Orbit Fit and Astrometric record for 10GW147

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: 10GW147   
# Created Wed Dec 13 02:37:35 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   43 observations of   88
# Arc:  10.85d
# First observation: 2010/04/14
#  Last observation: 2010/04/25
# Chi-squared of fit:  1514.90 DOF:   80 RMS:  1.05
# Min/Max residuals:    -2.20    2.21
# Exact a, adot, b, bdot, g, gdot:
 -1.299793E-05 -1.355776E-01  4.529359E-05  5.594062E-01  1.671677E-01  1.639045E-01
# Covariance matrix:
  1.8740E-14 -1.1229E-14 -1.1293E-15  1.1381E-14  3.0344E-15  8.6339E-15
 -1.1229E-14  1.2947E-13  1.7760E-15 -3.0947E-13  4.6690E-14 -2.6315E-13
 -1.1293E-15  1.7760E-15  3.3186E-14 -5.2743E-14 -5.7421E-14 -2.3192E-14
  1.1381E-14 -3.0947E-13 -5.2743E-14  1.3069E-12 -2.6705E-14  1.0353E-12
  3.0344E-15  4.6690E-14 -5.7421E-14 -2.6705E-14  2.6115E-13 -7.9151E-14
  8.6339E-15 -2.6315E-13 -2.3192E-14  1.0353E-12 -7.9151E-14  8.6338E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   86.169445  -57.135973    0.993059   -0.158313    0.010580  2455300.702006
# Heliocentric elements and errors
Epoch:              2455300.5000  =  2010/04/14
Mean Anomaly:            0.15192 +/-     0.000
Argument of Peri:       50.16877 +/-     0.000
Long of Asc Node:      313.25750 +/-     0.000
Inclination:            99.68790 +/-     0.000
Eccentricity:         0.97069306 +/-    0.0000
Semi-Major Axis:    183.66398236 +/-    0.1145
Time of Perihelion: 2454916.8429 +/-       0.5
Perihelion:           5.38262885 +/-    0.0048
Aphelion:           361.94533587 +/-    0.2256
Period (y)             2489.1106 +/-      2.33
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -0.69957811 +/-    0.0000
Ecliptic Y           -0.74343309 +/-    0.0000
Ecliptic Z            5.96868238 +/-    0.0000
Ecliptic XDOT        -0.00672639 +/-    0.0000
Ecliptic YDOT         0.00632878 +/-    0.0000
Ecliptic ZDOT         0.00329043 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    6.05524109 +/-    0.0000
Geocenter to KBO      5.98192681 +/-    0.0000
# Hcoef: 13.22

The following table shows the complete astrometric record for 10GW147. 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 (10GW147) followed by the observatory code and reference code for the source of the astrometry.

2010 04  14.20124  18 18 29.39   +63 16 00.7         10GW147   C51  S~0GZE      
2010 04  14.73046  18 17 57.03   +63 23 01.1         10GW147   C51  S~0GZE      
2010 04  14.86276  18 17 48.87   +63 24 47.3         10GW147   C51  S~0GZE      
2010 04  15.25980  18 17 23.88   +63 30 02.3         10GW147   C51  S~0GZE      
2010 04  15.39211  18 17 15.67   +63 31 48.1         10GW147   C51  S~0GZE      
2010 04  15.52442  18 17 06.96   +63 33 32.0         10GW147   C51  S~0L2S      
2010 04  17.35592  18 15 06.74   +63 57 31.7   21.0R 10GW147   675  C~0GZE      
2010 04  17.35805  18 15 06.50   +63 57 33.1   21.1R 10GW147   675  C~0GZE      
2010 04  17.36019  18 15 06.43   +63 57 35.2   21.3R 10GW147   675  C~0GZE      
