Orbit Fit and Astrometric record for 22FH9

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: 22FH9     
# Created Fri Mar 29 01:19:47 2024
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   2.09y
# First observation: 2021/03/22
#  Last observation: 2023/04/24
Preliminary a, adot, b, bdot, g, gdot:
  -0.000002   0.031910   0.000004   0.003038   0.029907   0.000000
# Chi-squared of fit:    60.54 DOF:     20 RMS:  0.38
# Min/Max residuals:    -0.72    0.83
# Exact a, adot, b, bdot, g, gdot:
  1.295164E-05  3.194126E-02  4.228440E-06  3.045605E-03  2.977057E-02  2.544158E-03
# Covariance matrix:
  3.2574E-13 -1.0582E-12  3.1971E-14 -1.8231E-13  2.6151E-12 -3.1802E-11
 -1.0582E-12  1.2259E-11 -4.8175E-13  2.7533E-12 -4.5569E-11  4.7998E-10
  3.1971E-14 -4.8175E-13  2.6841E-13 -2.8724E-13  2.0354E-12 -2.0220E-11
 -1.8231E-13  2.7533E-12 -2.8724E-13  8.8107E-13 -1.1658E-11  1.1568E-10
  2.6151E-12 -4.5569E-11  2.0354E-12 -1.1658E-11  2.1723E-10 -2.0310E-09
 -3.1802E-11  4.7998E-10 -2.0220E-11  1.1568E-10 -2.0310E-09  2.0160E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.097138 -160.700440    0.312447    0.018154   -0.953425  2459295.683221
# Heliocentric elements and errors
Epoch:              2459290.5000  =  2021/03/17
Mean Anomaly:           70.02016 +/-     0.887
Argument of Peri:      293.23784 +/-     0.647
Long of Asc Node:      187.77161 +/-     0.003
Inclination:             5.56451 +/-     0.001
Eccentricity:         0.07038358 +/-    0.0049
Semi-Major Axis:     35.22680179 +/-    0.1026
Time of Perihelion: 2444436.9994 +/-     176.7
Perihelion:          32.74741343 +/-    0.1963
Aphelion:            37.70619014 +/-    0.2037
Period (y)              209.0827 +/-      0.91
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.69270980 +/-    0.0157
Ecliptic Y          -11.12597637 +/-    0.0055
Ecliptic Z            0.64329286 +/-    0.0003
Ecliptic XDOT         0.00076138 +/-    0.0000
Ecliptic YDOT        -0.00284143 +/-    0.0000
Ecliptic ZDOT         0.00028432 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.54004126 +/-    0.0150
Geocenter to KBO     33.59022391 +/-    0.0166
# Hcoef:  8.19

The following table shows the complete astrometric record for 22FH9. 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 (22FH9) followed by the observatory code and reference code for the source of the astrometry.

2021 03  22.18242  13 12 55.17   -06 32 19.8         22FH9     W93  C~5Zfa      
2021 03  22.20353  13 12 55.01   -06 32 18.4   22.8R 22FH9     W93  C~5Zfa      
2021 03  22.22274  13 12 54.90   -06 32 17.2   23.3R 22FH9     W93  C~5Zfa      
2021 03  24.19721  13 12 44.91   -06 31 11.4   23.2R 22FH9     W93  C~5Zfa      
2021 03  24.23220  13 12 44.64   -06 31 10.2   23.1R 22FH9     W93  C~5Zfa      
2022 03  26.14496  13 19 40.32   -07 01 43.8         22FH9     W93  C~5Zfa      
2022 03  26.18023  13 19 40.16   -07 01 43.2         22FH9     W93  C~5Zfa      
2022 03  26.21168  13 19 39.95   -07 01 42.1   23.0R 22FH9     W93  C~5Zfa      
2022 03  28.14190  13 19 29.98   -07 00 36.5   23.7R 22FH9     W93  C~5Zfa      
2022 03  28.17563  13 19 29.84   -07 00 36.3   23.5R 22FH9     W93  C~5Zfa      
2022 03  28.21163  13 19 29.65   -07 00 35.2   23.5R 22FH9     W93  C~5Zfa      
2023 04  24.183950 13 24 10.053  -07 16 33.59  22.9G 22FH9     G37  C~6hd9      
2023 04  24.246640 13 24 09.696  -07 16 31.81        22FH9     G37  C~6hd9      

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     0.83       0.00    -0.54
     2   0.0001     -2.74    -0.14       0.40    -0.18
     3   0.0001     -4.71    -0.51       0.89     0.28
     4   0.0055   -167.41     0.54       5.54     0.31
     5   0.0056   -171.59    -0.67       5.13    -0.16
     6   1.0102   6256.86    -0.05     636.63     0.42
     7   1.0103   6254.42     0.49     636.30     0.02
     8   1.0103   6251.11    -0.16     636.15    -0.18
     9   1.0156   6088.77    -0.72     641.35     0.58
    10   1.0157   6086.76     0.16     640.75    -0.08
    11   1.0158   6083.72     0.20     640.71    -0.18
    12   2.0890  10319.93     0.11    1311.80     0.04
    13   2.0892  10314.33    -0.07    1311.47    -0.32

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.

22FH9    quality flag:2

Type:       SCATNEAR  SCATNEAR      5:4E

axisobj        35.225    35.641    34.829
ecceobj         0.073     0.087     0.060
incobj          5.572     5.575     5.570
qmin           31.757    31.727    32.133
qmax           42.038    41.849    37.969
amean          36.260    35.882    34.949
amin           35.005    34.876    34.667
amax           37.135    37.127    35.246
emean           0.087     0.066     0.059
emin            0.046     0.033     0.038
emax            0.134     0.128     0.079
imean           4.577     5.395     4.445
imin            3.005     4.055     3.203
imax            6.734     6.846     5.523
excite_mean     0.119     0.116     0.098
fracstop        1.000     1.000     1.000
cjmean          3.010     3.008     3.006

libcent 0      -180.0    -180.0     180.2
libamp  0      -180.0    -180.0      49.2
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       177.5     178.2     179.9
kozaiamp        180.0     180.0     180.0