Orbit Fit and Astrometric record for 15RZ277

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: 15RZ277   
# Created Tue Apr 23 01:10:44 2019
# Orbit generated from Bernstein formalism
# Fitting   26 observations of   27
# Arc:   2.50y
# First observation: 2015/06/23
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000081   0.009739  -0.000002  -0.000981   0.014866   0.000000
# Chi-squared of fit:    14.24 DOF:   46 RMS:  0.13
# Min/Max residuals:    -0.40    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.152961E-05  9.643277E-03 -1.556689E-06 -9.825581E-04  1.481764E-02  4.910632E-03
# Covariance matrix:
  2.5170E-13  2.8728E-14  2.2372E-15 -1.8690E-14  2.4033E-13  8.7211E-12
  2.8728E-14  1.5987E-13  3.1138E-15 -1.9123E-14  1.7613E-13  8.8754E-12
  2.2372E-15  3.1138E-15  1.0770E-13 -6.8572E-14  6.6572E-15  6.8132E-13
 -1.8690E-14 -1.9123E-14 -6.8572E-14  9.4371E-14 -4.3210E-14 -3.3810E-12
  2.4033E-13  1.7613E-13  6.6572E-15 -4.3210E-14  4.3002E-13  2.0077E-11
  8.7211E-12  8.8754E-12  6.8132E-13 -3.3810E-12  2.0077E-11  1.5617E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.864607    6.529597    1.012823   -0.001179    0.084353  2457197.064548
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:           76.33596 +/-     0.579
Argument of Peri:       45.24745 +/-     0.232
Long of Asc Node:      194.16112 +/-     0.002
Inclination:             5.84197 +/-     0.002
Eccentricity:         0.44553599 +/-    0.0024
Semi-Major Axis:     61.96213853 +/-    0.1659
Time of Perihelion: 2419414.6110 +/-     242.9
Perihelion:          34.35577604 +/-    0.1737
Aphelion:            89.56850103 +/-    0.2815
Period (y)              487.7506 +/-      1.96
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           67.06960608 +/-    0.0030
Ecliptic Y            6.65829870 +/-    0.0003
Ecliptic Z            1.01831180 +/-    0.0000
Ecliptic XDOT         0.00069899 +/-    0.0000
Ecliptic YDOT         0.00186747 +/-    0.0000
Ecliptic ZDOT        -0.00016777 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   67.40698748 +/-    0.0030
Geocenter to KBO     67.48714991 +/-    0.0030
# Hcoef:  6.92

