Orbit Fit and Astrometric record for 120132

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: 120132    
# Created Mon Dec 22 02:36:58 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   69 observations of   69
# Arc:  22.34y
# First observation: 1989/12/08
#  Last observation: 2012/04/10
# Chi-squared of fit:   350.56 DOF:  132 RMS:  0.40
# Min/Max residuals:    -1.19    1.42
# Exact a, adot, b, bdot, g, gdot:
  1.702195E-05  3.058158E-02 -3.246644E-06 -6.382589E-03  2.706986E-02  1.192033E-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
    0.423983  161.252957    0.980738    0.000669   -0.091709  2447869.020090
# Heliocentric elements and errors
Epoch:              2447868.5000  =  1989/12/08
Mean Anomaly:            2.27425 +/-     0.000
Argument of Peri:      173.97993 +/-     0.000
Long of Asc Node:      341.76571 +/-     0.000
Inclination:            11.77016 +/-     0.000
Eccentricity:         0.25334637 +/-    0.0000
Semi-Major Axis:     49.59130750 +/-    0.0000
Time of Perihelion: 2447062.6733 +/-       0.0
Perihelion:          37.02752996 +/-    0.0000
Aphelion:            62.15508503 +/-    0.0000
Period (y)              349.2340 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.75167428 +/-    0.0000
Ecliptic Y           12.82967036 +/-    0.0000
Ecliptic Z            0.27327557 +/-    0.0000
Ecliptic XDOT        -0.00111834 +/-    0.0000
Ecliptic YDOT        -0.00288835 +/-    0.0000
Ecliptic ZDOT        -0.00064453 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.04528704 +/-    0.0000
Geocenter to KBO     36.94145061 +/-    0.0000
# Hcoef:  4.48

The following table shows the complete astrometric record for 120132. 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 (120132) followed by the observatory code and reference code for the source of the astrometry.

