メタデータ
| 項目 |
値 |
| Designation |
C/2022 U3 (Bok) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-07-28T01:29:51.809280Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:42:53Z |
| Obs used |
803 |
| NEO |
- |
| M1 |
8.800 |
| K1 |
8.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2022-10-31T06:16:30.662400Z |
| Discovery magnitude (MPC) |
19.66 G |
| Discovery observatory (MPC) |
V00 · Kitt Peak-Bok |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2023-12-18.0000000 |
| e |
1.00318343 |
| q (au) |
4.826915 |
| a (au) |
-1516.261844 |
| i (deg) |
33.638233 |
| Ω (om, deg) |
272.788587 |
| ω (w, deg) |
189.047254 |
| M (ma, deg) |
-0.003724 |
等級
散乱 + 全体線形
$$
M_a = (7.834 + 3.396\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.834 |
| n |
3.396 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
09:39:23.46 |
-22:18:28.6 |
HIP 47353 |
39.96 |
| 2026-05-12 12:00 |
09:39:30.38 |
-22:17:05.6 |
HIP 47535 |
40.24 |
| 2026-05-13 00:00 |
09:39:37.44 |
-22:15:43.3 |
HIP 47535 |
38.13 |
| 2026-05-13 12:00 |
09:39:44.62 |
-22:14:21.8 |
HIP 47535 |
36.00 |
| 2026-05-14 00:00 |
09:39:51.94 |
-22:13:01.1 |
HIP 47535 |
33.87 |
| 2026-05-14 12:00 |
09:39:59.39 |
-22:11:41.2 |
HIP 47535 |
31.74 |
| 2026-05-15 00:00 |
09:40:06.97 |
-22:10:22.0 |
HIP 47535 |
29.60 |
| 2026-05-15 12:00 |
09:40:14.68 |
-22:09:03.7 |
HIP 47535 |
27.47 |
| 2026-05-16 00:00 |
09:40:22.52 |
-22:07:46.2 |
HIP 47535 |
25.34 |
| 2026-05-16 12:00 |
09:40:30.49 |
-22:06:29.5 |
HIP 47535 |
23.22 |
| 2026-05-17 00:00 |
09:40:38.58 |
-22:05:13.6 |
HIP 47535 |
21.12 |
| 2026-05-17 12:00 |
09:40:46.81 |
-22:03:58.6 |
HIP 47535 |
19.06 |
| 2026-05-18 00:00 |
09:40:55.16 |
-22:02:44.4 |
HIP 47535 |
17.05 |
| 2026-05-18 12:00 |
09:41:03.64 |
-22:01:31.0 |
HIP 47535 |
15.13 |
| 2026-05-19 00:00 |
09:41:12.24 |
-22:00:18.5 |
HIP 47535 |
13.34 |
| 2026-05-19 12:00 |
09:41:20.97 |
-21:59:06.9 |
HIP 47535 |
11.75 |
| 2026-05-20 00:00 |
09:41:29.82 |
-21:57:56.2 |
HIP 47535 |
10.47 |
| 2026-05-20 12:00 |
09:41:38.79 |
-21:56:46.3 |
HIP 47535 |
9.63 |
| 2026-05-21 00:00 |
09:41:47.89 |
-21:55:37.3 |
HIP 47535 |
9.37 |
| 2026-05-21 12:00 |
09:41:57.11 |
-21:54:29.1 |
HIP 47535 |
9.74 |
| 2026-05-22 00:00 |
09:42:06.45 |
-21:53:21.9 |
HIP 47535 |
10.70 |
| 2026-05-22 12:00 |
09:42:15.91 |
-21:52:15.6 |
HIP 47535 |
12.11 |
| 2026-05-23 00:00 |
09:42:25.49 |
-21:51:10.1 |
HIP 47535 |
13.86 |
| 2026-05-23 12:00 |
09:42:35.18 |
-21:50:05.6 |
HIP 47535 |
15.82 |
| 2026-05-24 00:00 |
09:42:45.00 |
-21:49:02.0 |
HIP 47535 |
17.95 |
| 2026-05-24 12:00 |
09:42:54.93 |
-21:47:59.3 |
HIP 47535 |
20.20 |
| 2026-05-25 00:00 |
09:43:04.98 |
-21:46:57.5 |
HIP 47535 |
22.53 |
| 2026-05-25 12:00 |
09:43:15.14 |
-21:45:56.6 |
HIP 47535 |
24.93 |
| 2026-05-26 00:00 |
09:43:25.41 |
-21:44:56.6 |
HIP 47535 |
27.39 |
| 2026-05-26 12:00 |
09:43:35.80 |
-21:43:57.6 |
HIP 47535 |
29.90 |
| 2026-05-27 00:00 |
09:43:46.31 |
-21:42:59.5 |
HIP 47910 |
29.92 |
| 2026-05-27 12:00 |
09:43:56.92 |
-21:42:02.3 |
HIP 47910 |
27.56 |
| 2026-05-28 00:00 |
09:44:07.65 |
-21:41:06.1 |
HIP 47910 |
25.24 |
| 2026-05-28 12:00 |
09:44:18.49 |
-21:40:10.8 |
HIP 47910 |
22.95 |
| 2026-05-29 00:00 |
09:44:29.43 |
-21:39:16.5 |
HIP 47910 |
20.73 |
| 2026-05-29 12:00 |
09:44:40.49 |
-21:38:23.1 |
HIP 47910 |
18.60 |
| 2026-05-30 00:00 |
09:44:51.66 |
-21:37:30.6 |
HIP 47910 |
16.62 |
| 2026-05-30 12:00 |
09:45:02.93 |
-21:36:39.1 |
HIP 47910 |
14.85 |
| 2026-05-31 00:00 |
09:45:14.31 |
-21:35:48.5 |
HIP 47910 |
13.38 |
| 2026-05-31 12:00 |
09:45:25.79 |
-21:34:58.9 |
HIP 47910 |
12.35 |
| 2026-06-01 00:00 |
09:45:37.38 |
-21:34:10.3 |
HIP 47910 |
11.87 |
| 2026-06-01 12:00 |
09:45:49.08 |
-21:33:22.6 |
HIP 47931 |
11.53 |
| 2026-06-02 00:00 |
09:46:00.88 |
-21:32:35.9 |
HIP 47931 |
10.24 |