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) |
| 2026-07-29 00:00 |
21:59:25.15 |
+47:01:53.1 |
HIP 108424 |
18.88 |
| 2026-07-29 12:00 |
21:59:12.62 |
+47:03:10.9 |
HIP 108424 |
17.90 |
| 2026-07-30 00:00 |
21:59:00.04 |
+47:04:27.4 |
HIP 108424 |
17.20 |
| 2026-07-30 12:00 |
21:58:47.39 |
+47:05:42.5 |
HIP 108424 |
16.82 |
| 2026-07-31 00:00 |
21:58:34.68 |
+47:06:56.3 |
HIP 108424 |
16.79 |
| 2026-07-31 12:00 |
21:58:21.91 |
+47:08:08.8 |
HIP 108424 |
17.09 |
| 2026-08-01 00:00 |
21:58:09.08 |
+47:09:19.9 |
HIP 108393 |
16.95 |
| 2026-08-01 12:00 |
21:57:56.20 |
+47:10:29.7 |
HIP 108393 |
15.24 |
| 2026-08-02 00:00 |
21:57:43.26 |
+47:11:38.1 |
HIP 108393 |
13.78 |
| 2026-08-02 12:00 |
21:57:30.27 |
+47:12:45.1 |
HIP 108393 |
12.67 |
| 2026-08-03 00:00 |
21:57:17.22 |
+47:13:50.8 |
HIP 108393 |
12.00 |
| 2026-08-03 12:00 |
21:57:04.12 |
+47:14:55.2 |
HIP 108393 |
11.84 |
| 2026-08-04 00:00 |
21:56:50.98 |
+47:15:58.1 |
HIP 108393 |
12.21 |
| 2026-08-04 12:00 |
21:56:37.78 |
+47:16:59.7 |
HIP 108393 |
13.06 |
| 2026-08-05 00:00 |
21:56:24.54 |
+47:18:00.0 |
HIP 108393 |
14.31 |
| 2026-08-05 12:00 |
21:56:11.25 |
+47:18:58.8 |
HIP 108197 |
12.82 |
| 2026-08-06 00:00 |
21:55:57.92 |
+47:19:56.2 |
HIP 108197 |
10.49 |
| 2026-08-06 12:00 |
21:55:44.54 |
+47:20:52.3 |
HIP 108197 |
8.23 |
| 2026-08-07 00:00 |
21:55:31.13 |
+47:21:47.0 |
HIP 108197 |
6.14 |
| 2026-08-07 12:00 |
21:55:17.67 |
+47:22:40.3 |
HIP 108197 |
4.46 |
| 2026-08-08 00:00 |
21:55:04.17 |
+47:23:32.2 |
HIP 108197 |
3.76 |
| 2026-08-08 12:00 |
21:54:50.64 |
+47:24:22.7 |
HIP 108197 |
4.52 |
| 2026-08-09 00:00 |
21:54:37.07 |
+47:25:11.8 |
HIP 108197 |
6.23 |
| 2026-08-09 12:00 |
21:54:23.47 |
+47:25:59.4 |
HIP 108197 |
8.32 |
| 2026-08-10 00:00 |
21:54:09.83 |
+47:26:45.7 |
HIP 108197 |
10.56 |
| 2026-08-10 12:00 |
21:53:56.17 |
+47:27:30.6 |
HIP 108197 |
12.88 |
| 2026-08-11 00:00 |
21:53:42.47 |
+47:28:14.1 |
HIP 108197 |
15.23 |
| 2026-08-11 12:00 |
21:53:28.75 |
+47:28:56.1 |
HIP 108197 |
17.60 |
| 2026-08-12 00:00 |
21:53:15.00 |
+47:29:36.8 |
HIP 107983 |
17.33 |
| 2026-08-12 12:00 |
21:53:01.23 |
+47:30:16.0 |
HIP 107983 |
17.17 |
| 2026-08-13 00:00 |
21:52:47.43 |
+47:30:53.8 |
HIP 107983 |
17.32 |
| 2026-08-13 12:00 |
21:52:33.62 |
+47:31:30.2 |
HIP 107983 |
17.78 |
| 2026-08-14 00:00 |
21:52:19.78 |
+47:32:05.2 |
HIP 107983 |
18.52 |
| 2026-08-14 12:00 |
21:52:05.93 |
+47:32:38.8 |
HIP 107983 |
19.51 |
| 2026-08-15 00:00 |
21:51:52.06 |
+47:33:10.9 |
HIP 107983 |
20.72 |
| 2026-08-15 12:00 |
21:51:38.18 |
+47:33:41.7 |
HIP 107983 |
22.10 |
| 2026-08-16 00:00 |
21:51:24.28 |
+47:34:11.0 |
HIP 107983 |
23.62 |
| 2026-08-16 12:00 |
21:51:10.38 |
+47:34:39.0 |
HIP 107852 |
24.00 |
| 2026-08-17 00:00 |
21:50:56.46 |
+47:35:05.5 |
HIP 107852 |
24.44 |
| 2026-08-17 12:00 |
21:50:42.54 |
+47:35:30.6 |
HIP 107852 |
25.09 |
| 2026-08-18 00:00 |
21:50:28.61 |
+47:35:54.4 |
HIP 107852 |
25.92 |
| 2026-08-18 12:00 |
21:50:14.68 |
+47:36:16.7 |
HIP 107852 |
26.92 |
| 2026-08-19 00:00 |
21:50:00.74 |
+47:36:37.6 |
HIP 107852 |
28.06 |