Orbit Fit and Astrometric record for 05ER318

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: 05ER318   
# Created Sun Dec  5 02:10:14 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     64 observations of     64
# Arc:  16.02y
# First observation: 2005/03/12
#  Last observation: 2021/03/20
# Chi-squared of fit:    61.66 DOF:    122 RMS:  0.17
# Min/Max residuals:    -0.53    0.61
# Exact a, adot, b, bdot, g, gdot:
  1.842580E-05  3.839653E-02 -2.715276E-06 -7.027278E-03  3.275942E-02 -3.739510E-03
# Covariance matrix:
  1.4265E-13 -2.9828E-14 -1.0152E-14  3.8103E-15 -1.0606E-14 -3.2335E-14
 -2.9828E-14  9.5585E-15  4.0739E-15 -1.5298E-15 -2.3246E-15  1.3032E-14
 -1.0152E-14  4.0739E-15  8.8291E-14 -9.7508E-15 -1.2930E-15  6.3802E-15
  3.8103E-15 -1.5298E-15 -9.7508E-15  1.5154E-15  4.9232E-16 -2.3959E-15
 -1.0606E-14 -2.3246E-15 -1.2930E-15  4.9232E-16  6.4082E-14 -4.6729E-15
 -3.2335E-14  1.3032E-14  6.3802E-15 -2.3959E-15 -4.6729E-15  2.0417E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.015318  147.420302   -0.405624    0.016091   -0.902438  2453441.723763
# Heliocentric elements and errors
Epoch:              2453442.5000  =  2005/03/13
Mean Anomaly:          335.08865 +/-     0.004
Argument of Peri:      209.32486 +/-     0.005
Long of Asc Node:      333.54509 +/-     0.000
Inclination:            10.40015 +/-     0.000
Eccentricity:         0.16709609 +/-    0.0000
Semi-Major Axis:     36.77441227 +/-    0.0014
Time of Perihelion: 2459079.0292 +/-       4.5
Perihelion:          30.62955184 +/-    0.0015
Aphelion:            42.91927270 +/-    0.0019
Period (y)              223.0113 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -26.70172047 +/-    0.0002
Ecliptic Y           16.57813401 +/-    0.0001
Ecliptic Z            0.54083176 +/-    0.0000
Ecliptic XDOT        -0.00147330 +/-    0.0000
Ecliptic YDOT        -0.00287382 +/-    0.0000
Ecliptic ZDOT        -0.00059268 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.43424772 +/-    0.0002
Geocenter to KBO     30.52567521 +/-    0.0002
# Hcoef:  8.02

The following table shows the complete astrometric record for 05ER318. 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 (05ER318) followed by the observatory code and reference code for the source of the astrometry.

