Orbit Fit and Astrometric record for 01KD77

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: 01KD77    
# Created Fri Dec 15 02:37:05 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   28
# Arc:  15.02y
# First observation: 2001/05/24
#  Last observation: 2016/05/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.002316   0.034266   0.000021  -0.000458   0.028491   0.000000
# Chi-squared of fit:    37.83 DOF:   44 RMS:  0.22
# Min/Max residuals:    -0.75    0.53
# Exact a, adot, b, bdot, g, gdot:
  1.527574E-05  3.250937E-02 -3.058120E-07 -4.422696E-04  2.919485E-02  1.282014E-03
# Covariance matrix:
  1.6004E-13 -7.1074E-14 -7.4780E-17  7.7524E-16  6.8188E-14 -1.1950E-13
 -7.1074E-14  6.7323E-14  7.5858E-16 -8.5631E-16 -2.9615E-15  1.2379E-13
 -7.4780E-17  7.5858E-16  7.9940E-14 -8.4043E-15  2.2911E-15  1.5288E-15
  7.7524E-16 -8.5631E-16 -8.4043E-15  3.3277E-15 -1.8094E-16 -1.6620E-15
  6.8188E-14 -2.9615E-15  2.2911E-15 -1.8094E-16  2.2746E-13  2.9318E-16
 -1.1950E-13  1.2379E-13  1.5288E-15 -1.6620E-15  2.9318E-16  2.3959E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.178298 -110.659949    0.111707    0.038375   -1.012234  2452053.703933
# Heliocentric elements and errors
Epoch:              2452050.5000  =  2001/05/21
Mean Anomaly:           17.38563 +/-     0.009
Argument of Peri:       88.27121 +/-     0.011
Long of Asc Node:      139.17498 +/-     0.002
Inclination:             2.25157 +/-     0.000
Eccentricity:         0.10939021 +/-    0.0001
Semi-Major Axis:     39.31284211 +/-    0.0031
Time of Perihelion: 2447702.5141 +/-       2.1
Perihelion:          35.01240210 +/-    0.0035
Aphelion:            43.61328212 +/-    0.0041
Period (y)              246.4960 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -12.53428691 +/-    0.0002
Ecliptic Y          -32.92992774 +/-    0.0005
Ecliptic Z            1.30190764 +/-    0.0000
Ecliptic XDOT         0.00280127 +/-    0.0000
Ecliptic YDOT        -0.00118725 +/-    0.0000
Ecliptic ZDOT        -0.00003668 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.25880675 +/-    0.0005
Geocenter to KBO     34.25261344 +/-    0.0006
# Hcoef:  5.58

The following table shows the complete astrometric record for 01KD77. 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 (01KD77) followed by the observatory code and reference code for the source of the astrometry.

2001 05  24.20319  16 32 01.90   -19 41 51.1   20.5R 01KD77    807  Cd1817      
2001 05  24.26615  16 32 01.53   -19 41 50.3         01KD77    807  Cd1817      
2001 06  09.01166  16 30 29.45   -19 38 37.4   20.9R 01KD77    304  Cd1817      
2001 06  09.06293  16 30 29.14   -19 38 36.9         01KD77    304  Cd1817      
2001 06  19.22068  16 29 31.75   -19 36 44.4   20.2R 01KD77    688  Cd1817      
2001 06  19.28609  16 29 31.51   -19 36 43.6         01KD77    688  Cd1817      
2001 07  22.22434  16 27 04.62   -19 32 38.8   21.0R 01KD77    688  Cd2368      
2001 07  22.26943  16 27 04.49   -19 32 37.6         01KD77    688  Cd2368      
2001 08  19.06387  16 26 17.39   -19 32 33.4   19.8R 01KD77    807  Cd7687      
2001 08  20.07112  16 26 17.29   -19 32 36.2         01KD77    807  Cd7687      
2001 08  21.07467  16 26 17.32   -19 32 41.1         01KD77    807  Cd7687      
2002 02  22.64292  16 43 37.66   -20 10 17.4   21. R 01KD77    568  Ce9336      
2002 02  23.63953  16 43 39.98   -20 10 18.5         01KD77    568  Ce9336      
2002 05  19.34571  16 40 18.84   -20 00 18.1   20.5R 01KD77    644  Cl2614      
2002 06  03.26013  16 38 52.02   -19 57 26.7         01KD77    675  Cf7160      
2002 06  03.32390  16 38 51.64   -19 57 25.9         01KD77    675  Cf7160      
2002 07  13.13774  16 35 21.77   -19 51 28.2   21.2R 01KD77    304  Cf9823      
2002 07  13.16267  16 35 21.67   -19 51 28.0         01KD77    304  Cf9823      
2002 07  18.00980  16 35 02.58   -19 51 02.9         01KD77    304  Cf9823      
2002 07  18.19089  16 35 01.89   -19 51 02.1         01KD77    304  Cf9823      
2003 05  01.53887  16 49 41.29   -20 19 27.1   21.5R 01KD77    568  Ch9866      
2003 05  01.58457  16 49 41.07   -20 19 26.6         01KD77    568  Ch9866      
2004 05  26.19208  16 55 13.91   -20 29 55.1   21.2R 01KD77    304  Ck8652      
2004 05  26.22572  16 55 13.72   -20 29 54.8         01KD77    304  Ck8652      
2005 06  29.29364  16 59 47.86   -20 39 09.9         01KD77    688  Cn8276      
2005 06  29.33996  16 59 47.63   -20 39 09.7         01KD77    688  Cn8276      
2016 05  29.37583  18 27 47.147  -21 41 43.79  20.4R 01KD77    G37              
2016 05  29.43513  18 27 46.847  -21 41 43.76        01KD77    G37              

