| 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 |
0.996 |
| gb |
-0.500 |
| 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) |
| 2026-06-01 00:00 |
07:35:27.82 |
-25:19:19.6 |
HIP 36944 |
3.28 |
| 2026-06-01 12:00 |
07:35:30.34 |
-25:18:57.6 |
HIP 36944 |
2.91 |
| 2026-06-02 00:00 |
07:35:32.89 |
-25:18:35.9 |
HIP 36944 |
2.67 |
| 2026-06-02 12:00 |
07:35:35.44 |
-25:18:14.4 |
HIP 36944 |
2.58 |
| 2026-06-03 00:00 |
07:35:38.02 |
-25:17:53.1 |
HIP 36944 |
2.67 |
| 2026-06-03 12:00 |
07:35:40.61 |
-25:17:32.1 |
HIP 36944 |
2.91 |
| 2026-06-04 00:00 |
07:35:43.23 |
-25:17:11.3 |
HIP 36944 |
3.27 |
| 2026-06-04 12:00 |
07:35:45.85 |
-25:16:50.8 |
HIP 36944 |
3.72 |
| 2026-06-05 00:00 |
07:35:48.50 |
-25:16:30.6 |
HIP 36944 |
4.24 |
| 2026-06-05 12:00 |
07:35:51.16 |
-25:16:10.6 |
HIP 36944 |
4.79 |
| 2026-06-06 00:00 |
07:35:53.84 |
-25:15:50.8 |
HIP 36944 |
5.37 |
| 2026-06-06 12:00 |
07:35:56.53 |
-25:15:31.4 |
HIP 36944 |
5.98 |
| 2026-06-07 00:00 |
07:35:59.24 |
-25:15:12.1 |
HIP 36944 |
6.60 |
| 2026-06-07 12:00 |
07:36:01.97 |
-25:14:53.2 |
HIP 36944 |
7.23 |
| 2026-06-08 00:00 |
07:36:04.71 |
-25:14:34.5 |
HIP 36944 |
7.87 |
| 2026-06-08 12:00 |
07:36:07.46 |
-25:14:16.0 |
HIP 37025 |
7.93 |
| 2026-06-09 00:00 |
07:36:10.24 |
-25:13:57.8 |
HIP 37025 |
7.74 |
| 2026-06-09 12:00 |
07:36:13.02 |
-25:13:39.9 |
HIP 37025 |
7.60 |
| 2026-06-10 00:00 |
07:36:15.83 |
-25:13:22.2 |
HIP 37025 |
7.52 |
| 2026-06-10 12:00 |
07:36:18.64 |
-25:13:04.8 |
HIP 37025 |
7.50 |
| 2026-06-11 00:00 |
07:36:21.47 |
-25:12:47.7 |
HIP 37025 |
7.54 |
| 2026-06-11 12:00 |
07:36:24.32 |
-25:12:30.9 |
HIP 37025 |
7.64 |
| 2026-06-12 00:00 |
07:36:27.18 |
-25:12:14.3 |
HIP 37025 |
7.80 |
| 2026-06-12 12:00 |
07:36:30.05 |
-25:11:57.9 |
HIP 37025 |
8.01 |
| 2026-06-13 00:00 |
07:36:32.94 |
-25:11:41.9 |
HIP 37025 |
8.27 |
| 2026-06-13 12:00 |
07:36:35.84 |
-25:11:26.1 |
HIP 37025 |
8.58 |
| 2026-06-14 00:00 |
07:36:38.76 |
-25:11:10.6 |
HIP 37025 |
8.93 |
| 2026-06-14 12:00 |
07:36:41.69 |
-25:10:55.3 |
HIP 37025 |
9.32 |
| 2026-06-15 00:00 |
07:36:44.63 |
-25:10:40.3 |
HIP 37025 |
9.74 |
| 2026-06-15 12:00 |
07:36:47.58 |
-25:10:25.6 |
HIP 37025 |
10.18 |
| 2026-06-16 00:00 |
07:36:50.55 |
-25:10:11.2 |
HIP 37025 |
10.66 |
| 2026-06-16 12:00 |
07:36:53.53 |
-25:09:57.1 |
HIP 37025 |
11.15 |
| 2026-06-17 00:00 |
07:36:56.52 |
-25:09:43.2 |
HIP 37025 |
11.67 |
| 2026-06-17 12:00 |
07:36:59.52 |
-25:09:29.6 |
HIP 37025 |
12.20 |
| 2026-06-18 00:00 |
07:37:02.53 |
-25:09:16.2 |
HIP 37025 |
12.75 |
| 2026-06-18 12:00 |
07:37:05.56 |
-25:09:03.2 |
HIP 37025 |
13.32 |
| 2026-06-19 00:00 |
07:37:08.60 |
-25:08:50.4 |
HIP 37025 |
13.89 |
| 2026-06-19 12:00 |
07:37:11.64 |
-25:08:37.9 |
HIP 37025 |
14.48 |
| 2026-06-20 00:00 |
07:37:14.70 |
-25:08:25.7 |
HIP 37025 |
15.07 |
| 2026-06-20 12:00 |
07:37:17.77 |
-25:08:13.8 |
HIP 37025 |
15.68 |
| 2026-06-21 00:00 |
07:37:20.85 |
-25:08:02.1 |
HIP 37025 |
16.29 |
| 2026-06-21 12:00 |
07:37:23.94 |
-25:07:50.7 |
HIP 37025 |
16.91 |
| 2026-06-22 00:00 |
07:37:27.04 |
-25:07:39.6 |
HIP 37025 |
17.53 |