Orbit Fit and Astrometric record for 14QW441

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: 14QW441   
# Created Mon Oct 23 01:38:28 2017
# Orbit generated from Bernstein formalism
# Fitting   70 observations of   75
# Arc:  13.81y
# First observation: 2009/10/15
#  Last observation: 2015/07/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.016794   0.025631   0.010024  -0.014123   0.028774   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# Chi-squared of fit:  9999.99 DOF:  134 RMS:  9.10
# Min/Max residuals:   -10.94   22.21
# Exact a, adot, b, bdot, g, gdot:
 -5.780099E-04  2.328167E-02  3.253629E-04 -1.276260E-02  2.558819E-02 -1.046033E-03
# Covariance matrix:
  2.8816E-11 -5.1729E-12 -1.5445E-11  2.8058E-12 -3.3509E-12 -9.3119E-12
 -5.1729E-12  9.3838E-13  2.8260E-12 -5.1338E-13  6.1968E-13  1.7038E-12
 -1.5445E-11  2.8260E-12  9.5261E-12 -1.6364E-12  1.8958E-12  5.1692E-12
  2.8058E-12 -5.1338E-13 -1.6364E-12  2.8962E-13 -3.4458E-13 -9.3908E-13
 -3.3509E-12  6.1968E-13  1.8958E-12 -3.4458E-13  5.2334E-13  1.1431E-12
 -9.3119E-12  1.7038E-12  5.1692E-12 -9.3908E-13  1.1431E-12  3.1165E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.152092  -21.352799   -0.183136    0.036972   -0.987503  2452164.702423
# Heliocentric elements and errors
Epoch:              2452160.5000  =  2001/09/08
Mean Anomaly:          339.82721 +/-     0.031
Argument of Peri:      200.26040 +/-     0.038
Long of Asc Node:      162.73843 +/-     0.000
Inclination:            28.81924 +/-     0.000
Eccentricity:         0.10061283 +/-    0.0000
Semi-Major Axis:     44.17979698 +/-    0.0028
Time of Perihelion: 2458170.8184 +/-       9.3
Perihelion:          39.73474256 +/-    0.0032
Aphelion:            48.62485140 +/-    0.0037
Period (y)              293.6593 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.35308794 +/-    0.0011
Ecliptic Y          -14.42412323 +/-    0.0003
Ecliptic Z            1.48030062 +/-    0.0001
Ecliptic XDOT         0.00084195 +/-    0.0000
Ecliptic YDOT         0.00234317 +/-    0.0000
Ecliptic ZDOT        -0.00136858 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.06868852 +/-    0.0010
Geocenter to KBO     39.08054129 +/-    0.0011
# Hcoef:  5.23

The following table shows the complete astrometric record for 14QW441. 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 (14QW441) followed by the observatory code and reference code for the source of the astrometry.

