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) |
| 2026-06-01 00:00 |
15:40:22.59 |
+61:32:23.3 |
HIP 76556 |
17.82 |
| 2026-06-01 12:00 |
15:39:47.35 |
+61:29:38.9 |
HIP 76556 |
12.90 |
| 2026-06-02 00:00 |
15:39:12.37 |
+61:26:51.8 |
HIP 76556 |
8.11 |
| 2026-06-02 12:00 |
15:38:37.64 |
+61:24:02.1 |
HIP 76556 |
3.98 |
| 2026-06-03 00:00 |
15:38:03.16 |
+61:21:09.7 |
HIP 76556 |
4.07 |
| 2026-06-03 12:00 |
15:37:28.95 |
+61:18:14.6 |
HIP 76556 |
8.26 |
| 2026-06-04 00:00 |
15:36:55.01 |
+61:15:16.9 |
HIP 76556 |
13.08 |
| 2026-06-04 12:00 |
15:36:21.33 |
+61:12:16.7 |
HIP 76556 |
18.03 |
| 2026-06-05 00:00 |
15:35:47.93 |
+61:09:13.9 |
HIP 76238 |
17.30 |
| 2026-06-05 12:00 |
15:35:14.80 |
+61:06:08.5 |
HIP 76238 |
12.52 |
| 2026-06-06 00:00 |
15:34:41.95 |
+61:03:00.6 |
HIP 76238 |
8.04 |
| 2026-06-06 12:00 |
15:34:09.37 |
+60:59:50.2 |
HIP 76238 |
4.83 |
| 2026-06-07 00:00 |
15:33:37.09 |
+60:56:37.3 |
HIP 76238 |
5.75 |
| 2026-06-07 12:00 |
15:33:05.08 |
+60:53:21.9 |
HIP 76238 |
9.68 |
| 2026-06-08 00:00 |
15:32:33.37 |
+60:50:04.2 |
HIP 76238 |
14.34 |
| 2026-06-08 12:00 |
15:32:01.95 |
+60:46:44.0 |
HIP 76238 |
19.21 |
| 2026-06-09 00:00 |
15:31:30.82 |
+60:43:21.4 |
HIP 76238 |
24.16 |
| 2026-06-09 12:00 |
15:30:59.99 |
+60:39:56.4 |
HIP 75696 |
23.09 |
| 2026-06-10 00:00 |
15:30:29.46 |
+60:36:29.2 |
HIP 75696 |
19.72 |
| 2026-06-10 12:00 |
15:29:59.22 |
+60:32:59.5 |
HIP 75696 |
17.26 |
| 2026-06-11 00:00 |
15:29:29.30 |
+60:29:27.7 |
HIP 75696 |
16.12 |
| 2026-06-11 12:00 |
15:28:59.67 |
+60:25:53.5 |
HIP 75696 |
16.60 |
| 2026-06-12 00:00 |
15:28:30.36 |
+60:22:17.1 |
HIP 75696 |
18.56 |
| 2026-06-12 12:00 |
15:28:01.35 |
+60:18:38.4 |
HIP 75696 |
21.61 |
| 2026-06-13 00:00 |
15:27:32.66 |
+60:14:57.6 |
HIP 75494 |
23.50 |
| 2026-06-13 12:00 |
15:27:04.28 |
+60:11:14.6 |
HIP 75494 |
18.39 |
| 2026-06-14 00:00 |
15:26:36.21 |
+60:07:29.5 |
HIP 75494 |
13.28 |
| 2026-06-14 12:00 |
15:26:08.47 |
+60:03:42.2 |
HIP 75494 |
8.18 |
| 2026-06-15 00:00 |
15:25:41.04 |
+59:59:52.9 |
HIP 75494 |
3.22 |
| 2026-06-15 12:00 |
15:25:13.93 |
+59:56:01.4 |
HIP 75494 |
2.57 |
| 2026-06-16 00:00 |
15:24:47.14 |
+59:52:08.0 |
HIP 75494 |
7.47 |
| 2026-06-16 12:00 |
15:24:20.67 |
+59:48:12.5 |
HIP 75494 |
12.57 |
| 2026-06-17 00:00 |
15:23:54.53 |
+59:44:15.1 |
HIP 75494 |
17.70 |
| 2026-06-17 12:00 |
15:23:28.72 |
+59:40:15.7 |
HIP 75494 |
22.84 |
| 2026-06-18 00:00 |
15:23:03.23 |
+59:36:14.4 |
HIP 75494 |
27.99 |
| 2026-06-18 12:00 |
15:22:38.06 |
+59:32:11.2 |
HIP 74938 |
29.25 |
| 2026-06-19 00:00 |
15:22:13.23 |
+59:28:06.1 |
HIP 74938 |
26.30 |
| 2026-06-19 12:00 |
15:21:48.72 |
+59:23:59.2 |
HIP 74938 |
24.15 |
| 2026-06-20 00:00 |
15:21:24.54 |
+59:19:50.5 |
HIP 74938 |
23.01 |
| 2026-06-20 12:00 |
15:21:00.69 |
+59:15:40.0 |
HIP 74938 |
23.05 |
| 2026-06-21 00:00 |
15:20:37.17 |
+59:11:27.7 |
HIP 74938 |
24.25 |
| 2026-06-21 12:00 |
15:20:13.98 |
+59:07:13.7 |
HIP 74886 |
24.81 |
| 2026-06-22 00:00 |
15:19:51.12 |
+59:02:58.1 |
HIP 74886 |
19.64 |