Orbit Fit and Astrometric record for 02CY248

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: 02CY248   
# Created Wed Oct 18 01:37:17 2017
# Orbit generated from Bernstein formalism
# Fitting   67 observations of   76
# Arc:  12.96y
# First observation: 2002/03/08
#  Last observation: 2015/01/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.001464   0.016296   0.000185  -0.002009   0.019350   0.000000
# Chi-squared of fit:    70.67 DOF:  128 RMS:  0.18
# Min/Max residuals:    -0.44    0.37
# Exact a, adot, b, bdot, g, gdot:
  8.462944E-06  1.575321E-02 -3.814663E-06 -1.942205E-03  1.955975E-02 -1.225619E-03
# Covariance matrix:
  2.2216E-13 -7.2365E-14 -1.7533E-14  7.8173E-15 -7.4177E-15 -2.7569E-13
 -7.2365E-14  3.1365E-14  8.3010E-15 -3.6929E-15 -4.2416E-15  1.3025E-13
 -1.7533E-14  8.3010E-15  8.5845E-14 -9.4167E-15 -1.3071E-15  3.5759E-14
  7.8173E-15 -3.6929E-15 -9.4167E-15  1.5829E-15  4.9559E-16 -1.5909E-14
 -7.4177E-15 -4.2416E-15 -1.3071E-15  4.9559E-16  8.2576E-14 -1.7602E-14
 -2.7569E-13  1.3025E-13  3.5759E-14 -1.5909E-14 -1.7602E-14  5.6110E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.427130  123.850842   -0.230913   -0.007201   -0.955748  2452311.655353
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:          214.19220 +/-     0.018
Argument of Peri:      337.06174 +/-     0.013
Long of Asc Node:      300.68573 +/-     0.000
Inclination:             7.00673 +/-     0.000
Eccentricity:         0.13936529 +/-    0.0001
Semi-Major Axis:     46.48537199 +/-    0.0024
Time of Perihelion: 2499197.3608 +/-       4.5
Perihelion:          40.00692444 +/-    0.0031
Aphelion:            52.96381953 +/-    0.0036
Period (y)              316.9441 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -29.20103015 +/-    0.0004
Ecliptic Y           43.12844763 +/-    0.0006
Ecliptic Z           -0.38132094 +/-    0.0000
Ecliptic XDOT        -0.00174307 +/-    0.0000
Ecliptic YDOT        -0.00137311 +/-    0.0000
Ecliptic ZDOT        -0.00027036 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   52.08558882 +/-    0.0006
Geocenter to KBO     51.12540081 +/-    0.0008
# Hcoef:  5.21

The following table shows the complete astrometric record for 02CY248. 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 (02CY248) followed by the observatory code and reference code for the source of the astrometry.

