Orbit Fit and Astrometric record for 14BZ57

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: 14BZ57    
# Created Wed Dec 13 02:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   61 observations of   74
# Arc:  12.35y
# First observation: 2002/12/11
#  Last observation: 2015/04/18
Preliminary a, adot, b, bdot, g, gdot:
   0.001421   0.027168   0.000661  -0.011862   0.031570   0.000000
# Chi-squared of fit:     9.78 DOF:  116 RMS:  0.07
# Min/Max residuals:    -0.24    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.592890E-05  2.523887E-02 -6.805042E-06 -1.103836E-02  2.621941E-02 -2.412206E-03
# Covariance matrix:
  2.4577E-13 -2.7974E-14 -1.2906E-15  4.3998E-15  2.0951E-14 -3.0206E-14
 -2.7974E-14  3.7522E-14  1.1935E-14 -1.6516E-14  3.1073E-14  1.1000E-13
 -1.2906E-15  1.1935E-14  2.3550E-13 -2.4926E-14  1.3922E-14  3.6250E-14
  4.3998E-15 -1.6516E-14 -2.4926E-14  9.4532E-15 -1.3302E-14 -5.1008E-14
  2.0951E-14  3.1073E-14  1.3922E-14 -1.3302E-14  9.1718E-14  8.6535E-14
 -3.0206E-14  1.1000E-13  3.6250E-14 -5.1008E-14  8.6535E-14  3.4001E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -13.270504  122.452896    0.672688   -0.163653   -0.693822  2452620.000183
# Heliocentric elements and errors
Epoch:              2452620.5000  =  2002/12/12
Mean Anomaly:          319.88300 +/-     0.008
Argument of Peri:      262.17833 +/-     0.011
Long of Asc Node:      274.36421 +/-     0.000
Inclination:            26.94797 +/-     0.000
Eccentricity:         0.14412474 +/-    0.0000
Semi-Major Axis:     43.16031944 +/-    0.0020
Time of Perihelion: 2464161.7098 +/-       2.2
Perihelion:          36.93984982 +/-    0.0022
Aphelion:            49.38078906 +/-    0.0027
Period (y)              283.5536 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.73607045 +/-    0.0002
Ecliptic Y           32.29112199 +/-    0.0004
Ecliptic Z           -8.75515980 +/-    0.0001
Ecliptic XDOT        -0.00195762 +/-    0.0000
Ecliptic YDOT        -0.00184816 +/-    0.0000
Ecliptic ZDOT        -0.00106383 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.84432854 +/-    0.0003
Geocenter to KBO     38.13968390 +/-    0.0004
# Hcoef:  4.95

The following table shows the complete astrometric record for 14BZ57. 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 (14BZ57) followed by the observatory code and reference code for the source of the astrometry.