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     0.48       0.00     0.01
  2   0.0002     -5.29     0.53       0.01     0.02
  3   0.0433  -1320.12     0.28      -4.61     0.15
  4   0.0434  -1324.53     0.15      -4.78     0.05
  5   0.0712  -2143.09    -0.75     -16.84    -0.07
  6   0.0714  -2146.57 (   0.97)    -16.57 (   0.31)
  7   0.1616  -4235.95    -0.34     -95.40    -0.13
  8   0.1617  -4237.95 (  -0.28)    -94.50 (   0.91)
  9   0.2378  -4896.49    -0.06    -194.79    -0.14
 10   0.2406  -4897.45 (  -0.33)   -197.78 (   0.77)
 11   0.2433  -4896.26    -0.17    -202.55    -0.12
 12   0.7514   9961.10    -0.41    -310.48    -0.02
 13   0.7541   9993.70    -0.45    -307.26    -0.23
 14   0.9860   7100.15    -0.17     -92.97     0.00
 15   1.0268   5863.08     0.24     -92.09     0.04
 16   1.0270   5857.66     0.25     -92.04     0.13
 17   1.1360   2875.51     0.05    -157.18     0.21
 18   1.1361   2874.09     0.12    -157.18     0.28
 19   1.1494   2603.91    -0.00    -171.25    -0.02
 20   1.1499   2594.16     0.02    -171.86    -0.08
 21   1.9366  15126.09     0.06    -203.39    -0.08
 22   1.9367  15122.94     0.05    -203.27    -0.03
 23   3.0061  19877.77     0.10    -272.12     0.12
 24   3.0062  19875.06     0.22    -272.12     0.12
 25   4.0988  23806.39    -0.29    -397.19    -0.10
 26   4.0989  23803.11     0.06    -397.33    -0.16
 27  15.0148 105568.83    -0.01   -1418.50    -0.09
 28  15.0150 105563.55     0.01   -1418.31     0.11

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.

01KD77    quality flag:3

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

axisobj        39.334    39.343    39.325
ecceobj         0.109     0.109     0.109
incobj          2.251     2.251     2.251
qmin           34.168    34.165    34.101
qmax           45.370    45.433    45.366
amean          39.460    39.460    39.460
amin           39.002    38.991    38.995
amax           39.971    39.968    39.971
emean           0.115     0.115     0.115
emin            0.095     0.094     0.094
emax            0.136     0.137     0.136
imean           2.401     2.509     2.331
imin            1.161     1.159     1.163
imax            3.658     3.900     3.466
excite_mean     0.123     0.124     0.123
fracstop        1.000     1.000     1.000
cjmean          3.035     3.034     3.035

libcent 0       180.2     179.9     180.4
libamp  0       105.3     108.5     101.6
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       181.9     179.4     175.8
kozaiamp        180.0     180.0     180.0