Orbit Fit and Astrometric record for 19QY110

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: 19QY110   
# Created Tue Apr  1 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting      8 observations of      8
# Arc:   2.10y
# First observation: 2019/08/30
#  Last observation: 2021/10/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000008   0.023346  -0.000000  -0.000390   0.024154   0.000000
# Chi-squared of fit:     0.75 DOF:     10 RMS:  0.05
# Min/Max residuals:    -0.10    0.10
# Exact a, adot, b, bdot, g, gdot:
  1.524920E-05  2.342689E-02 -3.358485E-07 -3.909217E-04  2.421277E-02  2.019290E-03
# Covariance matrix:
  7.3975E-13  6.2745E-13  8.7521E-16 -1.2494E-14  1.6439E-12  1.4431E-11
  6.2745E-13  4.7973E-12  9.3939E-15 -8.5005E-14  5.2327E-12  1.0583E-10
  8.7521E-16  9.3939E-15  3.5405E-13 -2.0563E-13  8.3227E-15  2.3651E-13
 -1.2494E-14 -8.5005E-14 -2.0563E-13  2.5054E-13 -8.8762E-14 -2.0431E-12
  1.6439E-12  5.2327E-12  8.3227E-15 -8.8762E-14  8.0363E-12  1.0720E-10
  1.4431E-11  1.0583E-10  2.3651E-13 -2.0431E-12  1.0720E-10  2.5675E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.773417   -7.699583    0.271328   -0.029919   -0.966539  2458725.713221
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:           76.97978 +/-     0.146
Argument of Peri:      154.31993 +/-     0.192
Long of Asc Node:      111.15032 +/-     0.031
Inclination:             1.98525 +/-     0.001
Eccentricity:         0.08321161 +/-    0.0022
Semi-Major Axis:     42.78468168 +/-    0.0153
Time of Perihelion: 2436862.7692 +/-      39.7
Perihelion:          39.22449946 +/-    0.0931
Aphelion:            46.34486391 +/-    0.0935
Period (y)              279.8599 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.83333477 +/-    0.0048
Ecliptic Y           -5.93616749 +/-    0.0007
Ecliptic Z           -1.27814360 +/-    0.0002
Ecliptic XDOT         0.00058818 +/-    0.0000
Ecliptic YDOT         0.00259530 +/-    0.0000
Ecliptic ZDOT        -0.00005147 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.27173563 +/-    0.0047
Geocenter to KBO     41.30052806 +/-    0.0048
# Hcoef:  8.58

The following table shows the complete astrometric record for 19QY110. 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 (19QY110) followed by the observatory code and reference code for the source of the astrometry.

2019 08  30.212420 23 34 31.528  -04 41 02.69  24.7r 19QY110   W84  C~7XLi      
2019 08  30.387214 23 34 30.777  -04 41 07.54  24.7r 19QY110   W84  C~7XLi      
2019 09  28.012277 23 32 25.601  -04 54 40.97  24.7r 19QY110   W84  C~7XLi      
2019 09  28.177548 23 32 24.869  -04 54 45.46  24.7r 19QY110   W84  C~7XLi      
2020 10  18.012125 23 36 00.860  -04 32 44.31  24.9r 19QY110   W84  C~7XLi      
2020 10  18.176134 23 36 00.248  -04 32 47.99  24.9r 19QY110   W84  C~7XLi      
2021 10  06.002765 23 41 46.533  -03 57 09.80  24.7r 19QY110   W84  C~7XLi      
2021 10  06.167954 23 41 45.824  -03 57 13.97  24.7r 19QY110   W84  C~7XLi      

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     0.02
     2   0.0005    -12.23    -0.01      -0.01     0.08
     3   0.0788  -2052.51     0.04      -7.87    -0.09
     4   0.0793  -2064.33    -0.04      -7.68    -0.02
     5   1.1357   1423.85     0.03     -70.89     0.03
     6   1.1361   1413.99    -0.03     -70.65    -0.01
     7   2.1021   7019.82     0.04    -163.85    -0.10
     8   2.1025   7008.42    -0.04    -163.46     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.

19QY110    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.803    42.856    42.752
ecceobj         0.079     0.083     0.075
incobj          1.986     1.986     1.985
qmin           38.433    38.514    38.696
qmax           47.216    47.217    46.877
amean          42.692    42.752    42.644
amin           42.337    42.399    42.311
amax           43.065    43.118    43.013
emean           0.072     0.072     0.063
emin            0.045     0.043     0.034
emax            0.097     0.096     0.090
imean           1.757     1.814     1.827
imin            0.130     0.130     0.130
imax            3.225     3.297     3.218
excite_mean     0.080     0.081     0.073
fracstop        1.000     1.000     1.000
cjmean          3.078     3.079     3.079

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       174.6     173.3     172.6
kozaiamp        180.0     180.0     180.0