Orbit Fit and Astrometric record for 13VQ25

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: 13VQ25    
# Created Fri Dec  3 02:12:15 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     59 observations of     59
# Arc:   5.98y
# First observation: 2013/11/03
#  Last observation: 2019/10/26
# Chi-squared of fit:    14.52 DOF:    112 RMS:  0.09
# Min/Max residuals:    -0.31    0.41
# Exact a, adot, b, bdot, g, gdot:
  1.856978E-05  3.348797E-02 -7.102038E-06 -1.327697E-02  2.872093E-02  1.373175E-03
# Covariance matrix:
  2.3014E-13 -1.5089E-13 -4.1719E-14  4.5581E-14 -7.5165E-14 -6.2118E-13
 -1.5089E-13  1.2904E-13  4.2676E-14 -4.4747E-14  4.3431E-14  6.0928E-13
 -4.1719E-14  4.2676E-14  1.0504E-13 -4.4518E-14  7.7110E-15  2.2839E-13
  4.5581E-14 -4.4747E-14 -4.4518E-14  2.9558E-14 -1.2672E-14 -2.3619E-13
 -7.5165E-14  4.3431E-14  7.7110E-15 -1.2672E-14  8.9479E-14  1.7389E-13
 -6.2118E-13  6.0928E-13  2.2839E-13 -2.3619E-13  1.7389E-13  3.2150E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -19.917484   13.250346   -0.452598   -0.300228   -0.828930  2456599.518228
# Heliocentric elements and errors
Epoch:              2456600.5000  =  2013/11/04
Mean Anomaly:            3.17695 +/-     0.003
Argument of Peri:      215.32824 +/-     0.009
Long of Asc Node:      153.73611 +/-     0.000
Inclination:            28.61634 +/-     0.000
Eccentricity:         0.42504706 +/-    0.0000
Semi-Major Axis:     61.79499209 +/-    0.0052
Time of Perihelion: 2455034.7019 +/-       1.6
Perihelion:          35.52921228 +/-    0.0041
Aphelion:            88.06077189 +/-    0.0080
Period (y)              485.7783 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.61723602 +/-    0.0003
Ecliptic Y            8.14873115 +/-    0.0001
Ecliptic Z          -11.86152698 +/-    0.0001
Ecliptic XDOT        -0.00103775 +/-    0.0000
Ecliptic YDOT         0.00303502 +/-    0.0000
Ecliptic ZDOT        -0.00123439 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.65079963 +/-    0.0003
Geocenter to KBO     34.81782186 +/-    0.0004
# Hcoef:  7.71

The following table shows the complete astrometric record for 13VQ25. 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 (13VQ25) followed by the observatory code and reference code for the source of the astrometry.

