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: 99HS11
# Created Fri Nov 22 02:08:00 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 33 observations of 33
# Arc: 15.02y
# First observation: 1999/04/17
# Last observation: 2014/04/25
# Chi-squared of fit: 135.92 DOF: 60 RMS: 0.36
# Min/Max residuals: -1.55 0.84
# Exact a, adot, b, bdot, g, gdot:
1.335245E-05 2.228594E-02 -6.820423E-07 -1.533812E-04 2.337554E-02 -4.202107E-04
# Covariance matrix:
1.4367E-13 -5.5825E-14 -8.6029E-16 2.8782E-16 -1.0165E-13 -1.3261E-13
-5.5825E-14 3.8779E-14 7.6985E-16 -2.1565E-16 1.0367E-13 1.0132E-13
-8.6029E-16 7.6985E-16 8.0173E-14 -9.1630E-15 3.2090E-15 2.0417E-15
2.8782E-16 -2.1565E-16 -9.1630E-15 2.3139E-15 -5.1629E-16 -6.0838E-16
-1.0165E-13 1.0367E-13 3.2090E-15 -5.1629E-16 5.4809E-13 2.6388E-13
-1.3261E-13 1.0132E-13 2.0417E-15 -6.0838E-16 2.6388E-13 2.8380E-13
# lat0 lon0 xBary yBary zBary JD0
2.630140 -155.591117 -0.038439 0.046134 -1.009533 2451285.703223
# Heliocentric elements and errors
Epoch: 2451286.5000 = 1999/04/18
Mean Anomaly: 275.86893 +/- 0.240
Argument of Peri: 185.03908 +/- 0.253
Long of Asc Node: 105.66927 +/- 0.003
Inclination: 2.60043 +/- 0.000
Eccentricity: 0.01855682 +/- 0.0000
Semi-Major Axis: 43.84983267 +/- 0.0050
Time of Perihelion: 2476072.3752 +/- 72.1
Perihelion: 43.03611901 +/- 0.0051
Aphelion: 44.66354634 +/- 0.0053
Period (y) 290.3756 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.81104406 +/- 0.0012
Ecliptic Y -18.11241882 +/- 0.0006
Ecliptic Z 1.96308869 +/- 0.0001
Ecliptic XDOT 0.00112024 +/- 0.0000
Ecliptic YDOT -0.00234819 +/- 0.0000
Ecliptic ZDOT -0.00002018 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.78165940 +/- 0.0011
Geocenter to KBO 42.77980555 +/- 0.0014
# Hcoef: 6.72
The following table shows the complete astrometric record for 99HS11. 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 (99HS11) followed by the observatory code and reference code for the source of the astrometry.
1999 04 17.20248 13 34 18.65 -07 00 48.9 22.2R 99HS11 695 Ca4929 1999 04 17.28309 13 34 18.30 -07 00 46.9 99HS11 695 Ca4929 1999 04 17.38056 13 34 17.84 -07 00 44.5 99HS11 695 Ca4929 1999 05 05.90238 13 32 58.69 -06 53 17.8 99HS11 950 Ca4929 1999 05 05.96308 13 32 58.47 -06 53 16.3 99HS11 950 Ca4929 1999 05 06.01859 13 32 58.25 -06 53 14.7 99HS11 950 Ca4930 2000 03 29.53373 13 40 22.06 -07 36 39.8 22.9R 99HS11 568 Cb1943 2000 03 29.56239 13 40 21.94 -07 36 39.0 22.6R 99HS11 568 Cb1943 2000 03 29.59068 13 40 21.85 -07 36 38.4 22.7R 99HS11 568 Cb1943 2000 03 30.33561 13 40 18.75 -07 36 19.9 22.6R 99HS11 695 Cb1943 2000 04 05.29860 13 39 53.36 -07 33 48.6 22.8R 99HS11 709 Cb1943 2000 04 05.35155 13 39 53.24 -07 33 48.8 22.8R 99HS11 709 Cb1943 2000 04 05.40449 13 39 53.03 -07 33 47.2 23.2R 99HS11 709 Cb1943 2001 03 24.41495 13 45 30.68 -08 06 51.7 22.7R 99HS11 695 