Orbit Fit and Astrometric record for 01RX143

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: 01RX143   
# Created Sun Dec 17 02:37:09 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   34
# Arc:  16.03y
# First observation: 2001/09/12
#  Last observation: 2017/09/23
Preliminary a, adot, b, bdot, g, gdot:
   0.001263   0.020774   0.000501   0.007203   0.024809   0.000000
# Chi-squared of fit:    68.91 DOF:   54 RMS:  0.27
# Min/Max residuals:    -0.93    0.54
# Exact a, adot, b, bdot, g, gdot:
  1.388956E-05  2.212275E-02  4.339953E-06  7.704408E-03  2.526395E-02  7.474179E-03
# Covariance matrix:
  1.5606E-13 -2.5411E-14  7.0573E-15 -5.8538E-15  9.6217E-14 -5.4231E-14
 -2.5411E-14  2.1304E-14 -8.6002E-15  6.8461E-15  1.5029E-14  6.3169E-14
  7.0573E-15 -8.6002E-15  8.5098E-14 -1.1334E-14 -8.0502E-15 -2.8526E-14
 -5.8538E-15  6.8461E-15 -1.1334E-14  4.6988E-15  5.9722E-15  2.2697E-14
  9.6217E-14  1.5029E-14 -8.0502E-15  5.9722E-15  2.1467E-13  5.4701E-14
 -5.4231E-14  6.3169E-14 -2.8526E-14  2.2697E-14  5.4701E-14  2.0941E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.485808   14.181989    0.422744   -0.039667   -0.910867  2452164.864523
# Heliocentric elements and errors
Epoch:              2452160.5000  =  2001/09/08
Mean Anomaly:           78.73454 +/-     0.019
Argument of Peri:      240.40274 +/-     0.010
Long of Asc Node:       20.57992 +/-     0.000
Inclination:            19.22113 +/-     0.000
Eccentricity:         0.29309534 +/-    0.0000
Semi-Major Axis:     39.39842667 +/-    0.0027
Time of Perihelion: 2432405.3858 +/-       4.3
Perihelion:          27.85093144 +/-    0.0020
Aphelion:            50.94592190 +/-    0.0035
Period (y)              247.3014 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.32949893 +/-    0.0007
Ecliptic Y            9.50819347 +/-    0.0002
Ecliptic Z           -1.71656164 +/-    0.0000
Ecliptic XDOT         0.00022362 +/-    0.0000
Ecliptic YDOT         0.00253255 +/-    0.0000
Ecliptic ZDOT         0.00079922 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.49891126 +/-    0.0007
Geocenter to KBO     39.58209444 +/-    0.0007
# Hcoef:  6.31

The following table shows the complete astrometric record for 01RX143. 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 (01RX143) followed by the observatory code and reference code for the source of the astrometry.

2001 09  12.36378  00 56 04.34   +03 18 01.6   22.1R 01RX143   695  Ce0436      
2001 09  12.45042  00 56 03.97   +03 17 59.5         01RX143   695  Ce0436      
2001 10  19.35775  00 53 09.26   +03 02 22.6   22.0R 01RX143   695  Ce0436      
2001 10  19.40456  00 53 09.04   +03 02 21.3         01RX143   695  Ce0436      
2001 10  20.35560  00 53 04.52   +03 01 58.5         01RX143   695  Ce0436      
2001 11  03.05590  00 52 02.55   +02 56 53.4   20.1  01RX143   304  Ce6603      
2001 11  03.10201  00 52 02.35   +02 56 52.2         01RX143   304  Ce6603      
2002 08  11.38957  01 01 50.85   +04 21 17.8   21.6R 01RX143   807  Cg3223      
2002 08  12.33198  01 01 48.72   +04 21 06.1         01RX143   807  Cg3223      
2002 08  12.40948  01 01 48.53   +04 21 05.2         01RX143   807  Cg3223      
2002 10  11.29186  00 57 49.16   +03 59 25.2   22.3R 01RX143   290  Cg7894      
2002 10  11.39979  00 57 48.65   +03 59 22.4   22.5R 01RX143   290  Cg7894      
2002 11  07.32892  00 55 45.29   +03 49 02.9   22.5R 01RX143   568  Cl8341      
2002 11  07.39226  00 55 44.98   +03 49 01.6         01RX143   568  Cl8341      
2002 11  28.12946  00 54 32.55   +03 43 48.1   22.0R 01RX143   688  Cg7894      
2002 11  28.23981  00 54 32.23   +03 43 47.5         01RX143   688  Cg7894      
2002 12  02.15810  00 54 21.95   +03 43 11.3   22.3R 01RX143   688  Cg7894      
2002 12  02.25417  00 54 21.70   +03 43 10.4         01RX143   688  Cg7894      
2005 09  28.297889 01 10 30.83   +06 40 21.1   22.7V 01RX143   645  C~2Jx5      
2005 09  28.298718 01 10 30.81   +06 40 21.0   22.1V 01RX143   645  C~2Jx5      
2005 09  28.301296 01 10 30.83   +06 40 21.2   24.2V 01RX143   645  C~2Jx5      
2005 10  03.74414  01 10 05.30   +06 38 09.3   22.0R 01RX143   250  S~06AQ      
2005 10  03.75086  01 10 05.26   +06 38 09.1         01RX143   250  S~06AQ      
2005 10  03.75757  01 10 05.23   +06 38 08.9         01RX143   250  S~06AQ      
2006 09  24.35001  01 14 38.21   +07 32 09.9   22.4R 01RX143   688  Cs0799      
2006 09  24.42633  01 14 37.86   +07 32 08.4         01RX143   688  Cs0799      
2008 11  01.373038 01 19 09.59   +08 55 05.5   22.8V 01RX143   645  C~2Jx5      
2008 11  01.373867 01 19 09.59   +08 55 05.4   22.4V 01RX143   645  C~2Jx5      
2008 11  01.376355 01 19 09.60   +08 55 05.4   23.6V 01RX143   645  C~2Jx5      
2011 12  25.08912  01 27 26.69   +11 02 51.1   22.4R 01RX143   688  C~0bcY      
2011 12  25.22216  01 27 26.51   +11 02 48.0         01RX143   688  C~0bcY      
2017 09  23.37429  01 54 45.89   +15 54 54.7   22.5R 01RX143   G37  C~2LPi      
2017 09  23.41598  01 54 45.74   +15 54 54.0         01RX143   G37  C~2LPi      
2017 09  23.45735  01 54 45.55   +15 54 53.4         01RX143   G37  C~2LPi      

