| Parameter |
Value |
| Designation |
360P/WISE |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-08-18T09:32:32.017920Z |
| Orbit solution date (soln_date, UTC) |
2025-01-02T20:12:57Z |
| Obs used |
208 |
| NEO |
- |
| M1 |
18.500 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2018-07-24.0000000 |
| e |
0.49790664 |
| q (au) |
1.860385 |
| a (au) |
3.705258 |
| i (deg) |
24.078046 |
| Ω (om, deg) |
2.227777 |
| ω (w, deg) |
354.137718 |
| M (ma, deg) |
46.929640 |
Magnitude
Scatter + Global Linear
$$
M_a = (17.706 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
17.706 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
08:09:38.85 |
+42:41:58.1 |
HIP 40052 |
14.53 |
| 2026-03-26 12:00 |
08:09:38.24 |
+42:38:30.0 |
HIP 39938 |
12.96 |
| 2026-03-27 00:00 |
08:09:37.97 |
+42:35:01.5 |
HIP 39938 |
9.58 |
| 2026-03-27 12:00 |
08:09:38.02 |
+42:31:32.6 |
HIP 39938 |
6.33 |
| 2026-03-28 00:00 |
08:09:38.41 |
+42:28:03.3 |
HIP 39938 |
3.59 |
| 2026-03-28 12:00 |
08:09:39.13 |
+42:24:33.7 |
HIP 39938 |
3.23 |
| 2026-03-29 00:00 |
08:09:40.16 |
+42:21:03.7 |
HIP 39938 |
5.73 |
| 2026-03-29 12:00 |
08:09:41.53 |
+42:17:33.4 |
HIP 39938 |
8.97 |
| 2026-03-30 00:00 |
08:09:43.21 |
+42:14:02.7 |
HIP 39938 |
12.37 |
| 2026-03-30 12:00 |
08:09:45.20 |
+42:10:31.8 |
HIP 39938 |
15.85 |
| 2026-03-31 00:00 |
08:09:47.52 |
+42:07:00.6 |
HIP 39938 |
19.37 |
| 2026-03-31 12:00 |
08:09:50.14 |
+42:03:29.1 |
HIP 39938 |
22.92 |
| 2026-04-01 00:00 |
08:09:53.08 |
+41:59:57.3 |
HIP 40013 |
22.23 |
| 2026-04-01 12:00 |
08:09:56.33 |
+41:56:25.3 |
HIP 40013 |
18.65 |
| 2026-04-02 00:00 |
08:09:59.88 |
+41:52:53.0 |
HIP 40013 |
15.06 |
| 2026-04-02 12:00 |
08:10:03.73 |
+41:49:20.6 |
HIP 40013 |
11.45 |
| 2026-04-03 00:00 |
08:10:07.89 |
+41:45:47.9 |
HIP 40013 |
7.83 |
| 2026-04-03 12:00 |
08:10:12.34 |
+41:42:15.0 |
HIP 40013 |
4.20 |
| 2026-04-04 00:00 |
08:10:17.10 |
+41:38:41.9 |
HIP 40013 |
0.63 |
| 2026-04-04 12:00 |
08:10:22.14 |
+41:35:08.7 |
HIP 40013 |
3.17 |
| 2026-04-05 00:00 |
08:10:27.48 |
+41:31:35.2 |
HIP 40013 |
6.85 |
| 2026-04-05 12:00 |
08:10:33.11 |
+41:28:01.7 |
HIP 40013 |
10.56 |
| 2026-04-06 00:00 |
08:10:39.03 |
+41:24:27.9 |
HIP 40013 |
14.28 |
| 2026-04-06 12:00 |
08:10:45.24 |
+41:20:54.1 |
HIP 40013 |
18.03 |
| 2026-04-07 00:00 |
08:10:51.73 |
+41:17:20.1 |
HIP 40013 |
21.79 |
| 2026-04-07 12:00 |
08:10:58.50 |
+41:13:45.9 |
HIP 40013 |
25.57 |
| 2026-04-08 00:00 |
08:11:05.55 |
+41:10:11.7 |
HIP 40013 |
29.38 |
| 2026-04-08 12:00 |
08:11:12.88 |
+41:06:37.4 |
HIP 40013 |
33.20 |
| 2026-04-09 00:00 |
08:11:20.48 |
+41:03:03.0 |
HIP 40128 |
31.47 |
| 2026-04-09 12:00 |
08:11:28.36 |
+40:59:28.5 |
HIP 40128 |
27.71 |
| 2026-04-10 00:00 |
08:11:36.50 |
+40:55:53.9 |
HIP 40128 |
23.98 |
| 2026-04-10 12:00 |
08:11:44.92 |
+40:52:19.2 |
HIP 40128 |
20.32 |
| 2026-04-11 00:00 |
08:11:53.60 |
+40:48:44.5 |
HIP 40128 |
16.76 |
| 2026-04-11 12:00 |
08:12:02.55 |
+40:45:09.7 |
HIP 40128 |
13.44 |
| 2026-04-12 00:00 |
08:12:11.76 |
+40:41:34.9 |
HIP 40128 |
10.59 |
| 2026-04-12 12:00 |
08:12:21.23 |
+40:38:00.1 |
HIP 40128 |
8.71 |
| 2026-04-13 00:00 |
08:12:30.96 |
+40:34:25.2 |
HIP 40128 |
8.53 |
| 2026-04-13 12:00 |
08:12:40.95 |
+40:30:50.2 |
HIP 40128 |
10.15 |
| 2026-04-14 00:00 |
08:12:51.19 |
+40:27:15.3 |
HIP 40128 |
12.94 |
| 2026-04-14 12:00 |
08:13:01.68 |
+40:23:40.4 |
HIP 40128 |
16.33 |
| 2026-04-15 00:00 |
08:13:12.43 |
+40:20:05.4 |
HIP 40128 |
20.02 |
| 2026-04-15 12:00 |
08:13:23.42 |
+40:16:30.4 |
HIP 40245 |
17.42 |
| 2026-04-16 00:00 |
08:13:34.66 |
+40:12:55.5 |
HIP 40245 |
14.38 |