Orbit Fit and Astrometric record for 04PV117

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: 04PV117   
# Created Sat Dec 16 02:37:23 2017
# Orbit generated from Bernstein formalism
# Fitting   29 observations of   29
# Arc:   8.81y
# First observation: 2004/08/15
#  Last observation: 2013/06/08
Preliminary a, adot, b, bdot, g, gdot:
   0.000022   0.027671  -0.000002   0.001942   0.024951   0.000000
# Chi-squared of fit:    23.81 DOF:   52 RMS:  0.16
# Min/Max residuals:    -0.38    0.41
# Exact a, adot, b, bdot, g, gdot:
  1.755458E-05  2.767505E-02  2.130328E-06  1.950483E-03  2.597032E-02  1.387237E-03
# Covariance matrix:
  3.3218E-13 -5.6020E-13  1.8654E-14 -3.3262E-14  3.2584E-13 -1.8023E-12
 -5.6020E-13  1.3282E-12 -4.3666E-14  7.9328E-14 -9.4705E-13  4.2994E-12
  1.8654E-14 -4.3666E-14  9.0810E-14 -1.4342E-14  2.8804E-14 -1.4253E-13
 -3.3262E-14  7.9328E-14 -1.4342E-14  8.3341E-15 -5.4966E-14  2.5806E-13
  3.2584E-13 -9.4705E-13  2.8804E-14 -5.4966E-14  9.5687E-13 -2.9807E-12
 -1.8023E-12  4.2994E-12 -1.4253E-13  2.5806E-13 -2.9807E-12  1.3986E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.575135  -51.928151   -0.259485   -0.026966   -0.982781  2453232.840773
# Heliocentric elements and errors
Epoch:              2453230.5000  =  2004/08/13
Mean Anomaly:           19.02641 +/-     0.019
Argument of Peri:      313.33687 +/-     0.025
Long of Asc Node:      329.16417 +/-     0.000
Inclination:             4.33415 +/-     0.000
Eccentricity:         0.15132842 +/-    0.0003
Semi-Major Axis:     45.91252306 +/-    0.0138
Time of Perihelion: 2447224.9955 +/-       5.4
Perihelion:          38.96465343 +/-    0.0167
Aphelion:            52.86039270 +/-    0.0198
Period (y)              311.1035 +/-      0.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.54235811 +/-    0.0009
Ecliptic Y          -30.91379165 +/-    0.0011
Ecliptic Z           -1.05831900 +/-    0.0000
Ecliptic XDOT         0.00238853 +/-    0.0000
Ecliptic YDOT         0.00167258 +/-    0.0000
Ecliptic ZDOT         0.00020163 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.48556565 +/-    0.0011
Geocenter to KBO     38.50548809 +/-    0.0015
# Hcoef:  6.77

The following table shows the complete astrometric record for 04PV117. 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 (04PV117) followed by the observatory code and reference code for the source of the astrometry.

