Orbit Fit and Astrometric record for 14QF442

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: 14QF442   
# Created Sat Dec  4 02:12:37 2021
# Orbit generated from Bernstein formalism
# Fitting     62 observations of     62
# Arc:   4.08y
# First observation: 2014/08/16
#  Last observation: 2018/09/15
Preliminary a, adot, b, bdot, g, gdot:
   0.000110   0.031220  -0.000022  -0.001180   0.027820   0.000000
# Chi-squared of fit:    23.44 DOF:    118 RMS:  0.11
# Min/Max residuals:    -0.27    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.783133E-05  3.153145E-02 -9.020265E-07 -1.161222E-03  2.784564E-02  1.817895E-03
# Covariance matrix:
  7.7504E-14 -1.4815E-14 -7.4922E-15 -2.7381E-15  8.5049E-14 -5.2208E-14
 -1.4815E-14  1.3321E-13 -9.4397E-15 -1.9896E-15  1.1580E-13  1.3065E-12
 -7.4922E-15 -9.4397E-15  5.1565E-14 -1.9325E-14 -2.9303E-14 -7.7458E-14
 -2.7381E-15 -1.9896E-15 -1.9325E-14  1.6511E-14 -9.4517E-15 -1.1736E-14
  8.5049E-14  1.1580E-13 -2.9303E-14 -9.4517E-15  3.4009E-13  9.7740E-13
 -5.2208E-14  1.3065E-12 -7.7458E-14 -1.1736E-14  9.7740E-13  1.5033E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -31.260486  -41.333419   -0.078414   -0.525231   -0.865422  2456885.726878
# Heliocentric elements and errors
Epoch:              2456880.5000  =  2014/08/11
Mean Anomaly:           13.17358 +/-     0.025
Argument of Peri:      246.22172 +/-     0.040
Long of Asc Node:       52.93765 +/-     0.000
Inclination:            30.50929 +/-     0.000
Eccentricity:         0.20362272 +/-    0.0001
Semi-Major Axis:     45.70161085 +/-    0.0044
Time of Perihelion: 2452751.0050 +/-       7.8
Perihelion:          36.39572436 +/-    0.0049
Aphelion:            55.00749733 +/-    0.0063
Period (y)              308.9623 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           23.86090832 +/-    0.0005
Ecliptic Y          -20.88215498 +/-    0.0004
Ecliptic Z          -18.63596703 +/-    0.0004
Ecliptic XDOT         0.00211286 +/-    0.0000
Ecliptic YDOT         0.00226187 +/-    0.0000
Ecliptic ZDOT        -0.00019023 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.77915999 +/-    0.0004
Geocenter to KBO     35.91227061 +/-    0.0008
# Hcoef:  7.57

The following table shows the complete astrometric record for 14QF442. 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 (14QF442) followed by the observatory code and reference code for the source of the astrometry.

