メタデータ
| 項目 |
値 |
| Designation |
443P/PANSTARRS-Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-10-09T17:10:55.254720Z |
| Orbit solution date (soln_date, UTC) |
2024-10-05T23:12:49Z |
| Obs used |
211 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
17.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2005-07-05T04:57:05.184000Z |
| Discovery magnitude (MPC) |
21.40 V |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2021-03-07.0000000 |
| e |
0.28450671 |
| q (au) |
2.956436 |
| a (au) |
4.132025 |
| i (deg) |
19.886402 |
| Ω (om, deg) |
108.960336 |
| ω (w, deg) |
145.019106 |
| M (ma, deg) |
291.739315 |
等級
散乱 + 全体線形
$$
M_a = (9.776 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.776 |
| n |
6.000 |
| gf |
0.952 |
| gb |
-0.835 |
| k |
0.999 |
| δ90 |
8.351 |
| 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 |
03:22:10.47 |
+03:57:34.4 |
HIP 15687 |
15.12 |
| 2026-03-26 12:00 |
03:22:30.46 |
+04:00:09.7 |
HIP 15687 |
13.99 |
| 2026-03-27 00:00 |
03:22:50.54 |
+04:02:44.7 |
HIP 15687 |
15.05 |
| 2026-03-27 12:00 |
03:23:10.70 |
+04:05:19.4 |
HIP 15687 |
17.93 |
| 2026-03-28 00:00 |
03:23:30.95 |
+04:07:53.8 |
HIP 15872 |
21.26 |
| 2026-03-28 12:00 |
03:23:51.28 |
+04:10:27.9 |
HIP 15872 |
20.61 |
| 2026-03-29 00:00 |
03:24:11.69 |
+04:13:01.6 |
HIP 15872 |
21.49 |
| 2026-03-29 12:00 |
03:24:32.18 |
+04:15:34.9 |
HIP 15872 |
23.74 |
| 2026-03-30 00:00 |
03:24:52.76 |
+04:18:08.0 |
HIP 15872 |
27.03 |
| 2026-03-30 12:00 |
03:25:13.41 |
+04:20:40.6 |
HIP 15872 |
31.04 |
| 2026-03-31 00:00 |
03:25:34.14 |
+04:23:13.0 |
HIP 15938 |
29.66 |
| 2026-03-31 12:00 |
03:25:54.95 |
+04:25:44.9 |
HIP 15938 |
28.61 |
| 2026-04-01 00:00 |
03:26:15.84 |
+04:28:16.6 |
HIP 15938 |
28.72 |
| 2026-04-01 12:00 |
03:26:36.81 |
+04:30:47.8 |
HIP 15938 |
29.99 |
| 2026-04-02 00:00 |
03:26:57.85 |
+04:33:18.7 |
HIP 16122 |
28.10 |
| 2026-04-02 12:00 |
03:27:18.97 |
+04:35:49.2 |
HIP 16122 |
24.12 |
| 2026-04-03 00:00 |
03:27:40.16 |
+04:38:19.4 |
HIP 16122 |
21.04 |
| 2026-04-03 12:00 |
03:28:01.42 |
+04:40:49.2 |
HIP 16122 |
19.29 |
| 2026-04-04 00:00 |
03:28:22.76 |
+04:43:18.6 |
HIP 16122 |
19.25 |
| 2026-04-04 12:00 |
03:28:44.18 |
+04:45:47.6 |
HIP 16122 |
20.95 |
| 2026-04-05 00:00 |
03:29:05.66 |
+04:48:16.3 |
HIP 16219 |
20.36 |
| 2026-04-05 12:00 |
03:29:27.22 |
+04:50:44.5 |
HIP 16219 |
19.29 |
| 2026-04-06 00:00 |
03:29:48.84 |
+04:53:12.4 |
HIP 16219 |
20.01 |
| 2026-04-06 12:00 |
03:30:10.54 |
+04:55:39.9 |
HIP 16363 |
16.36 |
| 2026-04-07 00:00 |
03:30:32.31 |
+04:58:07.0 |
HIP 16363 |
11.69 |
| 2026-04-07 12:00 |
03:30:54.14 |
+05:00:33.7 |
HIP 16363 |
8.75 |
| 2026-04-08 00:00 |
03:31:16.04 |
+05:03:00.0 |
HIP 16363 |
9.37 |
| 2026-04-08 12:00 |
03:31:38.01 |
+05:05:25.8 |
HIP 16363 |
13.08 |
| 2026-04-09 00:00 |
03:32:00.05 |
+05:07:51.3 |
HIP 16530 |
14.71 |
| 2026-04-09 12:00 |
03:32:22.15 |
+05:10:16.3 |
HIP 16530 |
8.77 |
| 2026-04-10 00:00 |
03:32:44.32 |
+05:12:41.0 |
HIP 16530 |
3.09 |
| 2026-04-10 12:00 |
03:33:06.56 |
+05:15:05.2 |
HIP 16530 |
3.86 |
| 2026-04-11 00:00 |
03:33:28.85 |
+05:17:29.0 |
HIP 16530 |
9.66 |
| 2026-04-11 12:00 |
03:33:51.22 |
+05:19:52.4 |
HIP 16530 |
15.66 |
| 2026-04-12 00:00 |
03:34:13.64 |
+05:22:15.3 |
HIP 16530 |
21.71 |
| 2026-04-12 12:00 |
03:34:36.12 |
+05:24:37.8 |
HIP 16723 |
20.09 |
| 2026-04-13 00:00 |
03:34:58.67 |
+05:26:59.9 |
HIP 16723 |
16.10 |
| 2026-04-13 12:00 |
03:35:21.28 |
+05:29:21.5 |
HIP 16723 |
13.77 |
| 2026-04-14 00:00 |
03:35:43.95 |
+05:31:42.7 |
HIP 16739 |
13.32 |
| 2026-04-14 12:00 |
03:36:06.67 |
+05:34:03.4 |
HIP 16739 |
15.14 |
| 2026-04-15 00:00 |
03:36:29.46 |
+05:36:23.7 |
HIP 16739 |
18.88 |
| 2026-04-15 12:00 |
03:36:52.30 |
+05:38:43.5 |
HIP 16930 |
14.97 |
| 2026-04-16 00:00 |
03:37:15.20 |
+05:41:02.9 |
HIP 16930 |
9.63 |