Orbit Fit and Astrometric record for 14QL441

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: 14QL441   
# Created Sat Oct 21 01:38:27 2017
# Orbit generated from Bernstein formalism
# Fitting   57 observations of   57
# Arc:   1.26y
# First observation: 2014/08/18
#  Last observation: 2015/11/20
Preliminary a, adot, b, bdot, g, gdot:
   0.000015   0.030851   0.000009   0.010279   0.028091   0.000000
# Chi-squared of fit:    47.18 DOF:  108 RMS:  0.16
# Min/Max residuals:    -0.40    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.606311E-05  3.043136E-02  5.845935E-06  1.015823E-02  2.769325E-02  2.780959E-03
# Covariance matrix:
  1.7897E-13  3.7865E-13  4.4243E-14  1.5355E-13  4.6362E-13  1.6556E-11
  3.7865E-13  2.1099E-12  1.1620E-13  9.7757E-13  1.7683E-12  1.1248E-10
  4.4243E-14  1.1620E-13  6.1819E-14 -9.5135E-15  1.4394E-13  3.3749E-12
  1.5355E-13  9.7757E-13 -9.5135E-15  6.1850E-13  7.4857E-13  6.2207E-11
  4.6362E-13  1.7683E-12  1.4394E-13  7.4857E-13  1.7471E-12  8.3780E-11
  1.6556E-11  1.1248E-10  3.3749E-12  6.2207E-11  8.3780E-11  7.3295E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
  -19.807317   31.271533    0.928800   -0.138592   -0.385158  2456887.769314
# Heliocentric elements and errors
Epoch:              2456880.5000  =  2014/08/11
Mean Anomaly:           10.07052 +/-     0.391
Argument of Peri:      293.26622 +/-     0.701
Long of Asc Node:       75.85484 +/-     0.002
Inclination:            26.26694 +/-     0.001
Eccentricity:         0.25573069 +/-    0.0011
Semi-Major Axis:     48.58699010 +/-    0.0341
Time of Perihelion: 2453420.0883 +/-     134.5
Perihelion:          36.16180574 +/-    0.0604
Aphelion:            61.01217447 +/-    0.0696
Period (y)              338.6789 +/-      0.36
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.86726959 +/-    0.0014
Ecliptic Y           17.05613405 +/-    0.0008
Ecliptic Z          -12.23592486 +/-    0.0006
Ecliptic XDOT        -0.00105466 +/-    0.0000
Ecliptic YDOT         0.00287810 +/-    0.0000
Ecliptic ZDOT         0.00085182 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.50593594 +/-    0.0012
Geocenter to KBO     36.10988079 +/-    0.0017
# Hcoef:  6.95

The following table shows the complete astrometric record for 14QL441. 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 (14QL441) followed by the observatory code and reference code for the source of the astrometry.

