Orbit Fit and Astrometric record for 13NM24

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: 13NM24    
# Created Tue Dec 12 02:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   17 observations of   17
# Arc:   2.09y
# First observation: 2011/07/27
#  Last observation: 2013/08/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.018057  -0.000007   0.010244   0.022569   0.000000
# Chi-squared of fit:     8.97 DOF:   28 RMS:  0.13
# Min/Max residuals:    -0.25    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.257583E-05  1.795269E-02  6.942456E-06  1.017460E-02  2.250460E-02 -3.335957E-03
# Covariance matrix:
  2.6504E-13  2.3773E-14 -9.4086E-15  8.2285E-14  3.5935E-13  3.8978E-12
  2.3773E-14  1.3251E-12 -9.4077E-14  8.0206E-13  1.3394E-12  3.7761E-11
 -9.4086E-15 -9.4077E-14  2.0677E-13 -1.7043E-13 -9.9877E-14 -2.9114E-12
  8.2285E-14  8.0206E-13 -1.7043E-13  6.3074E-13  8.6017E-13  2.4814E-11
  3.5935E-13  1.3394E-12 -9.9877E-14  8.6017E-13  2.3653E-12  4.0597E-11
  3.8978E-12  3.7761E-11 -2.9114E-12  2.4814E-11  4.0597E-11  1.1682E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -9.274572  -39.940558    0.284771   -0.156894   -0.960416  2455769.971146
# Heliocentric elements and errors
Epoch:              2455760.5000  =  2011/07/18
Mean Anomaly:          277.43733 +/-     0.217
Argument of Peri:       83.51597 +/-     0.125
Long of Asc Node:      335.27958 +/-     0.001
Inclination:            30.74171 +/-     0.001
Eccentricity:         0.16539573 +/-    0.0016
Semi-Major Axis:     45.13858257 +/-    0.0284
Time of Perihelion: 2481164.4677 +/-      62.4
Perihelion:          37.67285379 +/-    0.0751
Aphelion:            52.60431136 +/-    0.0786
Period (y)              303.2704 +/-      0.29
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.19120069 +/-    0.0023
Ecliptic Y          -28.99641475 +/-    0.0019
Ecliptic Z           -7.16111113 +/-    0.0005
Ecliptic XDOT         0.00124517 +/-    0.0000
Ecliptic YDOT         0.00180920 +/-    0.0000
Ecliptic ZDOT         0.00128710 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.39946900 +/-    0.0021
Geocenter to KBO     44.43535900 +/-    0.0030
# Hcoef:  6.04

The following table shows the complete astrometric record for 13NM24. 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 (13NM24) followed by the observatory code and reference code for the source of the astrometry.

2011 07  27.47038  21 42 35.222  -23 34 18.57  22.7w 13NM24    F51  C~1w3u      
2011 07  27.48507  21 42 35.131  -23 34 18.73  23.1w 13NM24    F51  C~1w3u      
2011 07  27.49976  21 42 35.099  -23 34 19.36  22.7w 13NM24    F51  C~1w3u      
2011 07  27.51447  21 42 35.036  -23 34 19.44  22.9w 13NM24    F51  C~1w3u      
2011 08  19.45837  21 40 45.415  -23 41 13.06  21.8i 13NM24    F51  C~1w3u      
2011 08  30.41424  21 39 52.807  -23 43 47.40  22.9w 13NM24    F51  C~1w3u      
2011 08  30.44372  21 39 52.680  -23 43 48.05  23.1w 13NM24    F51  C~1w3u      
2012 08  21.38163  21 43 55.858  -22 48 13.42  22.1w 13NM24    F51  C~1w3u      
2012 08  21.39546  21 43 55.803  -22 48 13.68  22.0w 13NM24    F51  C~1w3u      
2012 08  21.40960  21 43 55.730  -22 48 14.00  22.4w 13NM24    F51  C~1w3u      
2013 07  14.51185  21 50 11.363  -21 41 58.84  22.8w 13NM24    F51  C~1w3u      
2013 07  14.52730  21 50 11.309  -21 41 59.35  22.5w 13NM24    F51  C~1w3u      
2013 07  14.54365  21 50 11.225  -21 41 59.63  22.6w 13NM24    F51  C~1w3u      
2013 08  29.36229  21 46 40.690  -21 55 52.97  22.5w 13NM24    F51  C~1w3u      
2013 08  29.37612  21 46 40.609  -21 55 53.13  22.5w 13NM24    F51  C~1w3u      
2013 08  29.38994  21 46 40.552  -21 55 53.36  22.6w 13NM24    F51  C~1w3u      
2013 08  29.40375  21 46 40.476  -21 55 53.58  22.4w 13NM24    F51  C~1w3u      

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     0.04
  2   0.0000     -1.23    -0.25       0.27     0.27
  3   0.0001     -1.86     0.11      -0.18    -0.22
  4   0.0001     -2.70     0.24       0.03    -0.05
  5   0.0629  -1561.14    -0.22     108.75    -0.16
  6   0.0929  -2294.29     0.00     200.72     0.25
  7   0.0930  -2296.15     0.10     200.67    -0.09
  8   1.0703   1971.29    -0.07    2235.50     0.07
  9   1.0703   1970.49     0.08    2235.51    -0.03
 10   1.0703   1969.43     0.00    2235.54    -0.11
 11   1.9659   8230.32     0.04    4204.05     0.04
 12   1.9659   8229.44     0.08    4203.83    -0.19
 13   1.9660   8228.24    -0.15    4203.97    -0.07
 14   2.0914   5184.32     0.12    4422.79     0.02
 15   2.0915   5183.20    -0.06    4423.02     0.12
 16   2.0915   5182.38     0.05    4423.07     0.04
 17   2.0915   5181.31    -0.08    4423.22     0.06

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.

13NM24    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.059    45.139    44.982
ecceobj         0.166     0.171     0.162
incobj         30.740    30.741    30.739
qmin           37.134    34.565    37.050
qmax           53.327    56.148    53.185
amean          45.050    45.102    44.968
amin           44.693    44.710    44.603
amax           45.456    45.572    45.370
emean           0.156     0.200     0.155
emin            0.138     0.160     0.139
emax            0.173     0.232     0.173
imean          31.853    31.182    31.823
imin           31.504    30.563    31.461
imax           32.218    31.992    32.083
excite_mean     0.550     0.555     0.550
fracstop        1.000     1.000     1.000
cjmean          2.721     2.719     2.721

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       173.7     181.1     179.5
kozaiamp        180.0     180.0     179.9