2010 04  17.36320  18 15 06.15   +63 57 37.6   21.3R 10GW147   675  C~0GZE      
2010 04  17.36603  18 15 06.05   +63 57 40.4   21.2R 10GW147   675  C~0GZE      
2010 04  17.36886  18 15 05.78   +63 57 41.8   21.2R 10GW147   675  C~0GZE      
2010 04  17.37169  18 15 05.64   +63 57 44.5   21.3R 10GW147   675  C~0GZE      
2010 04  17.37453  18 15 05.39   +63 57 47.2   21.1R 10GW147   675  C~0GZE      
2010 04  17.44302  18 15 00.31   +63 58 37.9         10GW147   C51  S~0GZE      
2010 04  17.70737  18 14 42.06   +64 02 04.9         10GW147   C51  S~0GZE      
2010 04  18.03820  18 14 19.26   +64 06 26.0         10GW147   C51  S~0GZE      
2010 04  18.17050  18 14 09.87   +64 08 06.1         10GW147   C51  S~0GZE      
2010 04  18.377950 18 13 55.45   +64 10 47.1   22.2V 10GW147   H21  C~0GZE      
2010 04  18.395748 18 13 54.24   +64 11 00.8   22.2V 10GW147   H21  C~0GZE      
2010 04  18.412001 18 13 53.04   +64 11 13.3   22.4V 10GW147   H21  C~0GZE      
2010 04  18.50145  18 13 46.77   +64 12 24.0         10GW147   C51  S~0GZE      
2010 04  18.76606  18 13 28.07   +64 15 41.1         10GW147   C51  S~0GZE      
2010 04  19.55989  18 12 29.93   +64 25 54.8         10GW147   C51  S~0LM8      
2010 04  19.95680  18 12 00.60   +64 30 58.8         10GW147   C51  S~0LM8      
2010 04  20.41967  18 11 26.08   +64 36 49.0         10GW147   C51  S~0LM8      
2010 04  20.68428  18 11 06.05   +64 40 12.6         10GW147   C51  S~0LM8      
2010 04  21.01523  18 10 40.68   +64 44 18.2         10GW147   C51  S~0LM8      
2010 04  21.08119  18 10 35.36   +64 45 09.1         10GW147   C51  S~0LM8      
2010 04  21.21350  18 10 25.08   +64 46 47.6         10GW147   C51  S~0LM8      
2010 04  21.67675  18 09 48.79   +64 52 35.5         10GW147   C51  S~0LM8      
2010 04  21.94136  18 09 27.91   +64 55 53.5         10GW147   C51  S~0Gu9      
2010 04  22.20597  18 09 06.74   +64 59 12.8         10GW147   C51  S~0Gu9      
2010 04  22.47058  18 08 44.84   +65 02 26.8         10GW147   C51  S~0Gu9      
2010 04  22.66885  18 08 28.95   +65 04 58.1         10GW147   C51  S~0Gu9      
2010 04  23.06576  18 07 56.92   +65 09 49.6         10GW147   C51  S~0Gu9      
2010 04  23.13210  18 07 51.84   +65 10 37.8         10GW147   C51  S~0Gu9      
2010 04  23.26441  18 07 40.27   +65 12 14.8         10GW147   C51  S~0Gu9      
2010 04  23.79363  18 06 56.32   +65 18 40.1         10GW147   C51  S~0Gu9      
2010 04  24.05823  18 06 33.84   +65 21 56.7         10GW147   C51  S~0Gu9      
2010 04  24.25650  18 06 17.07   +65 24 21.5         10GW147   C51  S~0Gu9      
2010 04  24.38880  18 06 05.60   +65 25 55.3         10GW147   C51  S~0Gu9      
2010 04  25.05032  18 05 07.95   +65 33 53.9         10GW147   C51  S~0Gu9      
2010 04  25.11667  18 05 02.92   +65 34 40.8         10GW147   C51  S~0Gu9      
2010 04  25.91049  18 03 51.86   +65 44 10.2         10GW147   C51  S~0LM8      
2010 04  26.04280  18 03 40.14   +65 45 44.9         10GW147   C51  S~0LM8      