2002 12  11.49944  08 06 53.83   +06 39 58.9   20.2R 14BZ57    644  C~1vXC      
2002 12  11.51318  08 06 53.75   +06 39 59.3   20.0R 14BZ57    644  C~1vXC      
2002 12  11.52080  08 06 53.76   +06 39 59.2   20.0R 14BZ57    644  C~1vXC      
2002 12  11.53429  08 06 53.70   +06 39 58.7   20.9R 14BZ57    644  C~1vXC      
2003 01  16.27291  08 04 00.53   +06 40 04.4         14BZ57    644  C~1vXC      
2003 01  16.29860  08 04 00.37   +06 40 04.7   20.2R 14BZ57    644  C~1vXC      
2003 01  16.32929  08 04 00.17   +06 40 04.2         14BZ57    644  C~1vXC      
2003 01  28.202244 08 02 56.30   +06 42 10.9         14BZ57    645  C~1vXC      
2003 01  28.203074 08 02 56.29   +06 42 10.9         14BZ57    645  C~1vXC      
2003 01  28.205561 08 02 56.27   +06 42 10.9         14BZ57    645  C~1vXC      
2003 01  28.317887 08 02 55.70   +06 42 12.0   20.6V 14BZ57    645  C~1vXC      
2003 01  28.318716 08 02 55.69   +06 42 12.0   20.5V 14BZ57    645  C~1vXC      
2003 01  28.321204 08 02 55.68   +06 42 12.0   21.1V 14BZ57    645  C~1vXC      
2012 01  24.35924  08 50 30.803  -02 00 06.47  20.6w 14BZ57    F51  C~1vXC      
2012 01  24.37319  08 50 30.727  -02 00 06.28  20.6w 14BZ57    F51  C~1vXC      
2012 01  24.38717  08 50 30.651  -02 00 06.18  20.7w 14BZ57    F51  C~1vXC      
2012 01  24.40120  08 50 30.577  -02 00 06.00  20.6w 14BZ57    F51  C~1vXC      
2013 02  12.40555  08 54 07.299  -02 54 11.46  20.8g 14BZ57    F51  C~1vXC      
2013 02  12.41838  08 54 07.222  -02 54 11.22  21.0g 14BZ57    F51  C~1vXC      
2013 02  12.43103  08 54 07.159  -02 54 10.95  20.4r 14BZ57    F51  C~1vXC      
2013 02  12.44352  08 54 07.093  -02 54 10.78  20.4r 14BZ57    F51  C~1vXC      
2014 01  24.11315  09 01 16.143  -03 59 11.25  20.4R 14BZ57    809  C~10AS      
2014 01  24.19640  09 01 15.718  -03 59 10.42  20.4R 14BZ57    809  C~10AS      
2014 01  24.28072  09 01 15.264  -03 59 09.81  20.4R 14BZ57    809  C~10AS      
2014 01  30.11221  09 00 44.139  -03 58 00.33  20.4R 14BZ57    809  C~10AS      
2014 01  30.19678  09 00 43.685  -03 57 59.11  20.3R 14BZ57    809  C~10AS      
2014 01  30.28076  09 00 43.224  -03 57 57.99  20.3R 14BZ57    809  C~10AS      
2014 12  16.59334  09 09 32.661  -04 55 41.92  20.8i 14BZ57    F51  C~1vXC      
2014 12  16.60537  09 09 32.622  -04 55 42.33  20.5i 14BZ57    F51  C~1vXC      
2014 12  16.61676  09 09 32.592  -04 55 42.65  20.7i 14BZ57    F51  C~1vXC      
2014 12  16.62818  09 09 32.556  -04 55 42.79  20.6i 14BZ57    F51  C~1vXC      
2014 12  30.49971  09 08 42.157  -04 59 06.34  20.5i 14BZ57    F51  C~1vXC      
2014 12  30.51325  09 08 42.100  -04 59 06.51  20.6i 14BZ57    F51  C~1vXC      
2014 12  30.52682  09 08 42.039  -04 59 06.65  20.4i 14BZ57    F51  C~1vXC      
2014 12  30.54042  09 08 41.978  -04 59 06.71  20.5i 14BZ57    F51  C~1vXC      
2015 01  19.47348  09 07 08.248  -04 59 40.48  20.7w 14BZ57    F51  C~1vXC      
2015 01  19.48481  09 07 08.186  -04 59 40.41  20.6w 14BZ57    F51  C~1vXC      
