メタデータ
| 項目 |
値 |
| Designation |
C/2024 J3 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2026-11-25T09:15:06.690240Z |
| Orbit solution date (soln_date, UTC) |
2026-07-28T14:12:17Z |
| Obs used |
2290 |
| NEO |
- |
| M1 |
9.500 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-05-06T06:21:33.667200Z |
| Discovery magnitude (MPC) |
17.60 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) |
2025-11-24.0000000 |
| e |
1.00045253 |
| q (au) |
3.865409 |
| a (au) |
-8541.684648 |
| i (deg) |
75.641186 |
| Ω (om, deg) |
285.961445 |
| ω (w, deg) |
74.088703 |
| M (ma, deg) |
-0.000457 |
等級
散乱 + 全体線形
$$
M_a = (5.580 + 3.274\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.580 |
| n |
3.274 |
| gf |
0.955 |
| gb |
-0.915 |
| k |
1.000 |
| δ90 |
9.029 |
| 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 |
19:16:31.65 |
+42:14:55.4 |
HIP 94809 |
10.99 |
| 2026-07-29 12:00 |
19:15:51.32 |
+42:18:05.3 |
HIP 94809 |
18.50 |
| 2026-07-30 00:00 |
19:15:11.06 |
+42:21:10.9 |
HIP 94809 |
26.33 |
| 2026-07-30 12:00 |
19:14:30.87 |
+42:24:12.0 |
HIP 94409 |
19.91 |
| 2026-07-31 00:00 |
19:13:50.75 |
+42:27:08.6 |
HIP 94409 |
11.98 |
| 2026-07-31 12:00 |
19:13:10.71 |
+42:30:00.9 |
HIP 94409 |
4.27 |
| 2026-08-01 00:00 |
19:12:30.76 |
+42:32:48.8 |
HIP 94409 |
4.26 |
| 2026-08-01 12:00 |
19:11:50.90 |
+42:35:32.2 |
HIP 94409 |
11.88 |
| 2026-08-02 00:00 |
19:11:11.14 |
+42:38:11.3 |
HIP 94182 |
8.46 |
| 2026-08-02 12:00 |
19:10:31.49 |
+42:40:46.1 |
HIP 94182 |
4.77 |
| 2026-08-03 00:00 |
19:09:51.95 |
+42:43:16.5 |
HIP 94182 |
9.61 |
| 2026-08-03 12:00 |
19:09:12.53 |
+42:45:42.6 |
HIP 94182 |
16.68 |
| 2026-08-04 00:00 |
19:08:33.24 |
+42:48:04.4 |
HIP 94182 |
24.04 |
| 2026-08-04 12:00 |
19:07:54.08 |
+42:50:21.9 |
HIP 93910 |
29.22 |
| 2026-08-05 00:00 |
19:07:15.06 |
+42:52:35.2 |
HIP 93910 |
26.34 |
| 2026-08-05 12:00 |
19:06:36.18 |
+42:54:44.2 |
HIP 93910 |
25.46 |
| 2026-08-06 00:00 |
19:05:57.45 |
+42:56:49.0 |
HIP 93910 |
26.74 |
| 2026-08-06 12:00 |
19:05:18.88 |
+42:58:49.6 |
HIP 93910 |
29.86 |
| 2026-08-07 00:00 |
19:04:40.48 |
+43:00:46.1 |
HIP 93511 |
22.99 |
| 2026-08-07 12:00 |
19:04:02.24 |
+43:02:38.3 |
HIP 93511 |
15.76 |
| 2026-08-08 00:00 |
19:03:24.18 |
+43:04:26.5 |
HIP 93511 |
8.58 |
| 2026-08-08 12:00 |
19:02:46.30 |
+43:06:10.6 |
HIP 93511 |
1.54 |
| 2026-08-09 00:00 |
19:02:08.62 |
+43:07:50.6 |
HIP 93511 |
5.67 |
| 2026-08-09 12:00 |
19:01:31.12 |
+43:09:26.6 |
HIP 93511 |
12.68 |
| 2026-08-10 00:00 |
19:00:53.83 |
+43:10:58.5 |
HIP 93266 |
11.14 |
| 2026-08-10 12:00 |
19:00:16.74 |
+43:12:26.5 |
HIP 93266 |
4.50 |
| 2026-08-11 00:00 |
18:59:39.87 |
+43:13:50.6 |
HIP 93266 |
3.45 |
| 2026-08-11 12:00 |
18:59:03.22 |
+43:15:10.7 |
HIP 93266 |
9.84 |
| 2026-08-12 00:00 |
18:58:26.79 |
+43:16:27.0 |
HIP 93266 |
16.52 |
| 2026-08-12 12:00 |
18:57:50.59 |
+43:17:39.4 |
HIP 93266 |
23.19 |
| 2026-08-13 00:00 |
18:57:14.63 |
+43:18:48.0 |
HIP 93266 |
29.82 |
| 2026-08-13 12:00 |
18:56:38.90 |
+43:19:52.9 |
HIP 92775 |
33.28 |
| 2026-08-14 00:00 |
18:56:03.43 |
+43:20:54.1 |
HIP 92775 |
29.29 |
| 2026-08-14 12:00 |
18:55:28.21 |
+43:21:51.6 |
HIP 92775 |
26.32 |
| 2026-08-15 00:00 |
18:54:53.24 |
+43:22:45.4 |
HIP 92775 |
24.69 |
| 2026-08-15 12:00 |
18:54:18.54 |
+43:23:35.7 |
HIP 92668 |
23.94 |
| 2026-08-16 00:00 |
18:53:44.10 |
+43:24:22.4 |
HIP 92668 |
20.12 |
| 2026-08-16 12:00 |
18:53:09.94 |
+43:25:05.6 |
HIP 92668 |
17.82 |
| 2026-08-17 00:00 |
18:52:36.05 |
+43:25:45.3 |
HIP 92615 |
17.21 |
| 2026-08-17 12:00 |
18:52:02.44 |
+43:26:21.6 |
HIP 92615 |
16.43 |
| 2026-08-18 00:00 |
18:51:29.12 |
+43:26:54.5 |
HIP 92615 |
17.88 |
| 2026-08-18 12:00 |
18:50:56.09 |
+43:27:24.1 |
HIP 92615 |
21.05 |
| 2026-08-19 00:00 |
18:50:23.35 |
+43:27:50.3 |
HIP 92352 |
19.79 |