2014 08  18.268536 02 23 44.59   -06 41 51.2   23.0g 14QL441   W84  C~1Byl      
2014 08  18.270752 02 23 44.57   -06 41 51.3   22.1r 14QL441   W84  C~1Byl      
2014 08  18.273102 02 23 44.58   -06 41 51.4   21.8i 14QL441   W84  C~1Byl      
2014 08  18.276910 02 23 44.56   -06 41 51.5   21.7z 14QL441   W84  C~1Byl      
2014 09  04.221649 02 23 15.27   -06 51 07.5   24.4g 14QL441   W84  C~1Byl      
2014 09  04.223866 02 23 15.29   -06 51 07.8   22.3r 14QL441   W84  C~1Byl      
2014 09  04.226204 02 23 15.28   -06 51 08.0   21.8i 14QL441   W84  C~1Byl      
2014 09  04.230000 02 23 15.27   -06 51 07.9   21.8z 14QL441   W84  C~1Byl      
2014 09  15.295104 02 22 41.95   -06 57 32.3   22.3r 14QL441   W84  C~1Byl      
2014 09  15.297465 02 22 41.93   -06 57 32.4   21.9i 14QL441   W84  C~1Byl      
2014 09  15.301273 02 22 41.92   -06 57 32.6   21.9z 14QL441   W84  C~1Byl      
2014 09  15.309514 02 22 41.92   -06 57 32.9   22.3z 14QL441   W84  C~1yHA      
2014 09  23.302726 02 22 11.70   -07 02 08.9   23.3g 14QL441   W84  C~1Byl      
2014 09  23.304942 02 22 11.70   -07 02 09.1   22.1r 14QL441   W84  C~1Byl      
2014 09  23.307292 02 22 11.69   -07 02 09.3   22.0i 14QL441   W84  C~1Byl      
2014 09  23.311076 02 22 11.68   -07 02 09.3   21.8z 14QL441   W84  C~1Byl      
2014 09  24.180816 02 22 08.13   -07 02 39.0   23.0g 14QL441   W84  C~1Byl      
2014 09  24.183032 02 22 08.12   -07 02 39.0   22.1r 14QL441   W84  C~1Byl      
2014 09  24.185382 02 22 08.11   -07 02 39.2   21.8i 14QL441   W84  C~1Byl      
2014 09  24.189167 02 22 08.10   -07 02 39.3   21.6z 14QL441   W84  C~1Byl      
2014 09  25.275868 02 22 03.57   -07 03 15.4   21.7i 14QL441   W84  C~1yHA      
2014 09  30.270127 02 21 41.84   -07 06 01.1   22.3i 14QL441   W84  C~1yHA      
2014 10  01.161811 02 21 37.79   -07 06 30.3   22.9g 14QL441   W84  C~1Byl      
2014 10  01.164039 02 21 37.78   -07 06 30.2   21.8r 14QL441   W84  C~1Byl      
2014 10  01.166400 02 21 37.77   -07 06 30.2   21.6i 14QL441   W84  C~1Byl      
2014 10  01.170220 02 21 37.75   -07 06 30.4   21.6z 14QL441   W84  C~1Byl      
2014 10  02.353912 02 21 32.32   -07 07 08.5   23.5g 14QL441   W84  C~1yHA      
2014 10  02.355278 02 21 32.31   -07 07 08.6   22.1r 14QL441   W84  C~1yHA      
2014 10  03.366771 02 21 27.62   -07 07 40.8   22.0r 14QL441   W84  C~1yHA      
2014 10  06.361962 02 21 13.36   -07 09 14.4   22.9g 14QL441   W84  C~1Byl      
2014 10  06.364167 02 21 13.35   -07 09 14.3   21.6r 14QL441   W84  C~1Byl      
2014 10  06.366516 02 21 13.34   -07 09 14.5   21.6i 14QL441   W84  C~1Byl      
2014 10  06.370313 02 21 13.33   -07 09 14.6   21.3z 14QL441   W84  C~1Byl      
2014 10  13.245654 02 20 39.18   -07 12 37.4   22.6g 14QL441   W84  C~1Byl      
2014 10  13.247859 02 20 39.18   -07 12 37.3   21.9r 14QL441   W84  C~1Byl      
2014 10  13.250220 02 20 39.16   -07 12 37.4   21.6i 14QL441   W84  C~1Byl      
2014 10  13.254016 02 20 39.13   -07 12 37.4   21.4z 14QL441   W84  C~1Byl      
2015 10  20.195139 02 25 56.81   -06 06 09.4   22.6r 14QL441   W84  C~1bR3      
2015 10  20.197500 02 25 56.81   -06 06 09.6   22.2i 14QL441   W84  C~1bR3      
2015 10  20.201296 02 25 56.78   -06 06 09.5   21.8z 14QL441   W84  C~1bR3      
2015 10  24.265741 02 25 35.24   -06 07 47.2   21.8r 14QL441   W84  C~1bR3      
2015 10  24.268102 02 25 35.23   -06 07 47.1   21.7i 14QL441   W84  C~1bR3      
2015 10  24.271910 02 25 35.21   -06 07 47.2   21.6z 14QL441   W84  C~1bR3      
2015 11  01.063941 02 24 53.30   -06 10 29.3   22.7g 14QL441   W84  C~1bR3      
2015 11  01.066169 02 24 53.29   -06 10 29.2   21.9r 14QL441   W84  C~1bR3      
2015 11  01.068530 02 24 53.28   -06 10 29.2   21.8i 14QL441   W84  C~1bR3      
2015 11  01.071169 02 24 53.25   -06 10 29.3   21.5z 14QL441   W84  C~1bR3      
2015 11  05.056852 02 24 31.74   -06 11 38.2   22.3r 14QL441   W84  C~1yHA      
2015 11  05.059201 02 24 31.73   -06 11 38.2   21.7i 14QL441   W84  C~1yHA      
2015 11  05.063183 02 24 31.70   -06 11 38.2   21.8z 14QL441   W84  C~1yHA      
2015 11  08.27582  02 24 14.46   -06 12 26.5   22.1R 14QL441   G37  C~1ddr      
2015 11  08.34225  02 24 14.08   -06 12 27.4         14QL441   G37  C~1ddr      
2015 11  13.149485 02 23 48.56   -06 13 25.9   22.7g 14QL441   W84  C~1yHA      
2015 11  13.151690 02 23 48.54   -06 13 25.7   22.0r 14QL441   W84  C~1yHA      
2015 11  13.154062 02 23 48.53   -06 13 25.8   21.3i 14QL441   W84  C~1yHA      
2015 11  13.158044 02 23 48.51   -06 13 25.8   21.6z 14QL441   W84  C~1yHA      
2015 11  20.033866 02 23 13.04   -06 14 20.5   21.9z 14QL441   W84  C~1yHA      

