Orbit Fit and Astrometric record for 10LQ68

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: 10LQ68    
# Created Tue Dec 19 02:37:36 2017
# Orbit generated from Bernstein formalism
# Fitting   74 observations of   74
# Arc:   0.98y
# First observation: 2010/06/11
#  Last observation: 2011/06/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.000007   0.027174  -0.000005   0.000811   0.025556   0.000000
# Chi-squared of fit:   155.85 DOF:  142 RMS:  0.26
# Min/Max residuals:    -0.73    0.88
# Exact a, adot, b, bdot, g, gdot:
  1.633707E-05  2.693668E-02  5.863804E-07  8.098209E-04  2.594897E-02 -5.364988E-03
# Covariance matrix:
  4.2581E-14  1.4921E-12 -6.9738E-15  4.0067E-14  7.0958E-13  5.4545E-11
  1.4921E-12  3.2574E-10 -1.3883E-12  8.5450E-12  1.4343E-10  1.1587E-08
 -6.9738E-15 -1.3883E-12  3.3331E-14 -7.4914E-14 -6.1366E-13 -4.9420E-11
  4.0067E-14  8.5450E-12 -7.4914E-14  4.2794E-13  3.7645E-12  3.0416E-10
  7.0958E-13  1.4343E-10 -6.1366E-13  3.7645E-12  6.3352E-11  5.1057E-09
  5.4545E-11  1.1587E-08 -4.9420E-11  3.0416E-10  5.1057E-09  4.1245E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.749956 -110.959815   -0.190163   -0.047846   -0.994999  2455358.763846
# Heliocentric elements and errors
Epoch:              2455350.5000  =  2010/06/03
Mean Anomaly:          313.74124 +/-     0.931
Argument of Peri:       11.94584 +/-     2.411
Long of Asc Node:      306.29791 +/-     0.028
Inclination:             3.19612 +/-     0.001
Eccentricity:         0.22729442 +/-    0.0240
Semi-Major Axis:     45.08835285 +/-    0.5245
Time of Perihelion: 2469560.2512 +/-     142.3
Perihelion:          34.84002176 +/-    1.1573
Aphelion:            55.33668393 +/-    1.2607
Period (y)              302.7644 +/-      5.28
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -13.94344212 +/-    0.0042
Ecliptic Y          -36.94625890 +/-    0.0110
Ecliptic Z           -1.84884882 +/-    0.0006
Ecliptic XDOT         0.00285625 +/-    0.0000
Ecliptic YDOT        -0.00048642 +/-    0.0001
Ecliptic ZDOT         0.00011247 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.53307308 +/-    0.0104
Geocenter to KBO     38.53717634 +/-    0.0118
# Hcoef:  7.56

The following table shows the complete astrometric record for 10LQ68. 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 (10LQ68) followed by the observatory code and reference code for the source of the astrometry.

