C/2006 S2 (LINEAR)
| Parameter |
Value |
| Designation |
C/2006 S2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-05-07T08:26:31.346880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:59Z |
| Obs used |
175 |
| NEO |
- |
| M1 |
13.800 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2006-12-27.0000000 |
| e |
1.00195952 |
| q (au) |
3.161510 |
| a (au) |
-1613.414402 |
| i (deg) |
98.959134 |
| Ω (om, deg) |
113.887214 |
| ω (w, deg) |
166.340993 |
| M (ma, deg) |
-0.001998 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.406 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.406 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.502 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
07:37:34.90 |
-27:30:56.3 |
HIP 37070 |
8.75 |
| 2026-02-03 12:00 |
07:37:31.47 |
-27:30:34.3 |
HIP 37070 |
7.93 |
| 2026-02-04 00:00 |
07:37:28.05 |
-27:30:12.0 |
HIP 37070 |
7.12 |
| 2026-02-04 12:00 |
07:37:24.65 |
-27:29:49.4 |
HIP 37070 |
6.32 |
| 2026-02-05 00:00 |
07:37:21.26 |
-27:29:26.5 |
HIP 37070 |
5.53 |
| 2026-02-05 12:00 |
07:37:17.88 |
-27:29:03.4 |
HIP 37070 |
4.75 |
| 2026-02-06 00:00 |
07:37:14.51 |
-27:28:40.0 |
HIP 37070 |
4.00 |
| 2026-02-06 12:00 |
07:37:11.16 |
-27:28:16.3 |
HIP 37070 |
3.29 |
| 2026-02-07 00:00 |
07:37:07.83 |
-27:27:52.3 |
HIP 37070 |
2.66 |
| 2026-02-07 12:00 |
07:37:04.51 |
-27:27:28.0 |
HIP 37070 |
2.17 |
| 2026-02-08 00:00 |
07:37:01.20 |
-27:27:03.5 |
HIP 37070 |
1.93 |
| 2026-02-08 12:00 |
07:36:57.91 |
-27:26:38.7 |
HIP 37070 |
2.03 |
| 2026-02-09 00:00 |
07:36:54.63 |
-27:26:13.6 |
HIP 37070 |
2.43 |
| 2026-02-09 12:00 |
07:36:51.37 |
-27:25:48.3 |
HIP 37070 |
3.01 |
| 2026-02-10 00:00 |
07:36:48.13 |
-27:25:22.6 |
HIP 37070 |
3.69 |
| 2026-02-10 12:00 |
07:36:44.90 |
-27:24:56.8 |
HIP 37070 |
4.42 |
| 2026-02-11 00:00 |
07:36:41.69 |
-27:24:30.6 |
HIP 37070 |
5.18 |
| 2026-02-11 12:00 |
07:36:38.50 |
-27:24:04.2 |
HIP 37070 |
5.96 |
| 2026-02-12 00:00 |
07:36:35.32 |
-27:23:37.5 |
HIP 37070 |
6.74 |
| 2026-02-12 12:00 |
07:36:32.16 |
-27:23:10.6 |
HIP 37070 |
7.54 |
| 2026-02-13 00:00 |
07:36:29.02 |
-27:22:43.4 |
HIP 37070 |
8.34 |
| 2026-02-13 12:00 |
07:36:25.89 |
-27:22:16.0 |
HIP 36987 |
8.86 |
| 2026-02-14 00:00 |
07:36:22.79 |
-27:21:48.3 |
HIP 36987 |
9.01 |
| 2026-02-14 12:00 |
07:36:19.70 |
-27:21:20.4 |
HIP 36987 |
9.24 |
| 2026-02-15 00:00 |
07:36:16.63 |
-27:20:52.2 |
HIP 36937 |
9.35 |
| 2026-02-15 12:00 |
07:36:13.58 |
-27:20:23.8 |
HIP 36937 |
8.59 |
| 2026-02-16 00:00 |
07:36:10.55 |
-27:19:55.1 |
HIP 36937 |
7.86 |
| 2026-02-16 12:00 |
07:36:07.54 |
-27:19:26.2 |
HIP 36937 |
7.15 |
| 2026-02-17 00:00 |
07:36:04.54 |
-27:18:57.0 |
HIP 36937 |
6.48 |
| 2026-02-17 12:00 |
07:36:01.57 |
-27:18:27.6 |
HIP 36937 |
5.84 |
| 2026-02-18 00:00 |
07:35:58.62 |
-27:17:58.0 |
HIP 36937 |
5.27 |
| 2026-02-18 12:00 |
07:35:55.69 |
-27:17:28.2 |
HIP 36937 |
4.77 |
| 2026-02-19 00:00 |
07:35:52.77 |
-27:16:58.1 |
HIP 36937 |
4.37 |
| 2026-02-19 12:00 |
07:35:49.88 |
-27:16:27.8 |
HIP 36937 |
4.11 |
| 2026-02-20 00:00 |
07:35:47.01 |
-27:15:57.3 |
HIP 36937 |
4.01 |
| 2026-02-20 12:00 |
07:35:44.16 |
-27:15:26.5 |
HIP 36937 |
4.07 |
| 2026-02-21 00:00 |
07:35:41.34 |
-27:14:55.6 |
HIP 36937 |
4.30 |
| 2026-02-21 12:00 |
07:35:38.53 |
-27:14:24.4 |
HIP 36937 |
4.66 |
| 2026-02-22 00:00 |
07:35:35.75 |
-27:13:53.0 |
HIP 36937 |
5.13 |
| 2026-02-22 12:00 |
07:35:32.99 |
-27:13:21.4 |
HIP 36937 |
5.69 |
| 2026-02-23 00:00 |
07:35:30.25 |
-27:12:49.6 |
HIP 36937 |
6.29 |
| 2026-02-23 12:00 |
07:35:27.53 |
-27:12:17.6 |
HIP 36937 |
6.95 |
| 2026-02-24 00:00 |
07:35:24.84 |
-27:11:45.4 |
HIP 36937 |
7.63 |