2001 09  12.20168  22 37 49.74   -06 19 53.0   22.3V 14QW441   691  C~1vXh      
2001 09  12.22305  22 37 49.67   -06 19 53.6   22.0V 14QW441   691  C~1vXh      
2001 09  12.24485  22 37 49.58   -06 19 54.4   21.8V 14QW441   691  C~1vXh      
2003 10  22.12939  22 47 26.19   -07 01 52.8   20.5R 14QW441   695  C~1vXh      
2003 10  22.21395  22 47 25.95   -07 01 54.9         14QW441   695  C~1vXh      
2009 10  15.169442 23 24 21.25   -07 56 47.4   21.0V 14QW441   645  C~1vXh      
2009 10  15.170271 23 24 21.25   -07 56 47.4   20.9V 14QW441   645  C~1vXh      
2009 10  15.172759 23 24 21.23   -07 56 47.4   21.4V 14QW441   645  C~1vXh      
2010 08  31.47636  23 33 49.488  -07 39 15.43  20.9i 14QW441   F51  C~1vXh      
2010 08  31.48732  23 33 49.432  -07 39 15.91  20.8i 14QW441   F51  C~1vXh      
2010 08  31.50166  23 33 49.369  -07 39 16.60  21.1r 14QW441   F51  C~1vXh      
2010 08  31.51345  23 33 49.312  -07 39 16.97  21.0r 14QW441   F51  C~1vXh      
2010 09  15.45215  23 32 41.684  -07 48 38.07  21.0w 14QW441   F51  C~1vXh      
2010 09  15.46196  23 32 41.641  -07 48 38.44  20.9w 14QW441   F51  C~1vXh      
2010 09  15.47212  23 32 41.592  -07 48 38.73  21.0w 14QW441   F51  C~1vXh      
2010 09  15.48224  23 32 41.549  -07 48 39.12  20.9w 14QW441   F51  C~1vXh      
2010 09  16.49248  23 32 36.910  -07 49 16.43  21.0w 14QW441   F51  C~1vXh      
2010 09  16.50392  23 32 36.857  -07 49 16.78  20.9w 14QW441   F51  C~1vXh      
2010 09  16.51547  23 32 36.804  -07 49 17.22  20.8w 14QW441   F51  C~1vXh      
2010 09  16.52693  23 32 36.750  -07 49 17.64  20.8w 14QW441   F51  C~1vXh      
2012 08  14.49239  23 47 19.714  -07 44 41.19  21.2w 14QW441   F51  C~1vXh      
2012 08  14.50745  23 47 19.649  -07 44 41.90  21.0w 14QW441   F51  C~1vXh      
2012 08  14.52249  23 47 19.589  -07 44 42.40  21.3w 14QW441   F51  C~1vXh      
2012 08  14.53756  23 47 19.527  -07 44 43.05  21.1w 14QW441   F51  C~1vXh      
2013 01  07.21934  23 41 48.221  -08 26 50.80  21.3w 14QW441   F51  C~1vXh      
2013 01  07.22465  23 41 48.239  -08 26 50.74  21.2w 14QW441   F51  C~1vXh      
2013 01  07.22995  23 41 48.250  -08 26 51.00  21.3w 14QW441   F51  C~1vXh      
2013 08  14.49808  23 53 31.999  -07 51 53.08  21.0w 14QW441   F51  C~1vXh      
2013 08  14.51212  23 53 31.951  -07 51 53.60  21.1w 14QW441   F51  C~1vXh      
2013 08  14.52620  23 53 31.898  -07 51 54.22  21.1w 14QW441   F51  C~1vXh      
2013 08  14.54023  23 53 31.848  -07 51 54.71  21.1w 14QW441   F51  C~1vXh      
2013 10  10.33845  23 49 26.652  -08 26 38.41  21.0r 14QW441   F51  C~1vXh      
2013 10  10.35139  23 49 26.597  -08 26 38.64  20.9r 14QW441   F51  C~1vXh      
2013 10  10.36296  23 49 26.545  -08 26 38.94  21.4g 14QW441   F51  C~1vXh      
2013 10  10.37453  23 49 26.493  -08 26 39.34  21.3g 14QW441   F51  C~1vXh      
2013 10  21.31804  23 48 42.296  -08 31 49.19  21.1r 14QW441   F51  C~1vXh      
2013 10  21.32850  23 48 42.235  -08 31 49.26  21.1r 14QW441   F51  C~1vXh      
2013 10  21.34000  23 48 42.202  -08 31 49.60  20.8i 14QW441   F51  C~1vXh      
