Orbit Fit and Astrometric record for 95DB2

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: 95DB2     
# Created Tue Oct 17 01:36:55 2017
# Orbit generated from Bernstein formalism
# Fitting   42 observations of   42
# Arc:  20.07y
# First observation: 1995/02/24
#  Last observation: 2015/03/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.002468   0.029054  -0.000241   0.002096   0.021738   0.000000
# Chi-squared of fit:  3574.87 DOF:   78 RMS:  1.63
# Min/Max residuals:    -7.76    1.94
# Exact a, adot, b, bdot, g, gdot:
  1.726451E-05  2.682794E-02 -2.411356E-06  1.925264E-03  2.545312E-02 -3.409853E-04
# Covariance matrix:
  7.1504E-14 -2.7197E-14  2.0832E-15 -1.7352E-15  1.3111E-14 -4.1716E-14
 -2.7197E-14  2.5726E-14 -2.1959E-15  1.8261E-15 -3.0523E-14  4.4147E-14
  2.0832E-15 -2.1959E-15  4.6512E-14 -3.7932E-15  2.8364E-15 -3.9411E-15
 -1.7352E-15  1.8261E-15 -3.7932E-15  1.2397E-15 -2.3409E-15  3.2767E-15
  1.3111E-14 -3.0523E-14  2.8364E-15 -2.3409E-15  1.3642E-13 -5.8028E-14
 -4.1716E-14  4.4147E-14 -3.9411E-15  3.2767E-15 -5.8028E-14  7.9265E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.012054  128.158997   -0.446983    0.000174   -0.887837  2449772.768108
# Heliocentric elements and errors
Epoch:              2449770.5000  =  1995/02/22
Mean Anomaly:          358.75079 +/-     0.004
Argument of Peri:        1.80023 +/-     0.006
Long of Asc Node:      128.64034 +/-     0.000
Inclination:             4.10723 +/-     0.000
Eccentricity:         0.13296129 +/-    0.0001
Semi-Major Axis:     46.32972426 +/-    0.0037
Time of Perihelion: 2450170.1887 +/-       1.3
Perihelion:          40.16966443 +/-    0.0041
Aphelion:            52.48978410 +/-    0.0049
Period (y)              315.3536 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.17308419 +/-    0.0004
Ecliptic Y           31.30610797 +/-    0.0004
Ecliptic Z            0.00816832 +/-    0.0000
Ecliptic XDOT        -0.00223940 +/-    0.0000
Ecliptic YDOT        -0.00181318 +/-    0.0000
Ecliptic ZDOT         0.00020690 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.17158985 +/-    0.0004
Geocenter to KBO     39.28791938 +/-    0.0006
# Hcoef:  7.59

The following table shows the complete astrometric record for 95DB2. 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 (95DB2) followed by the observatory code and reference code for the source of the astrometry.

1995 02  24.2674   08 42 19.49   +18 14 16.8   22.5R 95DB2     568  A24813      
1995 02  24.3072   08 42 19.29   +18 14 17.5         95DB2     568  A24813      
1995 02  24.3461   08 42 19.14   +18 14 18.2         95DB2     568  A24813      
1995 02  24.4660   08 42 18.57   +18 14 20.3         95DB2     568  A24813      
1995 02  25.4050   08 42 14.37   +18 14 37.3         95DB2     568  A24813      
1995 02  26.2322   08 42 10.77   +18 14 51.9         95DB2     568  A24813      
1995 02  26.2913   08 42 10.51   +18 14 52.6         95DB2     568  A24813      
1995 03  24.2470   08 40 38.93   +18 21 09.2         95DB2     568  C26263      
1995 03  24.4170   08 40 38.48   +18 21 11.1   24.1R 95DB2     568  C26263      
1995 03  30.41265  08 40 25.24   +18 22 07.7         95DB2     413  C24958      
1995 03  30.47806  08 40 25.07   +18 22 08.4         95DB2     413  C24958      
1995 04  04.26090  08 40 17.03   +18 22 45.2         95DB2     568  C26263      
1995 04  04.38700  08 40 16.86   +18 22 46.1         95DB2     568  C26263      
1995 04  05.24264  08 40 15.62   +18 22 51.4         95DB2     568  C26263      
1995 04  05.24867  08 40 15.61   +18 22 51.7         95DB2     568  C26263      
1995 04  05.37408  08 40 15.43   +18 22 52.5         95DB2     568  C26263      
1995 04  06.23740  08 40 14.32   +18 22 57.0         95DB2     568  C26263      
1995 04  06.36014  08 40 14.15   +18 22 57.9         95DB2     568  C26263      
1995 12  24.49001  08 53 37.91   +17 35 23.5         95DB2     568  C26491      
1995 12  24.52330  08 53 37.77   +17 35 24.1         95DB2     568  C26491      
1995 12  24.55598  08 53 37.65   +17 35 24.5         95DB2     568  C26491      
1995 12  27.49536  08 53 26.10   +17 36 14.8         95DB2     568  C26491      
1995 12  27.52025  08 53 26.00   +17 36 15.2         95DB2     568  C26491      
1997 03  01.85288  08 54 32.87   +17 39 48.9         95DB2     950  C30062      
1997 03  02.87677  08 54 28.54   +17 40 07.2         95DB2     950  C30063      
1997 03  13.15109  08 53 48.06   +17 42 53.8         95DB2     711  C29556      
1997 03  13.22088  08 53 47.99   +17 42 54.3         95DB2     711  C29556      
1997 03  13.22909  08 53 47.99   +17 42 55.6         95DB2     711  C29556      
1998 12  18.19556  09 12 43.41   +16 34 21.6         95DB2     950  Ca3582      
1998 12  18.22223  09 12 43.33   +16 34 22.3         95DB2     950  Ca3582      
1998 12  18.24873  09 12 43.25   +16 34 22.9         95DB2     950  Ca3582      
1998 12  19.18310  09 12 40.47   +16 34 37.5         95DB2     950  Ca3582      
1998 12  19.22162  09 12 40.38   +16 34 37.1         95DB2     950  Ca3582      
1998 12  19.24879  09 12 40.28   +16 34 37.5         95DB2     950  Ca3582      
1998 12  19.27287  09 12 40.18   +16 34 38.5         95DB2     950  Ca3582      
2000 02  05.22047  09 15 27.25   +16 30 09.8   23.0R 95DB2     695  Cb0719      
2000 02  05.32113  09 15 26.71   +16 30 12.1         95DB2     695  Cb0719      
2000 02  27.12112  09 13 39.57   +16 38 35.5   23.5R 95DB2     695  Cb0719      
2000 02  27.21824  09 13 39.08   +16 38 37.3         95DB2     695  Cb0719      
2015 03  23.16174  10 42 17.15   +10 28 38.1   23.4R 95DB2     695  C~1Q39      
2015 03  23.22581  10 42 16.84   +10 28 39.7         95DB2     695  C~1Q39      
2015 03  23.28539  10 42 16.59   +10 28 41.3         95DB2     695  C~1Q39      

