Orbit Fit and Astrometric record for 15RZ278

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: 15RZ278   
# Created Fri Mar 29 01:18:12 2024
# Orbit generated from Bernstein formalism
# Fitting     29 observations of     29
# Arc:   2.25y
# First observation: 2015/06/23
#  Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000092   0.039053   0.000017   0.008506   0.030011   0.000000
# Chi-squared of fit:     3.03 DOF:     52 RMS:  0.06
# Min/Max residuals:    -0.16    0.13
# Exact a, adot, b, bdot, g, gdot:
  2.033888E-05  3.805781E-02  4.698624E-06  8.344619E-03  2.937258E-02  4.501740E-03
# Covariance matrix:
  2.0017E-13 -3.1222E-14 -2.8790E-15  1.2166E-14  1.3159E-13  8.5173E-13
 -3.1222E-14  6.5563E-13 -4.1248E-14  1.7093E-13  3.4540E-13  1.1233E-11
 -2.8790E-15 -4.1248E-14  1.2203E-13 -1.1228E-13 -2.4558E-14 -9.1461E-13
  1.2166E-14  1.7093E-13 -1.1228E-13  1.9523E-13  1.0204E-13  3.7880E-12
  1.3159E-13  3.4540E-13 -2.4558E-14  1.0204E-13  3.3385E-13  6.7683E-12
  8.5173E-13  1.1233E-11 -9.1461E-13  3.7880E-12  6.7683E-12  2.4850E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.160963   10.369365    1.004983    0.000522    0.151427  2457197.098238
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:            3.67443 +/-     0.016
Argument of Peri:      345.12976 +/-     0.063
Long of Asc Node:        9.40951 +/-     0.000
Inclination:            12.34710 +/-     0.001
Eccentricity:         0.53138257 +/-    0.0002
Semi-Major Axis:     71.59389666 +/-    0.0212
Time of Perihelion: 2454932.1029 +/-       9.7
Perihelion:          33.55014769 +/-    0.0165
Aphelion:           109.63764564 +/-    0.0351
Period (y)              605.7901 +/-      0.27
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.51758909 +/-    0.0007
Ecliptic Y            5.11261162 +/-    0.0001
Ecliptic Z           -0.09542941 +/-    0.0000
Ecliptic XDOT        -0.00022607 +/-    0.0000
Ecliptic YDOT         0.00355916 +/-    0.0000
Ecliptic ZDOT         0.00077669 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.90540787 +/-    0.0007
Geocenter to KBO     34.04535486 +/-    0.0007
# Hcoef:  8.83

The following table shows the complete astrometric record for 15RZ278. 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 (15RZ278) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.59746  00 38 22.411  +03 57 27.60  24.3r 15RZ278   568  C~2lVS      
2015 07  14.54187  00 38 45.094  +04 01 34.10  24.3r 15RZ278   568  C~2lVS      
2015 08  11.49525  00 38 04.460  +03 59 34.75  24.3r 15RZ278   568  C~2lVS      
2015 08  11.53687  00 38 04.341  +03 59 34.28  24.2r 15RZ278   568  C~2lVS      
2015 09  08.40090  00 36 16.276  +03 50 27.90  24.1r 15RZ278   568  C~2lVS      
2015 09  08.50503  00 36 15.778  +03 50 25.14  23.9r 15RZ278   568  C~2lVS      
2015 09  08.54864  00 36 15.569  +03 50 24.10  24.5r 15RZ278   568  C~2lVS      
2015 09  09.52420  00 36 10.887  +03 49 59.39  24.2w 15RZ278   568  C~2lVS      
2015 09  10.46510  00 36 06.343  +03 49 35.19  24.3w 15RZ278   568  C~2lVS      
2015 10  03.37986  00 34 07.091  +03 38 52.93  24.4w 15RZ278   568  C~2lVS      
2015 10  07.34557  00 33 45.825  +03 36 57.59  24.1r 15RZ278   568  C~2lVS      
2015 10  07.36748  00 33 45.693  +03 36 56.94  24.3r 15RZ278   568  C~2lVS      
2015 10  07.40358  00 33 45.494  +03 36 55.94  23.8r 15RZ278   568  C~2lVS      
2015 11  07.24449  00 31 15.011  +03 23 33.52  24.5w 15RZ278   568  C~2lVS      
2015 11  07.29726  00 31 14.790  +03 23 32.45  24.3w 15RZ278   568  C~2lVS      
2015 12  07.32092  00 29 50.160  +03 17 03.93  24.4w 15RZ278   568  C~2lVS      
2016 01  01.24995  00 29 50.610  +03 19 11.86  24.2w 15RZ278   568  C~2lVS      
2016 09  05.53675  00 43 55.545  +05 10 58.64  24.2w 15RZ278   568  C~2lVS      
2016 09  05.54080  00 43 55.521  +05 10 58.50  24.2w 15RZ278   568  C~2lVS      
2016 09  07.47613  00 43 46.621  +05 10 12.88  24.2w 15RZ278   568  C~2lVS      
2016 09  07.48017  00 43 46.598  +05 10 12.86  24.2w 15RZ278   568  C~2lVS      
2016 09  07.52244  00 43 46.404  +05 10 11.84  24.7w 15RZ278   568  C~2lVS      
2016 09  07.52648  00 43 46.379  +05 10 11.63  24.2w 15RZ278   568  C~2lVS      
2016 09  26.55282  00 42 10.429  +05 01 47.49  24.3w 15RZ278   568  C~2lVS      
2016 11  04.26545  00 38 52.960  +04 44 06.00  24.2w 15RZ278   568  C~2lVS      
2016 11  04.32471  00 38 52.697  +04 44 04.64  24.4w 15RZ278   568  C~2lVS      
2016 12  29.26158  00 37 05.517  +04 36 35.00  24.5w 15RZ278   568  C~2lVS      
2017 01  03.23211  00 37 11.576  +04 37 33.16  24.5w 15RZ278   568  C~2lVS      
2017 09  22.46739  00 50 01.805  +06 22 43.34  24.1w 15RZ278   568  C~2lVS      