2015 01  19.49615  09 07 08.129  -04 59 40.36  20.7w 14BZ57    F51  C~1vXC      
2015 01  19.50762  09 07 08.071  -04 59 40.20  20.7w 14BZ57    F51  C~1vXC      
2015 01  21.50351  09 06 57.743  -04 59 27.07  20.6w 14BZ57    F51  C~1vXC      
2015 01  21.51707  09 06 57.671  -04 59 27.00  20.6w 14BZ57    F51  C~1vXC      
2015 01  21.53051  09 06 57.600  -04 59 26.90  20.6w 14BZ57    F51  C~1vXC      
2015 01  21.54394  09 06 57.531  -04 59 26.82  20.6w 14BZ57    F51  C~1vXC      
2015 01  23.39608  09 06 47.862  -04 59 11.92  20.7w 14BZ57    F51  C~1vXC      
2015 01  23.40945  09 06 47.792  -04 59 11.84  20.7w 14BZ57    F51  C~1vXC      
2015 01  23.42278  09 06 47.720  -04 59 11.71  20.6w 14BZ57    F51  C~1vXC      
2015 01  23.43611  09 06 47.650  -04 59 11.60  20.7w 14BZ57    F51  C~1vXC      
2015 01  25.37991  09 06 37.417  -04 58 53.28  20.6w 14BZ57    F51  C~1vXC      
2015 01  25.39298  09 06 37.342  -04 58 53.13  20.6w 14BZ57    F51  C~1vXC      
2015 01  25.40605  09 06 37.272  -04 58 53.03  20.6w 14BZ57    F51  C~1vXC      
2015 01  25.41910  09 06 37.205  -04 58 52.91  20.6w 14BZ57    F51  C~1vXC      
2015 02  18.38301  09 04 29.754  -04 51 47.82  20.7w 14BZ57    F51  C~1vXC      
2015 02  18.39600  09 04 29.687  -04 51 47.60  20.7w 14BZ57    F51  C~1vXC      
2015 02  18.40893  09 04 29.621  -04 51 47.16  20.6w 14BZ57    F51  C~1vXC      
2015 02  18.42190  09 04 29.556  -04 51 46.98  20.6w 14BZ57    F51  C~1vXC      
2015 02  19.40300  09 04 24.512  -04 51 22.57  20.5w 14BZ57    F51  C~1vXC      
2015 02  19.41584  09 04 24.443  -04 51 22.23  20.7w 14BZ57    F51  C~1vXC      
2015 02  19.44141  09 04 24.313  -04 51 21.65  20.8w 14BZ57    F51  C~1vXC      
2015 03  18.34635  09 02 23.961  -04 37 59.98  20.8w 14BZ57    F51  C~1vXC      
2015 03  18.35927  09 02 23.914  -04 37 59.53  20.6w 14BZ57    F51  C~1vXC      
2015 03  18.37225  09 02 23.864  -04 37 59.10  20.7w 14BZ57    F51  C~1vXC      
2015 03  18.38515  09 02 23.815  -04 37 58.67  20.7w 14BZ57    F51  C~1vXC      
2015 03  19.34381  09 02 20.379  -04 37 27.02  20.6w 14BZ57    F51  C~1vXC      
2015 03  19.35678  09 02 20.336  -04 37 26.57  20.7w 14BZ57    F51  C~1vXC      
2015 03  19.36970  09 02 20.287  -04 37 26.15  20.6w 14BZ57    F51  C~1vXC      
2015 03  19.38262  09 02 20.237  -04 37 25.73  20.6w 14BZ57    F51  C~1vXC      
2015 04  16.24640  09 01 15.400  -04 22 11.49  20.8w 14BZ57    F51  C~1vXC      
2015 04  16.25834  09 01 15.382  -04 22 11.11  20.8w 14BZ57    F51  C~1vXC      
2015 04  16.27026  09 01 15.372  -04 22 10.84  20.8w 14BZ57    F51  C~1vXC      
2015 04  16.28216  09 01 15.356  -04 22 10.39  20.8w 14BZ57    F51  C~1vXC      
2015 04  18.24789  09 01 13.585  -04 21 10.35  20.8w 14BZ57    F51  C~1vXC      
2015 04  18.26021  09 01 13.574  -04 21 09.95  20.8w 14BZ57    F51  C~1vXC      
2015 04  18.27254  09 01 13.562  -04 21 09.63  20.8w 14BZ57    F51  C~1vXC      
2015 04  18.28487  09 01 13.552  -04 21 09.22  20.9w 14BZ57    F51  C~1vXC      

