Orbit Fit and Astrometric record for 49036

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: 49036     
# Created Tue Oct 24 01:36:20 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   64 observations of   65
# Arc:   7.03y
# First observation: 1998/08/21
#  Last observation: 2005/09/02
# Chi-squared of fit:   149.59 DOF:  122 RMS:  0.27
# Min/Max residuals:    -0.73    0.75
# Exact a, adot, b, bdot, g, gdot:
  2.606788E-05  9.428181E-02 -3.459411E-06 -1.552988E-02  6.019046E-02  4.089648E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.678817  -49.988288   -0.311576   -0.011533   -0.954104  2451047.013771
# Heliocentric elements and errors
Epoch:              2451046.5000  =  1998/08/21
Mean Anomaly:           21.30697 +/-     0.000
Argument of Peri:      155.69905 +/-     0.000
Long of Asc Node:      127.15102 +/-     0.000
Inclination:             9.36218 +/-     0.000
Eccentricity:         0.13996513 +/-    0.0000
Semi-Major Axis:     20.13919552 +/-    0.0000
Time of Perihelion: 2449092.6965 +/-       0.0
Perihelion:          17.32041045 +/-    0.0000
Aphelion:            22.95798060 +/-    0.0000
Period (y)               90.3798 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           11.54192087 +/-    0.0000
Ecliptic Y          -13.25564244 +/-    0.0000
Ecliptic Z           -0.19687671 +/-    0.0000
Ecliptic XDOT         0.00339934 +/-    0.0000
Ecliptic YDOT         0.00263032 +/-    0.0000
Ecliptic ZDOT        -0.00070860 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   17.57742574 +/-    0.0000
Geocenter to KBO     16.61393714 +/-    0.0000
# Hcoef: 10.36

The following table shows the complete astrometric record for 49036. 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 (49036) followed by the observatory code and reference code for the source of the astrometry.

