Orbit Fit and Astrometric record for 01RZ143

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: 01RZ143   
# Created Thu Dec 14 02:37:09 2017
# Orbit generated from Bernstein formalism
# Fitting   57 observations of   60
# Arc:  11.34y
# First observation: 2001/09/12
#  Last observation: 2013/01/14
Preliminary a, adot, b, bdot, g, gdot:
   0.000394   0.025261  -0.000014   0.000918   0.026356   0.000000
# Chi-squared of fit:    75.87 DOF:  108 RMS:  0.20
# Min/Max residuals:    -0.72    0.44
# Exact a, adot, b, bdot, g, gdot:
  1.549435E-05  2.475683E-02  1.248742E-07  9.011109E-04  2.464837E-02 -2.680249E-04
# Covariance matrix:
  1.2784E-13 -3.1209E-14  8.1873E-16 -8.6369E-16  1.7511E-14 -8.3922E-14
 -3.1209E-14  3.1323E-14 -1.1238E-15  1.1550E-15  1.8583E-14  1.1011E-13
  8.1873E-16 -1.1238E-15  9.9588E-14 -1.0075E-14 -6.3982E-16 -4.1395E-15
 -8.6369E-16  1.1550E-15 -1.0075E-14  1.3915E-15  6.0654E-16  4.2646E-15
  1.7511E-14  1.8583E-14 -6.3982E-16  6.0654E-16  8.1917E-14  5.4167E-14
 -8.3922E-14  1.1011E-13 -4.1395E-15  4.2646E-15  5.4167E-14  4.0726E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.378866   19.074745    0.498693    0.005647   -0.872480  2452164.882433
# Heliocentric elements and errors
Epoch:              2452160.5000  =  2001/09/08
Mean Anomaly:          339.66000 +/-     0.021
Argument of Peri:       33.35280 +/-     0.025
Long of Asc Node:        8.34389 +/-     0.001
Inclination:             2.12453 +/-     0.000
Eccentricity:         0.06871077 +/-    0.0000
Semi-Major Axis:     44.27510680 +/-    0.0021
Time of Perihelion: 2458240.2576 +/-       6.4
Perihelion:          41.23292992 +/-    0.0024
Aphelion:            47.31728367 +/-    0.0026
Period (y)              294.6101 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.33203856 +/-    0.0004
Ecliptic Y           13.07821458 +/-    0.0002
Ecliptic Z            0.26829173 +/-    0.0000
Ecliptic XDOT        -0.00093610 +/-    0.0000
Ecliptic YDOT         0.00259001 +/-    0.0000
Ecliptic ZDOT         0.00010010 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.45022237 +/-    0.0004
Geocenter to KBO     40.57063210 +/-    0.0005
# Hcoef:  6.49

The following table shows the complete astrometric record for 01RZ143. 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 (01RZ143) followed by the observatory code and reference code for the source of the astrometry.

