Orbit Fit and Astrometric record for 15RY277

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: 15RY277   
# Created Fri Dec  3 02:13:28 2021
# Orbit generated from Bernstein formalism
# Fitting     36 observations of     36
# Arc:   2.25y
# First observation: 2015/06/23
#  Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000095   0.027883   0.000012   0.001062   0.026065   0.000000
# Chi-squared of fit:     8.87 DOF:     66 RMS:  0.09
# Min/Max residuals:    -0.34    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.602048E-05  2.738584E-02  9.104939E-07  1.053822E-03  2.569632E-02  6.697048E-03
# Covariance matrix:
  1.3786E-13  1.7830E-14 -5.1257E-15  3.8565E-15  1.1570E-13  1.3475E-12
  1.7830E-14  4.3595E-13 -1.6115E-14  2.8568E-14  2.9957E-13  9.3038E-12
 -5.1257E-15 -1.6115E-14  8.0946E-14 -6.4028E-14 -1.5725E-14 -4.1276E-13
  3.8565E-15  2.8568E-14 -6.4028E-14  9.9207E-14  2.1836E-14  8.4863E-13
  1.1570E-13  2.9957E-13 -1.5725E-14  2.1836E-14  3.1591E-13  7.2170E-12
  1.3475E-12  9.3038E-12 -4.1276E-13  8.4863E-13  7.2170E-12  2.7433E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.610789    9.877065    1.006075   -0.006470    0.143887  2457197.024748
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:           37.32357 +/-     0.025
Argument of Peri:      346.60465 +/-     0.061
Long of Asc Node:      319.25664 +/-     0.008
Inclination:             3.46267 +/-     0.000
Eccentricity:         0.27458841 +/-    0.0006
Semi-Major Axis:     47.24810615 +/-    0.0176
Time of Perihelion: 2444891.8993 +/-       4.4
Perihelion:          34.27432387 +/-    0.0315
Aphelion:            60.22188843 +/-    0.0365
Period (y)              324.7767 +/-      0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.32663276 +/-    0.0008
Ecliptic Y            5.65312386 +/-    0.0001
Ecliptic Z            1.77276625 +/-    0.0000
Ecliptic XDOT         0.00019422 +/-    0.0000
Ecliptic YDOT         0.00298977 +/-    0.0000
Ecliptic ZDOT         0.00014473 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.78184225 +/-    0.0008
Geocenter to KBO     38.91607994 +/-    0.0009
# Hcoef:  7.90

The following table shows the complete astrometric record for 15RY277. 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 (15RY277) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.52397  00 32 10.734  +06 18 45.61  23.9r 15RY277   568  C~2lVO      
2015 07  14.60825  00 32 24.894  +06 22 04.09  23.9r 15RY277   568  C~2lVO      
2015 07  19.58735  00 32 22.224  +06 22 12.15  24.0r 15RY277   568  C~2lVO      
2015 08  13.48399  00 31 36.414  +06 19 15.09  23.9r 15RY277   568  C~2lVO      
2015 08  13.53744  00 31 36.249  +06 19 14.41  23.6r 15RY277   568  C~2lVO      
2015 08  19.54662  00 31 17.832  +06 17 40.33  23.6r 15RY277   568  C~2lVO      
2015 08  19.58802  00 31 17.675  +06 17 40.19  24.0r 15RY277   568  C~2lVO      
2015 08  19.61668  00 31 17.579  +06 17 39.62  23.5r 15RY277   568  C~2lVO      
2015 08  20.42114  00 31 14.947  +06 17 25.49  24.1r 15RY277   568  C~2lVO      
2015 08  20.47055  00 31 14.776  +06 17 24.61  24.0r 15RY277   568  C~2lVO      
2015 09  07.56844  00 30 04.937  +06 10 56.01  23.7w 15RY277   568  C~2lVO      
2015 09  09.39585  00 29 57.012  +06 10 09.82  23.7r 15RY277   568  C~2lVO      
2015 09  09.43729  00 29 56.831  +06 10 08.76  23.7r 15RY277   568  C~2lVO      
2015 09  09.47825  00 29 56.646  +06 10 07.70  23.9r 15RY277   568  C~2lVO      
2015 09  10.50253  00 29 52.138  +06 09 41.20  24.0w 15RY277   568  C~2lVO      
2015 09  18.46210  00 29 15.928  +06 06 05.71  24.1w 15RY277   568  C~2lVO      
2015 10  08.34986  00 27 41.195  +05 56 16.55  23.9w 15RY277   568  C~2lVO      
2015 10  08.40249  00 27 40.935  +05 56 14.92  23.9w 15RY277   568  C~2lVO      
2015 10  09.31945  00 27 36.594  +05 55 47.03  23.8w 15RY277   568  C~2lVO      
2015 11  10.44543  00 25 21.479  +05 40 38.29  24.3w 15RY277   568  C~2lVO      
2015 11  10.47307  00 25 21.367  +05 40 37.74  23.9w 15RY277   568  C~2lVO      
2015 11  15.26831  00 25 05.979  +05 38 46.30  23.8w 15RY277   568  C~2lVO      
2015 12  08.24411  00 24 17.789  +05 32 20.66  24.1w 15RY277   568  C~2lVO      
2016 01  01.30664  00 24 20.188  +05 31 01.52  24.1w 15RY277   568  C~2lVO      
2016 09  06.44869  00 35 56.071  +06 52 16.44        15RY277   568  C~2lVO      
2016 09  06.48996  00 35 55.878  +06 52 15.42        15RY277   568  C~2lVO      
2016 09  26.44752  00 34 25.205  +06 43 16.55  24.1w 15RY277   568  C~2lVO      
2016 11  03.37410  00 31 33.686  +06 24 43.95        15RY277   568  C~2lVO      
2016 11  03.40304  00 31 33.565  +06 24 43.18        15RY277   568  C~2lVO      
2016 11  03.43201  00 31 33.458  +06 24 42.24        15RY277   568  C~2lVO      
2016 11  03.46810  00 31 33.311  +06 24 41.39        15RY277   568  C~2lVO      
2016 11  04.25899  00 31 30.295  +06 24 20.45        15RY277   568  C~2lVO      
2016 12  25.26033  00 29 56.767  +06 11 30.12  24.1w 15RY277   568  C~2lVO      
2017 01  02.30275  00 30 03.986  +06 11 43.57  23.9w 15RY277   568  C~2lVO      
2017 09  16.50931  00 40 59.575  +07 28 35.30  23.9w 15RY277   568  C~2lVO      
2017 09  22.46275  00 40 32.234  +07 25 53.27  23.9w 15RY277   568  C~2lVO      