2002 02  06.15461  08 24 15.07   +18 52 29.3   21.6R 02CY248   695  Cf2784      
2002 02  06.24030  08 24 14.70   +18 52 30.5         02CY248   695  Cf2784      
2002 03  08.29944  08 22 26.75   +18 58 10.9   21.8R 02CY248   568  Cf2784      
2002 03  08.40223  08 22 26.43   +18 58 11.8         02CY248   568  Cf2784      
2002 03  09.28349  08 22 23.93   +18 58 19.6         02CY248   568  Cf2784      
2004 02  17.07356  08 30 46.22   +18 15 46.6   21.3R 02CY248   493  Cs6854      
2004 02  17.08291  08 30 46.17   +18 15 46.6   21.5R 02CY248   493  Cs6854      
2004 02  18.01017  08 30 42.61   +18 15 58.6   21.4R 02CY248   493  Cs6854      
2004 02  18.04630  08 30 42.47   +18 15 59.1   21.4R 02CY248   493  Cs6854      
2004 02  18.10126  08 30 42.26   +18 15 59.8   21.5R 02CY248   493  Cs6854      
2004 02  18.14178  08 30 42.11   +18 16 00.5   21.6R 02CY248   493  Cs6854      
2004 02  26.15900  08 30 12.64   +18 17 39.3   21.9R 02CY248   695  Ck0860      
2004 02  26.23358  08 30 12.39   +18 17 40.1         02CY248   695  Ck0860      
2004 02  27.16504  08 30 09.13   +18 17 51.1         02CY248   695  Ck0860      
2004 03  20.16838  08 29 06.04   +18 21 22.8   21.6R 02CY248   662  Ck2152      
2004 03  20.27868  08 29 05.78   +18 21 23.3         02CY248   662  Ck2152      
2004 12  13.374696 08 38 31.12   +17 41 56.4         02CY248   645  C~1mrR      
2004 12  13.375111 08 38 31.12   +17 41 56.4         02CY248   645  C~1mrR      
2004 12  13.375526 08 38 31.12   +17 41 56.4         02CY248   645  C~1mrR      
2004 12  13.375940 08 38 31.12   +17 41 56.4         02CY248   645  C~1mrR      
2004 12  13.378013 08 38 31.11   +17 41 56.4         02CY248   645  C~1mrR      
2004 12  13.378428 08 38 31.11   +17 41 56.4         02CY248   645  C~1mrR      
2005 02  09.18844  08 34 50.31   +17 54 14.9   22.2R 02CY248   688  Cm6742      
2005 02  09.31005  08 34 49.79   +17 54 16.6         02CY248   688  Cm6742      
2006 01  09.48399  08 40 33.58   +17 26 34.7   21.7R 02CY248   250  S~06AT      
2006 01  09.48838  08 40 33.56   +17 26 34.7         02CY248   250  S~06AT      
2006 01  09.49278  08 40 33.54   +17 26 34.8         02CY248   250  S~06AT      
2006 01  09.49718  08 40 33.53   +17 26 34.9         02CY248   250  S~06AT      
2006 11  23.54735  08 46 17.91   +16 59 01.8         02CY248   568  C~0VDX      
2006 11  24.52661  08 46 16.68   +16 59 04.5         02CY248   568  C~0VDX      
2006 11  24.57844  08 46 16.61   +16 59 04.7         02CY248   568  C~0VDX      
2006 11  24.63187  08 46 16.53   +16 59 04.7         02CY248   568  C~0VDX      
2006 12  24.43599  08 45 06.77   +17 02 36.1   22.4R 02CY248   688  Ct1955      
2006 12  24.49654  08 45 06.62   +17 02 35.2         02CY248   688  Ct1955      
2007 01  19.33928  08 43 29.19   +17 08 12.3   22.9g 02CY248   568  C~0VDX      
2007 01  19.37793  08 43 29.04   +17 08 12.6   23.0g 02CY248   568  C~0VDX      
2007 01  19.41240  08 43 28.89   +17 08 13.2   23.2g 02CY248   568  C~0VDX      
2007 01  20.39899  08 43 24.79   +17 08 27.8         02CY248   568  C~0VDX      
