Orbit Fit and Astrometric record for 19QN110

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: 19QN110   
# Created Tue Apr  1 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting      8 observations of      8
# Arc:   2.10y
# First observation: 2019/08/28
#  Last observation: 2021/10/04
Preliminary a, adot, b, bdot, g, gdot:
   0.000001   0.018241   0.000001  -0.000912   0.020990   0.000000
# Chi-squared of fit:     7.30 DOF:     10 RMS:  0.17
# Min/Max residuals:    -0.36    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.408248E-05  1.823994E-02 -4.839458E-07 -9.118926E-04  2.098010E-02  1.747214E-04
# Covariance matrix:
  7.3915E-13  5.0494E-13  3.6312E-15 -3.0954E-14  1.4851E-12  1.6446E-11
  5.0494E-13  3.7473E-12  2.5939E-14 -2.0576E-13  4.1374E-12  1.1069E-10
  3.6312E-15  2.5939E-14  3.5587E-13 -2.0824E-13  2.6240E-14  8.6238E-13
 -3.0954E-14 -2.0576E-13 -2.0824E-13  2.6109E-13 -2.1395E-13 -6.7864E-12
  1.4851E-12  4.1374E-12  2.6240E-14 -2.1395E-13  6.6277E-12  1.1454E-10
  1.6446E-11  1.1069E-10  8.6238E-13 -6.7864E-12  1.1454E-10  3.6560E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.156996   -7.601718    0.305703   -0.019320   -0.956781  2458723.711696
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:          173.83123 +/-     2.683
Argument of Peri:       26.99499 +/-     2.688
Long of Asc Node:      150.47760 +/-     0.011
Inclination:             3.08471 +/-     0.001
Eccentricity:         0.06552253 +/-    0.0004
Semi-Major Axis:     45.64982845 +/-    0.0126
Time of Perihelion: 2516979.2928 +/-     839.5
Perihelion:          42.65873619 +/-    0.0207
Aphelion:            48.64092070 +/-    0.0217
Period (y)              308.4373 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           48.14663196 +/-    0.0058
Ecliptic Y           -6.74057411 +/-    0.0008
Ecliptic Z           -0.96245764 +/-    0.0001
Ecliptic XDOT         0.00034355 +/-    0.0000
Ecliptic YDOT         0.00235721 +/-    0.0000
Ecliptic ZDOT        -0.00011966 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   48.62571164 +/-    0.0057
Geocenter to KBO     47.66420781 +/-    0.0058
# Hcoef:  9.28

The following table shows the complete astrometric record for 19QN110. 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 (19QN110) followed by the observatory code and reference code for the source of the astrometry.

2019 08  28.210895 23 33 54.491  -04 04 45.15  26.0r 19QN110   W84  C~7XLi      
2019 08  28.388381 23 33 53.839  -04 04 49.49  26.0r 19QN110   W84  C~7XLi      
2019 09  29.013696 23 31 52.420  -04 18 09.28  26.1r 19QN110   W84  C~7XLi      
2019 09  29.177510 23 31 51.789  -04 18 13.63  26.1r 19QN110   W84  C~7XLi      
2020 10  18.012125 23 34 38.813  -04 03 41.11  25.9r 19QN110   W84  C~7XLi      
2020 10  18.176134 23 34 38.283  -04 03 45.04  25.9r 19QN110   W84  C~7XLi      
2021 10  04.002582 23 39 24.718  -03 36 22.83  26.2r 19QN110   W84  C~7XLi      
2021 10  04.175328 23 39 24.065  -03 36 27.56  26.2r 19QN110   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    -0.07       0.00    -0.04
     2   0.0005    -10.68     0.07      -0.13    -0.07
     3   0.0871  -1995.36     0.08     -17.43     0.24
     4   0.0875  -2005.75    -0.07     -17.70    -0.06
     5   1.1411    634.44     0.08    -203.38     0.24
     6   1.1416    625.60    -0.08    -203.86    -0.36
     7   2.1021   5213.45     0.13    -394.27     0.29
     8   2.1026   5202.59    -0.13    -394.73    -0.23

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.

19QN110    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.724    45.760    45.688
ecceobj         0.063     0.062     0.063
incobj          3.078     3.078     3.077
qmin           41.800    41.868    41.720
qmax           49.623    49.691    49.561
amean          45.596    45.632    45.560
amin           45.225    45.270    45.192
amax           45.977    46.017    45.943
emean           0.066     0.066     0.067
emin            0.053     0.053     0.055
emax            0.080     0.080     0.080
imean           2.557     2.555     2.559
imin            2.095     2.095     2.091
imax            2.987     2.980     2.995
excite_mean     0.080     0.080     0.081
fracstop        1.000     1.000     1.000
cjmean          3.113     3.114     3.113

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     178.8     177.4
kozaiamp        180.0     179.9     180.0