Orbit Fit and Astrometric record for 15RE279

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: 15RE279   
# Created Sat Nov 27 02:13:35 2021
# Orbit generated from Bernstein formalism
# Fitting     28 observations of     28
# Arc:   2.36y
# First observation: 2015/07/14
#  Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000005   0.019964  -0.000020   0.004874   0.021901   0.000000
# Chi-squared of fit:     7.24 DOF:     50 RMS:  0.09
# Min/Max residuals:    -0.26    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.493880E-05  1.950647E-02  3.812702E-06  4.748210E-03  2.152507E-02 -8.013956E-03
# Covariance matrix:
  2.3065E-13  8.8484E-14 -1.7277E-14  5.1564E-14  2.4947E-13  4.9236E-12
  8.8484E-14  4.1867E-13 -3.8225E-14  1.2735E-13  4.3114E-13  1.2218E-11
 -1.7277E-14 -3.8225E-14  1.2222E-13 -9.4345E-14 -4.8075E-14 -1.5348E-12
  5.1564E-14  1.2735E-13 -9.4345E-14  1.4801E-13  1.5386E-13  5.3960E-12
  2.4947E-13  4.3114E-13 -4.8075E-14  1.5386E-13  5.9966E-13  1.4737E-11
  4.9236E-12  1.2218E-11 -1.5348E-12  5.3960E-12  1.4737E-11  5.1878E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.551922   10.036625    0.996091    0.009364   -0.207722  2457218.109039
# Heliocentric elements and errors
Epoch:              2457210.5000  =  2015/07/07
Mean Anomaly:          318.17936 +/-     0.087
Argument of Peri:       99.59941 +/-     0.008
Long of Asc Node:      358.64917 +/-     0.001
Inclination:            14.11230 +/-     0.001
Eccentricity:         0.42850108 +/-    0.0012
Semi-Major Axis:     57.54332481 +/-    0.0716
Time of Perihelion: 2475732.1241 +/-      17.2
Perihelion:          32.88594796 +/-    0.0787
Aphelion:            82.20070166 +/-    0.1225
Period (y)              436.5165 +/-      0.82
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           46.07588925 +/-    0.0016
Ecliptic Y            7.14425648 +/-    0.0003
Ecliptic Z            2.06872928 +/-    0.0001
Ecliptic XDOT        -0.00146389 +/-    0.0000
Ecliptic YDOT         0.00225469 +/-    0.0000
Ecliptic ZDOT         0.00055802 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.67234311 +/-    0.0016
Geocenter to KBO     46.45745806 +/-    0.0017
# Hcoef:  8.26

The following table shows the complete astrometric record for 15RE279. 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 (15RE279) followed by the observatory code and reference code for the source of the astrometry.

2015 07  14.60825  00 32 51.710  +06 19 17.04  24.5r 15RE279   568  C~2lVT      
2015 07  19.58735  00 32 48.656  +06 19 29.76  24.7r 15RE279   568  C~2lVT      
2015 08  13.53744  00 32 06.253  +06 17 32.82  25.1r 15RE279   568  C~2lVT      
2015 08  20.47055  00 31 47.248  +06 16 10.09  25.3r 15RE279   568  C~2lVT      
2015 09  07.56844  00 30 46.110  +06 11 10.29  24.9w 15RE279   568  C~2lVT      
2015 09  09.39585  00 30 39.209  +06 10 34.26  25.3r 15RE279   568  C~2lVT      
2015 09  09.43729  00 30 39.058  +06 10 33.39  25.1r 15RE279   568  C~2lVT      
2015 09  09.47825  00 30 38.887  +06 10 32.59  24.8r 15RE279   568  C~2lVT      
2015 09  10.50253  00 30 34.963  +06 10 11.98  25.2w 15RE279   568  C~2lVT      
2015 09  18.46210  00 30 03.472  +06 07 22.95  25.2w 15RE279   568  C~2lVT      
2015 10  08.34986  00 28 41.072  +05 59 39.03  25.1w 15RE279   568  C~2lVT      
2015 10  08.40249  00 28 40.854  +05 59 37.89  25.5w 15RE279   568  C~2lVT      
2015 10  09.31945  00 28 37.069  +05 59 15.76  25.2w 15RE279   568  C~2lVT      
2016 01  01.30664  00 25 35.595  +05 40 08.79  25.1w 15RE279   568  C~2lVT      
2016 09  05.49449  00 34 37.201  +06 53 55.93  25.6w 15RE279   568  C~2lVT      
2016 09  06.44869  00 34 33.661  +06 53 37.95  25.4w 15RE279   568  C~2lVT      
2016 09  06.48996  00 34 33.495  +06 53 37.29  25.1w 15RE279   568  C~2lVT      
2016 09  27.50093  00 33 08.986  +06 46 05.13  24.8w 15RE279   568  C~2lVT      
2016 11  03.37410  00 30 42.034  +06 31 39.30  25.2w 15RE279   568  C~2lVT      
2016 11  03.43201  00 30 41.826  +06 31 38.00  25.1w 15RE279   568  C~2lVT      
2016 12  25.22839  00 29 11.156  +06 21 24.81  24.9w 15RE279   568  C~2lVT      
2016 12  25.26033  00 29 11.163  +06 21 24.73  24.8w 15RE279   568  C~2lVT      
2017 01  02.27514  00 29 15.918  +06 21 44.17  25.0w 15RE279   568  C~2lVT      
2017 01  02.30275  00 29 15.936  +06 21 44.18  24.8w 15RE279   568  C~2lVT      
2017 01  29.23654  00 30 10.200  +06 27 00.50        15RE279   568  C~2lVT      
2017 09  16.48602  00 37 46.190  +07 33 19.71  24.7w 15RE279   568  C~2lVT      
2017 09  22.43395  00 37 21.727  +07 31 09.40  25.4w 15RE279   568  C~2lVT      
2017 11  22.34963  00 33 33.918  +07 08 30.96  24.8w 15RE279   568  C~2lVT      

