| 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 |
0.999 |
| 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) |
| 2026-05-12 00:00 |
08:21:48.09 |
+05:12:38.7 |
HIP 41032 |
15.20 |
| 2026-05-12 12:00 |
08:21:48.86 |
+05:12:50.6 |
HIP 41032 |
15.24 |
| 2026-05-13 00:00 |
08:21:49.65 |
+05:13:02.3 |
HIP 41032 |
15.27 |
| 2026-05-13 12:00 |
08:21:50.48 |
+05:13:13.8 |
HIP 41032 |
15.29 |
| 2026-05-14 00:00 |
08:21:51.34 |
+05:13:25.1 |
HIP 41032 |
15.32 |
| 2026-05-14 12:00 |
08:21:52.23 |
+05:13:36.3 |
HIP 41032 |
15.35 |
| 2026-05-15 00:00 |
08:21:53.15 |
+05:13:47.4 |
HIP 41032 |
15.37 |
| 2026-05-15 12:00 |
08:21:54.10 |
+05:13:58.3 |
HIP 41032 |
15.39 |
| 2026-05-16 00:00 |
08:21:55.08 |
+05:14:09.0 |
HIP 41032 |
15.42 |
| 2026-05-16 12:00 |
08:21:56.10 |
+05:14:19.5 |
HIP 41032 |
15.44 |
| 2026-05-17 00:00 |
08:21:57.14 |
+05:14:29.9 |
HIP 41032 |
15.46 |
| 2026-05-17 12:00 |
08:21:58.22 |
+05:14:40.1 |
HIP 41032 |
15.48 |
| 2026-05-18 00:00 |
08:21:59.32 |
+05:14:50.2 |
HIP 41032 |
15.51 |
| 2026-05-18 12:00 |
08:22:00.46 |
+05:15:00.1 |
HIP 41032 |
15.53 |
| 2026-05-19 00:00 |
08:22:01.62 |
+05:15:09.8 |
HIP 41032 |
15.56 |
| 2026-05-19 12:00 |
08:22:02.82 |
+05:15:19.4 |
HIP 41032 |
15.59 |
| 2026-05-20 00:00 |
08:22:04.05 |
+05:15:28.8 |
HIP 41032 |
15.61 |
| 2026-05-20 12:00 |
08:22:05.30 |
+05:15:38.0 |
HIP 41032 |
15.65 |
| 2026-05-21 00:00 |
08:22:06.59 |
+05:15:47.1 |
HIP 41032 |
15.68 |
| 2026-05-21 12:00 |
08:22:07.90 |
+05:15:56.0 |
HIP 41032 |
15.72 |
| 2026-05-22 00:00 |
08:22:09.24 |
+05:16:04.7 |
HIP 41032 |
15.76 |
| 2026-05-22 12:00 |
08:22:10.61 |
+05:16:13.3 |
HIP 41032 |
15.80 |
| 2026-05-23 00:00 |
08:22:12.01 |
+05:16:21.7 |
HIP 41032 |
15.85 |
| 2026-05-23 12:00 |
08:22:13.44 |
+05:16:29.9 |
HIP 41032 |
15.90 |
| 2026-05-24 00:00 |
08:22:14.90 |
+05:16:38.0 |
HIP 41032 |
15.96 |
| 2026-05-24 12:00 |
08:22:16.39 |
+05:16:45.9 |
HIP 41032 |
16.03 |
| 2026-05-25 00:00 |
08:22:17.90 |
+05:16:53.6 |
HIP 41032 |
16.09 |
| 2026-05-25 12:00 |
08:22:19.44 |
+05:17:01.2 |
HIP 41032 |
16.17 |
| 2026-05-26 00:00 |
08:22:21.01 |
+05:17:08.6 |
HIP 41032 |
16.25 |
| 2026-05-26 12:00 |
08:22:22.60 |
+05:17:15.8 |
HIP 41032 |
16.34 |
| 2026-05-27 00:00 |
08:22:24.23 |
+05:17:22.8 |
HIP 41032 |
16.43 |
| 2026-05-27 12:00 |
08:22:25.88 |
+05:17:29.7 |
HIP 41032 |
16.53 |
| 2026-05-28 00:00 |
08:22:27.55 |
+05:17:36.5 |
HIP 41032 |
16.64 |
| 2026-05-28 12:00 |
08:22:29.26 |
+05:17:43.0 |
HIP 41032 |
16.76 |
| 2026-05-29 00:00 |
08:22:30.99 |
+05:17:49.4 |
HIP 41032 |
16.88 |
| 2026-05-29 12:00 |
08:22:32.74 |
+05:17:55.6 |
HIP 41032 |
17.02 |
| 2026-05-30 00:00 |
08:22:34.52 |
+05:18:01.7 |
HIP 41032 |
17.16 |
| 2026-05-30 12:00 |
08:22:36.33 |
+05:18:07.5 |
HIP 41032 |
17.31 |
| 2026-05-31 00:00 |
08:22:38.17 |
+05:18:13.3 |
HIP 41032 |
17.47 |
| 2026-05-31 12:00 |
08:22:40.03 |
+05:18:18.8 |
HIP 41032 |
17.64 |
| 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 |