メタデータ
| 項目 |
値 |
| Designation |
C/2024 O1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-01-29T05:12:09.480960Z |
| Orbit solution date (soln_date, UTC) |
2024-08-11T00:12:19Z |
| Obs used |
37 |
| NEO |
- |
| M1 |
13.300 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-07-28T09:31:08.832000Z |
| Discovery magnitude (MPC) |
21.04 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2024-03-10.0000000 |
| e |
1.00181627 |
| q (au) |
6.608493 |
| a (au) |
-3638.502297 |
| i (deg) |
59.066490 |
| Ω (om, deg) |
303.331127 |
| ω (w, deg) |
349.939425 |
| M (ma, deg) |
0.001822 |
等級
散乱 + 全体線形
$$
M_a = (18.575 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
18.575 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.890 |
| k |
0.800 |
| 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) |
| 2026-09-20 00:00 |
21:36:14.86 |
+47:13:40.6 |
HIP 106571 |
15.12 |
| 2026-09-20 12:00 |
21:36:04.05 |
+47:12:41.3 |
HIP 106571 |
13.05 |
| 2026-09-21 00:00 |
21:35:53.33 |
+47:11:41.1 |
HIP 106571 |
10.98 |
| 2026-09-21 12:00 |
21:35:42.71 |
+47:10:40.0 |
HIP 106571 |
8.92 |
| 2026-09-22 00:00 |
21:35:32.18 |
+47:09:37.9 |
HIP 106571 |
6.87 |
| 2026-09-22 12:00 |
21:35:21.76 |
+47:08:34.9 |
HIP 106571 |
4.83 |
| 2026-09-23 00:00 |
21:35:11.42 |
+47:07:31.0 |
HIP 106571 |
2.83 |
| 2026-09-23 12:00 |
21:35:01.19 |
+47:06:26.2 |
HIP 106571 |
1.05 |
| 2026-09-24 00:00 |
21:34:51.06 |
+47:05:20.5 |
HIP 106571 |
1.59 |
| 2026-09-24 12:00 |
21:34:41.03 |
+47:04:13.9 |
HIP 106571 |
3.50 |
| 2026-09-25 00:00 |
21:34:31.10 |
+47:03:06.4 |
HIP 106571 |
5.49 |
| 2026-09-25 12:00 |
21:34:21.27 |
+47:01:58.1 |
HIP 106571 |
7.50 |
| 2026-09-26 00:00 |
21:34:11.55 |
+47:00:49.0 |
HIP 106571 |
9.50 |
| 2026-09-26 12:00 |
21:34:01.93 |
+46:59:39.0 |
HIP 106571 |
11.50 |
| 2026-09-27 00:00 |
21:33:52.42 |
+46:58:28.2 |
HIP 106571 |
13.50 |
| 2026-09-27 12:00 |
21:33:43.01 |
+46:57:16.6 |
HIP 106571 |
15.49 |
| 2026-09-28 00:00 |
21:33:33.71 |
+46:56:04.2 |
HIP 106571 |
17.48 |
| 2026-09-28 12:00 |
21:33:24.51 |
+46:54:51.1 |
HIP 106571 |
19.46 |
| 2026-09-29 00:00 |
21:33:15.43 |
+46:53:37.1 |
HIP 106571 |
21.43 |
| 2026-09-29 12:00 |
21:33:06.45 |
+46:52:22.4 |
HIP 106571 |
23.40 |
| 2026-09-30 00:00 |
21:32:57.59 |
+46:51:06.9 |
HIP 106571 |
25.36 |
| 2026-09-30 12:00 |
21:32:48.83 |
+46:49:50.7 |
HIP 106571 |
27.31 |
| 2026-10-01 00:00 |
21:32:40.19 |
+46:48:33.7 |
HIP 106187 |
27.72 |
| 2026-10-01 12:00 |
21:32:31.66 |
+46:47:16.1 |
HIP 106187 |
25.78 |
| 2026-10-02 00:00 |
21:32:23.24 |
+46:45:57.7 |
HIP 106187 |
23.85 |
| 2026-10-02 12:00 |
21:32:14.94 |
+46:44:38.6 |
HIP 106187 |
21.93 |
| 2026-10-03 00:00 |
21:32:06.75 |
+46:43:18.9 |
HIP 106187 |
20.02 |
| 2026-10-03 12:00 |
21:31:58.68 |
+46:41:58.5 |
HIP 106187 |
18.13 |
| 2026-10-04 00:00 |
21:31:50.72 |
+46:40:37.4 |
HIP 106187 |
16.26 |
| 2026-10-04 12:00 |
21:31:42.88 |
+46:39:15.7 |
HIP 106187 |
14.41 |
| 2026-10-05 00:00 |
21:31:35.16 |
+46:37:53.3 |
HIP 106187 |
12.59 |
| 2026-10-05 12:00 |
21:31:27.56 |
+46:36:30.3 |
HIP 106187 |
10.82 |
| 2026-10-06 00:00 |
21:31:20.08 |
+46:35:06.8 |
HIP 106187 |
9.11 |
| 2026-10-06 12:00 |
21:31:12.71 |
+46:33:42.6 |
HIP 106187 |
7.52 |
| 2026-10-07 00:00 |
21:31:05.47 |
+46:32:17.8 |
HIP 106187 |
6.11 |
| 2026-10-07 12:00 |
21:30:58.35 |
+46:30:52.5 |
HIP 106187 |
5.05 |
| 2026-10-08 00:00 |
21:30:51.35 |
+46:29:26.6 |
HIP 106187 |
4.57 |
| 2026-10-08 12:00 |
21:30:44.48 |
+46:28:00.2 |
HIP 106187 |
4.84 |
| 2026-10-09 00:00 |
21:30:37.73 |
+46:26:33.2 |
HIP 106187 |
5.75 |
| 2026-10-09 12:00 |
21:30:31.10 |
+46:25:05.8 |
HIP 106187 |
7.06 |
| 2026-10-10 00:00 |
21:30:24.60 |
+46:23:37.8 |
HIP 106108 |
8.48 |
| 2026-10-10 12:00 |
21:30:18.22 |
+46:22:09.4 |
HIP 106108 |
7.94 |
| 2026-10-11 00:00 |
21:30:11.97 |
+46:20:40.4 |
HIP 106108 |
7.82 |