2005 03  12.22302  09 59 54.02   +13 19 17.6   22.2R 05ER318   695  Cn3361      
2005 03  12.30395  09 59 53.55   +13 19 19.8         05ER318   695  Cn3361      
2005 04  10.17132  09 57 42.12   +13 28 22.2   22.7R 05ER318   695  Cn3361      
2005 04  11.17767  09 57 38.92   +13 28 33.5         05ER318   695  Cn3361      
2005 04  11.27858  09 57 38.59   +13 28 34.6         05ER318   695  Cn3361      
2006 04  26.03038  10 04 52.76   +12 22 44.5   21.7R 05ER318   807  Cr3594      
2006 04  26.11591  10 04 52.59   +12 22 44.9         05ER318   807  Cr3594      
2006 04  27.04467  10 04 51.07   +12 22 48.4         05ER318   807  Cr3594      
2006 12  21.39586  10 22 32.45   +10 27 01.5   22.4R 05ER318   695  Ct5520      
2006 12  21.53803  10 22 32.16   +10 27 02.7         05ER318   695  Ct5520      
2007 02  21.37829  10 17 40.95   +10 50 34.0   21.9R 05ER318   695  Cu3067      
2007 02  21.48140  10 17 40.28   +10 50 36.7         05ER318   695  Cu3067      
2008 04  04.17161  10 21 36.02   +09 58 44.9   22.6R 05ER318   688  Cy5742      
2008 04  04.26876  10 21 35.63   +09 58 46.8         05ER318   688  Cy5742      
2008 12  15.98499  10 38 02.90   +08 04 28.6   23.2R 05ER318   250  S~06Ap      
2008 12  15.99124  10 38 02.90   +08 04 28.6         05ER318   250  S~06Ap      
2008 12  15.99819  10 38 02.89   +08 04 28.6         05ER318   250  S~06Ap      
2008 12  16.00513  10 38 02.88   +08 04 28.6         05ER318   250  S~06Ap      
2009 03  25.20176  10 30 15.13   +08 42 40.0   22.4R 05ER318   688  C~05XD      
2009 03  25.28845  10 30 14.69   +08 42 43.2         05ER318   688  C~05XD      
2011 01  30.41266  10 51 10.895  +05 47 33.06  22.8G 05ER318   F51  C~2r7G      
2011 01  30.42739  10 51 10.816  +05 47 33.69  22.7G 05ER318   F51  C~2r7G      
2011 01  30.45825  10 51 10.656  +05 47 34.42  22.3G 05ER318   F51  C~2r7G      
2011 02  04.45887  10 50 44.674  +05 49 43.68  22.9G 05ER318   F51  C~2r7G      
2011 02  04.47312  10 50 44.564  +05 49 44.25  23.2G 05ER318   F51  C~2r7G      
2011 02  04.48758  10 50 44.505  +05 49 44.46  23.4G 05ER318   F51  C~2r7G      
2011 02  04.50208  10 50 44.456  +05 49 44.52  23.0G 05ER318   F51  C~2r7G      
2011 02  05.44697  10 50 39.333  +05 50 10.62  22.5G 05ER318   F51  C~2r7G      
2011 02  05.46124  10 50 39.272  +05 50 10.93  23.2G 05ER318   F51  C~2r7G      
2011 02  05.47568  10 50 39.186  +05 50 11.13  22.6G 05ER318   F51  C~2r7G      
2011 03  09.51425  10 47 28.785  +06 06 55.46  19.6G 05ER318   F51  C~2r7G      
2011 04  22.26630  10 43 51.876  +06 26 46.68  22.9G 05ER318   F51  C~2r7G      
2012 01  19.52143  10 59 48.014  +04 28 49.80  22.7G 05ER318   F51  C~2r7G      
2012 02  13.45275  10 57 45.686  +04 38 45.32  22.6G 05ER318   F51  C~2r7G      
2012 03  19.34223  10 54 16.766  +04 57 37.29  22.8G 05ER318   F51  C~2r7G      
2012 03  19.35617  10 54 16.695  +04 57 37.48  22.7G 05ER318   F51  C~2r7G      
2012 03  19.37017  10 54 16.610  +04 57 38.20  22.9G 05ER318   F51  C~2r7G      
2012 03  19.38411  10 54 16.534  +04 57 38.71  23.0G 05ER318   F51  C~2r7G      
2013 02  03.57240  11 06 24.552  +03 18 56.36  22.1G 05ER318   F51  C~2r7G      
2013 04  03.35162  11 00 46.374  +03 49 45.36  22.9G 05ER318   F51  C~2r7G      
2014 02  09.56428  11 13 45.057  +02 05 12.87  23.4G 05ER318   F51  C~2r7G      
2014 03  05.49253  11 11 26.681  +02 17 25.03  22.5G 05ER318   F51  C~2r7G      
2014 03  24.37199  11 09 33.698  +02 28 08.05  23.2G 05ER318   F51  C~2r7G      
2014 04  24.33385  11 07 04.201  +02 43 10.33  23.3G 05ER318   F51  C~2r7G      
2014 04  30.27705  11 06 44.468  +02 45 15.95  21.8G 05ER318   F51  C~2r7G      
2014 11  21.63714  11 22 58.385  +00 53 15.89  23.4G 05ER318   F51  C~2r7G      
2014 12  10.58577  11 23 47.393  +00 44 45.42  23.0G 05ER318   F51  C~2r7G      
2015 01  19.55434  11 23 07.412  +00 42 04.60  22.3G 05ER318   F51  C~2r7G      
2015 03  22.42237  11 17 39.443  +01 10 07.14  22.8G 05ER318   F51  C~2r7G      
2015 12  24.64713  11 31 37.122  -00 33 40.20  22.6G 05ER318   F51  C~2r7G      
2016 02  05.50469  11 29 50.371  -00 29 49.62  22.6G 05ER318   F51  C~2r7G      
2016 02  10.51417  11 29 26.171  -00 27 57.80  23.3G 05ER318   F51  C~2r7G      
2016 02  29.48243  11 27 41.204  -00 19 01.75  23.3G 05ER318   F51  C~2r7G      
2016 03  15.36418  11 26 11.468  -00 10 40.47  22.4G 05ER318   F51  C~2r7G      
2016 04  02.31906  11 24 26.649  -00 00 17.41  23.0G 05ER318   F51  C~2r7G      
2016 04  02.33156  11 24 26.605  -00 00 16.83  23.2G 05ER318   F51  C~2r7G      
2016 04  02.34404  11 24 26.527  -00 00 16.28  22.3G 05ER318   F51  C~2r7G      
2016 04  02.35653  11 24 26.441  -00 00 16.20  22.6G 05ER318   F51  C~2r7G      
2017 01  26.58232  11 38 19.854  -01 49 00.95  23.0G 05ER318   F51  C~2r7G      
2017 02  22.46364  11 36 12.309  -01 39 25.53  22.9G 05ER318   F51  C~2r7G      
2017 03  19.36257  11 33 44.273  -01 25 49.73  22.8G 05ER318   F51  C~2r7G      
2017 03  29.36967  11 32 44.990  -01 19 56.22  23.2G 05ER318   F51  C~2r7G      
2021 03  20.277680 12 05 32.593  -06 33 31.16  22.7G 05ER318   G37  C~4hkC      
2021 03  20.338360 12 05 32.226  -06 33 29.20        05ER318   G37  C~4hkC      