2013 10  21.35162  23 48 42.157  -08 31 50.09  20.7i 14QW441   F51  C~1vXh      
2014 08  20.48317  23 59 23.115  -08 02 29.75  21.1w 14QW441   F51  C~1vXh      
2014 08  20.49535  23 59 23.071  -08 02 30.13  21.0w 14QW441   F51  C~1vXh      
2014 08  20.50752  23 59 23.025  -08 02 30.65  21.0w 14QW441   F51  C~1vXh      
2014 08  20.51970  23 59 22.977  -08 02 31.14  21.1w 14QW441   F51  C~1vXh      
2014 08  22.51873  23 59 15.462  -08 03 47.14  21.1w 14QW441   F51  C~1vXi      
2014 08  22.52992  23 59 15.420  -08 03 47.60  21.0w 14QW441   F51  C~1vXi      
2014 08  22.54108  23 59 15.376  -08 03 48.01  21.1w 14QW441   F51  C~1vXi      
2014 08  22.55228  23 59 15.336  -08 03 48.44  21.1w 14QW441   F51  C~1vXi      
2014 09  14.44214  23 57 37.986  -08 18 35.72  21.0i 14QW441   F51  C~1vXi      
2014 09  14.45378  23 57 37.928  -08 18 35.95  20.9i 14QW441   F51  C~1vXi      
2014 09  14.46544  23 57 37.866  -08 18 36.31  20.8i 14QW441   F51  C~1vXi      
2014 09  14.47706  23 57 37.797  -08 18 36.98  21.0i 14QW441   F51  C~1vXi      
2014 09  17.34347  23 57 24.710  -08 20 26.03  21.2w 14QW441   F51  C~1vXi      
2014 09  17.35533  23 57 24.659  -08 20 26.36  21.1w 14QW441   F51  C~1vXi      
2014 09  17.36718  23 57 24.598  -08 20 26.90  21.1w 14QW441   F51  C~1vXi      
2014 09  17.37903  23 57 24.544  -08 20 27.34  21.0w 14QW441   F51  C~1vXi      
2014 09  17.44814  23 57 24.222  -08 20 29.94  21.0w 14QW441   F51  C~1vXi      
2014 09  17.46088  23 57 24.163  -08 20 30.42  21.1w 14QW441   F51  C~1vXi      
2014 09  17.47516  23 57 24.095  -08 20 30.88  21.1w 14QW441   F51  C~1vXi      
2014 09  17.48786  23 57 24.033  -08 20 31.44  21.1w 14QW441   F51  C~1vXi      
2014 09  19.33732  23 57 15.540  -08 21 41.01  21.0w 14QW441   F51  C~1vXi      
2014 09  19.34877  23 57 15.489  -08 21 41.50  21.1w 14QW441   F51  C~1vXi      
2014 09  19.36020  23 57 15.440  -08 21 41.95  21.1w 14QW441   F51  C~1vXi      
2014 09  19.37167  23 57 15.385  -08 21 42.40  21.0w 14QW441   F51  C~1vXi      
2014 09  22.46212  23 57 01.141  -08 23 37.41  21.3w 14QW441   F51  C~1vXi      
2014 09  22.47492  23 57 01.074  -08 23 37.77  21.1w 14QW441   F51  C~1vXi      
2014 09  22.48773  23 57 01.021  -08 23 38.27  21.2w 14QW441   F51  C~1vXi      
2014 09  22.50054  23 57 00.956  -08 23 38.73  21.1w 14QW441   F51  C~1vXi      
2014 09  29.35694  23 56 29.426  -08 27 45.22  21.1w 14QW441   F51  C~1vXi      
2014 09  29.36850  23 56 29.372  -08 27 45.63  20.8w 14QW441   F51  C~1vXi      
2014 09  29.38007  23 56 29.328  -08 27 46.00  20.5w 14QW441   F51  C~1vXi      
2014 09  29.39166  23 56 29.259  -08 27 46.34  20.7w 14QW441   F51  C~1vXi      
2015 07  04.58109  00 07 06.028  -07 45 08.29  20.9i 14QW441   F51  C~1vXi      
2015 07  04.58793  00 07 06.009  -07 45 08.61  20.7i 14QW441   F51  C~1vXi      
2015 07  04.59477  00 07 06.021  -07 45 08.79  21.0i 14QW441   F51  C~1vXi      
2015 07  04.60165  00 07 06.006  -07 45 08.80  20.7i 14QW441   F51  C~1vXi      

