| 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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
02:21:11.29 |
+18:57:43.7 |
HIP 11081 |
22.07 |
| 2026-06-03 00:00 |
02:21:24.63 |
+18:58:55.5 |
HIP 11081 |
18.71 |
| 2026-06-03 12:00 |
02:21:37.93 |
+19:00:07.1 |
HIP 11081 |
15.37 |
| 2026-06-04 00:00 |
02:21:51.18 |
+19:01:18.5 |
HIP 11081 |
12.05 |
| 2026-06-04 12:00 |
02:22:04.38 |
+19:02:29.7 |
HIP 11081 |
8.76 |
| 2026-06-05 00:00 |
02:22:17.53 |
+19:03:40.8 |
HIP 11081 |
5.55 |
| 2026-06-05 12:00 |
02:22:30.63 |
+19:04:51.6 |
HIP 11081 |
2.64 |
| 2026-06-06 00:00 |
02:22:43.68 |
+19:06:02.3 |
HIP 11081 |
2.27 |
| 2026-06-06 12:00 |
02:22:56.69 |
+19:07:12.8 |
HIP 11081 |
5.00 |
| 2026-06-07 00:00 |
02:23:09.64 |
+19:08:23.1 |
HIP 11081 |
8.14 |
| 2026-06-07 12:00 |
02:23:22.54 |
+19:09:33.1 |
HIP 11081 |
11.34 |
| 2026-06-08 00:00 |
02:23:35.39 |
+19:10:43.0 |
HIP 11081 |
14.56 |
| 2026-06-08 12:00 |
02:23:48.19 |
+19:11:52.7 |
HIP 11081 |
17.78 |
| 2026-06-09 00:00 |
02:24:00.94 |
+19:13:02.2 |
HIP 11081 |
20.99 |
| 2026-06-09 12:00 |
02:24:13.63 |
+19:14:11.4 |
HIP 11081 |
24.19 |
| 2026-06-10 00:00 |
02:24:26.27 |
+19:15:20.5 |
HIP 11316 |
24.93 |
| 2026-06-10 12:00 |
02:24:38.85 |
+19:16:29.3 |
HIP 11316 |
22.08 |
| 2026-06-11 00:00 |
02:24:51.37 |
+19:17:37.9 |
HIP 11316 |
19.35 |
| 2026-06-11 12:00 |
02:25:03.85 |
+19:18:46.3 |
HIP 11316 |
16.78 |
| 2026-06-12 00:00 |
02:25:16.26 |
+19:19:54.5 |
HIP 11316 |
14.46 |
| 2026-06-12 12:00 |
02:25:28.61 |
+19:21:02.5 |
HIP 11316 |
12.50 |
| 2026-06-13 00:00 |
02:25:40.91 |
+19:22:10.2 |
HIP 11316 |
11.10 |
| 2026-06-13 12:00 |
02:25:53.15 |
+19:23:17.7 |
HIP 11316 |
10.46 |
| 2026-06-14 00:00 |
02:26:05.33 |
+19:24:24.9 |
HIP 11316 |
10.71 |
| 2026-06-14 12:00 |
02:26:17.45 |
+19:25:31.9 |
HIP 11316 |
11.78 |
| 2026-06-15 00:00 |
02:26:29.51 |
+19:26:38.7 |
HIP 11316 |
13.47 |
| 2026-06-15 12:00 |
02:26:41.50 |
+19:27:45.2 |
HIP 11316 |
15.56 |
| 2026-06-16 00:00 |
02:26:53.44 |
+19:28:51.5 |
HIP 11316 |
17.92 |
| 2026-06-16 12:00 |
02:27:05.31 |
+19:29:57.6 |
HIP 11316 |
20.43 |
| 2026-06-17 00:00 |
02:27:17.11 |
+19:31:03.3 |
HIP 11539 |
22.89 |
| 2026-06-17 12:00 |
02:27:28.86 |
+19:32:08.9 |
HIP 11539 |
20.94 |
| 2026-06-18 00:00 |
02:27:40.54 |
+19:33:14.1 |
HIP 11539 |
19.27 |
| 2026-06-18 12:00 |
02:27:52.15 |
+19:34:19.2 |
HIP 11539 |
17.94 |
| 2026-06-19 00:00 |
02:28:03.69 |
+19:35:23.9 |
HIP 11539 |
17.03 |
| 2026-06-19 12:00 |
02:28:15.17 |
+19:36:28.4 |
HIP 11539 |
16.60 |
| 2026-06-20 00:00 |
02:28:26.59 |
+19:37:32.6 |
HIP 11539 |
16.67 |
| 2026-06-20 12:00 |
02:28:37.93 |
+19:38:36.6 |
HIP 11539 |
17.23 |
| 2026-06-21 00:00 |
02:28:49.21 |
+19:39:40.2 |
HIP 11539 |
18.23 |
| 2026-06-21 12:00 |
02:29:00.42 |
+19:40:43.7 |
HIP 11617 |
18.06 |
| 2026-06-22 00:00 |
02:29:11.56 |
+19:41:46.8 |
HIP 11617 |
15.61 |