2014 08  16.226100 22 16 26.11   -44 28 52.5   22.8i 14QF442   W84  C~2Bnh      
2014 08  16.22611  22 16 26.113  -44 28 52.65  23.0i 14QF442   W84  C~4yTx      
2014 08  16.22611  22 16 26.11   -44 28 52.6   23.1i 14QF442   W84  C~3cnK      
2014 08  17.217072 22 16 19.26   -44 29 21.6   23.7g 14QF442   W84  C~2Bnh      
2014 08  17.21708  22 16 19.272  -44 29 21.82  23.9g 14QF442   W84  C~4yTx      
2014 08  17.21708  22 16 19.27   -44 29 21.8   24.2g 14QF442   W84  C~3cnK      
2014 08  18.224826 22 16 12.30   -44 29 50.3   23.3r 14QF442   W84  C~2Bnh      
2014 08  18.22483  22 16 12.305  -44 29 50.41  23.0r 14QF442   W84  C~4yTx      
2014 08  18.22483  22 16 12.31   -44 29 50.5   23.4r 14QF442   W84  C~3cnK      
2014 08  20.210637 22 15 58.51   -44 30 44.2   23.0r 14QF442   W84  C~2Bnh      
2014 08  20.21064  22 15 58.517  -44 30 44.53  23.4r 14QF442   W84  C~4yTx      
2014 08  20.21064  22 15 58.52   -44 30 44.5   23.3r 14QF442   W84  C~3cnK      
2014 08  20.21772  22 15 58.462  -44 30 44.65  24.3g 14QF442   W84  C~4yTx      
2014 08  20.21772  22 15 58.46   -44 30 44.7   24.3g 14QF442   W84  C~3cnK      
2014 08  22.209838 22 15 44.55   -44 31 34.9   23.0r 14QF442   W84  C~2Bnh      
2014 08  22.20985  22 15 44.555  -44 31 35.17  23.0r 14QF442   W84  C~4yTx      
2014 08  22.20985  22 15 44.56   -44 31 35.2   23.2r 14QF442   W84  C~3cnK      
2014 09  24.107731 22 12 06.10   -44 35 56.8   23.0r 14QF442   W84  C~2Bnh      
2014 09  24.10774  22 12 06.097  -44 35 56.93  23.2r 14QF442   W84  C~4yTx      
2014 09  24.10774  22 12 06.10   -44 35 56.9   23.1r 14QF442   W84  C~3cnK      
2014 09  26.11019  22 11 54.573  -44 35 36.22  24.0g 14QF442   W84  C~4yTx      
2014 09  26.11019  22 11 54.57   -44 35 36.2   24.0g 14QF442   W84  C~3cnK      
2014 10  14.12585  22 10 27.776  -44 29 22.46  23.5i 14QF442   W84  C~4yTx      
2014 10  21.142199 22 10 03.56   -44 25 30.1   23.7g 14QF442   W84  C~352Q      
2014 10  21.142720 22 10 03.56   -44 25 30.1   23.7g 14QF442   W84  C~2Bnh      
2014 10  21.14273  22 10 03.562  -44 25 30.14  23.6g 14QF442   W84  C~4yTx      
2014 10  22.16512  22 10 00.58   -44 24 52.9   22.7i 14QF442   W84  C~3cnK      
2014 10  31.11258  22 09 40.098  -44 18 45.42  23.3z 14QF442   W84  C~4yTx      
2015 09  13.133380 22 22 30.13   -43 54 40.5   22.9i 14QF442   W84  C~352Q      
2015 09  13.13390  22 22 30.130  -43 54 40.55  23.1i 14QF442   W84  C~4yTx      
2015 09  13.134745 22 22 30.12   -43 54 40.7   23.1r 14QF442   W84  C~352Q      
2015 09  13.13528  22 22 30.123  -43 54 40.68  23.3r 14QF442   W84  C~4yTx      
2015 09  13.136123 22 22 30.12   -43 54 40.6   23.4g 14QF442   W84  C~352Q      
2015 09  13.13665  22 22 30.116  -43 54 40.56  23.8g 14QF442   W84  C~4yTx      
2016 09  12.085833 22 31 31.38   -43 10 08.8   22.4z 14QF442   W84  C~2IY9      
2016 09  12.08584  22 31 31.388  -43 10 08.60  22.0z 14QF442   W84  C~4yTx      
2016 09  12.08584  22 31 31.39   -43 10 08.8   22.9z 14QF442   W84  C~3cnK      
2016 09  24.116725 22 30 15.60   -43 10 27.5   22.8i 14QF442   W84  C~2IY9      
2016 09  24.11673  22 30 15.601  -43 10 27.62  23.1i 14QF442   W84  C~4yTx      
2016 09  24.11673  22 30 15.60   -43 10 27.6   23.1i 14QF442   W84  C~3cnK      
2016 09  24.11812  22 30 15.601  -43 10 27.78  23.3r 14QF442   W84  C~4yTx      
2016 09  24.11812  22 30 15.60   -43 10 27.8   23.4r 14QF442   W84  C~3cnK      
2016 09  24.119502 22 30 15.59   -43 10 27.5   23.6g 14QF442   W84  C~2IY9      
2016 09  24.11951  22 30 15.600  -43 10 27.70  23.6g 14QF442   W84  C~4yTx      
2016 09  24.11951  22 30 15.60   -43 10 27.6   23.9g 14QF442   W84  C~3cnK      
2016 10  02.087731 22 29 30.25   -43 09 14.5   23.3r 14QF442   W84  C~2IY9      
2016 10  02.08774  22 29 30.249  -43 09 14.69  23.3r 14QF442   W84  C~4yTx      
2016 10  02.08774  22 29 30.24   -43 09 14.7   23.2r 14QF442   W84  C~3cnK      
2016 10  02.089097 22 29 30.22   -43 09 14.4   23.4g 14QF442   W84  C~2IY9      
2016 10  02.08911  22 29 30.238  -43 09 14.50  23.8g 14QF442   W84  C~4yTx      
2016 10  02.08911  22 29 30.24   -43 09 14.5   23.9g 14QF442   W84  C~3cnK      
2016 10  02.101516 22 29 30.16   -43 09 14.3   23.0i 14QF442   W84  C~2IY9      
2016 10  02.10152  22 29 30.169  -43 09 14.47  23.3i 14QF442   W84  C~4yTx      
2016 10  02.10152  22 29 30.17   -43 09 14.5   23.3i 14QF442   W84  C~3cnK      
2017 08  26.21532  22 42 09.933  -42 17 49.95  22.8r 14QF442   W84  C~4yTx      
2017 08  26.21668  22 42 09.917  -42 17 49.87  23.1i 14QF442   W84  C~4yTx      
2017 08  26.21806  22 42 09.907  -42 17 49.79  23.9g 14QF442   W84  C~4yTx      
2017 10  27.05548  22 36 26.211  -42 13 16.43  23.4i 14QF442   W84  C~4yTx      
2017 10  30.01198  22 36 17.812  -42 11 25.26  23.0z 14QF442   W84  C~4yTx      
2017 11  16.08604  22 35 51.258  -41 58 20.92  23.3r 14QF442   W84  C~4yTx      
2018 09  15.22287  22 48 28.065  -41 34 32.41  23.2i 14QF442   W84  C~4yTx      
2018 09  15.22423  22 48 28.035  -41 34 32.46  23.1r 14QF442   W84  C~4yTx      

