Orbit Fit and Astrometric record for 24952

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: 24952     
# Created Sat Oct 21 01:36:17 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   35 observations of   35
# Arc:  11.08y
# First observation: 1997/08/28
#  Last observation: 2008/09/27
# Chi-squared of fit:   203.29 DOF:   64 RMS:  0.43
# Min/Max residuals:    -1.13    1.84
# Exact a, adot, b, bdot, g, gdot:
  1.770474E-05  3.104982E-02  5.486088E-06  9.080044E-03  2.938213E-02 -6.182404E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.782397   -3.416374    0.363249    0.045105   -0.932105  2450689.006021
# Heliocentric elements and errors
Epoch:              2450688.5000  =  1997/08/28
Mean Anomaly:          312.34734 +/-     0.000
Argument of Peri:       80.36968 +/-     0.000
Long of Asc Node:      346.80575 +/-     0.000
Inclination:            16.51832 +/-     0.000
Eccentricity:         0.22778604 +/-    0.0000
Semi-Major Axis:     39.65290891 +/-    0.0000
Time of Perihelion: 2462760.9570 +/-       0.0
Perihelion:          30.62052977 +/-    0.0000
Aphelion:            48.68528806 +/-    0.0000
Period (y)              249.7013 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.85114613 +/-    0.0000
Ecliptic Y           -2.44790022 +/-    0.0000
Ecliptic Z            1.65232270 +/-    0.0000
Ecliptic XDOT        -0.00043847 +/-    0.0000
Ecliptic YDOT         0.00293233 +/-    0.0000
Ecliptic ZDOT         0.00081698 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.97617818 +/-    0.0000
Geocenter to KBO     34.03443520 +/-    0.0000
# Hcoef:  7.57

The following table shows the complete astrometric record for 24952. 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 (24952) followed by the observatory code and reference code for the source of the astrometry.

1997 08  28.50529  23 43 02.39   +01 11 43.2   22.5R 24952     568  C30562      
1997 08  28.55573  23 43 02.15   +01 11 42.2         24952     568  C30562      
1997 08  28.60615  23 43 01.87   +01 11 40.8         24952     568  C30562      
1997 08  29.46954  23 42 57.51   +01 11 19.0         24952     568  C30562      
1997 08  29.53183  23 42 57.21   +01 11 17.2         24952     568  C30562      
1997 09  01.38251  23 42 42.65   +01 10 03.9         24952     568  C30562      
1997 09  01.43666  23 42 42.34   +01 10 02.6         24952     568  C30562      
1997 09  01.48696  23 42 42.10   +01 10 01.2         24952     568  C30562      
1997 09  23.26250  23 40 45.53   +00 59 38.2         24952     568  Ca0017      
1997 09  23.28657  23 40 45.41   +00 59 37.2         24952     568  Ca0017      
1997 09  23.37229  23 40 44.93   +00 59 35.0         24952     568  Ca0017      
1997 09  24.29292  23 40 39.96   +00 59 07.5         24952     568  Ca0017      
1997 09  24.33328  23 40 39.75   +00 59 06.1         24952     568  Ca0017      
1997 09  27.18766  23 40 24.43   +00 57 40.3   22.9R 24952     696  Ca0017      
1997 09  27.29770  23 40 23.86   +00 57 37.8   22.8R 24952     696  Ca0017      
1997 10  05.17781  23 39 42.69   +00 53 43.7   22.5R 24952     675  Ca0017      
1997 10  05.31057  23 39 42.00   +00 53 39.9         24952     675  Ca0017      
1998 05  31.55103  23 51 00.72   +02 21 53.9   22.6R 24952     568  Ca1944      
1998 05  31.58899  23 51 00.84   +02 21 55.1         24952     568  Ca1944      
1998 06  29.52388  23 51 40.45   +02 31 38.5         24952     568  Ca1697      
1998 06  29.60606  23 51 40.44   +02 31 39.4         24952     568  Ca1698      
1998 06  30.58512  23 51 40.28   +02 31 49.4         24952     568  Ca1698      
1999 11  09.15749  23 48 45.37   +03 02 19.8         24952     696  Ca7284      
1999 11  09.21927  23 48 45.15   +03 02 18.5   23.0  24952     696  Ca7284      
1999 11  09.26580  23 48 45.00   +03 02 17.8         24952     696  Ca7284      
1999 11  10.07780  23 48 42.41   +03 02 00.5         24952     696  Ca7284      
1999 11  10.12528  23 48 42.30   +03 01 59.3         24952     696  Ca7284      
2000 09  05.11620  23 59 55.37   +04 45 43.3   22.6R 24952     309  Cc7361      
2000 09  05.12810  23 59 55.31   +04 45 42.9   23.0V 24952     309  Cc7361      
2000 09  05.13293  23 59 55.29   +04 45 42.5   22.2I 24952     309  Cc7361      
2000 09  05.13769  23 59 55.27   +04 45 42.6   22.5R 24952     309  Cc7361      
2008 09  27.50449  00 49 14.32   +14 42 41.8   23.5R 24952     250  S~06E5      
2008 09  27.51074  00 49 14.28   +14 42 41.6         24952     250  S~06E5      
2008 09  27.51768  00 49 14.24   +14 42 41.4         24952     250  S~06E5      
2008 09  27.52463  00 49 14.20   +14 42 41.2         24952     250  S~06E5      