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     0.03       0.00    -0.04
     2   0.0573    408.90    -0.16      93.65    -0.07
     3   0.1339   -197.21     0.07     222.33     0.03
     4   0.1340   -199.04     0.12     222.59     0.07
     5   0.2103  -1900.95    -0.10     354.90     0.07
     6   0.2106  -1908.89    -0.03     355.29    -0.10
     7   0.2107  -1912.18     0.04     355.56    -0.07
     8   0.2134  -1986.33    -0.01     360.36     0.05
     9   0.2159  -2058.38     0.04     364.82     0.01
    10   0.2787  -3952.55     0.00     475.97     0.03
    11   0.2895  -4290.75     0.13     495.18    -0.07
    12   0.2896  -4292.82    -0.05     495.36    -0.01
    13   0.2897  -4295.95    -0.06     495.61     0.04
    14   0.3741  -6684.66     0.01     645.28     0.00
    15   0.3743  -6688.12     0.03     645.60     0.04
    16   0.4565  -8007.65     0.01     788.30    -0.02
    17   0.5247  -7950.92    -0.09     903.29     0.04
    18   1.2045   6312.24     0.01    2110.51     0.04
    19   1.2045   6311.85    -0.07    2110.52     0.03
    20   1.2098   6171.50    -0.00    2120.42    -0.03
    21   1.2098   6171.18    -0.02    2120.54     0.06
    22   1.2099   6168.11     0.07    2120.73     0.01
    23   1.2099   6167.68    -0.05    2120.68    -0.06
    24   1.2620   4649.99    -0.03    2216.63    -0.02
    25   1.3680   1517.78     0.05    2395.24    -0.00
    26   1.3682   1513.63     0.09    2395.53    -0.00
    27   1.5186   -136.81     0.03    2610.60     0.03
    28   1.5322    -30.65    -0.09    2628.53    -0.06
    29   2.2502  13039.40     0.01    3952.95    -0.01

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.

15RZ278    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        73.111    73.213    73.008
ecceobj         0.541     0.542     0.540
incobj         12.305    12.305    12.305
qmin           32.407    31.972    32.138
qmax          119.766   118.279   119.862
amean          72.889    70.976    72.406
amin           69.120    66.879    68.182
amax           76.493    75.638    76.457
emean           0.541     0.533     0.541
emin            0.508     0.500     0.507
emax            0.566     0.564     0.571
imean          12.005    11.357    11.575
imin           10.706     9.975    10.140
imax           13.581    12.844    12.854
excite_mean     0.580     0.569     0.577
fracstop        1.000     1.000     1.000
cjmean          2.971     2.970     2.970

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       170.5     167.9     164.6
kozaiamp        180.0     179.9     180.0