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     0.17       0.00    -0.05
     2   0.0577    272.25    -0.06      99.19    -0.00
     3   0.0714    238.85    -0.00     122.28    -0.05
     4   0.1395   -458.57     0.08     228.89    -0.09
     5   0.1397   -461.10    -0.00     229.24     0.02
     6   0.1561   -750.53    -0.01     251.14    -0.34
     7   0.1562   -752.73    -0.02     251.94     0.28
     8   0.1563   -754.28    -0.05     251.98     0.21
     9   0.1585   -795.91     0.03     254.48    -0.03
    10   0.1586   -798.60    -0.01     254.68    -0.03
    11   0.2082  -1908.85    -0.05     308.96     0.08
    12   0.2132  -2035.68    -0.03     313.24     0.11
    13   0.2133  -2038.58     0.02     313.33     0.09
    14   0.2134  -2041.54    -0.01     313.45     0.09
    15   0.2162  -2113.77     0.02     315.68    -0.02
    16   0.2380  -2695.09    -0.04     331.29     0.03
    17   0.2925  -4226.47     0.01     349.71     0.01
    18   0.2926  -4230.68    -0.07     349.75     0.01
    19   0.2951  -4301.23     0.05     349.80    -0.02
    20   0.3831  -6514.16     0.03     315.49    -0.22
    21   0.3832  -6515.92    -0.16     315.65    -0.01
    22   0.3963  -6771.24     0.04     304.61    -0.00
    23   0.4592  -7585.64     0.05     236.58    -0.00
    24   0.5251  -7584.23     0.05     149.66    -0.01
    25   1.2072   3878.49     0.07     527.75     0.00
    26   1.2073   3875.45    -0.15     527.94     0.07
    27   1.2619   2421.45    -0.05     563.01    -0.04
    28   1.3658   -366.19     0.09     547.12     0.01
    29   1.3659   -368.16     0.00     547.13     0.05
    30   1.3659   -369.99     0.03     546.89    -0.15
    31   1.3660   -372.34     0.01     546.98    -0.01
    32   1.3682   -421.91     0.02     545.47     0.03
    33   1.5078  -2007.30     0.03     388.45    -0.18
    34   1.5299  -1903.09    -0.08     358.25     0.02
    35   2.2340   8892.90     0.04     765.78     0.04
    36   2.2503   8454.48    -0.02     775.21     0.09

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.

15RY277    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        47.806    47.860    47.751
ecceobj         0.281     0.283     0.279
incobj          3.456     3.456     3.456
qmin           33.662    33.508    33.737
qmax           63.161    63.129    63.143
amean          47.797    47.795    47.799
amin           47.043    47.105    46.978
amax           48.673    48.622    48.758
emean           0.282     0.284     0.280
emin            0.266     0.268     0.265
emax            0.298     0.300     0.296
imean           5.049     4.935     5.013
imin            4.781     4.739     4.583
imax            5.375     5.140     5.431
excite_mean     0.295     0.297     0.294
fracstop        1.000     1.000     1.000
cjmean          3.038     3.037     3.039

libcent 0       179.6     180.0     180.8
libamp  0       157.9     153.4     164.3
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       142.3     167.7     170.9
kozaiamp        180.0     180.0     180.0