2001 09  12.38169  01 09 49.64   +07 49 11.3   22.2R 01RZ143   695  Ce0436      
2001 09  12.46978  01 09 49.30   +07 49 09.1         01RZ143   695  Ce0436      
2001 10  19.36533  01 07 06.35   +07 32 58.3   22.3R 01RZ143   695  Ce0436      
2001 10  19.41195  01 07 06.13   +07 32 56.9         01RZ143   695  Ce0436      
2001 10  20.36415  01 07 01.78   +07 32 30.9         01RZ143   695  Ce0436      
2001 11  03.05981  01 06 01.89   +07 26 28.2   21.6  01RZ143   304  Ce6603      
2001 11  03.10588  01 06 01.68   +07 26 27.2         01RZ143   304  Ce6603      
2001 12  16.07618  01 03 56.93   +07 13 45.1   20.1  01RZ143   304  Ce9438      
2001 12  16.10829  01 03 56.87   +07 13 44.5         01RZ143   304  Ce9438      
2002 09  09.41463  01 15 15.74   +08 25 26.6   22.1R 01RZ143   662  Cg3223      
2002 09  09.48216  01 15 15.48   +08 25 25.1         01RZ143   662  Cg3223      
2002 09  11.60789  01 15 07.54   +08 24 38.9   21.9R 01RZ143   568  Cg1159      
2002 09  12.60054  01 15 03.74   +08 24 16.7   22.0R 01RZ143   568  Cg1159      
2003 09  28.39890  01 19 14.27   +08 52 55.0   22.3R 01RZ143   688  Ci6182      
2003 09  28.46171  01 19 14.00   +08 52 53.2         01RZ143   688  Ci6182      
2005 09  04.96170  01 31 16.48   +10 10 11.4   22.9R 01RZ143   250  S~06AQ      
2005 09  04.96842  01 31 16.46   +10 10 11.2         01RZ143   250  S~06AQ      
2005 09  04.97513  01 31 16.43   +10 10 11.1         01RZ143   250  S~06AQ      
2005 09  29.34051  01 29 41.67   +10 01 22.5   22.7R 01RZ143   688  Co3571      
2005 09  29.44917  01 29 41.14   +10 01 18.8         01RZ143   688  Co3571      
2008 10  29.395319 01 43 22.51   +11 29 55.4   22.9V 01RZ143   645  C~2Jx5      
2008 10  29.396148 01 43 22.51   +11 29 55.7   22.0V 01RZ143   645  C~2Jx5      
2008 10  29.398636 01 43 22.50   +11 29 55.6   23.5V 01RZ143   645  C~2Jx5      
2008 11  02.381917 01 43 04.02   +11 28 12.6   22.3V 01RZ143   645  C~2Jx5      
2008 11  02.382746 01 43 04.03   +11 28 12.6   22.1V 01RZ143   645  C~2Jx5      
2008 11  02.385234 01 43 04.02   +11 28 12.6   23.1V 01RZ143   645  C~2Jx5      
2010 12  02.22263  01 51 50.37   +12 23 23.6   22.7R 01RZ143   688  C~0Pg9      
2010 12  02.30303  01 51 50.10   +12 23 20.9         01RZ143   688  C~0Pg9      
2011 08  29.48565  02 03 41.939  +13 29 23.64  22.7r 01RZ143   568  C~1C5q      
2011 08  29.53760  02 03 41.823  +13 29 23.12  22.8r 01RZ143   568  C~1C5q      
2011 08  29.58466  02 03 41.715  +13 29 22.72  22.8r 01RZ143   568  C~1C5q      
2011 09  05.52418  02 03 24.787  +13 28 04.46  22.8r 01RZ143   568  C~1C5q      
2011 10  24.40337  02 00 06.928  +13 11 24.41  22.5r 01RZ143   568  C~1C5q      
2011 10  24.44610  02 00 06.718  +13 11 23.28  22.6r 01RZ143   568  C~1C5q      
2011 10  24.48881  02 00 06.509  +13 11 22.21  22.6r 01RZ143   568  C~1C5q      
2011 10  29.30680  01 59 43.448  +13 09 20.28  22.5r 01RZ143   568  C~1C5q      
2011 10  30.30008  01 59 38.698  +13 08 55.08  22.7r 01RZ143   568  C~1C5q      
2011 10  30.52443  01 59 37.596  +13 08 49.54  22.7r 01RZ143   568  C~1C5q      
2011 10  31.50734  01 59 32.909  +13 08 24.60  22.7r 01RZ143   568  C~1C5q      
2011 11  24.29629  01 57 46.472  +12 58 53.34  22.7r 01RZ143   568  C~1C5q      
2011 11  30.34253  01 57 23.154  +12 56 45.74  22.7r 01RZ143   568  C~1C5q      
2011 11  30.35120  01 57 23.120  +12 56 45.54  22.8r 01RZ143   568  C~1C5q      
2012 01  25.28222  01 56 03.362  +12 48 51.22  23.0r 01RZ143   568  C~1C5q      
2012 01  26.26707  01 56 04.561  +12 48 56.83  22.9r 01RZ143   568  C~1C5q      
2012 01  27.32416  01 56 05.948  +12 49 03.30  22.9r 01RZ143   568  C~1C5q      
2012 08  17.56010  02 09 25.843  +14 02 08.18  22.8r 01RZ143   568  C~1C5q      
2012 08  22.61568  02 09 19.221  +14 01 43.11  22.8r 01RZ143   568  C~1C5q      
2012 08  24.51776  02 09 16.159  +14 01 30.61  22.7r 01RZ143   568  C~1C5q      
2012 10  17.36532  02 06 06.142  +13 46 10.52  22.7r 01RZ143   568  C~1C5q      
2012 10  20.46016  02 05 51.391  +13 44 55.20  22.6r 01RZ143   568  C~1C5q      
2012 12  17.05921  02 01 54.19   +13 23 55.5   22.6R 01RZ143   304  C~0snW      
2012 12  17.12233  02 01 54.01   +13 23 54.7         01RZ143   304  C~0snW      
2012 12  17.15769  02 01 53.95   +13 23 54.1         01RZ143   304  C~0snW      
2012 12  18.05729  02 01 51.71   +13 23 41.4         01RZ143   304  C~0snW      
2012 12  18.09375  02 01 51.59   +13 23 41.1         01RZ143   304  C~0snW      
2012 12  18.14896  02 01 51.45   +13 23 40.3         01RZ143   304  C~0snW      
2012 12  19.06103  02 01 49.26   +13 23 27.7         01RZ143   304  C~0snW      
2012 12  19.10866  02 01 49.13   +13 23 27.3         01RZ143   304  C~0snW      
2012 12  19.15396  02 01 49.03   +13 23 26.3         01RZ143   304  C~0snW      
2013 01  14.35870  02 01 17.643  +13 20 15.23        01RZ143   568  C~1C5q      