2010 04  26.43971  18 03 04.37   +65 50 24.2         10GW147   C51  S~0LM8      
2010 04  26.70432  18 02 40.26   +65 53 31.3         10GW147   C51  S~0LM8      
2010 04  26.90258  18 02 21.65   +65 55 49.1         10GW147   C51  S~0LM8      
2010 04  26.96893  18 02 15.70   +65 56 36.7         10GW147   C51  S~0LM8      
2010 04  27.16719  18 01 57.33   +65 58 55.5         10GW147   C51  S~0LM9      
2010 04  27.82871  18 00 55.04   +66 06 35.7         10GW147   C51  S~0LM9      
2010 04  27.89506  18 00 49.02   +66 07 21.0         10GW147   C51  S~0LM9      
2010 04  28.02736  18 00 36.34   +66 08 52.9         10GW147   C51  S~0LM9      
2010 04  28.09332  18 00 29.82   +66 09 37.7         10GW147   C51  S~0LM9      
2010 04  28.29197  18 00 10.91   +66 11 54.2         10GW147   C51  S~0LM9      
2010 04  28.42427  17 59 58.16   +66 13 26.2         10GW147   C51  S~0LM9      
2010 04  28.49024  17 59 51.96   +66 14 10.9         10GW147   C51  S~0LM9      
2010 04  28.82119  17 59 20.03   +66 17 56.7         10GW147   C51  S~0LM9      
2010 04  28.88715  17 59 13.10   +66 18 41.9         10GW147   C51  S~0LM9      
2010 05  01.20267  17 55 20.28   +66 44 26.8         10GW147   C51  S~0Gu9      
2010 05  01.40093  17 54 59.59   +66 46 36.5         10GW147   C51  S~0Gu9      
2010 05  01.46727  17 54 52.57   +66 47 21.0         10GW147   C51  S~0Gu9      
2010 05  01.86406  17 54 11.02   +66 51 39.1         10GW147   C51  S~0Gu9      
2010 05  01.99649  17 53 56.93   +66 53 04.4         10GW147   C51  S~0Gu9      
2010 05  02.12867  17 53 42.74   +66 54 33.5         10GW147   C51  S~0Gu9      
2010 05  02.12880  17 53 43.26   +66 54 34.2         10GW147   C51  S~0Gu9      
2010 05  02.19476  17 53 36.04   +66 55 12.9         10GW147   C51  S~0Gu9      
2010 05  02.26097  17 53 28.94   +66 55 57.2         10GW147   C51  S~0Gu9      
2010 05  02.26110  17 53 28.64   +66 55 55.5         10GW147   C51  S~0Gu9      
2010 05  06.56067  17 45 25.96   +67 40 01.2         10GW147   C51  S~0HIe      
2010 05  06.69297  17 45 10.77   +67 41 22.7         10GW147   C51  S~0HIe      
2010 05  07.08989  17 44 23.24   +67 45 13.0         10GW147   C51  S~0HIe      
2010 05  07.48680  17 43 35.60   +67 49 03.5         10GW147   C51  S~0HIe      
2010 05  08.01601  17 42 31.33   +67 54 04.2         10GW147   C51  S~0HIe      
2010 05  08.67754  17 41 10.18   +68 00 17.6         10GW147   C51  S~0HIe      
2010 06  15.20444  16 05 32.61   +70 26 38.5   21.1R 10GW147   705  C~0InX      
2010 06  15.20645  16 05 32.31   +70 26 38.6   21.8R 10GW147   705  C~0InX      
2010 06  15.21352  16 05 31.17   +70 26 37.7   20.8R 10GW147   705  C~0InX      
2010 06  19.405488 15 54 54.334  +70 16 40.86  21.2R 10GW147   568  C~0KAj      
2010 06  19.407559 15 54 54.019  +70 16 40.47  21.4R 10GW147   568  C~0KAj      
2010 06  19.409594 15 54 53.724  +70 16 40.16  21.4R 10GW147   568  C~0KAj      
2012 03  15.30032  11 31 39.94   +62 17 55.9   22.7R 10GW147   695  C~14jH      