2010 06  11.26308  16 27 30.20   -24 31 20.3   22.7R 10LQ68    568  C~0Ip4      
2010 06  11.26412  16 27 30.20   -24 31 20.4         10LQ68    568  C~0Ip4      
2010 06  11.26519  16 27 30.19   -24 31 20.6         10LQ68    568  C~0Ip4      
2010 06  11.26623  16 27 30.19   -24 31 20.4         10LQ68    568  C~0Ip4      
2010 06  11.26727  16 27 30.17   -24 31 20.2         10LQ68    568  C~0Ip4      
2010 06  11.40732  16 27 29.39   -24 31 18.3         10LQ68    568  C~0Ip4      
2010 06  11.40836  16 27 29.39   -24 31 18.3         10LQ68    568  C~0Ip4      
2010 06  11.40942  16 27 29.38   -24 31 18.4         10LQ68    568  C~0Ip4      
2010 06  11.41046  16 27 29.37   -24 31 18.3         10LQ68    568  C~0Ip4      
2010 06  11.41148  16 27 29.38   -24 31 18.4         10LQ68    568  C~0Ip4      
2010 06  11.44971  16 27 29.18   -24 31 17.8         10LQ68    568  C~0Ip4      
2010 06  11.45074  16 27 29.17   -24 31 17.8         10LQ68    568  C~0Ip4      
2010 06  11.45177  16 27 29.15   -24 31 17.8         10LQ68    568  C~0Ip4      
2010 06  11.45280  16 27 29.15   -24 31 17.6         10LQ68    568  C~0Ip4      
2010 06  11.45389  16 27 29.14   -24 31 17.7         10LQ68    568  C~0Ip4      
2010 06  11.54909  16 27 28.72   -24 31 16.1         10LQ68    568  C~0Ip4      
2010 06  11.55013  16 27 28.71   -24 31 16.0         10LQ68    568  C~0Ip4      
2010 06  11.55116  16 27 28.68   -24 31 16.1         10LQ68    568  C~0Ip4      
2010 06  11.55220  16 27 28.67   -24 31 15.9         10LQ68    568  C~0Ip4      
2010 06  11.55324  16 27 28.67   -24 31 16.0         10LQ68    568  C~0Ip4      
2010 06  12.26327  16 27 24.88   -24 31 07.7   23.8V 10LQ68    568  C~0Ip4      
2010 06  12.26430  16 27 24.83   -24 31 07.8         10LQ68    568  C~0Ip4      
2010 06  12.26533  16 27 24.81   -24 31 07.3         10LQ68    568  C~0Ip4      
2010 06  12.26645  16 27 24.82   -24 31 07.7         10LQ68    568  C~0Ip4      
2010 06  12.26748  16 27 24.84   -24 31 07.7         10LQ68    568  C~0Ip4      
2010 06  12.43104  16 27 23.99   -24 31 05.0         10LQ68    568  C~0Ip4      
2010 06  12.43207  16 27 23.96   -24 31 05.3         10LQ68    568  C~0Ip4      
2010 06  12.43314  16 27 23.95   -24 31 05.3         10LQ68    568  C~0Ip4      
2010 06  12.43418  16 27 23.96   -24 31 05.3         10LQ68    568  C~0Ip4      
2010 06  12.43521  16 27 23.94   -24 31 05.3         10LQ68    568  C~0Ip4      
2010 06  13.26147  16 27 19.56   -24 30 54.5   23.8V 10LQ68    568  C~0Ip4      
2010 06  13.26258  16 27 19.57   -24 30 54.5         10LQ68    568  C~0Ip4      
2010 06  13.26363  16 27 19.55   -24 30 54.6         10LQ68    568  C~0Ip4      
2010 06  13.26466  16 27 19.55   -24 30 54.7         10LQ68    568  C~0Ip4      
2010 06  13.26578  16 27 19.55   -24 30 54.6         10LQ68    568  C~0Ip4      
2010 06  13.43345  16 27 18.68   -24 30 52.7         10LQ68    568  C~0Ip4      
2010 06  13.43448  16 27 18.68   -24 30 52.6         10LQ68    568  C~0Ip4      