Cc7487 2001 03 24.49065 13 45 30.37 -08 06 50.0 99HS11 695 Cc7487 2001 03 25.20422 13 45 27.59 -08 06 32.0 22.0 99HS11 304 Ce8605 2001 03 25.23089 13 45 27.48 -08 06 32.0 99HS11 304 Ce8605 2001 05 22.34262 13 41 25.46 -07 43 59.9 99HS11 568 Cd2241 2001 05 22.37538 13 41 25.34 -07 43 59.4 99HS11 568 Cd2241 2004 05 26.12531 13 55 35.69 -09 06 14.7 22.8R 99HS11 304 Ck8632 2004 05 26.12839 13 55 35.69 -09 06 14.8 22.9R 99HS11 304 Ck8632 2004 05 26.13123 13 55 35.67 -09 06 14.5 99HS11 304 Ck8632 2004 05 26.13359 13 55 35.67 -09 06 14.9 99HS11 304 Ck8632 2004 05 26.13596 13 55 35.67 -09 06 15.0 99HS11 304 Ck8632 2004 05 26.13833 13 55 35.65 -09 06 14.7 99HS11 304 Ck8632 2004 05 26.15914 13 55 35.55 -09 06 14.5 99HS11 304 Ck8632 2004 05 26.16222 13 55 35.54 -09 06 14.5 99HS11 304 Ck8632 2006 05 26.219207 14 05 19.74 -10 01 04.5 23.7V 99HS11 645 C~1eMn 2006 05 26.220036 14 05 19.74 -10 01 04.5 22.3V 99HS11 645 C~1eMn 2006 05 26.222524 14 05 19.74 -10 01 04.5 24.6V 99HS11 645 C~1eMn 2014 04 23.34703 14 47 18.28 -13 39 27.8 99HS11 W84 C~1TiX 2014 04 24.36830 14 47 13.70 -13 39 06.5 24.3V 99HS11 W84 C~1TiX 2014 04 25.38549 14 47 09.09 -13 38 45.3 99HS11 W84 C~1TiX
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 0.38 0.00 -0.02
2 0.0002 0.00 0.51 0.00 -0.06
3 0.0005 0.00 0.14 0.00 -0.14
4 0.0512 0.00 -0.52 0.00 -0.18
5 0.0514 0.00 -0.05 0.00 -0.03
6 0.0515 0.00 0.10 0.00 0.33
7 0.9509 0.00 -0.15 0.00 -0.08
8 0.9510 0.00 -0.14 0.00 0.01
9 0.9511 0.00 0.30 0.00 -0.10
10 0.9531 0.00 0.09 0.00 -0.18
11 0.9695 0.00 -1.55 0.00 0.48
12 0.9696 0.00 0.13 0.00 -1.06
13 0.9698 0.00 0.45 0.00 -0.81
14 1.9362 0.00 -0.02 0.00 0.22
15 1.9364 0.00 -0.13 0.00 0.11
16 1.9384 0.00 0.26 0.00 0.84
17 1.9385 0.00 0.22 0.00 0.20
18 2.0976 0.00 -0.03 0.00 0.20
19 2.0977 0.00 -0.07 0.00 0.12
20 5.1086 0.00 0.02 0.00 0.43
21 5.1086 0.00 0.19 0.00 0.27
22 5.1086 0.00 0.04 0.00 0.52
23 5.1086 0.00 0.17 0.00 0.08
24 5.1086 0.00 0.29 0.00 -0.06
25 5.1087 0.00 0.12 0.00 0.20
26 5.1087 0.00 -0.26 0.00 0.05
27 5.1087 0.00 -0.24 0.00 -0.00
28 7.1075 0.00 -0.12 0.00 -0.45
29 7.1075 0.00 -0.07 0.00 -0.47
30 7.1075 0.00 0.07 0.00 -0.51
31 15.0175 0.00 0.03 0.00 -0.08
32 15.0203 0.00 0.14 0.00 0.03
33 15.0231 0.00 -0.20 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.
99HS11 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.848 43.848 43.848 ecceobj 0.017 0.017 0.017 incobj 2.601 2.601 2.601 qmin 42.746 42.747 42.745 qmax 45.769 45.769 45.769 amean 44.171 44.171 44.171 amin 43.830 43.828 43.832 amax 44.518 44.517 44.519 emean 0.015 0.015 0.015 emin 0.000 0.000 0.000 emax 0.028 0.028 0.028 imean 1.077 1.077 1.077 imin 0.486 0.486 0.486 imax 1.643 1.643 1.643 excite_mean 0.025 0.025 0.025 fracstop 1.000 1.000 1.000 cjmean 3.103 3.103 3.103 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 172.6 172.4 172.5 kozaiamp 180.0 180.0 180.0