2013 11  03.01745  01 20 01.78   -13 06 39.1         13VQ25    W84  C~2TH5      
2013 11  04.01483  01 19 57.07   -13 06 58.8         13VQ25    W84  C~2TH5      
2013 11  05.01008  01 19 52.40   -13 07 17.7   23.4r 13VQ25    W84  C~2TH5      
2014 08  19.34501  01 33 50.058  -12 09 44.84  23.0i 13VQ25    W84  C~4yRP      
2014 08  19.34501  01 33 50.06   -12 09 44.8   23.2i 13VQ25    W84  C~3clV      
2014 08  19.34640  01 33 50.058  -12 09 44.79  23.5r 13VQ25    W84  C~4yRP      
2014 08  19.34640  01 33 50.06   -12 09 44.8   23.5r 13VQ25    W84  C~3clV      
2014 08  19.34777  01 33 50.053  -12 09 44.95  22.6z 13VQ25    W84  C~4yRP      
2014 08  19.34777  01 33 50.05   -12 09 45.0   22.7z 13VQ25    W84  C~3clV      
2014 09  16.265139 01 32 22.95   -12 32 45.9   22.6i 13VQ25    W84  C~352E      
2014 09  16.26566  01 32 22.949  -12 32 45.93  23.0i 13VQ25    W84  C~4yRP      
2014 09  25.24657  01 31 43.530  -12 39 48.00  22.9r 13VQ25    W84  C~4yRP      
2014 09  25.24657  01 31 43.53   -12 39 48.0   23.0r 13VQ25    W84  C~3clV      
2014 09  25.24794  01 31 43.518  -12 39 48.02  24.2g 13VQ25    W84  C~4yRP      
2014 12  13.13697  01 26 02.813  -13 04 28.87  22.7r 13VQ25    W84  C~4yRP      
2014 12  13.13697  01 26 02.81   -13 04 28.9   22.9r 13VQ25    W84  C~3clV      
2014 12  20.13143  01 25 50.724  -13 02 25.55  24.1g 13VQ25    W84  C~4yRP      
2014 12  20.13279  01 25 50.714  -13 02 25.40  23.0i 13VQ25    W84  C~4yRP      
2014 12  20.13279  01 25 50.71   -13 02 25.4   22.9i 13VQ25    W84  C~3clV      
2015 08  18.41773  01 42 10.762  -12 03 06.55  23.7r 13VQ25    W84  C~4yRP      
2015 09  13.27258  01 40 59.092  -12 24 29.39  23.3i 13VQ25    W84  C~4yRP      
2015 09  13.27258  01 40 59.09   -12 24 29.4   23.4i 13VQ25    W84  C~3clV      
2015 09  13.27396  01 40 59.087  -12 24 29.51  23.0r 13VQ25    W84  C~4yRP      
2015 09  13.27396  01 40 59.09   -12 24 29.5   23.3r 13VQ25    W84  C~3clV      
2015 10  17.19620  01 38 21.663  -12 48 58.45  23.2r 13VQ25    W84  C~4yRP      
2015 11  02.17157  01 37 00.447  -12 56 38.38  24.4g 13VQ25    W84  C~4yRP      
2015 11  06.24344  01 36 40.503  -12 58 03.56  23.8g 13VQ25    W84  C~4yRP      
2015 11  06.24344  01 36 40.50   -12 58 03.6   24.0g 13VQ25    W84  C~3clV      
2015 11  07.13602  01 36 36.219  -12 58 20.28  22.8i 13VQ25    W84  C~4yRP      
2015 11  07.13602  01 36 36.22   -12 58 20.3   22.8i 13VQ25    W84  C~3clV      
2015 11  20.11807  01 35 37.771  -13 01 05.08  22.3z 13VQ25    W84  C~4yRP      
2015 11  20.11807  01 35 37.77   -13 01 05.1   22.4z 13VQ25    W84  C~3clV      
2015 12  18.135382 01 34 11.45   -12 58 19.3   22.3z 13VQ25    W84  C~352E      
2016 01  01.06411  01 33 56.050  -12 52 45.60  23.7r 13VQ25    W84  C~4yRP      
2016 01  01.06411  01 33 56.05   -12 52 45.6   23.8r 13VQ25    W84  C~3clV      
2016 01  01.06547  01 33 56.048  -12 52 45.65  22.8i 13VQ25    W84  C~4yRP      
2016 01  01.06547  01 33 56.05   -12 52 45.6   23.3i 13VQ25    W84  C~3clV      
2016 01  01.06685  01 33 56.055  -12 52 45.58  24.2g 13VQ25    W84  C~4yRP      
2016 09  30.22822  01 48 04.117  -12 31 50.11  22.4i 13VQ25    W84  C~4yRP      
2016 09  30.22822  01 48 04.12   -12 31 50.1   22.6i 13VQ25    W84  C~3clV      
2016 09  30.22961  01 48 04.101  -12 31 50.26  23.4r 13VQ25    W84  C~4yRP      
2016 09  30.22961  01 48 04.10   -12 31 50.2   23.3r 13VQ25    W84  C~3clV      
2016 09  30.23097  01 48 04.098  -12 31 50.26  24.4g 13VQ25    W84  C~4yRP      
2016 09  30.23097  01 48 04.10   -12 31 50.2   24.4g 13VQ25    W84  C~3clV      
2016 10  01.34236  01 47 58.862  -12 32 39.22  23.5r 13VQ25    W84  C~4yRP      
2016 10  01.34375  01 47 58.860  -12 32 39.32  23.2i 13VQ25    W84  C~4yRP      
2016 10  01.34375  01 47 58.86   -12 32 39.3   23.2i 13VQ25    W84  C~3clV      
2016 10  01.34512  01 47 58.849  -12 32 39.33  22.9g 13VQ25    W84  C~4yRP      
2017 10  30.27947  01 53 53.099  -12 42 19.40  22.9z 13VQ25    W84  C~4yRP      
2017 11  17.12871  01 52 26.013  -12 47 44.67  23.9g 13VQ25    W84  C~4yRP      
2017 11  18.17969  01 52 21.259  -12 47 55.16  22.8r 13VQ25    W84  C~4yRP      
2017 11  18.18107  01 52 21.254  -12 47 55.25  23.9g 13VQ25    W84  C~4yRP      
2017 12  15.10739  01 50 44.593  -12 46 33.95  23.5g 13VQ25    W84  C~4yRP      
2017 12  22.12476  01 50 29.371  -12 44 25.64  23.4r 13VQ25    W84  C~4yRP      
2018 11  17.09484  02 00 41.445  -12 39 46.35  23.0i 13VQ25    W84  C~4yRP      
2018 12  02.13009  01 59 37.481  -12 40 51.23  23.2r 13VQ25    W84  C~4yRP      
2018 12  02.13146  01 59 37.452  -12 40 51.35  24.2g 13VQ25    W84  C~4yRP      
2019 10  26.303510 02 10 43.175  -12 23 05.32  23.3G 13VQ25    G37  C~3clV      
2019 10  26.360720 02 10 42.879  -12 23 07.13        13VQ25    G37  C~3clV      