2010 06  13.43552  16 27 18.66   -24 30 52.7         10LQ68    568  C~0Ip4      
2010 06  13.43655  16 27 18.65   -24 30 52.8         10LQ68    568  C~0Ip4      
2010 06  13.43758  16 27 18.66   -24 30 52.7         10LQ68    568  C~0Ip4      
2010 06  13.52455  16 27 18.20   -24 30 51.8         10LQ68    568  C~0Ip4      
2010 06  13.52661  16 27 18.15   -24 30 51.6         10LQ68    568  C~0Ip4      
2010 06  13.52764  16 27 18.17   -24 30 51.7         10LQ68    568  C~0Ip4      
2010 09  02.24005  16 23 55.17   -24 18 33.1   23.4R 10LQ68    568  C~0QjI      
2010 09  02.24266  16 23 55.18   -24 18 32.6         10LQ68    568  C~0QjI      
2010 09  02.24784  16 23 55.19   -24 18 33.0         10LQ68    568  C~0QjI      
2010 09  02.25054  16 23 55.19   -24 18 32.9         10LQ68    568  C~0QjI      
2010 09  02.25315  16 23 55.20   -24 18 33.0         10LQ68    568  C~0QjI      
2010 09  02.25839  16 23 55.20   -24 18 32.9         10LQ68    568  C~0QjI      
2010 09  02.26360  16 23 55.22   -24 18 33.1         10LQ68    568  C~0QjI      
2010 09  03.22870  16 23 56.59   -24 18 31.5         10LQ68    568  C~0QjI      
2010 09  03.23129  16 23 56.59   -24 18 31.6         10LQ68    568  C~0QjI      
2010 09  03.23388  16 23 56.59   -24 18 31.7         10LQ68    568  C~0QjI      
2010 09  03.23914  16 23 56.59   -24 18 31.5         10LQ68    568  C~0QjI      
2010 09  03.24173  16 23 56.59   -24 18 31.5         10LQ68    568  C~0QjI      
2010 09  03.24694  16 23 56.61   -24 18 31.6         10LQ68    568  C~0QjI      
2010 09  03.24954  16 23 56.61   -24 18 31.6         10LQ68    568  C~0QjI      
2010 09  03.25217  16 23 56.61   -24 18 31.5         10LQ68    568  C~0QjI      
2010 09  04.23078  16 23 58.10   -24 18 30.3         10LQ68    568  C~0QjI      
2010 09  04.23599  16 23 58.11   -24 18 30.3         10LQ68    568  C~0QjI      
2010 09  04.23860  16 23 58.12   -24 18 30.4         10LQ68    568  C~0QjI      
2010 09  04.24119  16 23 58.12   -24 18 30.4         10LQ68    568  C~0QjI      
2010 09  04.24641  16 23 58.12   -24 18 30.4         10LQ68    568  C~0QjI      
2010 09  04.24902  16 23 58.13   -24 18 30.3         10LQ68    568  C~0QjI      
2010 09  04.25163  16 23 58.13   -24 18 30.4         10LQ68    568  C~0QjI      
2011 06  03.50454  16 35 00.41   -24 44 08.2   23.1r 10LQ68    568  C~0Wc5      
2011 06  03.50557  16 35 00.40   -24 44 08.2         10LQ68    568  C~0Wc5      
2011 06  03.50660  16 35 00.40   -24 44 08.2         10LQ68    568  C~0Wc5      
2011 06  03.50765  16 35 00.39   -24 44 08.2         10LQ68    568  C~0Wc5      
2011 06  03.50868  16 35 00.38   -24 44 08.2         10LQ68    568  C~0Wc5      
2011 06  04.28520  16 34 56.14   -24 43 59.2         10LQ68    568  C~0Wc5      
2011 06  04.28727  16 34 56.13   -24 43 59.2         10LQ68    568  C~0Wc5      
2011 06  04.28840  16 34 56.12   -24 43 59.2         10LQ68    568  C~0Wc5      
2011 06  04.28948  16 34 56.11   -24 43 59.1         10LQ68    568  C~0Wc5      

