Orbit Fit and Astrometric record for 00PH30

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: 00PH30    
# Created Wed Oct 17 01:07:44 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   21 observations of   21
# Arc:   7.11y
# First observation: 2000/08/05
#  Last observation: 2007/09/16
# Chi-squared of fit:    27.59 DOF:   36 RMS:  0.20
# Min/Max residuals:    -0.31    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.668415E-05  2.157850E-02 -2.373846E-06 -3.052793E-03  2.162286E-02 -8.163240E-03
# Covariance matrix:
  2.6017E-13 -2.2181E-13 -2.3363E-14  3.0886E-14  3.0809E-15 -1.2475E-12
 -2.2181E-13  3.1800E-13  3.7412E-14 -4.9497E-14 -9.9724E-14  2.0027E-12
 -2.3363E-14  3.7412E-14  1.2682E-13 -2.9828E-14 -1.6331E-14  2.4637E-13
  3.0886E-14 -4.9497E-14 -2.9828E-14  1.8365E-14  2.1748E-14 -3.2606E-13
  3.0809E-15 -9.9724E-14 -1.6331E-14  2.1748E-14  3.8942E-13 -8.9257E-13
 -1.2475E-12  2.0027E-12  2.4637E-13 -3.2606E-13 -8.9257E-13  1.3201E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.390498  -55.660828   -0.148937    0.006626   -1.002534  2451761.821423
# Heliocentric elements and errors
Epoch:              2451762.5000  =  2000/08/06
Mean Anomaly:          338.63790 +/-     0.007
Argument of Peri:      241.85149 +/-     0.020
Long of Asc Node:      127.22889 +/-     0.000
Inclination:             8.05965 +/-     0.000
Eccentricity:         0.50411393 +/-    0.0001
Semi-Major Axis:     77.05798169 +/-    0.0157
Time of Perihelion: 2466423.5889 +/-      71.1
Perihelion:          38.21197980 +/-    0.0130
Aphelion:           115.90398357 +/-    0.0258
Period (y)              676.4484 +/-      0.21
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.78201124 +/-    0.0008
Ecliptic Y          -38.92530396 +/-    0.0011
Ecliptic Z            0.31511246 +/-    0.0000
Ecliptic XDOT         0.00166732 +/-    0.0000
Ecliptic YDOT         0.00239803 +/-    0.0000
Ecliptic ZDOT        -0.00039343 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.25019275 +/-    0.0010
Geocenter to KBO     46.24765313 +/-    0.0013
# Hcoef:  7.62

The following table shows the complete astrometric record for 00PH30. 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 (00PH30) followed by the observatory code and reference code for the source of the astrometry.

2000 08  05.32068  20 26 17.60   -18 47 43.3   24.6R 00PH30    568  Cb8005      
2000 08  05.36494  20 26 17.44   -18 47 43.9   24.4R 00PH30    568  Cb8005      
2000 08  05.41301  20 26 17.24   -18 47 44.5         00PH30    568  Cb8005      
2000 08  06.35730  20 26 13.22   -18 48 00.2   24.2R 00PH30    568  Cb8005      
2000 08  06.39871  20 26 13.03   -18 48 01.2   24.1R 00PH30    568  Cb8005      
2001 07  24.38191  20 32 27.01   -18 36 30.4         00PH30    568  Ce0222      
2001 07  24.42286  20 32 26.83   -18 36 31.1   23.7R 00PH30    568  Ce0222      
2001 07  24.46359  20 32 26.65   -18 36 31.8   23.9R 00PH30    568  Ce0222      
2001 07  25.50785  20 32 22.14   -18 36 49.9         00PH30    568  Ce0222      
2001 09  20.14468  20 28 54.92   -18 50 55.8         00PH30    675  Ce0222      
2001 09  20.19010  20 28 54.80   -18 50 56.6         00PH30    675  Ce0222      
2002 06  07.51887  20 40 36.25   -18 16 07.1         00PH30    568  Cf8836      
2002 06  07.57025  20 40 36.12   -18 16 07.8         00PH30    568  Cf8836      
2002 06  08.40972  20 40 34.12   -18 16 16.4         00PH30    675  Cf8836      
2002 06  08.46513  20 40 34.01   -18 16 16.8   24. R 00PH30    675  Cf8836      
2002 08  09.11246  20 36 41.65   -18 32 36.8   22.5R 00PH30    807  Ch1299      
2002 08  09.24592  20 36 41.06   -18 32 39.2         00PH30    807  Ch1299      
2007 09  16.20569  21 02 09.94   -17 51 09.6         00PH30    675  Cy6671      
2007 09  16.21052  21 02 09.89   -17 51 09.5         00PH30    675  Cy6671      
2007 09  16.24156  21 02 09.80   -17 51 10.3   24.1R 00PH30    675  Cy6671      
2007 09  16.24638  21 02 09.76   -17 51 10.0         00PH30    675  Cy6671      

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    -0.00
  2   0.0001      0.00     0.31       0.00     0.14
  3   0.0003      0.00     0.43       0.00     0.33
  4   0.0028      0.00     0.05       0.00     0.24
  5   0.0030      0.00    -0.13       0.00    -0.07
  6   0.9666      0.00    -0.12       0.00    -0.06
  7   0.9667      0.00    -0.13       0.00    -0.05
  8   0.9669      0.00    -0.15       0.00    -0.05
  9   0.9697      0.00    -0.22       0.00    -0.08
 10   1.1248      0.00     0.21       0.00     0.20
 11   1.1249      0.00    -0.00       0.00    -0.14
 12   1.8376      0.00     0.25       0.00    -0.10
 13   1.8378      0.00     0.15       0.00    -0.25
 14   1.8401      0.00    -0.17       0.00     0.14
 15   1.8402      0.00     0.22       0.00     0.34
 16   2.0090      0.00     0.24       0.00    -0.24
 17   2.0094      0.00     0.08       0.00    -0.30
 18   7.1126      0.00     0.43       0.00     0.01
 19   7.1126      0.00    -0.09       0.00     0.18
 20   7.1127      0.00     0.06       0.00    -0.18
 21   7.1127      0.00    -0.31       0.00     0.19

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.

00PH30    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        77.359    77.358    77.359
ecceobj         0.506     0.506     0.506
incobj          8.053     8.053     8.053
qmin           37.503    37.501    37.540
qmax          119.275   118.920   118.678
amean          76.991    76.980    76.907
amin           75.731    75.746    75.803
amax           78.825    78.651    78.493
emean           0.501     0.501     0.501
emin            0.490     0.489     0.491
emax            0.513     0.512     0.512
imean           6.744     6.730     6.753
imin            6.356     6.346     6.347
imax            7.190     7.172     7.195
excite_mean     0.515     0.514     0.515
fracstop        1.000     1.000     1.000
cjmean          3.139     3.140     3.139

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       198.8     198.3     198.8
kozaiamp        180.0     180.0     180.0