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    -0.01       0.00    -0.05
     2   0.0027      0.00     0.09       0.00     0.02
     3   0.0055      0.00     0.04       0.00     0.00
     4   0.7921      0.00     0.00       0.00     0.03
     5   0.7921      0.00    -0.03       0.00    -0.01
     6   0.7921      0.00     0.01       0.00     0.11
     7   0.7921      0.00     0.04       0.00     0.10
     8   0.7921      0.00    -0.06       0.00    -0.03
     9   0.7921      0.00    -0.02       0.00     0.02
    10   0.8686      0.00    -0.01       0.00    -0.03
    11   0.8686      0.00     0.01       0.00    -0.04
    12   0.8932      0.00     0.03       0.00     0.00
    13   0.8932      0.00     0.03       0.00     0.00
    14   0.8932      0.00    -0.05       0.00     0.04
    15   1.1092      0.00     0.00       0.00    -0.01
    16   1.1092      0.00    -0.04       0.00    -0.04
    17   1.1283      0.00     0.11       0.00    -0.07
    18   1.1283      0.00    -0.07       0.00     0.05
    19   1.1283      0.00    -0.01       0.00     0.05
    20   1.7889      0.00    -0.12       0.00    -0.06
    21   1.8597      0.00     0.00       0.00     0.02
    22   1.8597      0.00     0.03       0.00     0.03
    23   1.8597      0.00     0.08       0.00    -0.01
    24   1.8597      0.00     0.04       0.00    -0.02
    25   1.9526      0.00     0.09       0.00    -0.16
    26   1.9963      0.00    -0.03       0.00    -0.03
    27   2.0075      0.00    -0.07       0.00    -0.09
    28   2.0075      0.00    -0.03       0.00    -0.05
    29   2.0099      0.00     0.06       0.00     0.01
    30   2.0099      0.00     0.04       0.00     0.03
    31   2.0455      0.00    -0.02       0.00     0.01
    32   2.0455      0.00    -0.03       0.00    -0.01
    33   2.1222      0.00    -0.31       0.00     0.41
    34   2.1603      0.00     0.02       0.00     0.02
    35   2.1603      0.00     0.02       0.00     0.02
    36   2.1603      0.00     0.03       0.00    -0.02
    37   2.1603      0.00    -0.00       0.00    -0.07
    38   2.1603      0.00     0.11       0.00    -0.04
    39   2.9082      0.00     0.10       0.00     0.12
    40   2.9082      0.00     0.05       0.00     0.11
    41   2.9082      0.00    -0.10       0.00     0.08
    42   2.9082      0.00    -0.09       0.00     0.02
    43   2.9082      0.00    -0.01       0.00     0.14
    44   2.9082      0.00    -0.04       0.00     0.08
    45   2.9112      0.00     0.02       0.00    -0.16
    46   2.9112      0.00     0.09       0.00    -0.18
    47   2.9112      0.00     0.09       0.00    -0.20
    48   2.9112      0.00     0.02       0.00    -0.15
    49   3.9898      0.00     0.05       0.00     0.13
    50   4.0386      0.00     0.00       0.00     0.09
    51   4.0415      0.00     0.02       0.00    -0.01
    52   4.0415      0.00     0.04       0.00    -0.09
    53   4.1152      0.00     0.16       0.00     0.12
    54   4.1344      0.00     0.05       0.00     0.01
    55   5.0379      0.00     0.10       0.00     0.12
    56   5.0790      0.00     0.07       0.00     0.06
    57   5.0790      0.00    -0.28       0.00    -0.07
    58   5.9775      0.00    -0.04       0.00    -0.04
    59   5.9777      0.00     0.02       0.00    -0.12

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.

13VQ25    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        62.383    62.382    62.383
ecceobj         0.431     0.431     0.431
incobj         28.559    28.559    28.559
qmin           34.033    34.028    34.012
qmax           90.827    90.734    90.768
amean          61.676    61.542    61.608
amin           60.935    60.680    60.711
amax           62.695    62.649    62.681
emean           0.429     0.427     0.429
emin            0.409     0.407     0.409
emax            0.449     0.448     0.449
imean          27.199    27.238    27.163
imin           26.564    26.573    26.486
imax           28.126    28.123    28.055
excite_mean     0.627     0.626     0.627
fracstop        1.000     1.000     1.000
cjmean          2.788     2.788     2.788

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       193.7     191.4     194.2
kozaiamp        179.9     179.9     179.9