| 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) |
| 2026-03-26 00:00 |
07:33:30.68 |
-26:35:05.2 |
HIP 36598 |
25.55 |
| 2026-03-26 12:00 |
07:33:29.64 |
-26:34:25.9 |
HIP 36598 |
25.22 |
| 2026-03-27 00:00 |
07:33:28.64 |
-26:33:46.5 |
HIP 36598 |
24.92 |
| 2026-03-27 12:00 |
07:33:27.67 |
-26:33:07.0 |
HIP 36598 |
24.63 |
| 2026-03-28 00:00 |
07:33:26.73 |
-26:32:27.6 |
HIP 36598 |
24.37 |
| 2026-03-28 12:00 |
07:33:25.81 |
-26:31:48.1 |
HIP 36598 |
24.14 |
| 2026-03-29 00:00 |
07:33:24.93 |
-26:31:08.6 |
HIP 36598 |
23.93 |
| 2026-03-29 12:00 |
07:33:24.08 |
-26:30:29.1 |
HIP 36598 |
23.74 |
| 2026-03-30 00:00 |
07:33:23.26 |
-26:29:49.6 |
HIP 36598 |
23.58 |
| 2026-03-30 12:00 |
07:33:22.47 |
-26:29:10.1 |
HIP 36598 |
23.44 |
| 2026-03-31 00:00 |
07:33:21.70 |
-26:28:30.6 |
HIP 36598 |
23.33 |
| 2026-03-31 12:00 |
07:33:20.97 |
-26:27:51.0 |
HIP 36598 |
23.25 |
| 2026-04-01 00:00 |
07:33:20.27 |
-26:27:11.5 |
HIP 36598 |
23.19 |
| 2026-04-01 12:00 |
07:33:19.60 |
-26:26:32.0 |
HIP 36598 |
23.16 |
| 2026-04-02 00:00 |
07:33:18.96 |
-26:25:52.4 |
HIP 36598 |
23.15 |
| 2026-04-02 12:00 |
07:33:18.35 |
-26:25:12.9 |
HIP 36598 |
23.17 |
| 2026-04-03 00:00 |
07:33:17.77 |
-26:24:33.4 |
HIP 36598 |
23.22 |
| 2026-04-03 12:00 |
07:33:17.22 |
-26:23:53.9 |
HIP 36598 |
23.29 |
| 2026-04-04 00:00 |
07:33:16.71 |
-26:23:14.4 |
HIP 36837 |
22.92 |
| 2026-04-04 12:00 |
07:33:16.22 |
-26:22:35.0 |
HIP 36837 |
22.54 |
| 2026-04-05 00:00 |
07:33:15.76 |
-26:21:55.5 |
HIP 36837 |
22.16 |
| 2026-04-05 12:00 |
07:33:15.33 |
-26:21:16.1 |
HIP 36837 |
21.80 |
| 2026-04-06 00:00 |
07:33:14.93 |
-26:20:36.7 |
HIP 36837 |
21.44 |
| 2026-04-06 12:00 |
07:33:14.57 |
-26:19:57.3 |
HIP 36837 |
21.10 |
| 2026-04-07 00:00 |
07:33:14.23 |
-26:19:18.0 |
HIP 36837 |
20.77 |
| 2026-04-07 12:00 |
07:33:13.92 |
-26:18:38.7 |
HIP 36837 |
20.44 |
| 2026-04-08 00:00 |
07:33:13.65 |
-26:17:59.4 |
HIP 36837 |
20.13 |
| 2026-04-08 12:00 |
07:33:13.40 |
-26:17:20.2 |
HIP 36837 |
19.83 |
| 2026-04-09 00:00 |
07:33:13.19 |
-26:16:41.0 |
HIP 36837 |
19.54 |
| 2026-04-09 12:00 |
07:33:13.00 |
-26:16:01.8 |
HIP 36837 |
19.26 |
| 2026-04-10 00:00 |
07:33:12.85 |
-26:15:22.7 |
HIP 36837 |
19.00 |
| 2026-04-10 12:00 |
07:33:12.72 |
-26:14:43.6 |
HIP 36837 |
18.74 |
| 2026-04-11 00:00 |
07:33:12.63 |
-26:14:04.6 |
HIP 36837 |
18.51 |
| 2026-04-11 12:00 |
07:33:12.57 |
-26:13:25.7 |
HIP 36837 |
18.28 |
| 2026-04-12 00:00 |
07:33:12.53 |
-26:12:46.8 |
HIP 36837 |
18.07 |
| 2026-04-12 12:00 |
07:33:12.53 |
-26:12:07.9 |
HIP 36837 |
17.88 |
| 2026-04-13 00:00 |
07:33:12.56 |
-26:11:29.1 |
HIP 36837 |
17.70 |
| 2026-04-13 12:00 |
07:33:12.61 |
-26:10:50.4 |
HIP 36837 |
17.53 |
| 2026-04-14 00:00 |
07:33:12.70 |
-26:10:11.8 |
HIP 36837 |
17.39 |
| 2026-04-14 12:00 |
07:33:12.82 |
-26:09:33.2 |
HIP 36837 |
17.25 |
| 2026-04-15 00:00 |
07:33:12.97 |
-26:08:54.7 |
HIP 36837 |
17.14 |
| 2026-04-15 12:00 |
07:33:13.14 |
-26:08:16.3 |
HIP 36837 |
17.04 |
| 2026-04-16 00:00 |
07:33:13.35 |
-26:07:37.9 |
HIP 36837 |
16.96 |