メタデータ
| 項目 |
値 |
| Designation |
C/2024 N1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-10-18T19:01:49.609920Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:04Z |
| Obs used |
57 |
| NEO |
- |
| M1 |
4.500 |
| K1 |
18.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-07-01T11:04:26.169600Z |
| Discovery magnitude (MPC) |
21.86 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2025-03-05.0000000 |
| e |
1.00144093 |
| q (au) |
4.398543 |
| a (au) |
-3052.575831 |
| i (deg) |
88.779969 |
| Ω (om, deg) |
323.018819 |
| ω (w, deg) |
91.242965 |
| M (ma, deg) |
-0.001331 |
等級
散乱 + 全体線形
$$
M_a = (5.761 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.761 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| k |
1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-25 00:00 |
11:18:34.53 |
+45:36:47.2 |
HIP 55265 |
6.94 |
| 2026-09-25 12:00 |
11:18:51.04 |
+45:33:53.7 |
HIP 55265 |
3.05 |
| 2026-09-26 00:00 |
11:19:07.48 |
+45:31:01.7 |
HIP 55265 |
1.95 |
| 2026-09-26 12:00 |
11:19:23.85 |
+45:28:11.3 |
HIP 55265 |
5.56 |
| 2026-09-27 00:00 |
11:19:40.14 |
+45:25:22.6 |
HIP 55265 |
9.49 |
| 2026-09-27 12:00 |
11:19:56.36 |
+45:22:35.5 |
HIP 55265 |
13.44 |
| 2026-09-28 00:00 |
11:20:12.50 |
+45:19:49.9 |
HIP 55490 |
17.28 |
| 2026-09-28 12:00 |
11:20:28.56 |
+45:17:06.0 |
HIP 55490 |
14.74 |
| 2026-09-29 00:00 |
11:20:44.55 |
+45:14:23.7 |
HIP 55490 |
12.91 |
| 2026-09-29 12:00 |
11:21:00.45 |
+45:11:43.0 |
HIP 55490 |
12.09 |
| 2026-09-30 00:00 |
11:21:16.28 |
+45:09:04.0 |
HIP 55391 |
12.04 |
| 2026-09-30 12:00 |
11:21:32.02 |
+45:06:26.6 |
HIP 55391 |
12.45 |
| 2026-10-01 00:00 |
11:21:47.68 |
+45:03:50.7 |
HIP 55391 |
13.93 |
| 2026-10-01 12:00 |
11:22:03.26 |
+45:01:16.6 |
HIP 55565 |
14.62 |
| 2026-10-02 00:00 |
11:22:18.76 |
+44:58:44.0 |
HIP 55565 |
10.97 |
| 2026-10-02 12:00 |
11:22:34.17 |
+44:56:13.1 |
HIP 55565 |
7.45 |
| 2026-10-03 00:00 |
11:22:49.50 |
+44:53:43.9 |
HIP 55565 |
4.28 |
| 2026-10-03 12:00 |
11:23:04.74 |
+44:51:16.3 |
HIP 55565 |
2.89 |
| 2026-10-04 00:00 |
11:23:19.89 |
+44:48:50.3 |
HIP 55565 |
4.99 |
| 2026-10-04 12:00 |
11:23:34.95 |
+44:46:26.0 |
HIP 55565 |
8.20 |
| 2026-10-05 00:00 |
11:23:49.93 |
+44:44:03.3 |
HIP 55565 |
11.62 |
| 2026-10-05 12:00 |
11:24:04.81 |
+44:41:42.3 |
HIP 55565 |
15.08 |
| 2026-10-06 00:00 |
11:24:19.60 |
+44:39:23.0 |
HIP 55565 |
18.54 |
| 2026-10-06 12:00 |
11:24:34.30 |
+44:37:05.3 |
HIP 55565 |
21.99 |
| 2026-10-07 00:00 |
11:24:48.90 |
+44:34:49.3 |
HIP 55565 |
25.42 |
| 2026-10-07 12:00 |
11:25:03.41 |
+44:32:35.0 |
HIP 55554 |
28.05 |
| 2026-10-08 00:00 |
11:25:17.82 |
+44:30:22.3 |
HIP 55944 |
28.44 |
| 2026-10-08 12:00 |
11:25:32.14 |
+44:28:11.3 |
HIP 55944 |
26.31 |
| 2026-10-09 00:00 |
11:25:46.35 |
+44:26:02.1 |
HIP 55944 |
24.46 |
| 2026-10-09 12:00 |
11:26:00.47 |
+44:23:54.4 |
HIP 55944 |
22.94 |
| 2026-10-10 00:00 |
11:26:14.48 |
+44:21:48.5 |
HIP 55944 |
21.83 |
| 2026-10-10 12:00 |
11:26:28.39 |
+44:19:44.3 |
HIP 55944 |
21.15 |
| 2026-10-11 00:00 |
11:26:42.20 |
+44:17:41.8 |
HIP 55944 |
20.94 |
| 2026-10-11 12:00 |
11:26:55.90 |
+44:15:40.9 |
HIP 55944 |
21.20 |
| 2026-10-12 00:00 |
11:27:09.50 |
+44:13:41.8 |
HIP 55994 |
21.35 |
| 2026-10-12 12:00 |
11:27:22.99 |
+44:11:44.3 |
HIP 55994 |
18.28 |
| 2026-10-13 00:00 |
11:27:36.37 |
+44:09:48.6 |
HIP 55994 |
15.26 |
| 2026-10-13 12:00 |
11:27:49.64 |
+44:07:54.5 |
HIP 55994 |
12.29 |
| 2026-10-14 00:00 |
11:28:02.80 |
+44:06:02.2 |
HIP 55994 |
9.42 |
| 2026-10-14 12:00 |
11:28:15.85 |
+44:04:11.5 |
HIP 55994 |
6.70 |
| 2026-10-15 00:00 |
11:28:28.79 |
+44:02:22.6 |
HIP 55994 |
4.38 |
| 2026-10-15 12:00 |
11:28:41.61 |
+44:00:35.4 |
HIP 55994 |
3.30 |
| 2026-10-16 00:00 |
11:28:54.31 |
+43:58:49.8 |
HIP 55994 |
4.42 |