2004 08  15.34003  20 43 41.17   -19 46 12.3   22.5g 04PV117   568  C~0VDs      
2004 08  15.37122  20 43 41.02   -19 46 12.7   22.7g 04PV117   568  C~0VDs      
2004 08  15.39804  20 43 40.89   -19 46 13.2   22.6g 04PV117   568  C~0VDs      
2004 08  16.30846  20 43 36.39   -19 46 28.6   22.8g 04PV117   568  C~0VDs      
2004 10  04.23790  20 40 41.37   -19 55 15.6   22.4i 04PV117   568  C~0VDs      
2004 10  04.28965  20 40 41.28   -19 55 15.8   22.3i 04PV117   568  C~0VDs      
2004 10  04.34239  20 40 41.19   -19 55 15.8   22.3i 04PV117   568  C~0VDs      
2005 07  12.24317  20 52 54.21   -19 03 42.8   22.6R 04PV117   809  C~0VDs      
2005 07  12.29623  20 52 53.96   -19 03 43.9   22.2R 04PV117   809  C~0VDs      
2005 07  12.34592  20 52 53.72   -19 03 44.9   22.5R 04PV117   809  C~0VDs      
2005 07  13.22645  20 52 49.57   -19 04 01.4   23.0R 04PV117   809  C~0VDs      
2005 07  26.46938  20 51 44.18   -19 08 14.6   22.5r 04PV117   568  C~0VDs      
2005 07  26.49933  20 51 44.03   -19 08 15.3   22.6r 04PV117   568  C~0VDs      
2005 07  26.52887  20 51 43.87   -19 08 15.8   22.4r 04PV117   568  C~0VDs      
2005 07  29.35005  20 51 29.51   -19 09 10.7   22.5r 04PV117   568  C~0VDs      
2005 08  02.34902  20 51 09.01   -19 10 27.8         04PV117   309  C~0VDs      
2005 08  02.39900  20 51 08.75   -19 10 28.8         04PV117   309  C~0VDs      
2006 05  02.47539  21 01 36.77   -18 20 09.3   22.3r 04PV117   695  C~0VDs      
2006 05  03.48301  21 01 37.94   -18 20 05.3   21.9r 04PV117   695  C~0VDs      
2006 05  04.48572  21 01 38.96   -18 20 02.1   21.9r 04PV117   695  C~0VDs      
2013 06  06.26485  21 42 52.83   -14 19 01.6   22.3R 04PV117   304  C~0snl      
2013 06  06.34013  21 42 52.73   -14 19 01.8         04PV117   304  C~0snl      
2013 06  06.39503  21 42 52.63   -14 19 02.2         04PV117   304  C~0snl      
2013 06  07.27083  21 42 51.58   -14 19 07.2         04PV117   304  C~0snl      
2013 06  07.34125  21 42 51.48   -14 19 07.8         04PV117   304  C~0snl      
2013 06  07.37863  21 42 51.43   -14 19 07.9         04PV117   304  C~0snl      
2013 06  08.24081  21 42 50.32   -14 19 13.2         04PV117   304  C~0snl      
2013 06  08.31897  21 42 50.19   -14 19 13.9         04PV117   304  C~0snl      
2013 06  08.37729  21 42 50.12   -14 19 14.2         04PV117   304  C~0snl      

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    -0.19
  2   0.0001     -2.15    -0.00       0.17    -0.09
  3   0.0002     -4.05     0.07       0.16    -0.15
  4   0.0027    -69.39     0.14       1.85    -0.07
  5   0.1366  -2591.18    -0.02     130.97    -0.32
  6   0.1368  -2592.46    -0.03     131.11    -0.38
  7   0.1369  -2593.69     0.02     131.43    -0.25
  8   0.9060   8224.81     0.04     366.97     0.33
  9   0.9061   8221.09     0.07     366.88     0.20
 10   0.9062   8217.54     0.02     366.85     0.12
 11   0.9087   8156.34     0.06     367.06     0.04
 12   0.9449   7194.25    -0.02     376.17     0.41
 13   0.9450   7192.01     0.01     376.07     0.27
 14   0.9451   7189.69    -0.07     376.20     0.37
 15   0.9528   6978.69    -0.10     378.66     0.09
 16   0.9637   6677.88     0.01     383.27    -0.05
 17   0.9639   6674.06    -0.02     383.30    -0.10
 18   1.7115  16112.27    -0.06     803.18    -0.09
 19   1.7143  16129.48     0.21     802.26     0.03
 20   1.7170  16144.40    -0.20     801.18    -0.02
 21   8.8075  55746.62     0.23    3577.20    -0.31
 22   8.8077  55745.08     0.22    3577.51    -0.05
 23   8.8078  55743.47    -0.26    3577.61     0.01
 24   8.8102  55726.24     0.00    3577.96     0.06
 25   8.8104  55724.56    -0.14    3577.87    -0.07
 26   8.8105  55723.78    -0.08    3578.03     0.06
 27   8.8129  55705.57     0.16    3578.38     0.10
 28   8.8131  55703.41    -0.18    3578.34     0.02
 29   8.8132  55702.27     0.06    3578.40     0.04

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.

04PV117    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.111    46.152    46.069
ecceobj         0.153     0.154     0.153
incobj          4.320     4.319     4.320
qmin           38.398    38.438    38.398
qmax           54.195    54.258    54.138
amean          46.138    46.176    46.098
amin           45.745    45.781    45.709
amax           46.575    46.627    46.548
emean           0.150     0.151     0.150
emin            0.136     0.137     0.136
emax            0.164     0.164     0.163
imean           5.543     5.532     5.545
imin            4.926     4.927     4.925
imax            6.124     6.111     6.123
excite_mean     0.179     0.179     0.178
fracstop        1.000     1.000     1.000
cjmean          3.088     3.088     3.088

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       177.3     176.8     177.1
kozaiamp        179.9     180.0     180.0