1998 08  21.51304  20 50 35.75   -18 23 30.0         49036     568  Ca3023      
1998 08  22.46561  20 50 26.56   -18 24 15.3         49036     568  Ca3023      
1998 08  22.51999  20 50 25.98   -18 24 17.3         49036     568  Ca3023      
1998 08  27.40850  20 49 39.80   -18 28 00.1         49036     568  Ca3023      
1998 08  27.43545  20 49 39.55   -18 28 01.0   23.0R 49036     568  Ca3023      
1998 08  27.46193  20 49 39.30   -18 28 02.5         49036     568  Ca3023      
1998 08  27.48792  20 49 39.07   -18 28 03.4         49036     568  Ca3023      
1998 09  23.30315  20 46 22.80   -18 44 10.8         49036     568  Ca3023      
1998 09  23.33616  20 46 22.65   -18 44 11.3   23.1V 49036     568  Ca3023      
1998 09  23.36797  20 46 22.50   -18 44 11.9         49036     568  Ca3023      
1998 09  23.43834  20 46 22.12   -18 44 13.6         49036     568  Ca3023      
1998 09  24.24512  20 46 18.19   -18 44 34.7         49036     568  Ca3023      
1998 09  24.28480  20 46 17.99   -18 44 36.0         49036     568  Ca3023      
1998 09  24.33354  20 46 17.74   -18 44 37.1         49036     568  Ca3023      
1998 09  24.36363  20 46 17.58   -18 44 37.9         49036     568  Ca3023      
1998 09  25.23594  20 46 13.47   -18 44 59.8         49036     568  Ca3023      
1998 09  25.25084  20 46 13.41   -18 45 00.2         49036     568  Ca3023      
1998 09  25.26586  20 46 13.32   -18 45 00.5         49036     568  Ca3023      
1998 09  25.37063  20 46 12.80   -18 45 03.1         49036     568  Ca3023      
1998 09  28.28043  20 46 00.23   -18 46 11.1         49036     568  Ca3023      
1998 09  28.31962  20 46 00.07   -18 46 12.0   22.9R 49036     568  Ca3023      
1998 10  15.10089  20 45 23.12   -18 50 19.5   22.8R 49036     695  Ca3023      
1998 10  15.10758  20 45 23.12   -18 50 19.5   22.9R 49036     695  Ca3023      
1998 10  16.12465  20 45 22.91   -18 50 26.3   23.0R 49036     695  Ca3023      
1998 10  16.13144  20 45 22.92   -18 50 26.4   23.2R 49036     695  Ca3023      
1998 10  16.15561  20 45 22.90   -18 50 26.6   22.9R 49036     695  Ca3023      
1998 10  23.21953  20 45 28.20   -18 50 47.4   22.6R 49036     568  Ca3023      
1998 10  23.33865  20 45 28.37   -18 50 47.4   22.6R 49036     568  Ca3023      
1998 11  28.19645  20 48 52.49   -18 40 52.3         49036     568  Ca3023      
1998 11  28.20635  20 48 52.60   -18 40 52.1         49036     568  Ca3023      
1998 11  28.21936  20 48 52.72   -18 40 51.6         49036     568  Ca3023      
1998 11  28.22755  20 48 52.80   -18 40 51.3         49036     568  Ca3023      
1999 05  06.58179  21 22 59.96   -16 37 58.6   22.7  49036     568  Ca5542      
1999 05  06.60703  21 23 00.07   -16 37 58.5   23.1  49036     568  Ca5542      
1999 05  06.61707  21 23 00.11   -16 37 58.5   23.6  49036     568  Ca5542      
1999 07  08.48344  21 20 32.36   -17 02 54.4   22.1V 49036     568  Ca5542      
1999 07  08.51860  21 20 32.07   -17 02 56.2   22.8V 49036     568  Ca5542      
1999 07  11.52245  21 20 07.21   -17 05 25.9         49036     568  Ca5542      
1999 07  11.53951  21 20 07.07   -17 05 26.8         49036     568  Ca5542      
1999 07  12.56116  21 19 58.36   -17 06 18.3         49036     568  Ca5542      
1999 07  12.61316  21 19 57.89   -17 06 21.1         49036     568  Ca5542      
2000 07  29.41752  21 39 25.02   -16 30 52.4   22.7R 49036     568  Cd0721      
2000 07  29.45828  21 39 24.63   -16 30 54.9   22.9R 49036     568  Cd0721      
2000 07  29.47279  21 39 24.50   -16 30 55.7   22.7R 49036     568  Cd0721      
2000 07  29.48434  21 39 24.39   -16 30 56.7   22.4R 49036     568  Cd0721      
2000 07  29.49608  21 39 24.27   -16 30 57.2   22.7R 49036     568  Cd0721      
2000 07  29.50748  21 39 24.18   -16 30 57.7   22.6R 49036     568  Cd0721      
2000 07  30.39509  21 39 15.65   -16 31 50.0   22.2R 49036     568  Cd0721      
2000 07  30.48815  21 39 14.72   -16 31 55.2   22.3R 49036     568  Cd0721      
2000 08  27.03230  21 34 39.46   -16 58 24.8   22.3R 49036     807  Cc0750      
2000 08  27.10006  21 34 38.78   -16 58 28.4         49036     807  Cc0750      
2000 09  04.99887  21 33 14.36   -17 06 09.1         49036     309  Cc7432      
2000 09  05.01077  21 33 14.26   -17 06 09.5         49036     309  Cc7432      
2000 09  05.01560  21 33 14.24   -17 06 09.0         49036     309  Cc7432      
2000 09  05.02036  21 33 14.15   -17 06 10.0         49036     309  Cc7432      
2001 07  16.42810  22 02 52.38   -15 19 16.5   23.0R 49036     568  Cd4030      
2001 07  17.52596  22 02 44.10   -15 20 17.2   22.8R 49036     568  Cd4030      
2001 07  17.54347  22 02 43.96   -15 20 17.8   22.9R 49036     568  Cd4030      
2002 06  20.55281  22 25 36.57   -13 54 48.8   22.5R 49036     568  Cg5342      
2002 06  20.56544  22 25 36.53   -13 54 49.0   23.0R 49036     568  Cg5342      
2002 09  16.44516  22 14 28.19   -15 15 54.4   22.9R 49036     568  Cg5342      
2002 09  16.45425  22 14 28.08   -15 15 55.0   22.6R 49036     568  Cg5342      
2005 09  02.41522  23 16 44.42   -11 20 21.7   22.3R 49036     250  S~06FA      
2005 09  02.42193  23 16 44.35   -11 20 22.2         49036     250  S~06FA      
2005 09  02.42865  23 16 44.29   -11 20 22.6         49036     250  S~06FA      