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    -0.03       0.00    -0.14
     2   0.0002      0.00    -0.13       0.00     0.04
     3   0.0793      0.00    -0.26       0.00     0.07
     4   0.0820      0.00     0.01       0.00     0.14
     5   0.0823      0.00    -0.04       0.00     0.15
     6   1.1220      0.00     0.16       0.00     0.09
     7   1.1222      0.00    -0.04       0.00     0.15
     8   1.1248      0.00     0.37       0.00     0.07
     9   1.7773      0.00    -0.07       0.00    -0.02
    10   1.7777      0.00    -0.05       0.00     0.11
    11   1.9470      0.00     0.18       0.00    -0.06
    12   1.9473      0.00    -0.13       0.00    -0.53
    13   3.0635      0.00    -0.37       0.00    -0.05
    14   3.0638      0.00     0.24       0.00    -0.18
    15   3.7639      0.00     0.00       0.00     0.07
    16   3.7639      0.00     0.08       0.00     0.07
    17   3.7639      0.00     0.02       0.00     0.07
    18   3.7639      0.00    -0.04       0.00     0.07
    19   4.0355      0.00    -0.12       0.00    -0.25
    20   4.0358      0.00     0.24       0.00     0.61
    21   5.8869      0.00     0.10       0.00    -0.11
    22   5.8869      0.00     0.05       0.00     0.16
    23   5.8870      0.00     0.02       0.00     0.12
    24   5.9007      0.00     0.07       0.00    -0.02
    25   5.9008      0.00    -0.41       0.00     0.16
    26   5.9008      0.00    -0.11       0.00    -0.02
    27   5.9008      0.00     0.35       0.00    -0.35
    28   5.9034      0.00    -0.24       0.00     0.08
    29   5.9035      0.00     0.03       0.00    -0.00
    30   5.9035      0.00    -0.06       0.00    -0.20
    31   5.9912      0.00    -0.10       0.00    -0.11
    32   6.1110      0.00     0.03       0.00    -0.01
    33   6.8564      0.00     0.05       0.00    -0.29
    34   6.9247      0.00    -0.22       0.00     0.19
    35   7.0202      0.00    -0.07       0.00     0.10
    36   7.0202      0.00     0.10       0.00    -0.16
    37   7.0203      0.00     0.07       0.00     0.11
    38   7.0203      0.00     0.16       0.00     0.16
    39   7.8997      0.00     0.03       0.00     0.39
    40   8.0606      0.00     0.16       0.00     0.01
    41   8.9154      0.00    -0.03       0.00    -0.25
    42   8.9809      0.00    -0.13       0.00    -0.22
    43   9.0326      0.00     0.08       0.00    -0.19
    44   9.1173      0.00    -0.05       0.00    -0.17
    45   9.1336      0.00     0.02       0.00     0.01
    46   9.6959      0.00    -0.15       0.00     0.04
    47   9.7477      0.00    -0.07       0.00    -0.01
    48   9.8572      0.00    -0.06       0.00     0.37
    49  10.0266      0.00    -0.33       0.00    -0.33
    50  10.7856      0.00    -0.18       0.00     0.02
    51  10.9029      0.00    -0.07       0.00    -0.11
    52  10.9166      0.00     0.03       0.00    -0.05
    53  10.9685      0.00    -0.08       0.00     0.07
    54  11.0093      0.00     0.21       0.00    -0.03
    55  11.0584      0.00    -0.15       0.00     0.07
    56  11.0585      0.00     0.25       0.00     0.22
    57  11.0585      0.00     0.13       0.00     0.35
    58  11.0585      0.00    -0.11       0.00     0.01
    59  11.8778      0.00    -0.07       0.00    -0.07
    60  11.9514      0.00     0.24       0.00    -0.21
    61  12.0195      0.00     0.09       0.00    -0.00
    62  12.0469      0.00    -0.11       0.00     0.30
    63  16.0221      0.00    -0.01       0.00     0.02
    64  16.0222      0.00     0.11       0.00    -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.

05ER318    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.493    36.493    36.493
ecceobj         0.160     0.160     0.160
incobj         10.432    10.432    10.432
qmin           29.515    29.526    29.543
qmax           43.821    43.795    43.763
amean          36.477    36.477    36.476
amin           36.099    36.100    36.100
amax           36.897    36.898    36.890
emean           0.160     0.160     0.160
emin            0.129     0.129     0.129
emax            0.189     0.189     0.189
imean          11.122    11.117    11.134
imin            9.492     9.490     9.520
imax           12.784    12.784    12.784
excite_mean     0.251     0.251     0.251
fracstop        1.000     1.000     1.000
cjmean          2.956     2.956     2.956

libcent 0       178.7     179.3     179.1
libamp  0        79.3      78.0      79.7
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       168.1     167.5     168.6
kozaiamp        179.9     180.0     180.0