41P/Tuttle-Giacobini-Kresak
メタデータ
| 項目 |
値 |
| Designation |
41P/Tuttle-Giacobini-Kresak |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-04-12T18:04:18.526080Z |
| Orbit solution date (soln_date, UTC) |
2023-09-29T16:16:14Z |
| Obs used |
4300 |
| NEO |
Yes |
| M1 |
16.900 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2017-04-14.0000000 |
| e |
0.66127330 |
| q (au) |
1.045043 |
| a (au) |
3.085209 |
| i (deg) |
9.228466 |
| Ω (om, deg) |
141.058972 |
| ω (w, deg) |
62.166743 |
| M (ma, deg) |
0.226802 |
等級
散乱 + 全体線形
$$
M_a = (11.530 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.530 |
| n |
6.000 |
| gf |
0.995 |
| gb |
-0.863 |
| k |
0.997 |
| δ90 |
10.000 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
01:43:25.62 |
+01:36:37.8 |
HIP 8077 |
10.81 |
| 2026-02-03 12:00 |
01:43:36.91 |
+01:38:29.4 |
HIP 8077 |
11.74 |
| 2026-02-04 00:00 |
01:43:48.36 |
+01:40:21.5 |
HIP 8077 |
13.48 |
| 2026-02-04 12:00 |
01:43:59.95 |
+01:42:14.2 |
HIP 8077 |
15.80 |
| 2026-02-05 00:00 |
01:44:11.69 |
+01:44:07.4 |
HIP 8077 |
18.50 |
| 2026-02-05 12:00 |
01:44:23.58 |
+01:46:01.3 |
HIP 8077 |
21.46 |
| 2026-02-06 00:00 |
01:44:35.62 |
+01:47:55.7 |
HIP 8077 |
24.59 |
| 2026-02-06 12:00 |
01:44:47.80 |
+01:49:50.6 |
HIP 8077 |
27.86 |
| 2026-02-07 00:00 |
01:45:00.13 |
+01:51:46.1 |
HIP 8077 |
31.22 |
| 2026-02-07 12:00 |
01:45:12.60 |
+01:53:42.2 |
HIP 8077 |
34.67 |
| 2026-02-08 00:00 |
01:45:25.22 |
+01:55:38.7 |
HIP 8173 |
34.91 |
| 2026-02-08 12:00 |
01:45:37.98 |
+01:57:35.8 |
HIP 8173 |
33.62 |
| 2026-02-09 00:00 |
01:45:50.89 |
+01:59:33.5 |
HIP 8173 |
32.71 |
| 2026-02-09 12:00 |
01:46:03.93 |
+02:01:31.6 |
HIP 8173 |
32.23 |
| 2026-02-10 00:00 |
01:46:17.12 |
+02:03:30.2 |
HIP 8173 |
32.20 |
| 2026-02-10 12:00 |
01:46:30.45 |
+02:05:29.4 |
HIP 8173 |
32.65 |
| 2026-02-11 00:00 |
01:46:43.91 |
+02:07:29.0 |
HIP 8173 |
33.56 |
| 2026-02-11 12:00 |
01:46:57.52 |
+02:09:29.1 |
HIP 8173 |
34.92 |
| 2026-02-12 00:00 |
01:47:11.26 |
+02:11:29.7 |
HIP 8392 |
34.99 |
| 2026-02-12 12:00 |
01:47:25.14 |
+02:13:30.8 |
HIP 8392 |
31.70 |
| 2026-02-13 00:00 |
01:47:39.15 |
+02:15:32.3 |
HIP 8392 |
28.57 |
| 2026-02-13 12:00 |
01:47:53.30 |
+02:17:34.3 |
HIP 8392 |
25.68 |
| 2026-02-14 00:00 |
01:48:07.58 |
+02:19:36.7 |
HIP 8392 |
23.14 |
| 2026-02-14 12:00 |
01:48:22.00 |
+02:21:39.6 |
HIP 8392 |
21.10 |
| 2026-02-15 00:00 |
01:48:36.55 |
+02:23:42.9 |
HIP 8392 |
19.74 |
| 2026-02-15 12:00 |
01:48:51.23 |
+02:25:46.6 |
HIP 8392 |
19.21 |
| 2026-02-16 00:00 |
01:49:06.04 |
+02:27:50.8 |
HIP 8392 |
19.60 |
| 2026-02-16 12:00 |
01:49:20.98 |
+02:29:55.3 |
HIP 8392 |
20.89 |
| 2026-02-17 00:00 |
01:49:36.05 |
+02:32:00.3 |
HIP 8392 |
22.94 |
| 2026-02-17 12:00 |
01:49:51.25 |
+02:34:05.6 |
HIP 8392 |
25.58 |
| 2026-02-18 00:00 |
01:50:06.57 |
+02:36:11.3 |
HIP 8651 |
21.96 |
| 2026-02-18 12:00 |
01:50:22.02 |
+02:38:17.5 |
HIP 8651 |
17.62 |
| 2026-02-19 00:00 |
01:50:37.59 |
+02:40:23.9 |
HIP 8651 |
13.29 |
| 2026-02-19 12:00 |
01:50:53.29 |
+02:42:30.8 |
HIP 8651 |
9.01 |
| 2026-02-20 00:00 |
01:51:09.11 |
+02:44:38.0 |
HIP 8651 |
5.03 |
| 2026-02-20 12:00 |
01:51:25.06 |
+02:46:45.5 |
HIP 8651 |
3.10 |
| 2026-02-21 00:00 |
01:51:41.12 |
+02:48:53.4 |
HIP 8651 |
5.90 |
| 2026-02-21 12:00 |
01:51:57.30 |
+02:51:01.7 |
HIP 8651 |
10.09 |
| 2026-02-22 00:00 |
01:52:13.61 |
+02:53:10.2 |
HIP 8651 |
14.54 |
| 2026-02-22 12:00 |
01:52:30.03 |
+02:55:19.1 |
HIP 8651 |
19.09 |
| 2026-02-23 00:00 |
01:52:46.57 |
+02:57:28.2 |
HIP 8833 |
18.06 |
| 2026-02-23 12:00 |
01:53:03.22 |
+02:59:37.7 |
HIP 8833 |
13.84 |
| 2026-02-24 00:00 |
01:53:19.99 |
+03:01:47.5 |
HIP 8833 |
10.03 |