| Parameter |
Value |
| Designation |
418P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-04-19T02:07:15.358080Z |
| Orbit solution date (soln_date, UTC) |
2022-10-07T00:44:00Z |
| Obs used |
775 |
| NEO |
- |
| M1 |
13.900 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-12-23T11:39:09.792000Z |
| Discovery magnitude (MPC) |
21.70 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-02-05.0000000 |
| e |
0.66371734 |
| q (au) |
1.715751 |
| a (au) |
5.102109 |
| i (deg) |
5.780390 |
| Ω (om, deg) |
277.862905 |
| ω (w, deg) |
306.887500 |
| M (ma, deg) |
56.180600 |
Magnitude
Scatter + Global Linear
$$
M_a = (10.828 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
10.828 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.850 |
| k |
1.000 |
| δ90 |
9.999 |
| 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) |
| 2026-05-12 00:00 |
02:11:01.30 |
+18:04:01.4 |
HIP 10295 |
22.51 |
| 2026-05-12 12:00 |
02:11:16.12 |
+18:05:18.5 |
HIP 10295 |
19.24 |
| 2026-05-13 00:00 |
02:11:30.91 |
+18:06:35.6 |
HIP 10295 |
16.19 |
| 2026-05-13 12:00 |
02:11:45.69 |
+18:07:52.6 |
HIP 10295 |
13.50 |
| 2026-05-14 00:00 |
02:12:00.44 |
+18:09:09.6 |
HIP 10295 |
11.41 |
| 2026-05-14 12:00 |
02:12:15.17 |
+18:10:26.5 |
HIP 10295 |
10.30 |
| 2026-05-15 00:00 |
02:12:29.87 |
+18:11:43.3 |
HIP 10295 |
10.48 |
| 2026-05-15 12:00 |
02:12:44.55 |
+18:13:00.0 |
HIP 10295 |
11.88 |
| 2026-05-16 00:00 |
02:12:59.21 |
+18:14:16.6 |
HIP 10295 |
14.14 |
| 2026-05-16 12:00 |
02:13:13.84 |
+18:15:33.2 |
HIP 10295 |
16.92 |
| 2026-05-17 00:00 |
02:13:28.44 |
+18:16:49.6 |
HIP 10295 |
19.99 |
| 2026-05-17 12:00 |
02:13:43.01 |
+18:18:06.0 |
HIP 10295 |
23.24 |
| 2026-05-18 00:00 |
02:13:57.56 |
+18:19:22.3 |
HIP 10295 |
26.59 |
| 2026-05-18 12:00 |
02:14:12.07 |
+18:20:38.4 |
HIP 10295 |
30.02 |
| 2026-05-19 00:00 |
02:14:26.56 |
+18:21:54.5 |
HIP 10496 |
31.26 |
| 2026-05-19 12:00 |
02:14:41.02 |
+18:23:10.5 |
HIP 10496 |
28.83 |
| 2026-05-20 00:00 |
02:14:55.44 |
+18:24:26.3 |
HIP 10496 |
26.69 |
| 2026-05-20 12:00 |
02:15:09.84 |
+18:25:42.0 |
HIP 10496 |
24.90 |
| 2026-05-21 00:00 |
02:15:24.20 |
+18:26:57.7 |
HIP 10496 |
23.54 |
| 2026-05-21 12:00 |
02:15:38.53 |
+18:28:13.2 |
HIP 10496 |
22.69 |
| 2026-05-22 00:00 |
02:15:52.83 |
+18:29:28.6 |
HIP 10496 |
22.39 |
| 2026-05-22 12:00 |
02:16:07.09 |
+18:30:43.8 |
HIP 10496 |
22.67 |
| 2026-05-23 00:00 |
02:16:21.32 |
+18:31:59.0 |
HIP 10701 |
20.47 |
| 2026-05-23 12:00 |
02:16:35.52 |
+18:33:14.0 |
HIP 10701 |
17.59 |
| 2026-05-24 00:00 |
02:16:49.68 |
+18:34:28.9 |
HIP 10701 |
15.03 |
| 2026-05-24 12:00 |
02:17:03.80 |
+18:35:43.6 |
HIP 10701 |
12.97 |
| 2026-05-25 00:00 |
02:17:17.89 |
+18:36:58.2 |
HIP 10701 |
11.66 |
| 2026-05-25 12:00 |
02:17:31.94 |
+18:38:12.7 |
HIP 10701 |
11.37 |
| 2026-05-26 00:00 |
02:17:45.95 |
+18:39:27.0 |
HIP 10701 |
12.15 |
| 2026-05-26 12:00 |
02:17:59.93 |
+18:40:41.2 |
HIP 10701 |
13.83 |
| 2026-05-27 00:00 |
02:18:13.86 |
+18:41:55.3 |
HIP 10701 |
16.11 |
| 2026-05-27 12:00 |
02:18:27.76 |
+18:43:09.2 |
HIP 10701 |
18.77 |
| 2026-05-28 00:00 |
02:18:41.62 |
+18:44:22.9 |
HIP 10701 |
21.67 |
| 2026-05-28 12:00 |
02:18:55.43 |
+18:45:36.5 |
HIP 10701 |
24.72 |
| 2026-05-29 00:00 |
02:19:09.21 |
+18:46:50.0 |
HIP 10701 |
27.86 |
| 2026-05-29 12:00 |
02:19:22.95 |
+18:48:03.2 |
HIP 10955 |
27.83 |
| 2026-05-30 00:00 |
02:19:36.64 |
+18:49:16.4 |
HIP 10955 |
25.66 |
| 2026-05-30 12:00 |
02:19:50.29 |
+18:50:29.3 |
HIP 10955 |
23.80 |
| 2026-05-31 00:00 |
02:20:03.90 |
+18:51:42.2 |
HIP 10955 |
22.34 |
| 2026-05-31 12:00 |
02:20:17.47 |
+18:52:54.8 |
HIP 10955 |
21.33 |
| 2026-06-01 00:00 |
02:20:30.99 |
+18:54:07.3 |
HIP 10955 |
20.86 |
| 2026-06-01 12:00 |
02:20:44.47 |
+18:55:19.6 |
HIP 10955 |
20.94 |
| 2026-06-02 00:00 |
02:20:57.90 |
+18:56:31.7 |
HIP 10955 |
21.56 |