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     0.05
     2   0.0000     -0.04    -0.03      -0.09    -0.04
     3   0.0000     -0.03    -0.02      -0.15    -0.10
     4   0.0027    -78.76    -0.13       4.25     0.14
     5   0.0027    -78.73    -0.10       3.99    -0.11
     6   0.0027    -78.74    -0.11       4.02    -0.09
     7   0.0055   -158.40     0.03       9.32     0.11
     8   0.0055   -158.40     0.03       9.19    -0.01
     9   0.0055   -158.39     0.04       9.09    -0.12
    10   0.0109   -314.96     0.13      21.96     0.18
    11   0.0109   -314.99     0.10      21.64    -0.14
    12   0.0109   -315.03     0.06      21.63    -0.16
    13   0.0109   -315.65     0.00      21.73    -0.11
    14   0.0109   -315.61     0.04      21.76    -0.07
    15   0.0164   -471.80     0.04      38.14     0.29
    16   0.0164   -471.83     0.01      37.83    -0.03
    17   0.0164   -471.87    -0.03      37.87     0.02
    18   0.1065  -2707.43     0.15     760.52     0.04
    19   0.1065  -2707.47     0.11     760.42    -0.05
    20   0.1065  -2707.51     0.07     760.41    -0.06
    21   0.1119  -2811.61    -0.05     829.38    -0.04
    22   0.1119  -2811.59    -0.03     829.35    -0.07
    23   0.1613  -3509.66     0.04    1546.28    -0.16
    24   0.1805  -3653.92    -0.15    1863.25     0.32
    25   0.1805  -3653.92    -0.14    1863.25     0.30
    26   0.1805  -3653.92    -0.14    1863.21     0.25
    27   0.1833  -3668.27     0.04    1910.14    -0.22
    28   0.2078  -3722.53    -0.02    2334.93    -0.06
    29   1.0757   4416.74     0.03     183.87     0.11
    30   1.0757   4416.72     0.05     183.82     0.05
    31   1.0757   4416.56    -0.06     183.73    -0.06
    32   1.0757   4416.59     0.02     183.74    -0.07
    33   1.0757   4416.60     0.08     183.82    -0.01
    34   1.0757   4416.58     0.09     183.88     0.03
    35   2.0749  10884.47    -0.27     -60.93     0.05
    36   2.0749  10884.57    -0.17     -60.98    -0.00
    37   2.0749  10884.64    -0.10     -60.80     0.18
    38   2.1078  10136.99    -0.04     302.50     0.12
    39   2.1078  10136.94    -0.08     302.41     0.03
    40   2.1078  10136.95    -0.08     302.38     0.00
    41   2.1078  10136.85    -0.09     302.23    -0.20
    42   2.1078  10136.87    -0.08     302.24    -0.19
    43   2.1079  10136.89     0.02     302.55     0.07
    44   2.1079  10136.94     0.08     302.41    -0.07
    45   2.1079  10136.90     0.03     302.32    -0.16
    46   2.1297   9727.49     0.16     593.66     0.03
    47   2.1297   9727.30    -0.03     593.53    -0.10
    48   2.1297   9727.40     0.06     593.49    -0.13
    49   2.1297   9727.25    -0.02     593.90     0.22
    50   2.1297   9727.40     0.13     593.71     0.03
    51   2.1297   9727.38     0.11     593.72     0.04
    52   2.1297   9726.70     0.03     594.28     0.11
    53   2.1297   9726.71     0.03     594.06    -0.11
    54   2.1297   9726.71     0.04     594.09    -0.08
    55   3.0280  18607.15    -0.06    -630.52    -0.12
    56   3.0280  18607.03    -0.07    -630.36     0.02
    57   3.0280  18606.97    -0.02    -630.24     0.13
    58   3.1973  15368.84     0.17    1447.32    -0.11
    59   3.2054  15338.93     0.06    1589.78     0.16
    60   3.2522  15448.73    -0.02    2423.30    -0.00
    61   4.0821  23611.10     0.13    -464.19    -0.04
    62   4.0821  23610.78    -0.09    -464.06     0.05

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.

14QF442    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.933    45.947    45.919
ecceobj         0.208     0.208     0.208
incobj         30.545    30.545    30.545
qmin           35.746    35.707    35.786
qmax           56.607    56.512    56.538
amean          45.960    45.971    45.947
amin           45.579    45.566    45.553
amax           46.430    46.426    46.422
emean           0.201     0.201     0.201
emin            0.183     0.183     0.183
emax            0.220     0.220     0.219
imean          29.632    29.629    29.635
imin           29.208    29.184    29.234
imax           29.929    29.934    29.925
excite_mean     0.534     0.534     0.534
fracstop        1.000     1.000     1.000
cjmean          2.760     2.760     2.760

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       188.4     189.2     187.8
kozaiamp        179.9     179.9     180.0