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    -0.24       0.00    -1.13
  2   0.0001      0.00     0.19       0.00     0.09
  3   0.0003      0.00    -0.15       0.00    -0.04
  4   0.0026      0.00    -0.44       0.00    -0.03
  5   0.0028      0.00    -0.11       0.00    -0.25
  6   0.0106      0.00    -0.14       0.00     0.22
  7   0.0108      0.00    -0.52       0.00     0.34
  8   0.0109      0.00    -0.15       0.00     0.27
  9   0.0705      0.00     0.03       0.00    -0.11
 10   0.0706      0.00     0.20       0.00    -0.39
 11   0.0708      0.00     0.05       0.00    -0.03
 12   0.0733      0.00    -0.21       0.00    -0.01
 13   0.0735      0.00    -0.05       0.00    -0.21
 14   0.0813      0.00    -0.33       0.00    -0.60
 15   0.0816      0.00     0.08       0.00     0.18
 16   0.1031      0.00     1.81       0.00    -0.26
 17   0.1035      0.00     1.84       0.00    -0.18
 18   0.7558      0.00     0.04       0.00    -0.11
 19   0.7559      0.00     0.26       0.00    -0.02
 20   0.8351      0.00     0.03       0.00    -0.20
 21   0.8353      0.00     0.13       0.00    -0.18
 22   0.8380      0.00     0.27       0.00    -0.27
 23   2.1975      0.00    -0.07       0.00     0.41
 24   2.1977      0.00    -0.32       0.00     0.41
 25   2.1978      0.00    -0.28       0.00     0.69
 26   2.2001      0.00    -0.90       0.00     0.29
 27   2.2002      0.00    -0.27       0.00     0.07
 28   3.0215      0.00    -0.15       0.00     0.38
 29   3.0216      0.00    -0.10       0.00     0.29
 30   3.0216      0.00    -0.02       0.00     0.01
 31   3.0216      0.00     0.06       0.00     0.23
 32  11.0828      0.00     0.18       0.00    -0.02
 33  11.0828      0.00     0.13       0.00    -0.05
 34  11.0829      0.00     0.14       0.00    -0.06
 35  11.0829      0.00     0.15       0.00    -0.07

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.

24952    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.712    39.712    39.712
ecceobj         0.231     0.231     0.231
incobj         16.534    16.534    16.534
qmin           28.724    28.733    28.718
qmax           50.804    50.748    50.824
amean          39.454    39.454    39.455
amin           38.992    38.993    38.992
amax           39.966    39.957    39.977
emean           0.244     0.244     0.244
emin            0.213     0.213     0.214
emax            0.271     0.271     0.271
imean          16.338    16.339    16.338
imin           15.189    15.189    15.189
imax           17.472    17.472    17.472
excite_mean     0.373     0.373     0.373
fracstop        1.000     1.000     1.000
cjmean          2.893     2.893     2.893

libcent 0       180.0     180.6     179.9
libamp  0        80.1      80.4      79.9
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        88.0      88.0      88.0
kozaiamp         17.9      17.9      17.9