The following table shows the complete astrometric record for 15RZ277. 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 (15RZ277) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.56377  00 22 36.542  +03 23 11.81  25.5r 15RZ277   568  C~2lVO      
2015 07  14.58367  00 22 37.618  +03 23 23.54  25.5r 15RZ277   568  C~2lVO      
2015 07  19.56270  00 22 34.458  +03 23 04.18  25.0r 15RZ277   568  C~2lVO      
2015 08  11.47114  00 22 04.245  +03 19 52.20  24.7r 15RZ277   568  C~2lVO      
2015 09  08.38042  00 20 59.557  +03 12 50.45  24.8r 15RZ277   568  C~2lVO      
2015 09  08.48459  00 20 59.272  +03 12 48.79  24.8r 15RZ277   568  C~2lVO      
2015 09  08.52681  00 20 59.156  +03 12 48.05  25.1r 15RZ277   568  C~2lVO      
2015 09  09.50371  00 20 56.503  +03 12 30.58  25.4w 15RZ277   568  C~2lVO      
2015 09  10.44466  00 20 53.936  +03 12 13.66  25.0w 15RZ277   568  C~2lVO      
2015 09  16.42676  00 20 37.245  +03 10 23.15  25.4w 15RZ277   568  C~2lVO      
2015 10  03.34014  00 19 48.369  +03 04 58.03  23.8r 15RZ277   568  C~2lVO      
2015 10  07.32360  00 19 36.852  +03 03 41.07  25.1r 15RZ277   568  C~2lVO      
2015 10  07.37570  00 19 36.726  +03 03 39.87  24.6r 15RZ277   568  C~2lVO      
2015 11  07.21826  00 18 16.804  +02 54 33.05  25.6w 15RZ277   568  C~2lVO      
2015 11  07.27071  00 18 16.675  +02 54 32.43  25.5w 15RZ277   568  C~2lVO      
2015 11  08.31542  00 18 14.427  +02 54 17.06  24.5w 15RZ277   568  C~2lVO      
2015 12  07.29452  00 17 31.640  +02 49 01.65  25.6w 15RZ277   568  C~2lVO      
2016 01  01.22389  00 17 30.235  +02 48 16.48  25.3w 15RZ277   568  C~2lVO      
2016 09  05.55294  00 23 13.637  +03 23 34.34  25.2w 15RZ277   568  C~2lVO      
2016 09  07.49232  00 23 08.485  +03 23 00.48  25.1w 15RZ277   568  C~2lVO      
2016 09  26.57548  00 22 14.718  +03 17 04.95  25.7w 15RZ277   568  C~2lVO      
2016 12  24.23886  00 19 34.578  +02 58 13.12        15RZ277   568  C~2lVO      
2017 01  02.23941  00 19 38.722  +02 58 27.39  25.4w 15RZ277   568  C~2lVO      
2017 09  15.45412  00 24 54.816  +03 30 42.61  27.0w 15RZ277   568  C~2lVO      
2017 09  22.51940  00 24 34.823  +03 28 30.29  25.0w 15RZ277   568  C~2lVO      
2017 11  22.37572  00 22 03.926  +03 11 22.39  25.4w 15RZ277   568  C~2lVO      
2017 12  23.31586  00 21 40.902  +03 08 14.46  25.2w 15RZ277   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    -0.26       0.00     0.10
  2   0.0575     19.44    -0.03       4.39    -0.14
  3   0.0712    -31.68     0.20       5.35    -0.15
  4   0.1339   -523.13     0.18       8.20     0.12
  5   0.2103  -1579.72    -0.05       4.70    -0.08
  6   0.2106  -1584.30     0.05       4.87     0.08
  7   0.2107  -1586.19     0.06       4.88     0.09
  8   0.2134  -1629.59     0.03       4.58     0.08
  9   0.2160  -1671.60     0.06       4.28     0.08
 10   0.2323  -1944.92    -0.05       1.89    -0.25
 11   0.2786  -2745.98    -0.14      -6.38    -0.02
 12   0.2896  -2934.90    -0.12      -8.63     0.31
 13   0.2897  -2937.11     0.17      -8.98    -0.03
 14   0.3741  -4253.41     0.09     -36.00    -0.11
 15   0.3743  -4255.43    -0.03     -35.80     0.12
 16   0.3771  -4292.45 (  -0.04)    -36.55 (   0.47)
 17   0.4565  -5006.36    -0.05     -71.63    -0.01
 18   0.5247  -5043.63     0.03    -104.74    -0.14
 19   1.2046    519.01     0.06    -199.17    -0.03
 20   1.2099    434.76     0.07    -199.73    -0.04
 21   1.2622   -445.35    -0.40    -207.49     0.03
 22   1.5049  -3096.26    -0.15    -296.21    -0.04
 23   1.5296  -3033.60     0.17    -307.73    -0.11
 24   2.2310   2079.86    -0.08    -405.05     0.14
 25   2.2504   1752.57     0.12    -408.23    -0.01
 26   2.4170   -729.42    -0.05    -458.05    -0.17
 27   2.5017  -1120.49     0.12    -494.04     0.17

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.

15RZ277    quality flag:2

Type:          3:1EE     3:1EE  SCATNEAR

axisobj        62.558    63.055    62.080
ecceobj         0.442     0.449     0.435
incobj          5.800     5.800     5.800
qmin           33.922    33.728    34.091
qmax           93.531    93.705    91.284
amean          62.631    62.629    60.774
amin           61.530    61.599    58.722
amax           64.041    64.054    63.008
emean           0.448     0.451     0.425
emin            0.436     0.439     0.399
emax            0.461     0.463     0.449
imean           6.071     6.033     5.887
imin            5.913     5.909     5.035
imax            6.231     6.197     6.734
excite_mean     0.460     0.463     0.437
fracstop        1.000     1.000     1.000
cjmean          3.045     3.041     3.054

libcent 0       179.6     179.9    -180.0
libamp  0       161.7     155.3    -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       165.5     174.2     187.0
kozaiamp        179.9     179.9     180.0