| Parameter |
Value |
| Designation |
356P/WISE |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-12-17T01:18:02.404800Z |
| Orbit solution date (soln_date, UTC) |
2026-04-27T13:42:35Z |
| Obs used |
220 |
| NEO |
- |
| M1 |
5.800 |
| K1 |
26.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2018-05-26.0000000 |
| e |
0.35414402 |
| q (au) |
2.689612 |
| a (au) |
4.164414 |
| i (deg) |
9.629137 |
| Ω (om, deg) |
160.805393 |
| ω (w, deg) |
226.159766 |
| M (ma, deg) |
18.550090 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.411 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.411 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.913 |
| 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 |
02:21:34.53 |
+08:41:30.6 |
HIP 10975 |
11.74 |
| 2026-06-01 12:00 |
02:22:25.59 |
+08:44:44.3 |
HIP 11106 |
14.25 |
| 2026-06-02 00:00 |
02:23:16.63 |
+08:47:57.0 |
HIP 11106 |
16.00 |
| 2026-06-02 12:00 |
02:24:07.65 |
+08:51:08.6 |
HIP 11314 |
23.60 |
| 2026-06-03 00:00 |
02:24:58.65 |
+08:54:19.1 |
HIP 11314 |
14.65 |
| 2026-06-03 12:00 |
02:25:49.63 |
+08:57:28.6 |
HIP 11314 |
14.48 |
| 2026-06-04 00:00 |
02:26:40.58 |
+09:00:37.0 |
HIP 11314 |
23.25 |
| 2026-06-04 12:00 |
02:27:31.51 |
+09:03:44.3 |
HIP 11557 |
26.99 |
| 2026-06-05 00:00 |
02:28:22.42 |
+09:06:50.5 |
HIP 11602 |
19.11 |
| 2026-06-05 12:00 |
02:29:13.30 |
+09:09:55.6 |
HIP 11602 |
10.98 |
| 2026-06-06 00:00 |
02:30:04.15 |
+09:12:59.6 |
HIP 11602 |
14.49 |
| 2026-06-06 12:00 |
02:30:54.99 |
+09:16:02.5 |
HIP 11793 |
24.11 |
| 2026-06-07 00:00 |
02:31:45.79 |
+09:19:04.3 |
HIP 11793 |
19.23 |
| 2026-06-07 12:00 |
02:32:36.57 |
+09:22:04.9 |
HIP 11793 |
22.14 |
| 2026-06-08 00:00 |
02:33:27.32 |
+09:25:04.5 |
HIP 11793 |
30.69 |
| 2026-06-08 12:00 |
02:34:18.05 |
+09:28:02.9 |
HIP 11793 |
41.51 |
| 2026-06-09 00:00 |
02:35:08.74 |
+09:31:00.1 |
HIP 12227 |
33.80 |
| 2026-06-09 12:00 |
02:35:59.41 |
+09:33:56.2 |
HIP 12227 |
21.20 |
| 2026-06-10 00:00 |
02:36:50.05 |
+09:36:51.2 |
HIP 12227 |
9.27 |
| 2026-06-10 12:00 |
02:37:40.65 |
+09:39:45.0 |
HIP 12227 |
7.12 |
| 2026-06-11 00:00 |
02:38:31.23 |
+09:42:37.6 |
HIP 12227 |
18.51 |
| 2026-06-11 12:00 |
02:39:21.77 |
+09:45:29.1 |
HIP 12529 |
27.53 |
| 2026-06-12 00:00 |
02:40:12.28 |
+09:48:19.4 |
HIP 12529 |
15.22 |
| 2026-06-12 12:00 |
02:41:02.76 |
+09:51:08.5 |
HIP 12529 |
5.60 |
| 2026-06-13 00:00 |
02:41:53.20 |
+09:53:56.4 |
HIP 12529 |
12.48 |
| 2026-06-13 12:00 |
02:42:43.60 |
+09:56:43.1 |
HIP 12529 |
24.57 |
| 2026-06-14 00:00 |
02:43:33.97 |
+09:59:28.6 |
HIP 12828 |
21.58 |
| 2026-06-14 12:00 |
02:44:24.30 |
+10:02:12.9 |
HIP 12828 |
9.16 |
| 2026-06-15 00:00 |
02:45:14.60 |
+10:04:56.0 |
HIP 12828 |
4.88 |
| 2026-06-15 12:00 |
02:46:04.85 |
+10:07:37.9 |
HIP 12828 |
16.87 |
| 2026-06-16 00:00 |
02:46:55.07 |
+10:10:18.5 |
HIP 13042 |
10.71 |
| 2026-06-16 12:00 |
02:47:45.24 |
+10:12:57.9 |
HIP 13043 |
2.01 |
| 2026-06-17 00:00 |
02:48:35.37 |
+10:15:36.1 |
HIP 13043 |
14.39 |
| 2026-06-17 12:00 |
02:49:25.46 |
+10:18:13.0 |
HIP 13043 |
26.97 |
| 2026-06-18 00:00 |
02:50:15.50 |
+10:20:48.7 |
HIP 13342 |
27.97 |
| 2026-06-18 12:00 |
02:51:05.50 |
+10:23:23.2 |
HIP 13342 |
17.88 |
| 2026-06-19 00:00 |
02:51:55.46 |
+10:25:56.4 |
HIP 13342 |
13.15 |
| 2026-06-19 12:00 |
02:52:45.37 |
+10:28:28.3 |
HIP 13342 |
18.45 |
| 2026-06-20 00:00 |
02:53:35.24 |
+10:30:59.0 |
HIP 13611 |
26.78 |
| 2026-06-20 12:00 |
02:54:25.05 |
+10:33:28.4 |
HIP 13611 |
15.52 |
| 2026-06-21 00:00 |
02:55:14.82 |
+10:35:56.6 |
HIP 13611 |
8.75 |
| 2026-06-21 12:00 |
02:56:04.55 |
+10:38:23.5 |
HIP 13611 |
14.94 |
| 2026-06-22 00:00 |
02:56:54.22 |
+10:40:49.1 |
HIP 13759 |
8.11 |