メタデータ
| 項目 |
値 |
| 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 |
オスキュレーティング軌道要素
| 項目 |
値 |
| 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 |
等級
散乱 + 全体線形
$$
M_a = (10.828 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.828 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.850 |
| k |
1.000 |
| δ90 |
9.999 |
| パラメータ |
記号 |
範囲 |
説明 |
| 太陽・地球距離が1 AUのときの絶対等級 |
H0 |
-5 to 20 |
彗星の固有の明るさ |
| 測光スロープパラメータ |
n |
2 to 6 |
太陽距離に対する明るさ変化率 |
| 前方散乱非対称係数 |
gf |
0.8 to 1 |
前方散乱の強さ |
| 後方散乱非対称係数 |
gb |
-1 to -0.5 |
後方散乱の強さ |
| 分配係数 |
k |
0.8 to 1 |
前方/後方散乱の寄与比 |
| ダスト/ガス明るさ比 |
δ90 |
1 to 10 |
ダスト散乱とガス放射の相対寄与 |
参考: EPSC-DPS2025-160
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
01:47:32.49 |
+16:05:34.0 |
HIP 8414 |
19.42 |
| 2026-03-26 12:00 |
01:47:46.81 |
+16:06:43.2 |
HIP 8414 |
16.13 |
| 2026-03-27 00:00 |
01:48:01.15 |
+16:07:52.8 |
HIP 8414 |
13.02 |
| 2026-03-27 12:00 |
01:48:15.53 |
+16:09:02.5 |
HIP 8414 |
10.25 |
| 2026-03-28 00:00 |
01:48:29.93 |
+16:10:12.5 |
HIP 8414 |
8.20 |
| 2026-03-28 12:00 |
01:48:44.37 |
+16:11:22.7 |
HIP 8414 |
7.47 |
| 2026-03-29 00:00 |
01:48:58.84 |
+16:12:33.2 |
HIP 8414 |
8.45 |
| 2026-03-29 12:00 |
01:49:13.33 |
+16:13:43.8 |
HIP 8448 |
9.99 |
| 2026-03-30 00:00 |
01:49:27.86 |
+16:14:54.7 |
HIP 8448 |
11.12 |
| 2026-03-30 12:00 |
01:49:42.41 |
+16:16:05.9 |
HIP 8448 |
13.22 |
| 2026-03-31 00:00 |
01:49:56.99 |
+16:17:17.2 |
HIP 8448 |
15.91 |
| 2026-03-31 12:00 |
01:50:11.59 |
+16:18:28.7 |
HIP 8448 |
18.95 |
| 2026-04-01 00:00 |
01:50:26.23 |
+16:19:40.5 |
HIP 8667 |
17.79 |
| 2026-04-01 12:00 |
01:50:40.89 |
+16:20:52.4 |
HIP 8667 |
14.09 |
| 2026-04-02 00:00 |
01:50:55.57 |
+16:22:04.5 |
HIP 8667 |
10.40 |
| 2026-04-02 12:00 |
01:51:10.28 |
+16:23:16.9 |
HIP 8667 |
6.74 |
| 2026-04-03 00:00 |
01:51:25.01 |
+16:24:29.4 |
HIP 8667 |
3.22 |
| 2026-04-03 12:00 |
01:51:39.77 |
+16:25:42.2 |
HIP 8667 |
1.81 |
| 2026-04-04 00:00 |
01:51:54.55 |
+16:26:55.1 |
HIP 8667 |
4.92 |
| 2026-04-04 12:00 |
01:52:09.35 |
+16:28:08.2 |
HIP 8667 |
8.56 |
| 2026-04-05 00:00 |
01:52:24.18 |
+16:29:21.4 |
HIP 8667 |
12.28 |
| 2026-04-05 12:00 |
01:52:39.02 |
+16:30:34.9 |
HIP 8667 |
16.02 |
| 2026-04-06 00:00 |
01:52:53.89 |
+16:31:48.5 |
HIP 8667 |
19.77 |
| 2026-04-06 12:00 |
01:53:08.78 |
+16:33:02.3 |
HIP 8667 |
23.54 |
| 2026-04-07 00:00 |
01:53:23.68 |
+16:34:16.3 |
HIP 8667 |
27.31 |
| 2026-04-07 12:00 |
01:53:38.61 |
+16:35:30.4 |
HIP 8816 |
28.84 |
| 2026-04-08 00:00 |
01:53:53.55 |
+16:36:44.7 |
HIP 8816 |
28.41 |
| 2026-04-08 12:00 |
01:54:08.52 |
+16:37:59.1 |
HIP 8816 |
28.48 |
| 2026-04-09 00:00 |
01:54:23.50 |
+16:39:13.7 |
HIP 8816 |
29.05 |
| 2026-04-09 12:00 |
01:54:38.50 |
+16:40:28.5 |
HIP 8816 |
30.09 |
| 2026-04-10 00:00 |
01:54:53.51 |
+16:41:43.4 |
HIP 8968 |
30.98 |
| 2026-04-10 12:00 |
01:55:08.54 |
+16:42:58.4 |
HIP 8968 |
28.90 |
| 2026-04-11 00:00 |
01:55:23.59 |
+16:44:13.6 |
HIP 8968 |
27.20 |
| 2026-04-11 12:00 |
01:55:38.65 |
+16:45:28.9 |
HIP 8968 |
25.94 |
| 2026-04-12 00:00 |
01:55:53.73 |
+16:46:44.3 |
HIP 8968 |
25.21 |
| 2026-04-12 12:00 |
01:56:08.81 |
+16:48:00.0 |
HIP 8968 |
25.04 |
| 2026-04-13 00:00 |
01:56:23.92 |
+16:49:15.6 |
HIP 8968 |
25.45 |
| 2026-04-13 12:00 |
01:56:39.03 |
+16:50:31.4 |
HIP 8968 |
26.41 |
| 2026-04-14 00:00 |
01:56:54.16 |
+16:51:47.4 |
HIP 8968 |
27.87 |
| 2026-04-14 12:00 |
01:57:09.29 |
+16:53:03.4 |
HIP 9240 |
24.96 |
| 2026-04-15 00:00 |
01:57:24.44 |
+16:54:19.6 |
HIP 9240 |
21.12 |
| 2026-04-15 12:00 |
01:57:39.60 |
+16:55:35.9 |
HIP 9240 |
17.28 |
| 2026-04-16 00:00 |
01:57:54.77 |
+16:56:52.3 |
HIP 9240 |
13.43 |