| Parameter |
Value |
| Designation |
336P/McNaught |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-08-18T08:36:24.405120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:30Z |
| Obs used |
164 |
| NEO |
- |
| M1 |
8.200 |
| K1 |
19.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2008-07-30.0000000 |
| e |
0.45286158 |
| q (au) |
2.633290 |
| a (au) |
4.812840 |
| i (deg) |
18.562108 |
| Ω (om, deg) |
299.239956 |
| ω (w, deg) |
313.964670 |
| M (ma, deg) |
66.429832 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.526 + 3.855\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.526 |
| n |
3.855 |
| gf |
0.999 |
| 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) |
| 2026-09-20 00:00 |
09:49:28.27 |
+06:46:38.7 |
HIP 48206 |
11.93 |
| 2026-09-20 12:00 |
09:49:54.11 |
+06:43:22.1 |
HIP 48206 |
15.13 |
| 2026-09-21 00:00 |
09:50:19.91 |
+06:40:05.2 |
HIP 48206 |
20.48 |
| 2026-09-21 12:00 |
09:50:45.66 |
+06:36:48.0 |
HIP 48404 |
22.14 |
| 2026-09-22 00:00 |
09:51:11.37 |
+06:33:30.6 |
HIP 48404 |
14.99 |
| 2026-09-22 12:00 |
09:51:37.04 |
+06:30:12.9 |
HIP 48404 |
7.92 |
| 2026-09-23 00:00 |
09:52:02.65 |
+06:26:54.9 |
HIP 48404 |
1.89 |
| 2026-09-23 12:00 |
09:52:28.23 |
+06:23:36.6 |
HIP 48404 |
6.87 |
| 2026-09-24 00:00 |
09:52:53.75 |
+06:20:18.1 |
HIP 48404 |
13.90 |
| 2026-09-24 12:00 |
09:53:19.23 |
+06:16:59.4 |
HIP 48519 |
20.35 |
| 2026-09-25 00:00 |
09:53:44.66 |
+06:13:40.3 |
HIP 48519 |
16.16 |
| 2026-09-25 12:00 |
09:54:10.04 |
+06:10:21.1 |
HIP 48519 |
14.50 |
| 2026-09-26 00:00 |
09:54:35.37 |
+06:07:01.5 |
HIP 48519 |
16.14 |
| 2026-09-26 12:00 |
09:55:00.65 |
+06:03:41.8 |
HIP 48519 |
20.29 |
| 2026-09-27 00:00 |
09:55:25.88 |
+06:00:21.8 |
HIP 48519 |
25.76 |
| 2026-09-27 12:00 |
09:55:51.06 |
+05:57:01.5 |
HIP 48790 |
29.53 |
| 2026-09-28 00:00 |
09:56:16.19 |
+05:53:41.0 |
HIP 48790 |
29.14 |
| 2026-09-28 12:00 |
09:56:41.26 |
+05:50:20.3 |
HIP 48790 |
30.45 |
| 2026-09-29 00:00 |
09:57:06.28 |
+05:46:59.3 |
HIP 48918 |
31.58 |
| 2026-09-29 12:00 |
09:57:31.25 |
+05:43:38.1 |
HIP 48918 |
29.60 |
| 2026-09-30 00:00 |
09:57:56.17 |
+05:40:16.6 |
HIP 49004 |
28.67 |
| 2026-09-30 12:00 |
09:58:21.03 |
+05:36:55.0 |
HIP 49004 |
22.25 |
| 2026-10-01 00:00 |
09:58:45.83 |
+05:33:33.1 |
HIP 49004 |
16.36 |
| 2026-10-01 12:00 |
09:59:10.58 |
+05:30:11.0 |
HIP 49004 |
11.81 |
| 2026-10-02 00:00 |
09:59:35.27 |
+05:26:48.7 |
HIP 49004 |
10.48 |
| 2026-10-02 12:00 |
09:59:59.90 |
+05:23:26.1 |
HIP 48989 |
11.04 |
| 2026-10-03 00:00 |
10:00:24.48 |
+05:20:03.4 |
HIP 48989 |
12.49 |
| 2026-10-03 12:00 |
10:00:48.99 |
+05:16:40.4 |
HIP 48989 |
16.94 |
| 2026-10-04 00:00 |
10:01:13.45 |
+05:13:17.3 |
HIP 49074 |
14.11 |
| 2026-10-04 12:00 |
10:01:37.84 |
+05:09:54.0 |
HIP 49074 |
14.23 |
| 2026-10-05 00:00 |
10:02:02.18 |
+05:06:30.4 |
HIP 49074 |
17.39 |
| 2026-10-05 12:00 |
10:02:26.44 |
+05:03:06.7 |
HIP 49074 |
22.31 |
| 2026-10-06 00:00 |
10:02:50.65 |
+04:59:42.8 |
HIP 49254 |
20.85 |
| 2026-10-06 12:00 |
10:03:14.79 |
+04:56:18.7 |
HIP 49254 |
16.49 |
| 2026-10-07 00:00 |
10:03:38.87 |
+04:52:54.5 |
HIP 49254 |
14.29 |
| 2026-10-07 12:00 |
10:04:02.88 |
+04:49:30.0 |
HIP 49254 |
15.21 |
| 2026-10-08 00:00 |
10:04:26.82 |
+04:46:05.4 |
HIP 49374 |
15.06 |
| 2026-10-08 12:00 |
10:04:50.70 |
+04:42:40.7 |
HIP 49374 |
17.58 |
| 2026-10-09 00:00 |
10:05:14.50 |
+04:39:15.8 |
HIP 49374 |
22.03 |
| 2026-10-09 12:00 |
10:05:38.24 |
+04:35:50.7 |
HIP 49374 |
27.47 |
| 2026-10-10 00:00 |
10:06:01.91 |
+04:32:25.5 |
HIP 49374 |
33.42 |
| 2026-10-10 12:00 |
10:06:25.50 |
+04:29:00.2 |
HIP 49692 |
33.35 |
| 2026-10-11 00:00 |
10:06:49.03 |
+04:25:34.7 |
HIP 49692 |
27.90 |