Orbit Fit and Astrometric record for 07PS45

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: 07PS45    
# Created Thu Dec 14 02:37:30 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   7.32y
# First observation: 2007/08/12
#  Last observation: 2014/12/07
Preliminary a, adot, b, bdot, g, gdot:
   0.000741   0.027170  -0.000032  -0.007269   0.027733   0.000000
# Chi-squared of fit:    80.39 DOF:   54 RMS:  0.29
# Min/Max residuals:    -0.85    0.73
# Exact a, adot, b, bdot, g, gdot:
  1.877770E-05  2.736710E-02 -4.279326E-06 -7.345727E-03  2.612023E-02  2.858205E-03
# Covariance matrix:
  3.4801E-13 -1.7324E-13 -2.9299E-14  3.6377E-14 -1.1729E-13 -6.4904E-13
 -1.7324E-13  2.9969E-13  6.4105E-14 -7.8917E-14  3.6928E-13  1.3918E-12
 -2.9299E-14  6.4105E-14  2.8314E-13 -5.8594E-14  8.0273E-14  3.0594E-13
  3.6377E-14 -7.8917E-14 -5.8594E-14  2.9113E-14 -9.8027E-14 -3.7694E-13
 -1.1729E-13  3.6928E-13  8.0273E-14 -9.8027E-14  5.9503E-13  1.7095E-12
 -6.4904E-13  1.3918E-12  3.0594E-13 -3.7694E-13  1.7095E-12  6.6555E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -12.700114   -9.816488    0.517315   -0.190956   -0.847549  2454324.849534
# Heliocentric elements and errors
Epoch:              2454320.5000  =  2007/08/08
Mean Anomaly:           21.03235 +/-     0.019
Argument of Peri:      188.50130 +/-     0.031
Long of Asc Node:      131.00018 +/-     0.000
Inclination:            19.52092 +/-     0.000
Eccentricity:         0.19829875 +/-    0.0000
Semi-Major Axis:     47.62093169 +/-    0.0044
Time of Perihelion: 2447307.8766 +/-       6.3
Perihelion:          38.17776060 +/-    0.0042
Aphelion:            57.06410277 +/-    0.0058
Period (y)              328.6284 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.56793371 +/-    0.0011
Ecliptic Y           -7.02947371 +/-    0.0002
Ecliptic Z           -8.41689917 +/-    0.0003
Ecliptic XDOT         0.00061654 +/-    0.0000
Ecliptic YDOT         0.00280369 +/-    0.0000
Ecliptic ZDOT        -0.00081708 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.13575521 +/-    0.0010
Geocenter to KBO     38.28450001 +/-    0.0011
# Hcoef:  5.59

The following table shows the complete astrometric record for 07PS45. 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 (07PS45) followed by the observatory code and reference code for the source of the astrometry.

2007 08  12.34878  23 44 29.48   -15 32 14.3   21.2R 07PS45    675  Cy5811      
2007 08  12.39203  23 44 29.35   -15 32 15.6   21.8R 07PS45    675  Cy5811      
2007 08  13.31642  23 44 26.00   -15 32 51.1   20.8R 07PS45    675  Cy5811      
2007 08  13.34189  23 44 25.89   -15 32 52.0   21.3R 07PS45    675  Cy5811      
2010 10  04.03735  00 00 25.776  -15 15 13.57  21.1R 07PS45    809  C~0NHr      
2010 10  04.12061  00 00 25.386  -15 15 15.37  20.9R 07PS45    809  C~0NHr      
2010 10  04.20380  00 00 25.009  -15 15 17.49  21.3R 07PS45    809  C~0NHr      
2010 10  06.99656  00 00 12.134  -15 16 30.79  20.9R 07PS45    809  C~0NHr      
2010 10  07.16412  00 00 11.355  -15 16 35.14  20.8R 07PS45    809  C~0NHr      
2013 11  06.12591  00 17 30.80   -14 32 32.0   21.4R 07PS45    G37  C~0yjO      
2013 11  06.20396  00 17 30.51   -14 32 32.7         07PS45    G37  C~0yjO      
2013 11  23.22499  00 16 43.168  -14 32 47.16  21.2r 07PS45    F51  C~1vVk      
2013 11  23.23637  00 16 43.138  -14 32 47.17  21.6r 07PS45    F51  C~1vVk      
2013 11  23.24895  00 16 43.114  -14 32 46.96  20.9i 07PS45    F51  C~1vVk      
2013 11  23.26167  00 16 43.094  -14 32 47.04  21.1i 07PS45    F51  C~1vVk      
2014 08  22.52860  00 29 14.867  -13 37 49.78  21.4w 07PS45    F51  C~1vVk      
2014 08  22.53976  00 29 14.826  -13 37 50.17  21.5w 07PS45    F51  C~1vVk      
2014 08  22.55094  00 29 14.787  -13 37 50.76  21.5w 07PS45    F51  C~1vVk      
2014 08  22.56216  00 29 14.749  -13 37 50.99  21.4w 07PS45    F51  C~1vVk      
2014 08  23.53518  00 29 11.388  -13 38 29.53  21.6w 07PS45    F51  C~1vVk      
2014 08  23.54791  00 29 11.345  -13 38 30.04  21.6w 07PS45    F51  C~1vVk      
2014 08  23.56064  00 29 11.297  -13 38 30.62  21.6w 07PS45    F51  C~1vVk      
2014 08  23.57336  00 29 11.251  -13 38 31.05  21.4w 07PS45    F51  C~1vVk      
2014 09  22.46671  00 27 06.236  -13 57 23.66  21.5w 07PS45    F51  C~1vVk      
2014 09  22.47952  00 27 06.175  -13 57 24.25  21.5w 07PS45    F51  C~1vVk      
2014 09  22.49234  00 27 06.109  -13 57 24.56  21.5w 07PS45    F51  C~1vVk      
2014 09  22.50517  00 27 06.063  -13 57 25.03  21.5w 07PS45    F51  C~1vVk      
2014 12  07.21833  00 22 37.648  -14 12 22.29  21.2i 07PS45    F51  C~1vVk      
2014 12  07.24437  00 22 37.630  -14 12 22.11  21.1i 07PS45    F51  C~1vVk      
2014 12  07.25744  00 22 37.616  -14 12 21.81  21.4i 07PS45    F51  C~1vVk      

