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: 01VN71 # Created Sun Dec 22 02:08:19 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 24 observations of 24 # Arc: 18.27y # First observation: 2001/11/09 # Last observation: 2020/02/18 # Chi-squared of fit: 39.84 DOF: 42 RMS: 0.23 # Min/Max residuals: -0.59 0.47 # Exact a, adot, b, bdot, g, gdot: 2.092221E-05 4.196698E-02 5.469889E-06 1.381202E-02 3.453455E-02 -1.965330E-03 # Covariance matrix: 1.5404E-13 -4.5709E-14 1.6485E-14 -1.4928E-14 8.7404E-14 -5.1464E-14 -4.5709E-14 2.8243E-14 -1.1478E-14 1.0021E-14 -4.0414E-14 3.3869E-14 1.6485E-14 -1.1478E-14 9.7555E-14 -1.0635E-14 1.6329E-14 -1.4244E-14 -1.4928E-14 1.0021E-14 -1.0635E-14 4.8115E-15 -1.7701E-14 1.2731E-14 8.7404E-14 -4.0414E-14 1.6329E-14 -1.7701E-14 2.4640E-13 -6.6327E-14 -5.1464E-14 3.3869E-14 -1.4244E-14 1.2731E-14 -6.6327E-14 4.3585E-14 # lat0 lon0 xBary yBary zBary JD0 -4.322230 58.305989 0.193947 -0.072872 -0.963013 2452222.953023 # Heliocentric elements and errors Epoch: 2452222.5000 = 2001/11/09 Mean Anomaly: 351.59604 +/- 208.852 Argument of Peri: 1.31123 +/- 0.001 Long of Asc Node: 70.46941 +/- 0.000 Inclination: 18.62111 +/- 0.000 Eccentricity: 0.25321046 +/- 0.0001 Semi-Major Axis: 39.81456627 +/- 0.0455 Time of Perihelion: 2454364.6153 +/- 53235.2 Perihelion: 29.73310178 +/- 0.0344 Aphelion: 49.89603076 +/- 0.0573 Period (y) 251.2298 +/- 0.43 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 15.84388158 +/- 0.0003 Ecliptic Y 25.29379463 +/- 0.0005 Ecliptic Z -2.18217347 +/- 0.0000 Ecliptic XDOT -0.00287782 +/- 0.0000 Ecliptic YDOT 0.00168633 +/- 0.0000 Ecliptic ZDOT 0.00110384 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 29.92604707 +/- 0.0005 Geocenter to KBO 28.95657172 +/- 0.0006 # Hcoef: 8.82
The following table shows the complete astrometric record for 01VN71. 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 (01VN71) followed by the observatory code and reference code for the source of the astrometry.
2001 11 09.45228 03 48 13.18 +15 33 57.1 23.9R 01VN71 568 Ce1330 2001 11 09.48072 03 48 13.02 +15 33 56.7 23.9R 01VN71 568 Ce1330 2001 11 09.56655 03 48 12.42 +15 33 55.4 23.8R 01VN71 568 Ce1330 2001 11 10.38146 03 48 06.96 +15 33 43.0 01VN71 568 Ce1330 2001 11 15.26506 03 47 33.76 +15 32 29.5 23.0R 01VN71 309 Ce4815 2001 11 15.29727 03 47 33.54 +15 32 29.0 23.2R 01VN71 309 Ce4815 2002 03 20.25280 03 43 07.88 +15 46 56.9 01VN71 568 Cf5138 2002 03 22.23602 03 43 18.86 +15 48 01.6 23. R 01VN71 568 Cf5138 2002 03 22.24346 03 43 18.88 +15 48 01.9 23. R 01VN71 568 Cf5138 2002 11 11.20716 03 57 10.83 +16 50 44.1 01VN71 695 Cg5849 2002 11 11.26984 03 57 10.37 +16 50 43.5 23.1R 01VN71 695 Cg5849 2002 11 12.20494 03 57 04.06 +16 50 30.4 23.1R 01VN71 695 Cg5849 2002 11 12.31522 03 57 03.32 +16 50 28.9 23.0R 01VN71 695 Cg5849 2002 11 12.38129 03 57 02.86 +16 50 28.1 23.1R 01VN71 695 Cg5849 2005 12 23.30711 04 20 32.26 +20 27 49.1 01VN71 568 Cp7644 2005 12 23.36550 04 20 31.87 +20 27 48.8 01VN71 568 Cp7644 2006 10 23.489342 04 37 02.33 +21 45 16.2 01VN71 645 C~1S6m 2006 10 23.490171 04 37 02.33 +21 45 16.2 01VN71 645 C~1S6m 2006 10 23.492659 04 37 02.32 +21 45 16.1 01VN71 645 C~1S6m 2015 11 08.42308 06 09 45.04 +30 15 26.7 23.1R 01VN71 G37 C~1dc2 2015 11 08.48934 06 09 44.71 +30 15 28.3 01VN71 G37 C~1dc2 2020 02 18.156050 06 43 10.251 +32 56 24.86 23.2G 01VN71 G37 C~3iCg 2020 02 18.207260 06 43 10.011 +32 56 24.50 01VN71 G37 C~3iCg 2020 02 18.310870 06 43 09.542 +32 56 24.11 01VN71 G37 C~3iCg
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 -0.40 0.00 0.10
2 0.0001 0.00 0.12 0.00 0.13
3 0.0003 0.00 -0.10 0.00 0.16
4 0.0025 0.00 -0.14 0.00 0.18
5 0.0159 0.00 0.10 0.00 0.03
6 0.0160 0.00 0.16 0.00 0.02
7 0.3581 0.00 0.19 0.00 -0.08
8 0.3635 0.00 0.31 0.00 -0.32
9 0.3636 0.00 -0.01 0.00 -0.26
10 1.0041 0.00 -0.14 0.00 0.24
11 1.0043 0.00 -0.59 0.00 0.47
12 1.0069 0.00 -0.26 0.00 0.13
13 1.0072 0.00 0.05 0.00 0.11
14 1.0073 0.00 -0.01 0.00 0.21
15 4.1201 0.00 -0.03 0.00 -0.32
16 4.1202 0.00 -0.17 0.00 -0.26
17 4.9529 0.00 0.27 0.00 -0.30
18 4.9529 0.00 0.33 0.00 -0.30
19 4.9529 0.00 0.38 0.00 -0.39
20 13.9958 0.00 0.11 0.00 -0.04
21 13.9960 0.00 -0.02 0.00 0.32
22 18.2743 0.00 -0.07 0.00 0.11
23 18.2745 0.00 -0.11 0.00 -0.02
24 18.2748 0.00 0.03 0.00 0.11
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.
01VN71 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.849 39.849 39.849 ecceobj 0.253 0.253 0.253 incobj 18.623 18.623 18.623 qmin 26.651 26.597 26.709 qmax 52.864 52.850 52.766 amean 39.455 39.455 39.454 amin 39.068 39.057 39.047 amax 39.950 39.953 39.957 emean 0.250 0.250 0.250 emin 0.168 0.168 0.168 emax 0.324 0.324 0.322 imean 16.837 16.828 16.847 imin 13.001 13.013 13.013 imax 19.797 19.795 19.799 excite_mean 0.386 0.386 0.386 fracstop 1.000 1.000 1.000 cjmean 2.882 2.882 2.882 libcent 0 180.3 180.3 180.4 libamp 0 56.3 56.3 56.4 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 140.7 139.5 141.8 kozaiamp 180.0 180.0 180.0