Orbit Fit and Astrometric record for 15RZ280

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: 15RZ280   
# Created Mon Apr 22 01:10:10 2019
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   34
# Arc:   1.60y
# First observation: 2015/06/23
#  Last observation: 2017/01/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000101   0.024424  -0.000008  -0.004981   0.024692   0.000000
# Chi-squared of fit:    10.60 DOF:   60 RMS:  0.10
# Min/Max residuals:    -0.31    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.462304E-05  2.391769E-02 -2.814321E-06 -4.928463E-03  2.431422E-02  3.501049E-03
# Covariance matrix:
  2.2602E-13  9.6354E-14  5.8434E-15 -8.0852E-14  2.8253E-13  1.1735E-11
  9.6354E-14  4.4819E-13  1.4526E-14 -1.5251E-13  4.5697E-13  2.2034E-11
  5.8434E-15  1.4526E-14  1.0454E-13 -1.0477E-13  2.1203E-14  1.8093E-12
 -8.0852E-14 -1.5251E-13 -1.0477E-13  2.4104E-13 -2.2568E-13 -1.4195E-11
  2.8253E-13  4.5697E-13  2.1203E-14 -2.2568E-13  6.8250E-13  3.2613E-11
  1.1735E-11  2.2034E-11  1.8093E-12 -1.4195E-11  3.2613E-11  2.0375E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.966211   10.107553    1.005487   -0.007572    0.147884  2457197.024748
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:           54.48948 +/-     0.128
Argument of Peri:       97.29768 +/-     0.291
Long of Asc Node:      202.95192 +/-     0.001
Inclination:            11.92609 +/-     0.001
Eccentricity:         0.13336555 +/-    0.0018
Semi-Major Axis:     43.80280011 +/-    0.0223
Time of Perihelion: 2441163.1624 +/-      35.7
Perihelion:          37.96101539 +/-    0.0817
Aphelion:            49.64458483 +/-    0.0833
Period (y)              289.9085 +/-      0.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           40.46280232 +/-    0.0014
Ecliptic Y            6.19275482 +/-    0.0002
Ecliptic Z            2.12820685 +/-    0.0001
Ecliptic XDOT        -0.00005925 +/-    0.0000
Ecliptic YDOT         0.00271930 +/-    0.0000
Ecliptic ZDOT        -0.00053375 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.98924064 +/-    0.0014
Geocenter to KBO     41.12818799 +/-    0.0014
# Hcoef:  8.43

The following table shows the complete astrometric record for 15RZ280. 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 (15RZ280) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.52397  00 32 27.987  +06 43 48.25  25.0r 15RZ280   568  C~2nvs      
2015 07  19.58736  00 32 39.551  +06 45 47.06  25.0r 15RZ280   568  C~2nvs      
2015 08  13.48399  00 31 56.818  +06 41 43.53  20.7r 15RZ280   568  C~2nvs      
2015 08  19.54662  00 31 39.427  +06 39 55.00  24.0r 15RZ280   568  C~2nvs      
2015 08  19.58802  00 31 39.264  +06 39 54.07  24.7r 15RZ280   568  C~2nvs      
2015 08  19.61668  00 31 39.180  +06 39 53.50  24.9r 15RZ280   568  C~2nvs      
2015 08  20.42114  00 31 36.702  +06 39 37.71  24.8r 15RZ280   568  C~2nvs      
2015 08  20.47055  00 31 36.537  +06 39 36.77  24.5r 15RZ280   568  C~2nvs      
2015 09  07.56844  00 30 30.896  +06 32 29.80  24.7w 15RZ280   568  C~2nvs      
2015 09  09.39585  00 30 23.439  +06 31 39.95  24.7r 15RZ280   568  C~2nvs      
2015 09  09.43729  00 30 23.265  +06 31 38.77  24.8r 15RZ280   568  C~2nvs      
2015 09  09.47825  00 30 23.087  +06 31 37.64  24.6r 15RZ280   568  C~2nvs      
2015 09  10.50253  00 30 18.855  +06 31 09.18  24.7w 15RZ280   568  C~2nvs      
2015 09  18.46210  00 29 44.768  +06 27 17.99  25.4w 15RZ280   568  C~2nvs      
2015 10  08.34986  00 28 15.472  +06 16 49.97        15RZ280   568  C~2nvs      
2015 10  08.40249  00 28 15.246  +06 16 48.26  24.9w 15RZ280   568  C~2nvs      
2015 10  09.31945  00 28 11.145  +06 16 18.54        15RZ280   568  C~2nvs      
2015 11  10.44543  00 26 03.562  +05 59 56.93  25.3w 15RZ280   568  C~2nvs      
2015 11  10.47307  00 26 03.468  +05 59 56.21  24.9w 15RZ280   568  C~2nvs      
2015 11  15.26831  00 25 48.913  +05 57 51.91  24.8w 15RZ280   568  C~2nvs      
2015 12  08.24411  00 25 03.273  +05 50 15.53  24.9w 15RZ280   568  C~2nvs      
2016 01  01.30664  00 25 05.464  +05 47 24.73  24.9w 15RZ280   568  C~2nvs      
2016 09  05.49449  00 36 14.490  +06 50 14.32        15RZ280   568  C~2nvs      
2016 09  06.44869  00 36 10.736  +06 49 49.24        15RZ280   568  C~2nvs      
2016 09  06.48996  00 36 10.546  +06 49 48.19        15RZ280   568  C~2nvs      
2016 09  26.44752  00 34 45.001  +06 40 05.48  23.9w 15RZ280   568  C~2nvs      
2016 11  03.37410  00 32 02.893  +06 20 15.61        15RZ280   568  C~2nvs      
2016 11  03.40304  00 32 02.787  +06 20 14.77        15RZ280   568  C~2nvs      
2016 11  03.43201  00 32 02.668  +06 20 13.89        15RZ280   568  C~2nvs      
2016 11  03.46810  00 32 02.526  +06 20 13.03        15RZ280   568  C~2nvs      
2016 11  04.25899  00 31 59.690  +06 19 50.14        15RZ280   568  C~2nvs      
2016 12  25.25214  00 30 31.214  +06 04 44.48  24.5w 15RZ280   568  C~2nvs      
2017 01  02.29442  00 30 38.120  +06 04 30.15        15RZ280   568  C~2nvs      
2017 01  29.24980  00 31 43.904  +06 08 24.19  24.2w 15RZ280   568  C~2nvs      