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    -0.12       0.00     0.74
  2   0.0001     -2.93    -0.36      -0.06     0.64
  3   0.0002     -5.18     0.04       0.06     0.73
  4   0.0005    -13.57    -0.22      -0.01     0.58
  5   0.0031    -75.76    -0.33       0.93     0.48
  6   0.0054   -129.08     0.33       1.77     0.40
  7   0.0055   -132.84     0.49       1.49     0.05
  8   0.0766  -1490.08    -1.10      29.47     0.38
  9   0.0771  -1496.76    -1.28      29.67     0.46
 10   0.0935  -1693.47    -0.26      36.05     0.32
 11   0.0937  -1695.99    -0.82      36.10     0.33
 12   0.1068  -1816.06     0.87      42.36     1.76
 13   0.1071  -1818.63     1.21      42.61     1.94
 14   0.1094  -1837.05     0.85      43.21     1.59
 15   0.1095  -1837.27     0.77      43.47     1.84
 16   0.1098  -1839.95     0.81      43.59     1.88
 17   0.1122  -1856.38     1.38      43.89     1.24
 18   0.1125  -1858.94     1.30      44.14     1.41
 19   0.8302   9962.30     0.24     328.05     0.10
 20   0.8303   9960.21     0.07     328.08     0.10
 21   0.8304   9958.44     0.21     327.99    -0.01
 22   0.8384   9785.45    -1.50     331.25    -0.24
 23   0.8385   9783.96    -1.47     331.24    -0.26
 24   2.0167  10646.95    -3.03     799.21    -0.30
 25   2.0195  10582.24    -2.19     799.81    -0.61
 26   2.0476   9978.75    -1.66     801.42    -7.76
 27   2.0478   9977.65     1.05     801.62    -7.58
 28   2.0478   9977.29     1.14     802.88    -6.33
 29   3.8136  26891.84     0.69    1513.01    -0.11
 30   3.8137  26890.51     0.60    1513.33     0.19
 31   3.8138  26889.21     0.53    1513.57     0.39
 32   3.8163  26845.99     0.17    1515.64     0.99
 33   3.8164  26844.85     0.87    1514.87     0.17
 34   3.8165  26843.34     0.65    1514.82     0.09
 35   3.8166  26841.64     0.10    1515.35     0.60
 36   4.9472  29258.90     0.15    1981.83     0.75
 37   4.9474  29250.64    -0.13    1981.68     0.53
 38   5.0071  27599.41     0.31    2000.23     0.96
 39   5.0074  27592.02    -0.07    1999.84     0.52
 40  20.0736 118894.10     0.31    8707.68     0.42
 41  20.0738 118887.65    -0.29    8707.29     0.19
 42  20.0740 118882.29    -0.20    8707.30     0.36

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.

95DB2    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.468    46.479    46.456
ecceobj         0.136     0.136     0.136
incobj          4.107     4.107     4.107
qmin           39.334    39.357    39.354
qmax           54.077    54.153    54.095
amean          46.528    46.539    46.516
amin           46.126    46.142    46.126
amax           46.970    46.997    46.968
emean           0.138     0.138     0.138
emin            0.125     0.125     0.125
emax            0.152     0.152     0.152
imean           2.867     2.866     2.867
imin            2.408     2.409     2.406
imax            3.323     3.325     3.323
excite_mean     0.147     0.147     0.146
fracstop        1.000     1.000     1.000
cjmean          3.106     3.106     3.106

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       172.0     172.1     172.1
kozaiamp        179.9     180.0     180.0