1989 12  08.51944  10 51 27.94   +07 44 13.5         120132    261   x2434      
1996 04  10.19236  11 20 11.52   +02 12 20.4         120132    261   x2434      
1999 03  20.28566  11 39 35.75   -01 02 17.6   20.7V 120132    645  cn4833      
1999 03  22.28014  11 39 25.79   -01 01 19.9   20.7V 120132    645  cn4833      
2002 02  26.37635  11 58 53.71   -04 13 58.0   20.3R 120132    644  Cj0464      
2002 03  13.47304  11 57 41.67   -04 07 37.1         120132    644  Cj0464      
2002 03  14.45880  11 57 36.73   -04 07 10.0         120132    644  Cj0464      
2003 03  11.27351  12 03 43.26   -05 08 36.8   20.5R 120132    644  Cm3329      
2003 03  11.35161  12 03 42.89   -05 08 34.9         120132    644  Cm3329      
2003 03  11.41537  12 03 42.57   -05 08 32.9         120132    644  Cm3329      
2003 03  26.26595  12 02 29.11   -05 01 41.0   19.8  120132    644  Ch8428      
2003 03  26.34097  12 02 28.69   -05 01 38.8   19.9  120132    644  Ch8428      
2003 03  26.40427  12 02 28.43   -05 01 36.9   19.7  120132    644  Ch8428      
2003 04  01.22208  12 01 59.77   -04 58 47.8   19.3R 120132    675  Ch8428      
2003 04  01.34656  12 01 59.15   -04 58 44.2   19.3R 120132    675  Ch8428      
2003 04  01.41682  12 01 58.82   -04 58 41.9   19.4R 120132    675  Ch8428      
2003 04  02.25715  12 01 54.75   -04 58 17.4   19.5R 120132    675  Ch8428      
2003 04  25.21484  12 00 12.38   -04 47 31.9   20.0R 120132    675  Ch8428      
2003 04  25.28394  12 00 12.14   -04 47 30.4   20.2R 120132    675  Ch8428      
2003 05  02.54425  11 59 45.28   -04 44 29.0   20.7V 120132    360  Ch8428      
2003 05  02.57203  11 59 45.23   -04 44 27.8         120132    360  Ch8428      
2003 05  02.57926  11 59 45.19   -04 44 28.3         120132    360  Ch8428      
2003 05  03.88064  11 59 40.75   -04 43 57.4         120132    246  Ch8428      
2003 05  03.88267  11 59 40.75   -04 43 57.9         120132    246  Ch8428      
2003 05  03.88556  11 59 40.73   -04 43 57.8         120132    246  Ch8428      
2003 05  03.88666  11 59 40.75   -04 43 57.0         120132    246  Ch8428      
2003 05  03.88995  11 59 40.71   -04 43 57.6         120132    246  Ch8428      
2003 05  04.83408  11 59 37.64   -04 43 35.4         120132    246  Ch8428      
2003 05  04.83643  11 59 37.60   -04 43 34.3         120132    246  Ch8428      
2003 05  04.83742  11 59 37.59   -04 43 33.7         120132    246  Ch8428      
2003 05  04.83889  11 59 37.55   -04 43 34.9         120132    246  Ch8428      
2003 05  04.84296  11 59 37.54   -04 43 33.9         120132    246  Ch8429      
2003 05  05.49697  11 59 35.44   -04 43 19.2   20.7V 120132    360  Ci0218      
2003 05  05.55710  11 59 35.21   -04 43 17.9         120132    360  Ci0218      
2003 05  31.16791  11 58 38.52   -04 35 59.2   20.3R 120132    675  Ci1570      
2003 05  31.21167  11 58 38.44   -04 35 58.8   20.2R 120132    675  Ci1570      
2003 05  31.26010  11 58 38.39   -04 35 58.6   20.3R 120132    675  Ci1570      
2003 07  19.37672  11 59 37.77   -04 39 15.6         120132    413  Ci2282      
2004 02  18.11395  12 11 07.33   -06 15 41.8   20.2R 120132    493  Cj8801      
2004 02  19.09749  12 11 03.44   -06 15 25.0         120132    493  Cj8801      
2004 02  20.05627  12 10 59.62   -06 15 08.3   20. R 120132    621  Ck0696      
2004 02  21.04437  12 10 55.56   -06 14 50.9         120132    621  Ck0696      
2004 02  23.07022  12 10 47.16   -06 14 12.9         120132    621  Ck0696      
2004 02  24.05454  12 10 43.01   -06 13 53.4         120132    621  Ck0696      
2004 04  19.14677  12 06 22.29   -05 49 20.5   20.9V 120132    691  Ck5104      
2004 04  19.17305  12 06 22.18   -05 49 19.8   20.9V 120132    691  Ck5104      
2004 04  19.20016  12 06 22.06   -05 49 19.0   20.9V 120132    691  Ck5104      
2004 05  26.06127  12 04 28.33   -05 35 42.6         120132    304  Ck8680      
2004 05  26.11174  12 04 28.24   -05 35 41.9         120132    304  Ck8680      
2005 02  05.08331  12 17 35.75   -07 16 39.5         120132    621  Cm6760      
2005 02  05.11843  12 17 35.65   -07 16 39.1         120132    621  Cm6760      
2005 02  06.15619  12 17 32.53   -07 16 29.9         120132    621  Cm6760      
2005 02  07.09431  12 17 29.69   -07 16 20.8         120132    621  Cm6760      
2005 02  07.12940  12 17 29.56   -07 16 20.7   20. R 120132    621  Cm6760      
2006 04  01.95657  12 19 20.21   -07 55 10.1         120132    621  Cq8731      
2006 04  01.97955  12 19 20.10   -07 55 09.3         120132    621  Cq8731      
2006 04  02.00390  12 19 20.00   -07 55 08.6   20. R 120132    621  Cq8731      
2010 03  10.09970  12 44 11.953  -11 50 20.97  20.2R 120132    809  C~0FK7      
2010 03  10.18414  12 44 11.521  -11 50 19.93  20.2R 120132    809  C~0FK7      
2010 03  10.26861  12 44 11.169  -11 50 17.95  20.2R 120132    809  C~0FK7      
2010 06  12.03838  12 38 10.851  -11 11 39.92        120132    809  C~0X4j      
2010 06  12.09561  12 38 10.784  -11 11 39.46        120132    809  C~0X4j      
2010 06  12.15351  12 38 10.736  -11 11 38.43        120132    809  C~0X4j      
2010 06  17.05852  12 38 06.916  -11 10 37.82        120132    809  C~0X4j      
2010 06  17.08693  12 38 06.899  -11 10 37.49        120132    809  C~0X4j      
2010 06  17.12024  12 38 06.877  -11 10 37.01        120132    809  C~0X4j      
2012 04  10.17154  12 53 05.89   -13 25 09.6         120132    H06  C~0g0E      
2012 04  10.17426  12 53 05.88   -13 25 09.2         120132    H06  C~0g0E      
2012 04  10.17698  12 53 05.88   -13 25 08.3   20.1V 120132    H06  C~0g0E      