2012 03  15.30411  11 31 39.68   +62 17 55.6   22.4R 10GW147   695  C~14jH      
2012 03  15.30791  11 31 39.40   +62 17 55.6   22.8R 10GW147   695  C~14jH      
2013 03  12.18868  10 31 48.97   +52 36 32.6   23.4R 10GW147   695  C~0ueO      
2013 03  12.24693  10 31 46.60   +52 36 29.4         10GW147   695  C~0ueO      
2013 03  13.22892  10 31 06.87   +52 35 32.5         10GW147   695  C~0ueO      

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 (  -1.70)      0.00 (  -2.49)
  2   0.0014      0.00     0.23       0.00    -1.08
  3   0.0018      0.00     0.99       0.00    -0.19
  4   0.0029      0.00    -0.55       0.00    -0.65
  5   0.0033      0.00     1.94       0.00     0.23
  6   0.0036      0.00 (  -2.46)      0.00 (  -0.68)
  7   0.0086      0.00 (   3.74)      0.00 (  -1.12)
  8   0.0086      0.00 (   2.34)      0.00 (  -1.40)
  9   0.0086      0.00 (   3.50)      0.00 (  -0.98)
 10   0.0087      0.00 (   2.41)      0.00 (  -0.95)
 11   0.0087      0.00 (   3.83)      0.00 (  -0.37)
 12   0.0087      0.00 (   2.71)      0.00 (  -1.19)
 13   0.0087      0.00 (   3.53)      0.00 (  -0.72)
 14   0.0087      0.00 (   2.72)      0.00 (  -0.25)
 15   0.0089      0.00 (  -1.19)      0.00 (  -2.62)
 16   0.0096      0.00 (  -2.61)      0.00 (  -1.52)
 17   0.0105      0.00 (  -0.20)      0.00 (   2.56)
 18   0.0109      0.00    -2.20       0.00     0.08
 19   0.0114      0.00    -0.34       0.00    -0.08
 20   0.0115      0.00     0.66       0.00    -0.18
 21   0.0115      0.00     0.16       0.00    -0.26
 22   0.0118      0.00 (   1.44)      0.00 (   1.91)
 23   0.0125      0.00 (   3.78)      0.00 (  -5.18)
 24   0.0147      0.00 (  -4.25)      0.00 (  -1.04)
 25   0.0158      0.00 (  -3.39)      0.00 (  -0.08)
 26   0.0170      0.00     0.30       0.00    -1.80
 27   0.0177      0.00     1.58       0.00     1.36
 28   0.0187      0.00 (   2.11)      0.00 (  -2.97)
 29   0.0188      0.00    -1.24       0.00    -1.78
 30   0.0192      0.00 (  -1.60)      0.00 (  -2.89)
 31   0.0205      0.00 (  -2.10)      0.00 (  -2.64)
 32   0.0212      0.00 (  -0.99)      0.00 (  -2.44)
 33   0.0219      0.00    -1.58       0.00    -0.37
 34   0.0226      0.00 ( -10.44)      0.00 (  -3.01)
 35   0.0232      0.00 (  -7.53)      0.00 (   1.33)
 36   0.0243      0.00    -0.48       0.00    -0.36
 37   0.0245      0.00 (   5.39)      0.00 (  -1.03)
 38   0.0248      0.00 (  -3.98)      0.00 (  -1.38)
 39   0.0263      0.00 (   0.24)      0.00 (  -3.97)
 40   0.0270      0.00    -1.18       0.00    -0.38
 41   0.0275      0.00     0.66       0.00     0.20
 42   0.0279      0.00 (  -1.47)      0.00 (  -2.03)
 43   0.0297      0.00 (  -6.38)      0.00 (  -1.20)
 44   0.0299      0.00 (   5.36)      0.00 (  -2.00)
 45   0.0321      0.00 (  -4.14)      0.00 (  -0.04)
 46   0.0324      0.00    -1.47       0.00     0.66
 47   0.0335      0.00     1.51       0.00    -0.98
 48   0.0342      0.00 (   2.99)      0.00 (  -0.33)
 49   0.0348      0.00 (  -2.28)      0.00 (  -1.77)