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 ( 122.19)      0.00 ( -68.74)
  2   0.0001     -1.19 ( 122.63)     -0.17 ( -68.74)
  3   0.0001     -2.74 ( 122.75)     -0.41 ( -68.82)
  4   2.1079   7020.93 (  85.74)  -5559.65 ( -43.59)
  5   2.1082   7016.82 (  85.70)  -5560.24 ( -43.55)
  6   8.0903  36633.78    11.53  -21621.59    -5.20
  7   8.0903  36633.78    11.59  -21621.59    -5.20
  8   8.0903  36633.49    11.47  -21621.47    -5.07
  9   8.9672  45197.65     4.22  -24187.10    -3.11
 10   8.9672  45196.65     4.09  -24187.19    -3.13
 11   8.9673  45195.45     4.05  -24187.45    -3.28
 12   8.9673  45194.48     4.02  -24187.43    -3.18
 13   9.0082  43988.84     5.15  -24288.74    -2.98
 14   9.0082  43988.07     5.19  -24288.81    -3.01
 15   9.0083  43987.24     5.21  -24288.78    -2.92
 16   9.0083  43986.46     5.26  -24288.87    -2.96
 17   9.0111  43904.36     5.35  -24294.74    -3.00
 18   9.0111  43903.45     5.39  -24294.73    -2.93
 19   9.0111  43902.51     5.39  -24294.81    -2.95
 20   9.0112  43901.56     5.39  -24294.86    -2.95
 21  10.9221  56930.86     2.96  -29772.23    -2.21
 22  10.9221  56929.59     2.75  -29772.47    -2.31
 23  10.9222  56928.49     2.70  -29772.55    -2.23
 24  10.9222  56927.29     2.55  -29772.76    -2.29
 25  11.3211  50975.66     5.94  -29991.32    -2.87
 26  11.3211  50975.94     5.95  -29991.38    -2.93
 27  11.3211  50976.00     5.73  -29991.70    -3.26
 28  11.9214  62324.55     6.58  -32707.37    -3.88
 29  11.9215  62323.60     6.61  -32707.54    -3.90
 30  11.9215  62322.53     6.52  -32707.78    -3.98
 31  11.9215  62321.56     6.53  -32707.91    -3.96
 32  12.0770  57750.63     7.68  -33041.87    -4.36
 33  12.0771  57749.71     7.77  -33041.71    -4.20
 34  12.0771  57748.80     7.77  -33041.65    -4.14
 35  12.0771  57747.86     7.73  -33041.68    -4.17
 36  12.1071  56957.95     7.86  -33039.84    -4.45
 37  12.1071  56957.02     7.64  -33039.49    -4.12
 38  12.1072  56956.38     7.79  -33039.60    -4.24
 39  12.1072  56955.50     7.71  -33039.76    -4.42
 40  12.9371  67391.38    13.21  -35765.30    -7.04
 41  12.9371  67390.54    13.28  -35765.36    -6.97
 42  12.9372  67389.61    13.25  -35765.54    -7.03
 43  12.9372  67388.66    13.21  -35765.68    -7.05
 44  12.9427  67240.15    13.25  -35786.62    -7.02
 45  12.9427  67239.31    13.26  -35786.77    -7.07
 46  12.9427  67238.45    13.26  -35786.86    -7.05
 47  12.9428  67237.65    13.31  -35787.00    -7.08
 48  13.0054  65362.10    13.08  -35964.52    -7.74
 49  13.0055  65361.12    13.12  -35964.34    -7.51
 50  13.0055  65360.02    13.03  -35964.25    -7.37
 51  13.0055  65358.67    12.71  -35964.42    -7.48
 52  13.0134  65111.78    12.94  -35978.47    -7.54
 53  13.0134  65110.86    13.06  -35978.43    -7.46
 54  13.0135  65109.70    12.93  -35978.52    -7.50
 55  13.0135  65108.68    12.96  -35978.57    -7.50
 56  13.0137  65102.65    12.99  -35978.84    -7.50
 57  13.0137  65101.54    13.00  -35978.89    -7.50
 58  13.0138  65100.31    13.01  -35978.86    -7.41
 59  13.0138  65099.12    12.94  -35978.97    -7.47
 60  13.0189  64939.52    12.98  -35986.94    -7.40
 61  13.0189  64938.53    12.99  -35987.06    -7.48
 62  13.0189  64937.59    13.05  -35987.15    -7.53
 63  13.0189  64936.55    13.02  -35987.20    -7.54
 64  13.0274  64669.78    13.24  -35998.98    -7.77
 65  13.0274  64668.60    13.18  -35998.86    -7.61
 66  13.0275  64667.58    13.28  -35998.98    -7.69
 67  13.0275  64666.39    13.21  -35998.97    -7.65
 68  13.0463  64080.13    13.33  -36017.34    -7.50
 69  13.0463  64079.13    13.33  -36017.36    -7.51
 70  13.0463  64078.30    13.49  -36017.41    -7.54
 71  13.0464  64077.10    13.30  -36017.26    -7.37
 72  13.8080  75042.04    22.21  -38061.99   -10.76
 73  13.8080  75041.60    21.83  -38062.16   -10.81
 74  13.8081  75041.71    22.01  -38062.43   -10.94
 75  13.8081  75041.47    21.83  -38062.33   -10.70

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.

14QW441    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.536    44.536    44.536
ecceobj         0.108     0.108     0.108
incobj         28.752    28.752    28.752
qmin           38.885    38.877    38.886
qmax           50.102    50.131    50.111
amean          44.351    44.351    44.351
amin           44.007    44.001    43.999
amax           44.733    44.737    44.737
emean           0.107     0.107     0.107
emin            0.094     0.094     0.094
emax            0.121     0.121     0.121
imean          27.990    27.990    27.990
imin           27.694    27.691    27.694
imax           28.302    28.304    28.303
excite_mean     0.481     0.481     0.481
fracstop        1.000     1.000     1.000
cjmean          2.810     2.810     2.810

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       196.6     196.6     196.6
kozaiamp        180.0     180.0     180.0