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: 03QY90 # Created Sun Dec 22 02:08:30 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 47 observations of 48 # Arc: 21.10y # First observation: 2000/08/27 # Last observation: 2021/10/03 # Chi-squared of fit: 122.49 DOF: 88 RMS: 0.29 # Min/Max residuals: -1.17 1.05 # Exact a, adot, b, bdot, g, gdot: 1.128748E-05 2.072080E-02 -1.170029E-06 -1.098377E-03 2.273165E-02 -2.686534E-05 # Covariance matrix: 3.1842E-13 -7.5693E-14 -1.2045E-14 3.5865E-15 -3.5806E-14 -1.3373E-13 -7.5693E-14 2.0777E-14 3.6013E-15 -1.0430E-15 5.3545E-15 3.8938E-14 -1.2045E-14 3.6013E-15 7.8878E-14 -8.2906E-15 -8.1876E-16 7.4302E-15 3.5865E-15 -1.0430E-15 -8.2906E-15 1.4292E-15 -1.1767E-16 -2.1120E-15 -3.5806E-14 5.3545E-15 -8.1876E-16 -1.1767E-16 6.3392E-14 3.8021E-15 -1.3373E-13 3.8938E-14 7.4302E-15 -2.1120E-15 3.8021E-15 7.8918E-14 # lat0 lon0 xBary yBary zBary JD0 -2.300732 -39.489679 -0.229764 -0.039540 -0.979890 2451783.533043 # Heliocentric elements and errors Epoch: 2451784.5000 = 2000/08/28 Mean Anomaly: 179.62459 +/- 0.018 Argument of Peri: 36.99407 +/- 0.014 Long of Asc Node: 104.22054 +/- 0.001 Inclination: 3.77182 +/- 0.000 Eccentricity: 0.05112086 +/- 0.0000 Semi-Major Axis: 42.78641803 +/- 0.0017 Time of Perihelion: 2400778.5778 +/- 5.9 Perihelion: 40.59913935 +/- 0.0021 Aphelion: 44.97369671 +/- 0.0023 Period (y) 279.8769 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.83150157 +/- 0.0004 Ecliptic Y -28.39501670 +/- 0.0003 Ecliptic Z -1.76607712 +/- 0.0000 Ecliptic XDOT 0.00157320 +/- 0.0000 Ecliptic YDOT 0.00193674 +/- 0.0000 Ecliptic ZDOT -0.00013190 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.97365323 +/- 0.0004 Geocenter to KBO 43.99157150 +/- 0.0005 # Hcoef: 6.50
The following table shows the complete astrometric record for 03QY90. 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 (03QY90) followed by the observatory code and reference code for the source of the astrometry.
2000 08 27.03230 21 34 41.26 -16 50 00.3 22.5R 03QY90 807 Cl0321 2000 08 27.10006 21 34 40.94 -16 50 01.8 03QY90 807 Cl0321 2003 08 24.09097 21 49 12.48 -15 49 08.7 21.3R 03QY90 807 Ci4137 2003 08 24.18809 21 49 12.05 -15 49 11.0 03QY90 807 Ci4137 2003 08 25.11656 21 49 07.95 -15 49 31.8 03QY90 807 Ci4137 2003 08 25.19767 21 49 07.59 -15 49 34.4 03QY90 807 Ci4137 2003 09 28.18091 21 46 54.25 -16 00 25.7 21.4R 03QY90 688 Ci6257 2003 09 28.30699 21 46 53.81 -16 00 26.2 03QY90 688 Ci6257 2003 10 23.01159 21 45 56.58 -16 04 19.6 22.2R 03QY90 304 Ci9429 2003 10 23.03841 21 45 56.54 -16 04 19.7 03QY90 304 Ci9429 2003 10 23.08963 21 45 56.47 -16 04 19.8 03QY90 304 Ci9429 2003 10 24.02579 21 45 55.23 -16 04 23.6 22.6R 03QY90 304 Ci9429 2003 10 24.05242 21 45 55.16 -16 04 23.6 03QY90 304 Ci9429 2004 05 28.24796 21 58 09.48 -15 02 28.1 23.2R 03QY90 304 Ck9589 2004 05 28.33567 21 58 09.39 -15 02 28.4 03QY90 304 Ck9589 2004 05 28.37691 21 58 09.46 -15 02 27.7 03QY90 304 Ck9589 2004 05 29.27426 21 58 09.31 -15 02 33.4 23.0R 03QY90 304 Ck9589 2004 05 29.39376 21 58 09.29 -15 02 33.6 03QY90 304 Ck9589 2004 09 13.04527 21 52 27.99 -15 35 57.1 23.0R 03QY90 304 Cl4360 2004 09 13.27082 21 52 27.09 -15 36 01.6 03QY90 304 Cl4360 2005 04 15.38258 22 01 25.95 -14 45 41.8 22.9R 03QY90 304 Cn3315 2005 04 15.38542 22 01 25.95 -14 45 42.2 03QY90 304 Cn3315 2005 04 15.38743 22 01 25.97 -14 45 42.1 03QY90 304 Cn3315 2005 04 15.39096 22 01 26.00 -14 45 42.4 03QY90 304 Cn3315 2005 04 15.39473 22 01 26.00 -14 45 42.2 03QY90 304 Cn3315 2005 06 08.37634 22 02 40.82 -14 42 41.9 22.8R 03QY90 304 Cn6523 2005 06 08.41012 22 02 40.78 -14 42 42.1 03QY90 304 Cn6523 2005 07 09.20600 22 01 38.15 -14 50 10.0 23.2R 03QY90 304 Cn8883 2005 07 09.20977 22 01 38.15 -14 50 10.1 03QY90 304 Cn8883 2005 07 11.20104 22 01 31.90 -14 50 49.5 03QY90 304 Cn8883 2005 07 11.32034 22 01 31.51 -14 50 52.0 03QY90 304 Cn8883 2005 07 11.38300 22 01 31.27 -14 50 53.6 23.5R 03QY90 304 Cn8883 2005 07 11.43532 22 01 31.11 -14 50 54.5 03QY90 304 Cn8883 2006 06 20.22472 22 07 02.97 -14 23 30.4 22.6R 03QY90 304 Cr4836 2006 06 21.40126 22 07 00.83 -14 23 40.3 03QY90 304 Cr4836 2006 06 21.43755 22 07 00.78 -14 23 40.8 03QY90 304 Cr4836 2007 10 11.38237 22 04 58.15 -14 39 52.0 24.0R 03QY90 250 S~06Ac 2007 10 11.39001 22 04 58.13 -14 39 52.1 03QY90 250 S~06Ac 2007 10 11.39765 22 04 58.11 -14 39 52.2 03QY90 250 S~06Ac 2007 10 11.40529 22 04 58.09 -14 39 52.3 03QY90 250 S~06Ad 2008 09 30.04035 22 10 08.88 -14 15 35.2 03QY90 807 C~06Ad 2008 09 30.17172 22 10 08.47 -14 15 37.1 03QY90 807 C~06Ad 2008 09 30.21987 22 10 08.30 -14 15 38.2 03QY90 807 C~06Ad 2008 10 01.23037 22 10 04.97 -14 15 53.9 03QY90 807 C~06Ad 2008 10 02.22156 22 10 01.77 -14 16 09.8 03QY90 807 C~06Ad 2021 10 03.128040 23 09 27.735 -09 04 32.65 23.0G 03QY90 G37 C~553k 2021 10 03.181210 23 09 27.542 -09 04 33.83 03QY90 G37 C~553k 2021 10 03.234120 23 09 27.334 -09 04 34.95 03QY90 G37 C~553k
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 0.61 0.00 0.29
2 0.0002 0.00 0.28 0.00 0.21
3 2.9899 0.00 -0.13 0.00 -0.20
4 2.9902 0.00 -0.05 0.00 -0.28
5 2.9927 0.00 -0.33 0.00 0.02
6 2.9929 0.00 -0.29 0.00 -0.74
7 3.0860 0.00 0.05 0.00 -1.17
8 3.0863 0.00 -0.43 0.00 0.13
9 3.1539 0.00 -0.01 0.00 0.01
10 3.1540 0.00 -0.03 0.00 0.02
11 3.1542 0.00 0.03 0.00 0.14
12 3.1567 0.00 0.05 0.00 0.10
13 3.1568 0.00 -0.46 0.00 0.20
14 3.7514 0.00 0.66 0.00 0.04
15 3.7517 0.00 -0.54 0.00 0.15
16 3.7518 0.00 0.60 0.00 1.05
17 3.7543 0.00 -0.23 0.00 -0.42
18 3.7546 0.00 -0.14 0.00 -0.01
19 4.0466 0.00 -0.09 0.00 0.15
20 4.0472 0.00 -0.06 0.00 -0.01
21 4.6334 0.00 -0.04 0.00 0.44
22 4.6334 0.00 -0.19 0.00 -0.01
23 4.6334 0.00 0.00 0.00 0.06
24 4.6334 0.00 0.27 0.00 -0.29
25 4.6334 0.00 0.07 0.00 -0.15
26 4.7812 0.00 0.06 0.00 0.04
27 4.7813 0.00 -0.07 0.00 0.14
28 4.8656 0.00 -0.15 0.00 0.16
29 4.8656 0.00 0.03 0.00 0.13
30 4.8711 0.00 0.11 0.00 0.17
31 4.8714 0.00 0.12 0.00 0.07
32 4.8716 0.00 -0.40 0.00 -0.27
33 4.8717 0.00 -0.23 0.00 -0.13
34 5.8130 0.00 ( 1.44) 0.00 ( -5.87)
35 5.8162 0.00 -0.09 0.00 -0.15
36 5.8163 0.00 0.16 0.00 -0.16
37 7.1221 0.00 0.32 0.00 -0.01
38 7.1221 0.00 0.31 0.00 -0.02
39 7.1222 0.00 0.31 0.00 -0.03
40 7.1222 0.00 0.31 0.00 -0.05
41 8.0931 0.00 -0.42 0.00 -0.00
42 8.0935 0.00 0.12 0.00 0.23
43 8.0936 0.00 0.01 0.00 -0.10
44 8.0964 0.00 -0.08 0.00 0.38
45 8.0991 0.00 -0.03 0.00 -0.01
46 21.1009 0.00 -0.15 0.00 -0.04
47 21.1010 0.00 0.05 0.00 -0.04
48 21.1012 0.00 0.02 0.00 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.
03QY90 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.875 42.875 42.875 ecceobj 0.049 0.049 0.049 incobj 3.770 3.770 3.770 qmin 39.223 39.223 39.224 qmax 46.662 46.664 46.655 amean 42.812 42.812 42.812 amin 42.476 42.476 42.477 amax 43.167 43.166 43.167 emean 0.057 0.057 0.057 emin 0.037 0.037 0.037 emax 0.081 0.081 0.081 imean 2.213 2.214 2.214 imin 1.172 1.172 1.172 imax 3.404 3.404 3.404 excite_mean 0.069 0.069 0.069 fracstop 1.000 1.000 1.000 cjmean 3.082 3.082 3.082 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 183.4 183.4 183.3 kozaiamp 179.9 180.0 180.0