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    -0.01       0.00     0.10
  2   0.0002     -5.92     0.15       0.20     0.02
  3   0.1013  -2781.48     0.21     147.82     0.24
  4   0.1014  -2785.02     0.22     147.90     0.06
  5   0.1040  -2856.29     0.09     153.08     0.27
  6   0.1415  -3830.57    -0.04     231.09     0.28
  7   0.1417  -3833.80    -0.14     231.14     0.03
  8   0.9118   6250.69    -0.23    1503.71     0.17
  9   0.9144   6216.75    -0.18    1505.16     0.05
 10   0.9146   6213.78    -0.22    1505.42     0.15
 11   1.0785   2406.48    -0.17    1685.35    -0.22
 12   1.0788   2398.35     0.10    1685.71    -0.39
 13   1.1525    456.04     0.17    1827.02    -0.12
 14   1.1527    451.26    -0.46    1827.61     0.07
 15   1.2095   -669.81    -0.25    1957.52    -0.28
 16   1.2098   -674.46    -0.11    1958.82     0.24
 17   1.2205   -830.37     0.03    1984.94     0.19
 18   1.2208   -834.17    -0.10    1985.56     0.12
 19   4.0436  16656.73     0.17    6251.94    -0.06
 20   4.0436  16656.42    -0.09    6251.96    -0.04
 21   4.0436  16656.77     0.46    6252.03     0.02
 22   4.0585  16252.13 (   1.62)   6274.74 (   0.66)
 23   4.0586  16251.50 (   1.50)   6274.78 (   0.67)
 24   4.0586  16251.00 (   1.51)   6274.77 (   0.63)
 25   5.0321  21288.39    -0.02    7742.24     0.00
 26   5.0323  21282.95     0.05    7742.82     0.25
 27   7.1376  26989.53     0.20   10869.29    -0.40
 28   7.1376  26989.49     0.22   10869.20    -0.50
 29   7.1376  26989.63     0.54   10869.14    -0.57
 30  10.2826  36939.75 (   0.58)  15356.16 (   1.25)
 31  10.2830  36936.01    -0.33   15354.19    -0.93
 32  16.0301  67640.81    -0.15   23804.46     0.47
 33  16.0303  67638.29     0.10   23804.51     0.29
 34  16.0304  67635.20    -0.23   23804.87     0.42

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.

01RX143    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.578    39.586    39.570
ecceobj         0.294     0.294     0.294
incobj         19.184    19.184    19.184
qmin           26.959    26.937    26.977
qmax           52.509    52.525    52.567
amean          39.454    39.453    39.455
amin           39.037    39.029    39.018
amax           39.950    39.953    39.961
emean           0.258     0.258     0.258
emin            0.192     0.193     0.190
emax            0.316     0.315     0.316
imean          21.229    21.226    21.226
imin           18.743    18.731    18.761
imax           23.355    23.305    23.394
excite_mean     0.446     0.446     0.446
fracstop        1.000     1.000     1.000
cjmean          2.823     2.823     2.823

libcent 0       181.8     181.6     180.6
libamp  0        68.7      65.0      73.0
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       274.7     274.4     275.1
kozaiamp         46.5      46.0      47.9