Orbit Fit and Astrometric record for 15RL277

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: 15RL277   
# Created Fri Dec  3 02:13:28 2021
# Orbit generated from Bernstein formalism
# Fitting     17 observations of     17
# Arc:   1.26y
# First observation: 2015/06/23
#  Last observation: 2016/09/27
Preliminary a, adot, b, bdot, g, gdot:
   0.003451   0.416103   0.001511   0.006759   0.149044   0.000000
# Chi-squared of fit:     8.15 DOF:     28 RMS:  0.12
# Min/Max residuals:    -0.22    0.30
# Exact a, adot, b, bdot, g, gdot:
  4.550271E-05  4.506749E-01  8.442471E-07  9.052467E-03  1.577641E-01  2.871985E-01
# Covariance matrix:
  9.0846E-13 -1.1306E-11  1.5586E-13 -3.8097E-13 -2.6809E-12 -2.4394E-11
 -1.1306E-11  1.8069E-10 -2.6163E-12  6.1290E-12  4.5554E-11  3.9541E-10
  1.5586E-13 -2.6163E-12  1.8980E-13 -2.9539E-13 -6.7101E-13 -5.7418E-12
 -3.8097E-13  6.1290E-12 -2.9539E-13  7.9175E-13  1.5445E-12  1.3457E-11
 -2.6809E-12  4.5554E-11 -6.7101E-13  1.5445E-12  1.1741E-11  9.9964E-11
 -2.4394E-11  3.9541E-10 -5.7418E-12  1.3457E-11  9.9964E-11  8.6811E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.714255   10.661897    1.004218   -0.007310    0.156247  2457197.106478
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:            2.48737 +/-     0.001
Argument of Peri:       10.93426 +/-     0.003
Long of Asc Node:      299.48333 +/-     0.002
Inclination:             3.11432 +/-     0.000
Eccentricity:         0.84851766 +/-    0.0001
Semi-Major Axis:     34.28149627 +/-    0.0124
Time of Perihelion: 2456683.9467 +/-       0.0
Perihelion:           5.19304118 +/-    0.0028
Aphelion:            63.36995135 +/-    0.0231
Period (y)              200.7233 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            6.25076968 +/-    0.0001
Ecliptic Y            0.15571400 +/-    0.0000
Ecliptic Z            0.30022302 +/-    0.0000
Ecliptic XDOT         0.00343575 +/-    0.0000
Ecliptic YDOT         0.00859949 +/-    0.0000
Ecliptic ZDOT         0.00039301 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    6.25991232 +/-    0.0001
Geocenter to KBO      6.33857567 +/-    0.0001
# Hcoef: 16.21

The following table shows the complete astrometric record for 15RL277. 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 (15RL277) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.60570  00 34 54.953  +06 42 59.82  24.5r 15RL277   568  C~2jiA      
2015 07  19.53712  00 40 48.452  +07 35 39.17  24.9r 15RL277   568  C~2jiA      
2015 08  13.50040  00 40 41.089  +07 49 25.25  24.6r 15RL277   568  C~2jiA      
2015 08  19.56300  00 39 49.119  +07 47 09.10  25.2r 15RL277   568  C~2jiA      
2015 08  20.43842  00 39 40.214  +07 46 38.83  24.3r 15RL277   568  C~2jiA      
2015 08  20.48764  00 39 39.645  +07 46 36.99  24.6r 15RL277   568  C~2jiA      
2015 09  09.40442  00 34 49.043  +07 24 22.14  24.5r 15RL277   568  C~2jiA      
2015 09  09.44553  00 34 48.286  +07 24 18.35  24.6r 15RL277   568  C~2jiA      
2015 09  09.48644  00 34 47.507  +07 24 14.40  24.9r 15RL277   568  C~2jiA      
2015 09  10.51074  00 34 28.813  +07 22 35.69  24.9w 15RL277   568  C~2jiA      
2015 09  18.47260  00 31 55.406  +07 08 31.54  24.6w 15RL277   568  C~2jiA      
2015 11  10.41159  00 16 27.158  +05 25 18.79  23.7w 15RL277   568  C~2jiA      
2015 12  08.22307  00 15 26.656  +05 07 50.00  25.4w 15RL277   568  C~2jiA      
2016 01  01.29622  00 19 58.562  +05 26 55.91  25.8w 15RL277   568  C~2jiA      
2016 09  05.56240  02 00 40.432  +15 54 33.43  25.9w 15RL277   568  C~2jiA      
2016 09  06.55374  02 00 30.858  +15 54 03.33  25.5w 15RL277   568  C~2jiA      
2016 09  27.46659  01 55 45.224  +15 34 37.80  22.8w 15RL277   568  C~2jiA      

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     0.01
     2   0.0710   6080.47     0.18     843.26     0.00
     3   0.1393   6302.73    -0.15    1646.86    -0.09
     4   0.1559   5538.00     0.14    1823.44     0.09
     5   0.1583   5404.26     0.23    1847.35    -0.00
     6   0.1585   5395.75    -0.18    1848.96     0.07
     7   0.2130    896.30    -0.05    2316.66     0.06
     8   0.2131    884.45     0.12    2317.61     0.09
     9   0.2132    872.25    -0.10    2318.54     0.10
    10   0.2160    577.74    -0.14    2337.29     0.02
    11   0.2378  -1853.03     0.04    2462.03    -0.22
    12   0.3828 -17053.63    -0.02    2299.46    -0.09
    13   0.4589 -18311.39     0.03    1700.08    -0.12
    14   0.5248 -14105.16    -0.03    1119.16     0.03
    15   1.2045  87132.56    -0.12    3505.19     0.16
    16   1.2072  86967.18    -0.18    3522.36    -0.15
    17   1.2645  81971.53     0.30    3772.13     0.04

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.

15RL277    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        34.670    34.715    34.624
ecceobj         0.851     0.851     0.851
incobj          3.111     3.111     3.111
qmin            5.171     5.013     5.169
qmax           64.169    73.029    65.403
amean          34.670    29.442    34.992
amin           34.670    20.717    34.624
amax           34.670    39.189    35.360
emean           0.851     0.818     0.850
emin            0.851     0.757     0.850
emax            0.851     0.864     0.851
imean           4.667     5.256     4.673
imin            4.667     4.632     4.667
imax            4.667     5.878     4.678
excite_mean     0.855     0.823     0.854
fracstop        0.000     0.001     0.000
cjmean          1.992     2.178     1.991

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        11.0      34.4      11.7
kozaiamp          0.0      36.4       0.7