2008 01  06.38059  08 47 55.49   +16 44 12.9   22.5r 02CY248   568  C~0Dmo      
2008 01  06.44563  08 47 55.23   +16 44 13.9   22.5r 02CY248   568  C~0Dmo      
2008 01  06.47674  08 47 55.12   +16 44 14.2   22.6r 02CY248   568  C~0Dmo      
2008 01  07.55849  08 47 51.03   +16 44 28.7   22.8r 02CY248   568  C~0Dmo      
2009 03  25.14064  08 46 42.60   +16 41 01.7   22.0R 02CY248   688  C~05W8      
2009 03  25.24284  08 46 42.31   +16 41 02.9         02CY248   688  C~05W8      
2012 12  18.22654  09 06 38.38   +14 52 00.6   22.1R 02CY248   304  C~0snX      
2012 12  18.31556  09 06 38.15   +14 52 01.3         02CY248   304  C~0snX      
2012 12  18.35424  09 06 38.04   +14 52 01.6         02CY248   304  C~0snX      
2012 12  19.22457  09 06 35.77   +14 52 09.5         02CY248   304  C~0snX      
2012 12  19.27179  09 06 35.63   +14 52 09.7         02CY248   304  C~0snX      
2012 12  19.32955  09 06 35.47   +14 52 10.4         02CY248   304  C~0snX      
2013 01  10.53040  09 05 23.255  +14 56 32.76  22.4w 02CY248   F51  C~1vV8      
2013 01  10.54427  09 05 23.208  +14 56 33.24  22.5w 02CY248   F51  C~1vV8      
2013 01  10.55813  09 05 23.152  +14 56 33.40  22.7w 02CY248   F51  C~1vV8      
2013 01  10.57198  09 05 23.085  +14 56 33.59  22.4w 02CY248   F51  C~1vV8      
2013 02  03.34154  09 03 47.661  +15 02 49.77  22.4w 02CY248   F51  C~1vV8      
2013 02  03.35615  09 03 47.601  +15 02 49.98  22.4w 02CY248   F51  C~1vV8      
2013 02  03.37082  09 03 47.531  +15 02 50.24  22.2w 02CY248   F51  C~1vV8      
2013 02  03.38547  09 03 47.483  +15 02 50.49  22.4w 02CY248   F51  C~1vV8      
2013 02  09.11937  09 03 23.79   +15 04 27.3   22.1R 02CY248   304  C~0snX      
2013 02  09.21839  09 03 23.37   +15 04 28.9         02CY248   304  C~0snX      
2013 02  09.27486  09 03 23.14   +15 04 29.7         02CY248   304  C~0snX      
2013 03  03.25827  09 01 57.925  +15 10 24.68  22.7w 02CY248   F51  C~1vV8      
2013 03  03.27258  09 01 57.850  +15 10 24.82  22.5w 02CY248   F51  C~1vV8      
2013 03  03.28698  09 01 57.784  +15 10 24.91  22.5w 02CY248   F51  C~1vV8      
2013 03  03.30133  09 01 57.739  +15 10 25.18  22.2w 02CY248   F51  C~1vV8      
2014 03  20.25832  09 04 38.774  +14 51 53.97  22.3w 02CY248   F51  C~1vV8      
2014 03  20.27019  09 04 38.744  +14 51 53.99  22.3w 02CY248   F51  C~1vV8      
2014 03  20.28200  09 04 38.711  +14 51 54.26  22.3w 02CY248   F51  C~1vV8      
2015 01  20.54052  09 11 54.442  +14 13 23.60  22.2w 02CY248   F51  C~1vV8      
2015 01  20.55311  09 11 54.391  +14 13 23.69  22.3w 02CY248   F51  C~1vV8      
2015 01  20.56567  09 11 54.344  +14 13 23.93  22.5w 02CY248   F51  C~1vV8      
2015 01  20.57837  09 11 54.273  +14 13 24.10  22.8w 02CY248   F51  C~1vV8      
2015 01  22.55115  09 11 46.438  +14 13 55.70  22.2w 02CY248   F51  C~1vV8      
2015 01  22.56346  09 11 46.394  +14 13 56.02  22.2w 02CY248   F51  C~1vV8      
2015 01  22.57577  09 11 46.349  +14 13 56.21  22.1w 02CY248   F51  C~1vV8      
2015 01  22.58808  09 11 46.297  +14 13 56.40  22.1w 02CY248   F51  C~1vV8      

