メタデータ
| 項目 |
値 |
| Designation |
C/2022 QE78 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-09-10T20:50:32.619840Z |
| Orbit solution date (soln_date, UTC) |
2026-07-28T14:12:17Z |
| Obs used |
4125 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
7.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2025-01-13.0000000 |
| e |
1.00428769 |
| q (au) |
5.477042 |
| a (au) |
-1277.386478 |
| i (deg) |
36.578180 |
| Ω (om, deg) |
119.907557 |
| ω (w, deg) |
0.491066 |
| M (ma, deg) |
-0.005200 |
等級
散乱 + 全体線形
$$
M_a = (6.607 + 2.260\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.607 |
| n |
2.260 |
| gf |
1.000 |
| gb |
-0.958 |
| 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
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 |
10:12:10.05 |
+28:56:03.0 |
HIP 50144 |
29.98 |
| 2026-07-29 12:00 |
10:12:37.43 |
+28:54:40.7 |
HIP 50144 |
24.08 |
| 2026-07-30 00:00 |
10:13:04.84 |
+28:53:18.4 |
HIP 50144 |
18.36 |
| 2026-07-30 12:00 |
10:13:32.27 |
+28:51:56.2 |
HIP 50144 |
13.03 |
| 2026-07-31 00:00 |
10:13:59.72 |
+28:50:34.0 |
HIP 50144 |
8.85 |
| 2026-07-31 12:00 |
10:14:27.20 |
+28:49:11.9 |
HIP 50144 |
7.95 |
| 2026-08-01 00:00 |
10:14:54.69 |
+28:47:49.8 |
HIP 50144 |
11.15 |
| 2026-08-01 12:00 |
10:15:22.21 |
+28:46:27.8 |
HIP 50316 |
15.46 |
| 2026-08-02 00:00 |
10:15:49.75 |
+28:45:05.8 |
HIP 50316 |
9.37 |
| 2026-08-02 12:00 |
10:16:17.31 |
+28:43:43.8 |
HIP 50316 |
3.64 |
| 2026-08-03 00:00 |
10:16:44.89 |
+28:42:21.9 |
HIP 50316 |
3.94 |
| 2026-08-03 12:00 |
10:17:12.49 |
+28:41:00.1 |
HIP 50316 |
9.73 |
| 2026-08-04 00:00 |
10:17:40.11 |
+28:39:38.3 |
HIP 50316 |
15.84 |
| 2026-08-04 12:00 |
10:18:07.74 |
+28:38:16.7 |
HIP 50316 |
22.02 |
| 2026-08-05 00:00 |
10:18:35.40 |
+28:36:55.1 |
HIP 50585 |
21.81 |
| 2026-08-05 12:00 |
10:19:03.07 |
+28:35:33.5 |
HIP 50585 |
15.93 |
| 2026-08-06 00:00 |
10:19:30.76 |
+28:34:12.1 |
HIP 50585 |
10.46 |
| 2026-08-06 12:00 |
10:19:58.47 |
+28:32:50.7 |
HIP 50585 |
6.53 |
| 2026-08-07 00:00 |
10:20:26.19 |
+28:31:29.5 |
HIP 50585 |
7.33 |
| 2026-08-07 12:00 |
10:20:53.93 |
+28:30:08.3 |
HIP 50730 |
8.06 |
| 2026-08-08 00:00 |
10:21:21.68 |
+28:28:47.3 |
HIP 50730 |
3.81 |
| 2026-08-08 12:00 |
10:21:49.45 |
+28:27:26.3 |
HIP 50730 |
6.48 |
| 2026-08-09 00:00 |
10:22:17.23 |
+28:26:05.5 |
HIP 50730 |
12.15 |
| 2026-08-09 12:00 |
10:22:45.02 |
+28:24:44.8 |
HIP 50730 |
18.21 |
| 2026-08-10 00:00 |
10:23:12.83 |
+28:23:24.2 |
HIP 50730 |
24.37 |
| 2026-08-10 12:00 |
10:23:40.65 |
+28:22:03.8 |
HIP 50730 |
30.58 |
| 2026-08-11 00:00 |
10:24:08.48 |
+28:20:43.4 |
HIP 50824 |
34.28 |
| 2026-08-11 12:00 |
10:24:36.32 |
+28:19:23.3 |
HIP 51134 |
28.82 |
| 2026-08-12 00:00 |
10:25:04.18 |
+28:18:03.3 |
HIP 51134 |
22.96 |
| 2026-08-12 12:00 |
10:25:32.04 |
+28:16:43.4 |
HIP 51134 |
17.38 |
| 2026-08-13 00:00 |
10:25:59.91 |
+28:15:23.7 |
HIP 51134 |
12.47 |
| 2026-08-13 12:00 |
10:26:27.79 |
+28:14:04.1 |
HIP 51134 |
9.36 |
| 2026-08-14 00:00 |
10:26:55.68 |
+28:12:44.8 |
HIP 51134 |
9.92 |
| 2026-08-14 12:00 |
10:27:23.58 |
+28:11:25.6 |
HIP 51134 |
13.72 |
| 2026-08-15 00:00 |
10:27:51.48 |
+28:10:06.6 |
HIP 51134 |
18.89 |
| 2026-08-15 12:00 |
10:28:19.39 |
+28:08:47.8 |
HIP 51134 |
24.59 |
| 2026-08-16 00:00 |
10:28:47.31 |
+28:07:29.1 |
HIP 51406 |
23.87 |
| 2026-08-16 12:00 |
10:29:15.23 |
+28:06:10.7 |
HIP 51406 |
19.20 |
| 2026-08-17 00:00 |
10:29:43.15 |
+28:04:52.5 |
HIP 51406 |
15.71 |
| 2026-08-17 12:00 |
10:30:11.08 |
+28:03:34.5 |
HIP 51406 |
14.30 |
| 2026-08-18 00:00 |
10:30:39.01 |
+28:02:16.7 |
HIP 51406 |
15.55 |
| 2026-08-18 12:00 |
10:31:06.94 |
+28:00:59.1 |
HIP 51406 |
18.95 |
| 2026-08-19 00:00 |
10:31:34.88 |
+27:59:41.7 |
HIP 51406 |
23.57 |