Orbit Fit and Astrometric record for 15VR207

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: 15VR207   
# Created Sat Nov 27 02:13:52 2021
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   4.11y
# First observation: 2014/10/21
#  Last observation: 2018/11/29
Preliminary a, adot, b, bdot, g, gdot:
   0.000446   0.027281  -0.000296  -0.013298   0.025396   0.000000
# Chi-squared of fit:     8.92 DOF:     20 RMS:  0.15
# Min/Max residuals:    -0.33    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.784727E-05  2.814660E-02 -8.988595E-06 -1.373551E-02  2.609335E-02  6.997794E-03
# Covariance matrix:
  8.6172E-13 -8.0487E-13 -2.4499E-13  3.4478E-13 -2.2628E-13 -5.6129E-12
 -8.0487E-13  1.3335E-12  4.6326E-13 -6.5686E-13  1.0235E-12  1.0637E-11
 -2.4499E-13  4.6326E-13  5.7906E-13 -3.6919E-13  3.7135E-13  3.8633E-12
  3.4478E-13 -6.5686E-13 -3.6919E-13  3.9635E-13 -5.3520E-13 -5.4782E-12
 -2.2628E-13  1.0235E-12  3.7135E-13 -5.3520E-13  1.8696E-12  8.5688E-12
 -5.6129E-12  1.0637E-11  3.8633E-12 -5.4782E-12  8.5688E-12  8.8711E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.919446   28.262441    0.014128   -0.102664   -0.991899  2456951.770138
# Heliocentric elements and errors
Epoch:              2456950.5000  =  2014/10/20
Mean Anomaly:            9.59837 +/-     0.010
Argument of Peri:      156.92072 +/-     0.038
Long of Asc Node:      196.63140 +/-     0.000
Inclination:            26.65373 +/-     0.000
Eccentricity:         0.53688223 +/-    0.0003
Semi-Major Axis:     79.21756783 +/-    0.0379
Time of Perihelion: 2450084.1510 +/-       5.5
Perihelion:          36.68706298 +/-    0.0275
Aphelion:           121.74807269 +/-    0.0619
Period (y)              705.0833 +/-      0.51
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.45739331 +/-    0.0018
Ecliptic Y           18.51158376 +/-    0.0010
Ecliptic Z           -3.95274331 +/-    0.0002
Ecliptic XDOT        -0.00089053 +/-    0.0000
Ecliptic YDOT         0.00287188 +/-    0.0000
Ecliptic ZDOT        -0.00150913 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.31430868 +/-    0.0016
Geocenter to KBO     38.32393991 +/-    0.0020
# Hcoef:  7.72

The following table shows the complete astrometric record for 15VR207. 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 (15VR207) followed by the observatory code and reference code for the source of the astrometry.

2014 10  21.26936  01 53 29.236  +05 19 13.93  23.9r 15VR207   W84  C~55XF      
2015 11  06.17272  01 59 24.052  +05 00 30.82  23.2i 15VR207   W84  C~55XF      
2015 11  06.17409  01 59 24.047  +05 00 30.92  23.8r 15VR207   W84  C~55XF      
2015 11  18.17421  01 58 31.662  +04 54 52.11  23.6r 15VR207   W84  C~55XF      
2015 11  18.17559  01 58 31.676  +04 54 51.76  22.6i 15VR207   W84  C~55XF      
2015 11  18.17833  01 58 31.664  +04 54 51.85  24.7g 15VR207   W84  C~55XF      
2016 11  25.15966  02 05 00.272  +04 41 33.29  24.3r 15VR207   W84  C~55XF      
2017 10  22.22735  02 14 25.068  +04 47 13.97  24.1r 15VR207   W84  C~55XF      
2017 10  29.24143  02 13 52.676  +04 43 28.44  23.1z 15VR207   W84  C~55XF      
2018 09  09.29688  02 23 52.691  +05 00 21.15  23.2z 15VR207   W84  C~55XF      
2018 11  16.14261  02 19 20.094  +04 24 31.18  23.1i 15VR207   W84  C~55XF      
2018 11  29.17340  02 18 26.259  +04 19 38.67  23.3r 15VR207   W84  C~55XF      
2018 11  29.17477  02 18 26.237  +04 19 38.83  24.7g 15VR207   W84  C~55XF      

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    -0.16       0.00     0.14
     2   1.0429   4570.92     0.11   -2911.74    -0.01
     3   1.0429   4570.88     0.18   -2911.62     0.11
     4   1.0757   3718.56    -0.08   -2955.03     0.08
     5   1.0757   3718.63     0.09   -2955.43    -0.32
     6   1.0757   3718.50     0.14   -2955.28    -0.17
     7   2.0969   8890.74    -0.33   -5734.63     0.15
     8   3.0033  16970.13     0.05   -8353.81    -0.12
     9   3.0225  16434.02    -0.08   -8398.10     0.20
    10   3.8851  25311.33    -0.00  -10555.43    -0.06
    11   4.0708  20685.38    -0.01  -11175.25    -0.14
    12   4.1065  19819.20     0.13  -11171.46    -0.06
    13   4.1065  19818.94    -0.04  -11171.19     0.20

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.

15VR207    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        80.735    80.860    80.610
ecceobj         0.546     0.547     0.545
incobj         26.568    26.568    26.568
qmin           34.834    34.702    34.865
qmax          127.137   127.409   126.206
amean          79.641    79.743    79.258
amin           78.479    78.525    78.094
amax           81.366    81.488    80.920
emean           0.543     0.545     0.541
emin            0.527     0.528     0.525
emax            0.563     0.565     0.560
imean          26.387    26.201    26.340
imin           25.332    25.125    25.313
imax           27.351    27.338    27.305
excite_mean     0.701     0.702     0.700
fracstop        1.000     1.000     1.000
cjmean          2.825     2.825     2.825

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       208.0     197.1     208.6
kozaiamp        180.0     180.0     180.0