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 (   0.88)      0.00 (   0.46)
  2   0.0002     -5.39 (   0.68)     -0.06 (   0.49)
  3   0.0825  -1574.32     0.10     -25.80     0.29
  4   0.0828  -1578.94    -0.14     -25.98     0.22
  5   0.0852  -1615.25    -0.09     -26.61     0.21
  6   2.0285   5928.34     0.23    -812.31     0.08
  7   2.0286   5927.65     0.07    -812.48    -0.08
  8   2.0311   5875.50     0.12    -813.15    -0.06
  9   2.0312   5873.44     0.12    -813.15    -0.02
 10   2.0313   5870.37     0.16    -813.20    -0.00
 11   2.0315   5868.13     0.20    -813.04     0.20
 12   2.0534   5436.63     0.02    -818.97    -0.03
 13   2.0536   5432.98     0.26    -819.06    -0.06
 14   2.0562   5385.23    -0.02    -819.63    -0.02
 15   2.1164   4461.82 (   0.30)   -831.04 (   0.60)
 16   2.1167   4458.10     0.20    -831.45     0.27
 17   2.8507  12872.64    -0.42   -1134.73    -0.08
 18   2.8507  12872.64    -0.40   -1134.73    -0.08
 19   2.8507  12872.64    -0.38   -1134.73    -0.08
 20   2.8507  12872.64    -0.37   -1134.73    -0.07
 21   2.8507  12872.51    -0.42   -1134.76    -0.11
 22   2.8507  12872.51    -0.40   -1134.76    -0.11
 23   3.0090   9624.91     0.16   -1210.09    -0.05
 24   3.0093   9617.29    -0.09   -1210.29    -0.12
 25   3.9242  14809.54 (   1.25)  -1582.05 (  -0.66)
 26   3.9243  14809.26 (   1.23)  -1582.12 (  -0.73)
 27   3.9243  14808.96 (   1.18)  -1582.10 (  -0.70)
 28   3.9243  14808.79 (   1.27)  -1582.04 (  -0.63)
 29   4.7951  20040.61     0.36   -1902.18     0.02
 30   4.7977  20022.70     0.36   -1904.22     0.07
 31   4.7979  20021.67     0.36   -1904.29     0.12
 32   4.7980  20020.55     0.31   -1904.59    -0.06
 33   4.8796  18990.37     0.21   -1962.66     0.35
 34   4.8798  18988.52 (   1.33)  -1964.10 (  -0.96)
 35   4.9505  17540.69    -0.15   -2001.85    -0.13
 36   4.9506  17538.52     0.09   -2002.12    -0.35
 37   4.9507  17536.27    -0.02   -2002.10    -0.28
 38   4.9534  17475.29    -0.38   -2003.21    -0.20
 39   5.9144  21642.81     0.13   -2393.39    -0.18
 40   5.9146  21638.91    -0.07   -2393.42    -0.09
 41   5.9146  21637.29     0.09   -2393.54    -0.17
 42   5.9176  21576.13     0.19   -2395.09    -0.02
 43   7.1293  20673.38 (   0.84)  -2856.11 (  -0.52)
 44   7.1296  20669.00    -0.14   -2856.05    -0.44
 45  10.8640  39474.01    -0.10   -4441.68     0.22
 46  10.8642  39470.49     0.03   -4441.96     0.17
 47  10.8643  39468.82    -0.05   -4442.13     0.11
 48  10.8667  39433.79     0.10   -4443.94     0.37
 49  10.8669  39431.71     0.01   -4444.33     0.10
 50  10.8670  39429.20    -0.08   -4444.32     0.26
 51  10.9278  38312.64     0.27   -4490.27    -0.09
 52  10.9278  38311.82     0.27   -4490.00     0.21
 53  10.9279  38310.97     0.23   -4490.08     0.16
 54  10.9279  38309.95     0.03   -4490.17     0.09
 55  10.9930  36829.62    -0.14   -4519.55    -0.00
 56  10.9930  36828.69    -0.11   -4519.59    -0.03
 57  10.9931  36827.62    -0.23   -4519.63    -0.06
 58  10.9931  36826.85    -0.04   -4519.58     0.00
 59  11.0088  36458.97    -0.06   -4523.11     0.28
 60  11.0091  36452.48    -0.13   -4523.28     0.19
 61  11.0092  36448.95    -0.01   -4523.45     0.07
 62  11.0694  35126.03     0.23   -4528.02     0.16
 63  11.0695  35124.92    -0.08   -4528.19    -0.01
 64  11.0695  35123.95    -0.25   -4528.38    -0.20
 65  11.0695  35123.22    -0.17   -4528.30    -0.12
 66  12.1153  37756.20    -0.12   -4947.51     0.01
 67  12.1153  37755.76    -0.04   -4947.61    -0.10
 68  12.1153  37755.20    -0.07   -4947.49     0.02
 69  12.9538  44751.52     0.04   -5365.66     0.02
 70  12.9539  44750.75     0.07   -5365.79    -0.09
 71  12.9539  44749.99     0.10   -5365.76    -0.03
 72  12.9539  44748.91    -0.18   -5365.90    -0.15
 73  12.9593  44625.14    -0.01   -5368.61    -0.25
 74  12.9594  44624.40     0.04   -5368.48    -0.10
 75  12.9594  44623.69     0.11   -5368.49    -0.09
 76  12.9594  44622.88     0.08   -5368.53    -0.10

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.

02CY248    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.248    46.255    46.241
ecceobj         0.143     0.143     0.144
incobj          7.031     7.031     7.031
qmin           38.823    38.820    38.831
qmax           54.084    54.042    54.049
amean          46.265    46.271    46.258
amin           45.876    45.889    45.861
amax           46.711    46.727    46.699
emean           0.145     0.145     0.145
emin            0.132     0.132     0.133
emax            0.159     0.158     0.158
imean           8.584     8.584     8.585
imin            8.050     8.053     8.049
imax            9.057     9.058     9.069
excite_mean     0.208     0.208     0.208
fracstop        1.000     1.000     1.000
cjmean          3.076     3.076     3.076

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       176.2     176.1     176.2
kozaiamp        180.0     180.0     180.0