メタデータ
| 項目 |
値 |
| Designation |
C/2022 F1 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-08-05T05:09:46.437120Z |
| Orbit solution date (soln_date, UTC) |
2024-08-11T00:12:15Z |
| Obs used |
133 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
10.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-03-30T07:09:54.633600Z |
| Discovery magnitude (MPC) |
18.67 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) |
2023-04-07.0000000 |
| e |
0.99936046 |
| q (au) |
5.974611 |
| a (au) |
9342.022012 |
| i (deg) |
57.973045 |
| Ω (om, deg) |
350.654799 |
| ω (w, deg) |
278.276791 |
| M (ma, deg) |
0.000267 |
等級
散乱 + 全体線形
$$
M_a = (2.150 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
2.150 |
| n |
6.000 |
| gf |
0.976 |
| gb |
-0.502 |
| k |
1.000 |
| δ90 |
9.948 |
| 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 |
23:25:52.57 |
+02:28:34.6 |
HIP 115724 |
12.76 |
| 2026-09-25 12:00 |
23:25:43.05 |
+02:28:16.5 |
HIP 115724 |
15.14 |
| 2026-09-26 00:00 |
23:25:33.55 |
+02:27:58.4 |
HIP 115568 |
16.77 |
| 2026-09-26 12:00 |
23:25:24.08 |
+02:27:40.3 |
HIP 115568 |
14.97 |
| 2026-09-27 00:00 |
23:25:14.64 |
+02:27:22.2 |
HIP 115568 |
13.36 |
| 2026-09-27 12:00 |
23:25:05.22 |
+02:27:04.0 |
HIP 115568 |
12.01 |
| 2026-09-28 00:00 |
23:24:55.84 |
+02:26:45.8 |
HIP 115568 |
11.01 |
| 2026-09-28 12:00 |
23:24:46.48 |
+02:26:27.7 |
HIP 115568 |
10.47 |
| 2026-09-29 00:00 |
23:24:37.15 |
+02:26:09.5 |
HIP 115568 |
10.44 |
| 2026-09-29 12:00 |
23:24:27.85 |
+02:25:51.3 |
HIP 115568 |
10.92 |
| 2026-09-30 00:00 |
23:24:18.58 |
+02:25:33.2 |
HIP 115568 |
11.86 |
| 2026-09-30 12:00 |
23:24:09.35 |
+02:25:15.0 |
HIP 115568 |
13.14 |
| 2026-10-01 00:00 |
23:24:00.15 |
+02:24:56.9 |
HIP 115568 |
14.68 |
| 2026-10-01 12:00 |
23:23:50.98 |
+02:24:38.8 |
HIP 115568 |
16.39 |
| 2026-10-02 00:00 |
23:23:41.85 |
+02:24:20.7 |
HIP 115568 |
18.23 |
| 2026-10-02 12:00 |
23:23:32.75 |
+02:24:02.7 |
HIP 115568 |
20.16 |
| 2026-10-03 00:00 |
23:23:23.69 |
+02:23:44.7 |
HIP 115568 |
22.15 |
| 2026-10-03 12:00 |
23:23:14.67 |
+02:23:26.7 |
HIP 115568 |
24.18 |
| 2026-10-04 00:00 |
23:23:05.69 |
+02:23:08.8 |
HIP 115428 |
26.14 |
| 2026-10-04 12:00 |
23:22:56.74 |
+02:22:51.0 |
HIP 115428 |
26.27 |
| 2026-10-05 00:00 |
23:22:47.84 |
+02:22:33.2 |
HIP 115301 |
26.39 |
| 2026-10-05 12:00 |
23:22:38.98 |
+02:22:15.5 |
HIP 115301 |
24.26 |
| 2026-10-06 00:00 |
23:22:30.16 |
+02:21:57.9 |
HIP 115301 |
22.15 |
| 2026-10-06 12:00 |
23:22:21.38 |
+02:21:40.3 |
HIP 115301 |
20.08 |
| 2026-10-07 00:00 |
23:22:12.64 |
+02:21:22.8 |
HIP 115301 |
18.06 |
| 2026-10-07 12:00 |
23:22:03.95 |
+02:21:05.5 |
HIP 115301 |
16.08 |
| 2026-10-08 00:00 |
23:21:55.31 |
+02:20:48.2 |
HIP 115301 |
14.19 |
| 2026-10-08 12:00 |
23:21:46.71 |
+02:20:31.0 |
HIP 115301 |
12.39 |
| 2026-10-09 00:00 |
23:21:38.16 |
+02:20:13.9 |
HIP 115301 |
10.75 |
| 2026-10-09 12:00 |
23:21:29.65 |
+02:19:56.9 |
HIP 115301 |
9.32 |
| 2026-10-10 00:00 |
23:21:21.20 |
+02:19:40.1 |
HIP 115301 |
8.21 |
| 2026-10-10 12:00 |
23:21:12.80 |
+02:19:23.4 |
HIP 115301 |
7.56 |
| 2026-10-11 00:00 |
23:21:04.44 |
+02:19:06.8 |
HIP 115301 |
7.47 |
| 2026-10-11 12:00 |
23:20:56.14 |
+02:18:50.3 |
HIP 115301 |
7.95 |
| 2026-10-12 00:00 |
23:20:47.89 |
+02:18:34.0 |
HIP 115273 |
8.84 |
| 2026-10-12 12:00 |
23:20:39.69 |
+02:18:17.8 |
HIP 115273 |
9.47 |
| 2026-10-13 00:00 |
23:20:31.54 |
+02:18:01.8 |
HIP 115273 |
10.48 |
| 2026-10-13 12:00 |
23:20:23.45 |
+02:17:46.0 |
HIP 115273 |
11.74 |
| 2026-10-14 00:00 |
23:20:15.42 |
+02:17:30.3 |
HIP 115273 |
13.20 |
| 2026-10-14 12:00 |
23:20:07.44 |
+02:17:14.7 |
HIP 115273 |
14.77 |
| 2026-10-15 00:00 |
23:19:59.51 |
+02:16:59.4 |
HIP 115273 |
16.43 |
| 2026-10-15 12:00 |
23:19:51.65 |
+02:16:44.2 |
HIP 115273 |
18.14 |
| 2026-10-16 00:00 |
23:19:43.84 |
+02:16:29.2 |
HIP 115273 |
19.89 |