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     0.27       0.00    -0.01
  2   0.0000     -0.31     0.01       0.01     0.05
  3   0.0000     -0.21     0.17      -0.14    -0.04
  4   0.0000     -0.52    -0.05      -0.13     0.06
  5   0.0464   -600.73    -0.33    -373.26     0.43
  6   0.0464   -600.56    -0.05    -373.65     0.09
  7   0.0464   -600.76    -0.14    -373.78     0.00
  8   0.0464   -600.87    -0.06    -373.64     0.22
  9   0.0767  -1198.59     0.06    -565.21     0.20
 10   0.0767  -1198.91    -0.11    -565.20     0.24
 11   0.0767  -1199.12    -0.08    -565.34     0.16
 12   0.0768  -1199.22     0.32    -565.62     0.00
 13   0.0987  -1716.40    -0.28    -671.28    -0.02
 14   0.0987  -1716.47    -0.19    -671.47    -0.18
 15   0.0987  -1716.67    -0.24    -671.61    -0.29
 16   0.0987  -1716.81    -0.11    -671.56    -0.20
 17   0.1011  -1776.63    -0.15    -681.42    -0.36
 18   0.1011  -1776.77    -0.13    -681.37    -0.29
 19   0.1011  -1776.98    -0.18    -681.51    -0.40
 20   0.1011  -1777.16    -0.08    -681.55    -0.40
 21   0.1041  -1852.87     0.14    -692.45     0.18
 22   0.1177  -2213.51     0.40    -737.77     0.03
 23   0.1202  -2280.15     0.04    -744.64    -0.11
 24   0.1202  -2280.26     0.10    -744.50     0.05
 25   0.1202  -2280.40     0.14    -744.45     0.12
 26   0.1202  -2280.75     0.08    -744.53     0.06
 27   0.1234  -2369.73     0.31    -752.77    -0.04
 28   0.1234  -2369.90     0.24    -752.81    -0.07
 29   0.1262  -2446.52     0.40    -759.26    -0.11
 30   0.1344  -2678.00    -0.16    -774.85     0.05
 31   0.1344  -2678.10    -0.09    -774.71     0.21
 32   0.1344  -2678.31    -0.11    -774.84     0.08
 33   0.1344  -2678.49     0.01    -774.89     0.05
 34   0.1533  -3225.53    -0.10    -792.28    -0.07
 35   0.1533  -3225.49     0.11    -792.19     0.02
 36   0.1533  -3225.81    -0.01    -792.18     0.03
 37   0.1533  -3226.22    -0.11    -792.03     0.18
 38   1.1716   2585.94    -0.02    1336.38     0.13
 39   1.1716   2585.87     0.11    1336.20    -0.07
 40   1.1716   2585.48     0.04    1336.44     0.16
 41   1.1827   2250.15     0.02    1354.94    -0.08
 42   1.1828   2250.05     0.11    1355.09     0.05
 43   1.1828   2249.73     0.12    1355.09     0.04
 44   1.2041   1606.95    -0.14    1417.20    -0.10
 45   1.2041   1606.85    -0.06    1417.35     0.02
 46   1.2041   1606.71    -0.01    1417.40     0.04
 47   1.2041   1606.25    -0.24    1417.46     0.08
 48   1.2150   1281.27    -0.15    1462.68    -0.02
 49   1.2150   1281.13    -0.10    1462.73     0.01
 50   1.2150   1280.71    -0.20    1462.88     0.11
 51   1.2238   1022.62     0.29    1505.59    -0.07
 52   1.2240   1016.99     0.03    1506.68     0.04
 53   1.2372    639.40     0.07    1582.04    -0.23
 54   1.2372    639.19     0.03    1582.33     0.02
 55   1.2372    639.01     0.04    1582.29    -0.07
 56   1.2372    638.73     0.08    1582.39    -0.03
 57   1.2560    123.03    -0.03    1712.00     0.03

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.

14QL441    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        49.109    49.261    48.966
ecceobj         0.264     0.268     0.260
incobj         26.267    26.264    26.269
qmin           35.426    35.347    35.451
qmax           62.457    62.734    62.151
amean          48.634    48.787    48.467
amin           48.151    48.314    47.889
amax           49.177    49.340    49.063
emean           0.251     0.255     0.247
emin            0.233     0.238     0.227
emax            0.270     0.273     0.268
imean          24.989    24.987    24.943
imin           24.443    24.411    24.300
imax           25.486    25.495    25.504
excite_mean     0.492     0.494     0.489
fracstop        1.000     1.000     1.000
cjmean          2.850     2.849     2.851

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       178.1     181.1     173.8
kozaiamp        180.0     180.0     179.9