Orbit Fit and Astrometric record for 02PP149

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: 02PP149   
# Created Tue Dec 12 02:37:16 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:  17.15y
# First observation: 2000/07/31
#  Last observation: 2017/09/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.001655   0.023785   0.001706  -0.016374   0.029983   0.000000
# Chi-squared of fit:   172.25 DOF:   34 RMS:  0.52
# Min/Max residuals:    -1.85    1.11
# Exact a, adot, b, bdot, g, gdot:
  1.368556E-05  2.286433E-02 -7.613727E-06 -1.582688E-02  2.666639E-02  2.087032E-03
# Covariance matrix:
  3.6663E-13 -1.5029E-14 -4.6641E-14  2.1637E-14  6.7075E-13 -7.4049E-14
 -1.5029E-14  2.6221E-14  2.7478E-14 -1.2689E-14  1.6431E-13  4.4455E-14
 -4.6641E-14  2.7478E-14  1.9452E-13 -3.2286E-14  4.4373E-14  6.5774E-14
  2.1637E-14 -1.2689E-14 -3.2286E-14  1.0915E-14 -2.0170E-14 -3.0406E-14
  6.7075E-13  1.6431E-13  4.4373E-14 -2.0170E-14  3.3076E-12  7.6296E-14
 -7.4049E-14  4.4455E-14  6.5774E-14 -3.0406E-14  7.6296E-14  1.0594E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.694127  -23.425919    0.485290    0.041730   -0.890270  2451756.825523
# Heliocentric elements and errors
Epoch:              2451750.5000  =  2000/07/25
Mean Anomaly:           40.38124 +/-     0.078
Argument of Peri:      127.73556 +/-     0.094
Long of Asc Node:      159.66669 +/-     0.000
Inclination:            34.67953 +/-     0.000
Eccentricity:         0.08936230 +/-    0.0002
Semi-Major Axis:     41.03707271 +/-    0.0119
Time of Perihelion: 2440979.8945 +/-      20.4
Perihelion:          37.36990569 +/-    0.0125
Aphelion:            44.70423973 +/-    0.0144
Period (y)              262.8892 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.00225266 +/-    0.0023
Ecliptic Y          -15.68725526 +/-    0.0010
Ecliptic Z            1.76236711 +/-    0.0001
Ecliptic XDOT         0.00119263 +/-    0.0000
Ecliptic YDOT         0.00204411 +/-    0.0000
Ecliptic ZDOT        -0.00161294 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.39731250 +/-    0.0022
Geocenter to KBO     37.50038460 +/-    0.0026
# Hcoef:  6.95

The following table shows the complete astrometric record for 02PP149. 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 (02PP149) followed by the observatory code and reference code for the source of the astrometry.

2000 07  31.32478  22 29 16.53   -06 35 40.1   22.9R 02PP149   807  Ch1309      
2000 07  31.40464  22 29 16.20   -06 35 42.7         02PP149   807  Ch1309      
2000 08  27.14216  22 27 13.00   -06 51 32.4   22.2R 02PP149   807  Ch1309      
2000 08  27.21448  22 27 12.68   -06 51 35.0         02PP149   807  Ch1309      
2002 08  11.33940  22 40 59.56   -07 24 19.8   21.8R 02PP149   807  Cg3357      
2002 08  12.30468  22 40 55.22   -07 24 54.8         02PP149   807  Cg3357      
2002 08  12.38292  22 40 54.72   -07 24 57.4         02PP149   807  Cg3357      
2003 09  06.15565  22 45 12.53   -08 01 19.9   23.2R 02PP149   304  Ci4537      
2003 09  06.20869  22 45 12.28   -08 01 22.0         02PP149   304  Ci4537      
2005 08  29.35080  22 58 12.30   -08 37 10.9   22.5R 02PP149   250  S~06AW      
2005 08  29.35751  22 58 12.26   -08 37 11.2         02PP149   250  S~06AX      
2005 08  29.36423  22 58 12.23   -08 37 11.5         02PP149   250  S~06AX      
2006 08  22.25005  23 04 57.53   -08 51 57.2   21.9R 02PP149   807  Cs2529      
2006 08  23.17462  23 04 53.33   -08 52 32.8         02PP149   807  Cs2529      
2006 08  23.24187  23 04 53.02   -08 52 35.4         02PP149   807  Cs2529      
2010 09  17.23863  23 27 35.60   -10 22 11.3   22.1R 02PP149   688  C~0NFk      
2010 09  17.28378  23 27 35.35   -10 22 13.2         02PP149   688  C~0NFk      
2017 09  23.33587  00 09 38.72   -12 15 44.4   23.0R 02PP149   G37  C~2LPo      
2017 09  23.38991  00 09 38.41   -12 15 46.0         02PP149   G37  C~2LPo      
2017 09  23.42765  00 09 38.23   -12 15 48.9         02PP149   G37  C~2LPo      

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    -0.03       0.00    -0.37
  2   0.0002     -5.53     0.08      -0.61    -0.46
  3   0.0734  -2061.33    -0.15    -210.65    -0.37
  4   0.0736  -2066.72     0.40    -211.32    -0.43
  5   2.0288   8649.80     0.59   -6593.71     0.24
  6   2.0314   8576.68     0.05   -6602.06     0.11
  7   2.0316   8568.80    -1.85   -6601.69     1.11
  8   3.0988  11317.14    -0.43  -10072.62     0.37
  9   3.0989  11312.90    -0.32  -10073.17     0.27
 10   5.0788  21311.52     0.73  -16525.42    -0.31
 11   5.0788  21310.84     0.61  -16525.47    -0.30
 12   5.0788  21310.31     0.62  -16525.58    -0.35
 13   6.0587  26622.06    -0.14  -19727.90     0.10
 14   6.0612  26549.43     0.16  -19736.35     0.45
 15   6.0614  26544.08     0.21  -19736.95     0.45
 16  10.1298  43705.34     0.07  -33211.77    -0.21
 17  10.1299  43700.96    -0.46  -33211.97    -0.17
 18  17.1472  78816.95     0.58  -57979.08    -0.12
 19  17.1473  78811.26    -0.02  -57978.20     0.75
 20  17.1474  78807.03    -0.69  -57979.68    -0.74

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.

02PP149    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.103    41.139    41.067
ecceobj         0.091     0.091     0.090
incobj         34.655    34.655    34.654
qmin           36.747    36.763    36.731
qmax           45.470    45.526    45.399
amean          40.996    41.031    40.954
amin           40.676    40.715    40.642
amax           41.331    41.362    41.276
emean           0.087     0.088     0.087
emin            0.074     0.075     0.074
emax            0.101     0.101     0.100
imean          33.891    33.891    33.891
imin           33.614    33.603    33.614
imax           34.205    34.209    34.200
excite_mean     0.564     0.565     0.564
fracstop        1.000     1.000     1.000
cjmean          2.665     2.665     2.665

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       186.7     187.8     186.3
kozaiamp        180.0     179.9     179.9