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     0.02       0.00    -0.02
  2   0.0000      0.02     0.11      -0.10    -0.12
  3   0.0000     -0.09     0.09      -0.32    -0.34
  4   0.0000     -0.12     0.13      -0.12    -0.14
  5   0.0000     -0.42    -0.09       0.03     0.01
  6   0.0004    -11.23    -0.39       0.25     0.10
  7   0.0004    -11.23    -0.31       0.25     0.10
  8   0.0004    -11.35    -0.35       0.13    -0.02
  9   0.0004    -11.50    -0.42       0.20     0.06
 10   0.0004    -11.35    -0.19       0.13    -0.02
 11   0.0005    -14.14    -0.11       0.29     0.10
 12   0.0005    -14.27    -0.16       0.27     0.07
 13   0.0005    -14.54    -0.36       0.23     0.03
 14   0.0005    -14.58    -0.31       0.43     0.23
 15   0.0005    -14.69    -0.35       0.31     0.11
 16   0.0008    -20.61     0.88       0.99     0.65
 17   0.0008    -20.76     0.80       1.07     0.73
 18   0.0008    -21.15     0.49       0.90     0.56
 19   0.0008    -21.31     0.40       1.08     0.74
 20   0.0008    -21.30     0.50       0.98     0.64
 21   0.0027    -73.68     0.13       1.08    -0.23
 22   0.0027    -74.34    -0.45       0.88    -0.43
 23   0.0027    -74.69    -0.73       1.33     0.02
 24   0.0027    -74.49    -0.45       0.96    -0.36
 25   0.0027    -74.22    -0.10       1.00    -0.32
 26   0.0032    -86.10     0.25       1.85     0.37
 27   0.0032    -86.46    -0.03       1.49     0.01
 28   0.0032    -86.59    -0.08       1.47    -0.01
 29   0.0032    -86.46     0.13       1.49     0.01
 30   0.0032    -86.73    -0.06       1.45    -0.04
 31   0.0055   -147.46    -0.34       2.75     0.07
 32   0.0055   -147.32    -0.12       2.77     0.09
 33   0.0055   -147.58    -0.30       2.63    -0.05
 34   0.0055   -147.56    -0.21       2.53    -0.15
 35   0.0055   -147.58    -0.14       2.63    -0.05
 36   0.0059   -159.60     0.32       2.64    -0.22
 37   0.0059   -159.62     0.38       2.74    -0.12
 38   0.0059   -159.87     0.20       2.60    -0.26
 39   0.0060   -159.99     0.16       2.48    -0.38
 40   0.0060   -159.87     0.36       2.60    -0.26
 41   0.0062   -166.21     0.48       2.51    -0.49
 42   0.0062   -166.92    -0.07       2.60    -0.41
 43   0.0062   -166.63     0.29       2.54    -0.46
 44   0.2272  -3022.00    -0.17     288.66    -0.10
 45   0.2272  -3021.95    -0.16     289.18     0.41
 46   0.2272  -3021.75    -0.04     288.80     0.01
 47   0.2272  -3021.77    -0.11     288.90     0.10
 48   0.2272  -3021.62     0.00     288.83     0.01
 49   0.2272  -3021.63    -0.10     288.92     0.08
 50   0.2272  -3021.33     0.11     288.77    -0.10
 51   0.2299  -3003.11     0.14     293.40     0.10
 52   0.2299  -3003.09     0.11     293.30    -0.01
 53   0.2299  -3003.08     0.08     293.20    -0.12
 54   0.2299  -3003.11    -0.05     293.40     0.05
 55   0.2299  -3003.11    -0.10     293.40     0.04
 56   0.2299  -3002.82     0.09     293.34    -0.04
 57   0.2299  -3002.82     0.04     293.34    -0.05
 58   0.2299  -3002.84    -0.02     293.44     0.04
 59   0.2326  -2982.93    -0.01     297.94     0.05
 60   0.2326  -2982.80     0.02     297.96     0.05
 61   0.2327  -2982.65     0.12     297.89    -0.04
 62   0.2327  -2982.65     0.06     297.89    -0.06
 63   0.2327  -2982.65    -0.04     297.89    -0.08
 64   0.2327  -2982.53     0.03     298.01     0.03
 65   0.2327  -2982.51    -0.01     297.91    -0.08
 66   0.9781   6186.37    -0.03     159.56     0.02
 67   0.9781   6186.24    -0.09     159.54     0.00
 68   0.9781   6186.24    -0.01     159.54     0.00
 69   0.9781   6186.10    -0.06     159.52    -0.02
 70   0.9781   6185.97    -0.12     159.50    -0.04
 71   0.9802   6127.46     0.10     160.15     0.00
 72   0.9802   6127.32     0.12     160.13    -0.02
 73   0.9802   6127.19     0.07     160.11    -0.04
 74   0.9802   6127.04     0.01     160.19     0.04

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.

10LQ68    quality flag:1

Type:      11:6EEEEE  SCATNEAR CLASSICAL

axisobj        44.750    46.454    43.635
ecceobj         0.225     0.293     0.160
incobj          3.201     3.203     3.198
qmin           34.340    31.355    35.493
qmax           56.391    71.958    52.861
amean          45.104    48.521    43.974
amin           44.659    44.384    43.565
amax           45.623    52.291    44.407
emean           0.224     0.325     0.160
emin            0.212     0.264     0.127
emax            0.237     0.378     0.191
imean           4.970     6.733     5.197
imin            4.235     3.197     3.421
imax            5.844    10.635     6.922
excite_mean     0.241     0.346     0.184
fracstop        1.000     1.000     1.000
cjmean          3.043     3.004     3.059

libcent 0       179.3    -180.0    -180.0
libamp  0        80.2    -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       167.8     184.3     177.7
kozaiamp        180.0     179.9     179.9