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    -0.21       0.00     1.16
  2   6.3372      0.00    -0.52       0.00    -0.26
  3   9.2779      0.00    -0.28       0.00    -0.35
  4   9.2834      0.00    -0.30       0.00    -0.30
  5  12.2186      0.00    -1.19       0.00     0.63
  6  12.2600      0.00     0.14       0.00     0.01
  7  12.2627      0.00    -0.74       0.00     0.07
  8  13.2533      0.00    -0.20       0.00    -0.01
  9  13.2535      0.00     0.05       0.00    -0.15
 10  13.2537      0.00    -0.01       0.00     0.18
 11  13.2943      0.00     0.32       0.00    -0.04
 12  13.2945      0.00    -0.30       0.00    -0.01
 13  13.2947      0.00     0.58       0.00     0.06
 14  13.3106      0.00     0.12       0.00     0.09
 15  13.3110      0.00     0.08       0.00     0.06
 16  13.3111      0.00     0.34       0.00     0.31
 17  13.3135      0.00     0.43       0.00     0.29
 18  13.3763      0.00     0.13       0.00     0.19
 19  13.3765      0.00     0.68       0.00    -0.11
 20  13.3964      0.00    -0.25       0.00    -0.17
 21  13.3964      0.00     0.47       0.00     0.37
 22  13.3965      0.00     0.25       0.00    -0.31
 23  13.4000      0.00     0.10       0.00    -0.08
 24  13.4000      0.00     0.21       0.00    -0.63
 25  13.4000      0.00     0.06       0.00    -0.60
 26  13.4000      0.00     0.41       0.00     0.18
 27  13.4001      0.00    -0.02       0.00    -0.50
 28  13.4026      0.00     0.99       0.00    -0.21
 29  13.4026      0.00     0.51       0.00     0.84
 30  13.4027      0.00     0.41       0.00     1.42
 31  13.4027      0.00    -0.12       0.00     0.18
 32  13.4027      0.00    -0.06       0.00     1.09
 33  13.4045      0.00     0.49       0.00     0.76
 34  13.4046      0.00     0.04       0.00     0.69
 35  13.4747      0.00     0.41       0.00     0.45
 36  13.4749      0.00    -0.02       0.00     0.38
 37  13.4750      0.00     0.08       0.00     0.06
 38  13.6095      0.00     0.30       0.00    -0.17
 39  14.1946      0.00    -0.05       0.00    -0.18
 40  14.1973      0.00    -0.08       0.00    -0.15
 41  14.2000      0.00     0.31       0.00    -0.23
 42  14.2027      0.00    -0.31       0.00    -0.64
 43  14.2082      0.00    -0.13       0.00    -0.63
 44  14.2109      0.00     0.07       0.00    -0.29
 45  14.3617      0.00     0.09       0.00     0.01
 46  14.3618      0.00     0.16       0.00    -0.02
 47  14.3619      0.00     0.13       0.00     0.03
 48  14.4628      0.00    -0.25       0.00    -0.59
 49  14.4629      0.00    -0.30       0.00    -0.62
 50  15.1610      0.00    -0.05       0.00    -0.32
 51  15.1611      0.00     0.03       0.00    -0.23
 52  15.1640      0.00    -0.18       0.00    -0.29
 53  15.1665      0.00     0.34       0.00    -0.12
 54  15.1666      0.00     0.05       0.00    -0.37
 55  16.3133      0.00    -0.34       0.00    -0.49
 56  16.3134      0.00    -0.27       0.00    -0.35
 57  16.3134      0.00     0.05       0.00    -0.36
 58  20.2507      0.00     0.41       0.00     0.70
 59  20.2510      0.00    -0.30       0.00     0.07
 60  20.2512      0.00     0.22       0.00     0.37
 61  20.5079      0.00    -0.29       0.00     0.20
 62  20.5081      0.00    -0.35       0.00    -0.13
 63  20.5082      0.00    -0.15       0.00     0.10
 64  20.5217      0.00    -0.32       0.00     0.06
 65  20.5217      0.00    -0.32       0.00     0.08
 66  20.5218      0.00    -0.34       0.00     0.18
 67  22.3372      0.00     0.22       0.00    -0.85
 68  22.3372      0.00     0.27       0.00    -0.53
 69  22.3372      0.00     0.47       0.00     0.30

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.

120132    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        49.137    49.137    49.137
ecceobj         0.247     0.247     0.247
incobj         11.795    11.795    11.795
qmin           36.034    36.038    36.037
qmax           63.370    63.466    63.469
amean          49.440    49.443    49.439
amin           48.970    48.961    48.950
amax           49.998    50.011    50.009
emean           0.255     0.255     0.255
emin            0.240     0.241     0.241
emax            0.269     0.270     0.270
imean          12.278    12.278    12.277
imin           11.590    11.586    11.588
imax           12.840    12.844    12.845
excite_mean     0.332     0.332     0.332
fracstop        1.000     1.000     1.000
cjmean          3.030     3.030     3.030

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       180.7     180.5     180.5
kozaiamp        180.0     180.0     180.0