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    -0.46       0.00    -0.03
  2   0.0001     -2.25     0.09      -0.42     0.15
  3   0.0026    -60.91     0.35     -13.16     0.55
  4   0.0027    -62.73     0.19     -13.34     0.73
  5   3.1449  13024.19    -0.29   -4821.63    -0.85
  6   3.1452  13018.29    -0.05   -4820.87    -0.45
  7   3.1454  13012.42     0.22   -4820.47    -0.43
  8   3.1530  12811.76     0.12   -4807.79    -0.49
  9   3.1535  12799.65     0.10   -4806.95    -0.55
 10   6.2362  27692.28    -0.03   -8984.96     0.42
 11   6.2364  27688.11    -0.33   -8983.70     0.42
 12   6.2830  27052.22    -0.31   -8689.16     0.16
 13   6.2831  27051.81    -0.41   -8688.98     0.13
 14   6.2831  27051.59    -0.30   -8688.63     0.23
 15   6.2831  27051.29    -0.26   -8688.57     0.04
 16   7.0286  38619.23    -0.07  -10683.25    -0.11
 17   7.0286  38618.50    -0.07  -10683.32    -0.05
 18   7.0286  38617.70    -0.14  -10683.59    -0.19
 19   7.0286  38617.08    -0.02  -10683.55    -0.00
 20   7.0313  38553.80    -0.04  -10695.77    -0.01
 21   7.0313  38552.99    -0.01  -10695.94    -0.03
 22   7.0314  38552.07    -0.08  -10696.14    -0.09
 23   7.0314  38551.25    -0.05  -10696.22    -0.02
 24   7.1133  36342.77     0.10  -10880.35     0.08
 25   7.1133  36341.67     0.03  -10880.48    -0.05
 26   7.1133  36340.64     0.02  -10880.31     0.10
 27   7.1134  36339.81     0.20  -10880.43    -0.03
 28   7.3207  32329.13     0.45   -9902.82     0.28
 29   7.3207  32328.97     0.50   -9902.53     0.01
 30   7.3208  32328.92     0.55   -9902.17     0.10

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.

07PS45    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        47.876    47.890    47.863
ecceobj         0.201     0.201     0.201
incobj         19.528    19.528    19.528
qmin           36.982    37.411    37.429
qmax           59.330    58.951    59.090
amean          47.796    47.795    47.796
amin           47.184    47.207    47.181
amax           48.523    48.491    48.501
emean           0.195     0.190     0.191
emin            0.160     0.152     0.160
emax            0.226     0.218     0.219
imean          18.440    18.564    18.587
imin           17.753    17.932    18.003
imax           19.390    19.552    19.393
excite_mean     0.372     0.371     0.372
fracstop        1.000     1.000     1.000
cjmean          2.974     2.975     2.974

libcent 0       177.4     181.8     178.7
libamp  0       163.5     165.5     172.5
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       195.7     186.5     194.3
kozaiamp        179.9     179.9     180.0