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) |
| 2026-03-26 00:00 |
21:57:21.11 |
+35:41:25.1 |
HIP 108366 |
20.52 |
| 2026-03-26 12:00 |
21:57:33.29 |
+35:44:09.7 |
HIP 108366 |
23.56 |
| 2026-03-27 00:00 |
21:57:45.40 |
+35:46:54.8 |
HIP 108330 |
23.72 |
| 2026-03-27 12:00 |
21:57:57.46 |
+35:49:40.4 |
HIP 108330 |
22.63 |
| 2026-03-28 00:00 |
21:58:09.46 |
+35:52:26.6 |
HIP 108330 |
22.08 |
| 2026-03-28 12:00 |
21:58:21.41 |
+35:55:13.3 |
HIP 108330 |
22.12 |
| 2026-03-29 00:00 |
21:58:33.29 |
+35:58:00.6 |
HIP 108330 |
22.76 |
| 2026-03-29 12:00 |
21:58:45.12 |
+36:00:48.3 |
HIP 108330 |
23.93 |
| 2026-03-30 00:00 |
21:58:56.88 |
+36:03:36.6 |
HIP 108330 |
25.56 |
| 2026-03-30 12:00 |
21:59:08.59 |
+36:06:25.4 |
HIP 108683 |
24.31 |
| 2026-03-31 00:00 |
21:59:20.23 |
+36:09:14.7 |
HIP 108683 |
23.37 |
| 2026-03-31 12:00 |
21:59:31.82 |
+36:12:04.5 |
HIP 108683 |
23.00 |
| 2026-04-01 00:00 |
21:59:43.34 |
+36:14:54.8 |
HIP 108713 |
22.29 |
| 2026-04-01 12:00 |
21:59:54.80 |
+36:17:45.6 |
HIP 108713 |
18.92 |
| 2026-04-02 00:00 |
22:00:06.19 |
+36:20:36.8 |
HIP 108713 |
15.69 |
| 2026-04-02 12:00 |
22:00:17.52 |
+36:23:28.6 |
HIP 108713 |
12.71 |
| 2026-04-03 00:00 |
22:00:28.79 |
+36:26:20.8 |
HIP 108713 |
10.20 |
| 2026-04-03 12:00 |
22:00:39.99 |
+36:29:13.5 |
HIP 108713 |
8.57 |
| 2026-04-04 00:00 |
22:00:51.13 |
+36:32:06.7 |
HIP 108713 |
8.37 |
| 2026-04-04 12:00 |
22:01:02.21 |
+36:35:00.3 |
HIP 108713 |
9.67 |
| 2026-04-05 00:00 |
22:01:13.21 |
+36:37:54.4 |
HIP 108713 |
12.00 |
| 2026-04-05 12:00 |
22:01:24.15 |
+36:40:48.9 |
HIP 108713 |
14.87 |
| 2026-04-06 00:00 |
22:01:35.02 |
+36:43:43.9 |
HIP 108763 |
13.65 |
| 2026-04-06 12:00 |
22:01:45.83 |
+36:46:39.3 |
HIP 108763 |
10.28 |
| 2026-04-07 00:00 |
22:01:56.56 |
+36:49:35.2 |
HIP 108763 |
7.16 |
| 2026-04-07 12:00 |
22:02:07.23 |
+36:52:31.5 |
HIP 108763 |
4.81 |
| 2026-04-08 00:00 |
22:02:17.82 |
+36:55:28.2 |
HIP 108789 |
3.52 |
| 2026-04-08 12:00 |
22:02:28.35 |
+36:58:25.3 |
HIP 108789 |
2.53 |
| 2026-04-09 00:00 |
22:02:38.80 |
+37:01:22.9 |
HIP 108789 |
5.15 |
| 2026-04-09 12:00 |
22:02:49.19 |
+37:04:20.8 |
HIP 108789 |
8.53 |
| 2026-04-10 00:00 |
22:02:59.50 |
+37:07:19.2 |
HIP 108789 |
12.04 |
| 2026-04-10 12:00 |
22:03:09.73 |
+37:10:17.9 |
HIP 108789 |
15.59 |
| 2026-04-11 00:00 |
22:03:19.90 |
+37:13:17.1 |
HIP 108789 |
19.16 |
| 2026-04-11 12:00 |
22:03:29.99 |
+37:16:16.6 |
HIP 108789 |
22.74 |
| 2026-04-12 00:00 |
22:03:40.01 |
+37:19:16.5 |
HIP 108830 |
23.06 |
| 2026-04-12 12:00 |
22:03:49.95 |
+37:22:16.8 |
HIP 108881 |
20.83 |
| 2026-04-13 00:00 |
22:03:59.81 |
+37:25:17.5 |
HIP 108881 |
18.63 |
| 2026-04-13 12:00 |
22:04:09.60 |
+37:28:18.5 |
HIP 108881 |
16.91 |
| 2026-04-14 00:00 |
22:04:19.31 |
+37:31:19.9 |
HIP 108881 |
15.80 |
| 2026-04-14 12:00 |
22:04:28.95 |
+37:34:21.6 |
HIP 108881 |
15.45 |
| 2026-04-15 00:00 |
22:04:38.50 |
+37:37:23.7 |
HIP 108881 |
15.90 |
| 2026-04-15 12:00 |
22:04:47.98 |
+37:40:26.1 |
HIP 108881 |
17.08 |
| 2026-04-16 00:00 |
22:04:57.38 |
+37:43:28.9 |
HIP 108881 |
18.85 |