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 (  -0.39)      0.00 (  -2.79)
  2   0.0026      0.00     0.75       0.00    -0.73
  3   0.0028      0.00     0.08       0.00    -0.23
  4   0.0161      0.00    -0.26       0.00    -0.06
  5   0.0162      0.00    -0.21       0.00     0.23
  6   0.0163      0.00    -0.23       0.00    -0.11
  7   0.0164      0.00    -0.03       0.00     0.13
  8   0.0898      0.00    -0.44       0.00    -0.29
  9   0.0899      0.00    -0.09       0.00     0.08
 10   0.0900      0.00     0.16       0.00     0.30
 11   0.0901      0.00    -0.07       0.00     0.40
 12   0.0924      0.00     0.15       0.00     0.23
 13   0.0925      0.00     0.16       0.00    -0.05
 14   0.0926      0.00     0.11       0.00     0.09
 15   0.0927      0.00    -0.02       0.00     0.04
 16   0.0951      0.00    -0.01       0.00     0.03
 17   0.0951      0.00     0.18       0.00     0.01
 18   0.0951      0.00    -0.07       0.00     0.08
 19   0.0954      0.00    -0.26       0.00     0.04
 20   0.1034      0.00    -0.05       0.00     0.12
 21   0.1035      0.00     0.05       0.00     0.08
 22   0.1495      0.00     0.06       0.00     0.27
 23   0.1495      0.00     0.11       0.00     0.32
 24   0.1523      0.00     0.08       0.00     0.35
 25   0.1523      0.00     0.26       0.00     0.29
 26   0.1523      0.00     0.05       0.00     0.24
 27   0.1717      0.00    -0.09       0.00     0.17
 28   0.1720      0.00    -0.06       0.00     0.07
 29   0.2702      0.00    -0.18       0.00    -0.33
 30   0.2702      0.00     0.08       0.00    -0.45
 31   0.2702      0.00     0.05       0.00    -0.38
 32   0.2703      0.00     0.09       0.00    -0.34
 33   0.7066      0.00    -0.20       0.00     0.29
 34   0.7066      0.00    -0.11       0.00     0.23
 35   0.7067      0.00    -0.12       0.00     0.17
 36   0.8788      0.00    -0.01       0.00     0.27
 37   0.8789      0.00     0.02       0.00     0.20
 38   0.8871      0.00     0.31       0.00    -0.09
 39   0.8871      0.00     0.43       0.00    -0.13
 40   0.8899      0.00     0.67       0.00     0.17
 41   0.8901      0.00     0.48       0.00    -0.00
 42   1.9381      0.00    -0.33       0.00     0.19
 43   1.9382      0.00    -0.20       0.00     0.09
 44   1.9383      0.00    -0.02       0.00     0.14
 45   1.9383      0.00     0.03       0.00    -0.19
 46   1.9384      0.00    -0.05       0.00    -0.00
 47   1.9384      0.00     0.28       0.00     0.16
 48   1.9408      0.00    -0.01       0.00    -0.16
 49   1.9411      0.00    -0.20       0.00     0.11
 50   2.0165      0.00     0.55       0.00     0.36
 51   2.0167      0.00     0.47       0.00     0.46
 52   2.0410      0.00     0.03       0.00    -0.32
 53   2.0411      0.00     0.18       0.00    -0.13
 54   2.0411      0.00     0.55       0.00     0.61
 55   2.0411      0.00    -0.14       0.00    -0.15
 56   2.9019      0.00    -0.02       0.00    -0.23
 57   2.9049      0.00     0.29       0.00    -0.21
 58   2.9049      0.00     0.25       0.00     0.16
 59   3.8304      0.00     0.13       0.00    -0.69
 60   3.8304      0.00    -0.07       0.00    -0.48
 61   4.0710      0.00     0.26       0.00    -0.46
 62   4.0710      0.00    -0.16       0.00    -0.61
 63   7.0333      0.00     0.41       0.00     0.45
 64   7.0333      0.00     0.30       0.00     0.40
 65   7.0333      0.00     0.33       0.00     0.45

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.

49036    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        20.075    20.075    20.075
ecceobj         0.137     0.137     0.137
incobj          9.371     9.371     9.371
qmin           16.533    16.582    16.565
qmax           23.600    25.212    25.179
amean          19.997    20.104    20.132
amin           19.657    19.547    19.679
amax           20.562    21.763    22.155
emean           0.120     0.130     0.120
emin            0.023     0.088     0.052
emax            0.171     0.171     0.165
imean          10.312    11.542    10.154
imin            7.840     7.840     7.840
imax           13.003    13.753    12.563
excite_mean     0.221     0.241     0.218
fracstop        0.012     0.031     0.014
cjmean          3.094     3.084     3.091

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       199.1     188.0     197.6
kozaiamp         66.4      28.7      36.1