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    -0.13       0.00    -0.07
     2   0.0136    -36.83    -0.05      29.63    -0.01
     3   0.0819   -663.93     0.05     171.42     0.31
     4   0.1009   -956.95     0.12     207.18    -0.00
     5   0.1505  -1912.96    -0.03     291.64     0.01
     6   0.1555  -2021.75     0.00     299.20     0.01
     7   0.1556  -2024.16     0.12     299.29    -0.09
     8   0.1557  -2026.82    -0.03     299.56    -0.00
     9   0.1585  -2088.73     0.04     303.75    -0.02
    10   0.1803  -2587.01    -0.10     334.09    -0.26
    11   0.2347  -3899.70    -0.10     394.26     0.03
    12   0.2349  -3903.14     0.00     394.50     0.12
    13   0.2374  -3963.77     0.04     396.53     0.01
    14   0.4673  -6906.71     0.02     417.47     0.02
    15   1.1468   2263.46    -0.01    1292.27    -0.05
    16   1.1495   2207.91     0.11    1296.47    -0.11
    17   1.1496   2205.38     0.04    1296.83     0.05
    18   1.2071    870.26    -0.05    1376.59    -0.00
    19   1.3081  -1483.28    -0.04    1444.76     0.10
    20   1.3082  -1486.64    -0.13    1444.79     0.08
    21   1.4500  -2970.64     0.12    1415.97    -0.02
    22   1.4501  -2970.57     0.10    1415.85    -0.10
    23   1.4721  -2897.76    -0.01    1405.65    -0.03
    24   1.4721  -2897.51    -0.14    1405.55    -0.10
    25   1.5459  -2029.34     0.14    1376.15    -0.03
    26   2.1763   5779.52     0.09    2363.14     0.08
    27   2.1925   5393.47    -0.09    2385.73     0.04
    28   2.3593   1741.66    -0.08    2467.57     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.

15RE279    quality flag:2

Type:       SCATNEAR  8:3EEEEE  SCATNEAR

axisobj        58.271    58.470    58.074
ecceobj         0.430     0.433     0.427
incobj         14.033    14.033    14.033
qmin           31.940    32.402    32.242
qmax           87.228    85.198    84.177
amean          57.722    57.901    57.098
amin           54.703    56.983    55.235
amax           60.128    59.084    58.467
emean           0.422     0.428     0.416
emin            0.381     0.413     0.386
emax            0.455     0.442     0.440
imean          14.886    14.699    14.885
imin           12.797    14.175    13.376
imax           16.636    15.584    16.307
excite_mean     0.495     0.498     0.489
fracstop        1.000     1.000     1.000
cjmean          2.946     2.944     2.947

libcent 0      -180.0     182.5    -180.0
libamp  0      -180.0     160.8    -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       193.3     206.4     176.6
kozaiamp        179.9     179.9     180.0