| Parameter |
Value |
| Designation |
C/2006 S3 (LONEOS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-04-16T07:55:48.486720Z |
| Orbit solution date (soln_date, UTC) |
2022-06-07T21:43:59Z |
| Obs used |
5568 |
| NEO |
- |
| M1 |
6.100 |
| K1 |
7.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-04-22.0000000 |
| e |
1.00351612 |
| q (au) |
5.131152 |
| a (au) |
-1459.323142 |
| i (deg) |
166.032677 |
| Ω (om, deg) |
38.370869 |
| ω (w, deg) |
140.130175 |
| M (ma, deg) |
0.000100 |
Magnitude
Scatter + Global Linear
$$
M_a = (5.516 + 2.867\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
5.516 |
| n |
2.867 |
| gf |
1.000 |
| gb |
-0.973 |
| k |
1.000 |
| δ90 |
10.000 |
| Parameter |
Symbol |
Range |
Description |
| Absolute magnitude at 1 AU from Sun and Earth |
H0 |
-5 to 20 |
Intrinsic brightness of the comet |
| Photometric slope parameter |
n |
2 to 6 |
Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor |
gf |
0.8 to 1 |
Degree of forward scattering |
| Backward scattering asymmetry factor |
gb |
-1 to -0.5 |
Degree of backward scattering |
| Partitioning coefficient |
k |
0.8 to 1 |
Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio |
δ90 |
1 to 10 |
Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Residuals (Piecewise)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| Start (UTC) |
End (UTC) |
a |
b |
| 2006-08-29 |
2012-04-16 |
-1.6792 |
+1.675 |
| 2012-04-16 |
2020-11-24 |
+2.1626 |
-2.252 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
08:22:41.91 |
+05:18:24.2 |
HIP 41032 |
17.82 |
| 2026-06-01 12:00 |
08:22:43.82 |
+05:18:29.4 |
HIP 41032 |
18.01 |
| 2026-06-02 00:00 |
08:22:45.76 |
+05:18:34.4 |
HIP 41032 |
18.20 |
| 2026-06-02 12:00 |
08:22:47.72 |
+05:18:39.3 |
HIP 41032 |
18.41 |
| 2026-06-03 00:00 |
08:22:49.70 |
+05:18:44.0 |
HIP 41032 |
18.63 |
| 2026-06-03 12:00 |
08:22:51.71 |
+05:18:48.5 |
HIP 41032 |
18.86 |
| 2026-06-04 00:00 |
08:22:53.75 |
+05:18:52.9 |
HIP 41032 |
19.10 |
| 2026-06-04 12:00 |
08:22:55.81 |
+05:18:57.1 |
HIP 41032 |
19.35 |
| 2026-06-05 00:00 |
08:22:57.89 |
+05:19:01.1 |
HIP 41032 |
19.60 |
| 2026-06-05 12:00 |
08:23:00.00 |
+05:19:05.0 |
HIP 41032 |
19.87 |
| 2026-06-06 00:00 |
08:23:02.12 |
+05:19:08.7 |
HIP 41032 |
20.15 |
| 2026-06-06 12:00 |
08:23:04.28 |
+05:19:12.2 |
HIP 41032 |
20.44 |
| 2026-06-07 00:00 |
08:23:06.45 |
+05:19:15.6 |
HIP 41032 |
20.74 |
| 2026-06-07 12:00 |
08:23:08.65 |
+05:19:18.7 |
HIP 41032 |
21.05 |
| 2026-06-08 00:00 |
08:23:10.88 |
+05:19:21.7 |
HIP 41032 |
21.37 |
| 2026-06-08 12:00 |
08:23:13.12 |
+05:19:24.6 |
HIP 41032 |
21.70 |
| 2026-06-09 00:00 |
08:23:15.39 |
+05:19:27.3 |
HIP 41032 |
22.04 |
| 2026-06-09 12:00 |
08:23:17.68 |
+05:19:29.8 |
HIP 41032 |
22.39 |
| 2026-06-10 00:00 |
08:23:19.99 |
+05:19:32.1 |
HIP 41032 |
22.75 |
| 2026-06-10 12:00 |
08:23:22.33 |
+05:19:34.3 |
HIP 41240 |
22.72 |
| 2026-06-11 00:00 |
08:23:24.69 |
+05:19:36.3 |
HIP 41240 |
22.13 |
| 2026-06-11 12:00 |
08:23:27.06 |
+05:19:38.1 |
HIP 41240 |
21.54 |
| 2026-06-12 00:00 |
08:23:29.46 |
+05:19:39.7 |
HIP 41240 |
20.94 |
| 2026-06-12 12:00 |
08:23:31.88 |
+05:19:41.2 |
HIP 41240 |
20.34 |
| 2026-06-13 00:00 |
08:23:34.33 |
+05:19:42.5 |
HIP 41240 |
19.73 |
| 2026-06-13 12:00 |
08:23:36.79 |
+05:19:43.7 |
HIP 41240 |
19.12 |
| 2026-06-14 00:00 |
08:23:39.27 |
+05:19:44.7 |
HIP 41240 |
18.50 |
| 2026-06-14 12:00 |
08:23:41.78 |
+05:19:45.5 |
HIP 41240 |
17.87 |
| 2026-06-15 00:00 |
08:23:44.30 |
+05:19:46.1 |
HIP 41240 |
17.25 |
| 2026-06-15 12:00 |
08:23:46.84 |
+05:19:46.6 |
HIP 41240 |
16.62 |
| 2026-06-16 00:00 |
08:23:49.41 |
+05:19:46.9 |
HIP 41240 |
15.98 |
| 2026-06-16 12:00 |
08:23:51.99 |
+05:19:47.0 |
HIP 41240 |
15.34 |
| 2026-06-17 00:00 |
08:23:54.59 |
+05:19:47.0 |
HIP 41240 |
14.69 |
| 2026-06-17 12:00 |
08:23:57.21 |
+05:19:46.8 |
HIP 41240 |
14.04 |
| 2026-06-18 00:00 |
08:23:59.85 |
+05:19:46.4 |
HIP 41240 |
13.39 |
| 2026-06-18 12:00 |
08:24:02.51 |
+05:19:45.9 |
HIP 41240 |
12.73 |
| 2026-06-19 00:00 |
08:24:05.19 |
+05:19:45.2 |
HIP 41240 |
12.07 |
| 2026-06-19 12:00 |
08:24:07.88 |
+05:19:44.3 |
HIP 41240 |
11.41 |
| 2026-06-20 00:00 |
08:24:10.59 |
+05:19:43.3 |
HIP 41240 |
10.74 |
| 2026-06-20 12:00 |
08:24:13.32 |
+05:19:42.1 |
HIP 41240 |
10.07 |
| 2026-06-21 00:00 |
08:24:16.07 |
+05:19:40.7 |
HIP 41240 |
9.39 |
| 2026-06-21 12:00 |
08:24:18.83 |
+05:19:39.2 |
HIP 41240 |
8.72 |
| 2026-06-22 00:00 |
08:24:21.61 |
+05:19:37.5 |
HIP 41240 |
8.04 |