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    -0.15       0.00     0.03
  2   0.0000     -1.25 (  -0.63)      0.13 (   0.46)
  3   0.0001     -1.08 (  -0.03)      0.07 (   0.55)
  4   0.0001     -1.85    -0.04      -0.61     0.16
  5   0.0979  -2523.31 (   0.52)   -547.67 (   0.78)
  6   0.0980  -2525.70 (   0.22)   -547.89 (   0.80)
  7   0.0981  -2528.51    -0.09    -549.01    -0.04
  8   0.1306  -3485.39     0.17    -628.13    -0.02
  9   0.1306  -3485.53     0.09    -628.16    -0.05
 10   0.1306  -3485.83    -0.00    -628.22    -0.10
 11   0.1309  -3494.36 (   0.62)   -628.96 (  -0.32)
 12   0.1309  -3494.51 (   0.54)   -628.99 (  -0.34)
 13   0.1309  -3494.65 (   0.59)   -629.02 (  -0.36)
 14   9.1194  46021.33     0.04  -22209.95     0.02
 15   9.1194  46020.11     0.02  -22210.01     0.06
 16   9.1195  46018.92     0.03  -22210.15     0.01
 17   9.1195  46017.74     0.05  -22210.21     0.04
 18  10.1736  50174.45     0.03  -24803.13     0.05
 19  10.1736  50173.19    -0.09  -24803.14    -0.02
 20  10.1737  50172.15    -0.03  -24803.07    -0.01
 21  10.1737  50171.08     0.01  -24803.11    -0.11
 22  11.1201  57884.22 (   0.78) -27426.51 (   0.92)
 23  11.1203  57877.29 (   1.12) -27427.01 (   0.99)
 24  11.1206  57869.95 (   1.18) -27427.84 (   0.74)
 25  11.1365  57360.30 (   1.07) -27455.72 (   0.04)
 26  11.1367  57352.82 (   1.16) -27455.91 (   0.10)
 27  11.1370  57345.25 (   1.13) -27456.23 (   0.03)
 28  12.0139  66712.01    -0.24  -29379.64     0.19
 29  12.0140  66711.49    -0.20  -29380.20     0.00
 30  12.0140  66711.09    -0.08  -29380.63    -0.08
 31  12.0140  66710.55    -0.10  -29380.89     0.02
 32  12.0520  65950.56     0.09  -29753.71    -0.01
 33  12.0521  65949.69     0.11  -29754.06    -0.05
 34  12.0521  65948.74     0.06  -29754.40    -0.08
 35  12.0521  65947.77    -0.01  -29754.66    -0.02
 36  12.1067  64446.75     0.09  -30085.55     0.01
 37  12.1067  64445.74     0.04  -30085.67     0.01
 38  12.1068  64444.81     0.09  -30085.80    -0.00
 39  12.1068  64443.83     0.09  -30085.82     0.10
 40  12.1123  64274.32     0.02  -30104.60     0.05
 41  12.1123  64273.15     0.02  -30104.75     0.02
 42  12.1123  64271.98     0.02  -30104.87     0.02
 43  12.1124  64270.85     0.06  -30105.01     0.00
 44  12.1174  64111.54    -0.02  -30119.86     0.03
 45  12.1175  64110.39     0.01  -30120.00    -0.00
 46  12.1175  64109.20    -0.01  -30120.09     0.01
 47  12.1176  64108.05     0.01  -30120.19     0.01
 48  12.1229  63938.84     0.07  -30133.25     0.05
 49  12.1229  63937.60    -0.01  -30133.33     0.06
 50  12.1229  63936.45     0.00  -30133.44     0.03
 51  12.1230  63935.34     0.06  -30133.53     0.03
 52  12.1886  61782.32    -0.01  -30090.92    -0.02
 53  12.1886  61781.19     0.03  -30090.90    -0.12
 54  12.1887  61780.02     0.03  -30090.65     0.02
 55  12.1887  61778.93     0.11  -30090.67    -0.12
 56  12.1914  61691.98     0.04  -30081.10    -0.01
 57  12.1914  61690.79     0.00  -30080.96     0.00
 58  12.1915  61688.56     0.07  -30080.77    -0.05
 59  12.2652  59562.58    -0.08  -29625.92    -0.08
 60  12.2652  59561.72    -0.07  -29625.60    -0.05
 61  12.2652  59560.81    -0.09  -29625.31    -0.05
 62  12.2653  59559.92    -0.11  -29625.02    -0.05
 63  12.2679  59497.12    -0.10  -29602.98    -0.11
 64  12.2679  59496.32    -0.03  -29602.65    -0.08
 65  12.2680  59495.43    -0.06  -29602.37    -0.09
 66  12.2680  59494.53    -0.11  -29602.09    -0.11
 67  12.3443  58229.36     0.06  -28858.44     0.09
 68  12.3443  58228.97    -0.02  -28858.10     0.09
 69  12.3443  58228.75     0.06  -28857.85    -0.00
 70  12.3444  58228.38    -0.01  -28857.44     0.08
 71  12.3498  58184.80     0.02  -28800.81     0.07
 72  12.3498  58184.53     0.02  -28800.43     0.10
 73  12.3498  58184.25     0.01  -28800.14     0.04
 74  12.3499  58183.99     0.02  -28799.74     0.08

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.

14BZ57    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.866    42.872    42.860
ecceobj         0.138     0.138     0.138
incobj         26.972    26.972    26.972
qmin           36.437    36.439    36.427
qmax           49.609    49.568    49.610
amean          42.887    42.887    42.882
amin           42.531    42.529    42.539
amax           43.270    43.268    43.258
emean           0.133     0.131     0.131
emin            0.120     0.116     0.115
emax            0.147     0.147     0.148
imean          28.714    28.738    28.749
imin           28.371    28.377    28.366
imax           29.024    29.077    29.098
excite_mean     0.499     0.498     0.499
fracstop        1.000     1.000     1.000
cjmean          2.776     2.776     2.776

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       184.3     181.0     176.9
kozaiamp        180.0     180.0     180.0