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     0.19       0.00    -0.08
  2   0.0714    205.15     0.04      41.27    -0.07
  3   0.1395   -475.88    -0.14      68.54     0.15
  4   0.1561   -756.78 (   0.44)     71.07 (  -0.04)
  5   0.1562   -759.37    -0.05      71.17     0.03
  6   0.1563   -760.75     0.03      71.14    -0.02
  7   0.1585   -800.90     0.06      71.21    -0.06
  8   0.1586   -803.53    -0.02      71.31     0.01
  9   0.2082  -1870.78    -0.02      65.38     0.01
 10   0.2132  -1992.58    -0.01      63.51     0.04
 11   0.2133  -1995.43    -0.02      63.45     0.00
 12   0.2134  -1998.31    -0.10      63.47     0.04
 13   0.2162  -2067.50     0.10      62.25    -0.06
 14   0.2380  -2625.62     0.03      50.81    -0.11
 15   0.2925  -4097.06    -0.19       1.11     0.06
 16   0.2926  -4100.83     0.01       0.88    -0.03
 17   0.2951  -4168.77     0.03      -2.18     0.00
 18   0.3831  -6306.23    -0.03    -148.43    -0.02
 19   0.3832  -6307.81    -0.08    -148.53     0.03
 20   0.3963  -6556.70     0.07    -176.37     0.02
 21   0.4592  -7363.88     0.13    -324.63    -0.03
 22   0.5251  -7401.83     0.01    -494.46     0.07
 23   1.2046   3253.87    -0.10    -972.49     0.02
 24   1.2072   3192.58     0.15    -973.60    -0.07
 25   1.2073   3189.57    -0.14    -973.46     0.10
 26   1.2619   1788.59     0.13   -1008.59    -0.15
 27   1.3658   -900.83     0.02   -1150.64     0.06
 28   1.3659   -902.62     0.05   -1150.79     0.05
 29   1.3659   -904.59    -0.12   -1150.90     0.07
 30   1.3660   -906.88    -0.16   -1150.85     0.29
 31   1.3682   -954.76    -0.01   -1155.21    -0.00
 32   1.5078  -2524.69    -0.10   -1466.37    -0.09
 33   1.5298  -2435.71    -0.01   -1520.24    -0.31
 34   1.6036  -1441.76     0.28   -1692.66     0.05

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.

15RZ280    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.247    44.321    44.176
ecceobj         0.139     0.143     0.134
incobj         11.876    11.876    11.876
qmin           37.510    37.370    37.665
qmax           50.867    51.091    50.513
amean          44.008    44.084    43.941
amin           43.644    43.721    43.587
amax           44.399    44.479    44.345
emean           0.130     0.135     0.125
emin            0.117     0.120     0.110
emax            0.146     0.149     0.140
imean          12.776    12.798    12.810
imin           12.127    12.121    12.119
imax           13.403    13.437    13.432
excite_mean     0.257     0.259     0.255
fracstop        1.000     1.000     1.000
cjmean          3.022     3.021     3.022

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       178.6     178.3     178.8
kozaiamp        180.0     179.9     180.0