 50   0.0350      0.00     0.47       0.00    -0.68
 51   0.0355      0.00     0.88       0.00    -0.60
 52   0.0373      0.00    -1.48       0.00    -0.36
 53   0.0375      0.00 (   2.66)      0.00 (  -0.95)
 54   0.0379      0.00     1.28       0.00    -0.41
 55   0.0380      0.00 (  -2.12)      0.00 (  -1.09)
 56   0.0386      0.00    -0.43       0.00    -1.29
 57   0.0389      0.00    -0.77       0.00    -0.11
 58   0.0391      0.00     1.68       0.00    -0.62
 59   0.0400      0.00 (   4.20)      0.00 (  -0.95)
 60   0.0402      0.00 (  -3.27)      0.00 (  -0.68)
 61   0.0465      0.00 (   1.36)      0.00 (  -2.82)
 62   0.0471      0.00 (   0.39)      0.00 (  -2.77)
 63   0.0473      0.00    -1.04       0.00    -1.55
 64   0.0484      0.00     0.68       0.00    -1.25
 65   0.0487      0.00    -0.69       0.00    -1.57
 66   0.0491      0.00 (  -3.25)      0.00 (   2.27)
 67   0.0491      0.00 (   4.76)      0.00 (   2.88)
 68   0.0493      0.00     1.66       0.00    -0.89
 69   0.0494      0.00     0.93       0.00     0.84
 70   0.0494      0.00 (  -3.36)      0.00 (  -0.95)
 71   0.0612      0.00 (   0.03)      0.00 (  -3.09)
 72   0.0616      0.00 (   6.70)      0.00 (   0.76)
 73   0.0627      0.00     1.50       0.00    -0.49
 74   0.0638      0.00     0.80       0.00     0.63
 75   0.0652      0.00    -1.82       0.00    -1.10
 76   0.0670      0.00    -1.96       0.00    -0.20
 77   0.1698      0.00 (   2.46)      0.00 (   0.34)
 78   0.1698      0.00 (   2.68)      0.00 (   0.66)
 79   0.1698      0.00     2.21       0.00     0.52
 80   0.1813      0.00     1.42       0.00     0.75
 81   0.1813      0.00     1.34       0.00     0.73
 82   0.1813      0.00     1.49       0.00     0.78
 83   1.9195      0.00     1.55       0.00    -0.18
 84   1.9195      0.00     1.69       0.00    -0.36
 85   1.9195      0.00     1.54       0.00    -0.24
 86   2.9103      0.00    -0.18       0.00     0.08
 87   2.9105      0.00     0.17       0.00     0.05
 88   2.9131      0.00     0.20       0.00     0.42

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.

10GW147    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj       179.867   179.841   179.894
ecceobj         0.970     0.970     0.970
incobj         99.667    99.667    99.667
qmin           -7.666     1.801     3.079
qmax         ********  5312.711  2863.259
amean        2325.955  1082.096   334.530
amin          116.854   148.060    62.172
amax         9997.841  2659.148  1434.204
emean           0.984     0.989     0.969
emin            0.949     0.960     0.891
emax            1.001     0.999     0.998
imean          98.860   100.011   100.057
imin           20.575    68.271    83.743
imax          161.784   126.827   112.388
excite_mean     1.357     1.389     1.381
fracstop        0.727     0.185     0.513
cjmean          0.000    -0.161    -0.056

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       181.8      41.8     226.3
kozaiamp        180.0       6.5     180.0