.00     0.24       0.00     0.42
 71   8.1640      0.00     0.41       0.00     0.47
 72   8.1640      0.00     0.18       0.00     0.16

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.

07UM126    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        12.841    12.841    12.841
ecceobj         0.338     0.338     0.338
incobj         41.768    41.768    41.768
qmin            8.271     8.271     8.271
qmax           17.669    21.628    17.720
amean          12.824    14.484    12.949
amin           12.071    12.721    12.835
amax           13.041    15.485    13.270
emean           0.324     0.363     0.342
emin            0.234     0.292     0.328
emax            0.360     0.402     0.360
imean          41.642    41.097    41.197
imin           40.853    40.091    40.854
imax           43.873    42.399    41.536
excite_mean     0.740     0.751     0.742
fracstop        0.004     0.015     0.004
cjmean          3.278     3.061     3.260

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       105.6     120.3     105.8
kozaiamp          9.4      26.2      10.2