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     0.08       0.00     0.09
  2   0.0002     -5.51     0.16      -0.12    -0.13
  3   0.1013  -2615.14    -0.14      22.96     0.30
  4   0.1014  -2618.70    -0.25      22.91     0.22
  5   0.1040  -2688.42    -0.55      23.51     0.43
  6   0.1415  -3650.34     0.08      27.77    -0.26
  7   0.1416  -3653.61    -0.06      28.04    -0.03
  8   0.2593  -5660.96     0.39      32.79     0.20
  9   0.2593  -5662.01     0.02      32.57    -0.02
 10   0.9912   5306.55     0.04     183.89     0.22
 11   0.9914   5302.41    -0.06     183.95     0.20
 12   0.9972   5175.79     0.26     185.50    -0.12
 13   0.9999   5115.15     0.14     186.16    -0.28
 14   2.0425   9208.77     0.01     385.08    -0.13
 15   2.0427   9204.38     0.10     384.91    -0.37
 16   3.9797  20914.76 (   1.22)    741.69 (   0.80)
 17   3.9797  20914.40 (   1.21)    741.61 (   0.72)
 18   3.9797  20913.95 (   1.10)    741.68 (   0.78)
 19   4.0464  19403.90     0.24     762.46     0.27
 20   4.0467  19395.18    -0.72     761.89    -0.42
 21   7.1294  32818.65    -0.04    1346.77    -0.34
 22   7.1294  32818.76     0.13    1347.05    -0.06
 23   7.1294  32818.58     0.15    1347.01    -0.10
 24   7.1403  32520.77    -0.03    1347.54    -0.07
 25   7.1403  32520.91     0.17    1347.49    -0.12
 26   7.1403  32520.77     0.22    1347.54    -0.07
 27   9.2206  41186.54     0.11    1728.64     0.44
 28   9.2209  41181.70    -0.13    1727.46    -0.72
 29   9.9606  52898.07    -0.23    1881.91    -0.01
 30   9.9607  52896.18    -0.23    1881.99    -0.03
 31   9.9609  52894.46    -0.24    1882.15     0.03
 32   9.9799  52618.69     0.03    1892.20     0.15
 33  10.1137  49375.88     0.05    1932.86     0.29
 34  10.1138  49372.43     0.01    1932.85     0.24
 35  10.1139  49369.01    -0.00    1932.88     0.25
 36  10.1271  48990.42     0.09    1933.16    -0.25
 37  10.1298  48912.45     0.03    1933.16    -0.36
 38  10.1304  48894.47    -0.10    1933.46    -0.18
 39  10.1331  48817.51    -0.13    1933.39    -0.32
 40  10.1983  47071.07     0.01    1928.86     0.06
 41  10.2148  46688.30     0.18    1925.95     0.15
 42  10.2148  46687.74     0.16    1925.93     0.13
 43  10.3680  45366.68    -0.11    1880.80    -0.01
 44  10.3707  45385.96    -0.10    1880.01     0.00
 45  10.3736  45408.27    -0.14    1879.06    -0.08
 46  10.9300  58671.44     0.08    2062.41     0.09
 47  10.9438  58564.22     0.16    2071.06     0.10
 48  10.9490  58514.32     0.16    2074.18     0.11
 49  11.0965  55376.83     0.13    2131.42     0.11
 50  11.1049  55132.75     0.09    2132.51     0.05
 51  11.2626  51207.01    -0.07    2111.96     0.01
 52  11.2628  51204.10    -0.24    2112.10     0.18
 53  11.2629  51203.01     0.20    2111.82    -0.07
 54  11.2654  51165.79     0.23    2110.93    -0.15
 55  11.2655  51163.94    -0.09    2111.25     0.19
 56  11.2656  51161.61    -0.10    2111.19     0.17
 57  11.2681  51125.16    -0.01    2110.14    -0.05
 58  11.2682  51123.12    -0.11    2110.42     0.25
 59  11.2684  51121.30    -0.09    2109.96    -0.18
 60  11.3401  50595.36     0.06    2084.96    -0.02

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.

01RZ143    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.455    44.461    44.449
ecceobj         0.072     0.072     0.071
incobj          2.118     2.118     2.118
qmin           40.182    40.202    40.174
qmax           48.216    48.246    48.186
amean          44.107    44.113    44.099
amin           43.758    43.769    43.762
amax           44.483    44.473    44.463
emean           0.069     0.069     0.068
emin            0.052     0.052     0.052
emax            0.085     0.085     0.085
imean           2.432     2.433     2.431
imin            1.641     1.644     1.638
imax            3.113     3.112     3.113
excite_mean     0.081     0.081     0.081
fracstop        1.000     1.000     1.000
cjmean          3.095     3.095     3.095

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       180.1     180.0     180.2
kozaiamp        180.0     180.0     180.0