メタデータ
| 項目 |
値 |
| Designation |
C/2024 M1 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-11-20T00:40:14.862720Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:02Z |
| Obs used |
1565 |
| NEO |
- |
| M1 |
14.300 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-06-29T10:08:51.388800Z |
| Discovery magnitude (MPC) |
17.86 o |
| Discovery observatory (MPC) |
W68 · ATLAS Chile, Rio Hurtado |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2024-12-03.0000000 |
| e |
0.94309352 |
| q (au) |
1.703373 |
| a (au) |
29.932839 |
| i (deg) |
73.710121 |
| Ω (om, deg) |
76.215098 |
| ω (w, deg) |
345.599965 |
| M (ma, deg) |
0.078071 |
等級
散乱 + 全体線形
$$
M_a = (14.267 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.267 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-0.732 |
| k |
0.971 |
| δ90 |
1.000 |
| 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 |
15:21:38.41 |
+44:21:09.8 |
HIP 75195 |
6.72 |
| 2026-09-20 12:00 |
15:21:54.47 |
+44:17:00.8 |
HIP 75195 |
1.70 |
| 2026-09-21 00:00 |
15:22:10.62 |
+44:12:52.8 |
HIP 75195 |
3.41 |
| 2026-09-21 12:00 |
15:22:26.86 |
+44:08:46.0 |
HIP 75195 |
8.44 |
| 2026-09-22 00:00 |
15:22:43.19 |
+44:04:40.3 |
HIP 75195 |
13.47 |
| 2026-09-22 12:00 |
15:22:59.61 |
+44:00:35.7 |
HIP 75195 |
18.50 |
| 2026-09-23 00:00 |
15:23:16.11 |
+43:56:32.3 |
HIP 75195 |
23.53 |
| 2026-09-23 12:00 |
15:23:32.70 |
+43:52:30.0 |
HIP 75195 |
28.55 |
| 2026-09-24 00:00 |
15:23:49.38 |
+43:48:28.8 |
HIP 75580 |
30.65 |
| 2026-09-24 12:00 |
15:24:06.14 |
+43:44:28.8 |
HIP 75428 |
26.40 |
| 2026-09-25 00:00 |
15:24:22.98 |
+43:40:30.0 |
HIP 75428 |
21.98 |
| 2026-09-25 12:00 |
15:24:39.90 |
+43:36:32.3 |
HIP 75428 |
17.89 |
| 2026-09-26 00:00 |
15:24:56.90 |
+43:32:35.7 |
HIP 75428 |
14.42 |
| 2026-09-26 12:00 |
15:25:13.99 |
+43:28:40.4 |
HIP 75428 |
12.12 |
| 2026-09-27 00:00 |
15:25:31.15 |
+43:24:46.2 |
HIP 75428 |
11.67 |
| 2026-09-27 12:00 |
15:25:48.39 |
+43:20:53.2 |
HIP 75428 |
13.27 |
| 2026-09-28 00:00 |
15:26:05.71 |
+43:17:01.3 |
HIP 75428 |
16.32 |
| 2026-09-28 12:00 |
15:26:23.10 |
+43:13:10.7 |
HIP 75422 |
20.01 |
| 2026-09-29 00:00 |
15:26:40.57 |
+43:09:21.2 |
HIP 75676 |
19.74 |
| 2026-09-29 12:00 |
15:26:58.11 |
+43:05:33.0 |
HIP 75676 |
14.81 |
| 2026-09-30 00:00 |
15:27:15.72 |
+43:01:45.9 |
HIP 75676 |
9.93 |
| 2026-09-30 12:00 |
15:27:33.41 |
+42:58:00.1 |
HIP 75676 |
5.24 |
| 2026-10-01 00:00 |
15:27:51.17 |
+42:54:15.4 |
HIP 75676 |
2.39 |
| 2026-10-01 12:00 |
15:28:09.01 |
+42:50:32.0 |
HIP 75676 |
5.76 |
| 2026-10-02 00:00 |
15:28:26.91 |
+42:46:49.8 |
HIP 75676 |
10.48 |
| 2026-10-02 12:00 |
15:28:44.88 |
+42:43:08.8 |
HIP 75676 |
15.34 |
| 2026-10-03 00:00 |
15:29:02.92 |
+42:39:29.1 |
HIP 75868 |
17.39 |
| 2026-10-03 12:00 |
15:29:21.03 |
+42:35:50.6 |
HIP 75868 |
12.63 |
| 2026-10-04 00:00 |
15:29:39.21 |
+42:32:13.3 |
HIP 75868 |
8.11 |
| 2026-10-04 12:00 |
15:29:57.45 |
+42:28:37.3 |
HIP 75868 |
4.56 |
| 2026-10-05 00:00 |
15:30:15.76 |
+42:25:02.5 |
HIP 75868 |
4.96 |
| 2026-10-05 12:00 |
15:30:34.13 |
+42:21:29.0 |
HIP 75868 |
8.77 |
| 2026-10-06 00:00 |
15:30:52.56 |
+42:17:56.8 |
HIP 75868 |
13.33 |
| 2026-10-06 12:00 |
15:31:11.06 |
+42:14:25.8 |
HIP 75868 |
18.08 |
| 2026-10-07 00:00 |
15:31:29.62 |
+42:10:56.2 |
HIP 75868 |
22.90 |
| 2026-10-07 12:00 |
15:31:48.24 |
+42:07:27.8 |
HIP 76156 |
24.95 |
| 2026-10-08 00:00 |
15:32:06.93 |
+42:04:00.7 |
HIP 76156 |
20.07 |
| 2026-10-08 12:00 |
15:32:25.67 |
+42:00:34.9 |
HIP 76156 |
15.22 |
| 2026-10-09 00:00 |
15:32:44.47 |
+41:57:10.4 |
HIP 76156 |
10.40 |
| 2026-10-09 12:00 |
15:33:03.32 |
+41:53:47.2 |
HIP 76156 |
5.71 |
| 2026-10-10 00:00 |
15:33:22.23 |
+41:50:25.3 |
HIP 76156 |
2.19 |
| 2026-10-10 12:00 |
15:33:41.20 |
+41:47:04.8 |
HIP 76180 |
1.89 |
| 2026-10-11 00:00 |
15:34:00.22 |
+41:43:45.5 |
HIP 76180 |
4.63 |