メタデータ
| 項目 |
値 |
| Designation |
C/2026 H3 (Bok) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2026-05-23T01:14:31.597440Z |
| Orbit solution date (soln_date, UTC) |
2026-05-19T10:12:02Z |
| Obs used |
59 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
11.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2026-04-27T11:09:21.312000Z |
| Discovery magnitude (MPC) |
20.88 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) |
2026-03-05.0000000 |
| e |
1.00372394 |
| q (au) |
7.728219 |
| a (au) |
-2075.279272 |
| i (deg) |
142.567608 |
| Ω (om, deg) |
352.490926 |
| ω (w, deg) |
98.493167 |
| M (ma, deg) |
-0.000824 |
等級
散乱 + 全体線形
$$
M_a = (3.113 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
3.113 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-06-01 00:00 |
17:01:24.55 |
+19:25:06.4 |
HIP 83384 |
15.91 |
| 2026-06-01 12:00 |
17:00:57.76 |
+19:25:46.7 |
HIP 83180 |
16.55 |
| 2026-06-02 00:00 |
17:00:30.95 |
+19:26:25.4 |
HIP 83180 |
11.54 |
| 2026-06-02 12:00 |
17:00:04.13 |
+19:27:02.4 |
HIP 83180 |
8.59 |
| 2026-06-03 00:00 |
16:59:37.29 |
+19:27:37.8 |
HIP 83180 |
9.77 |
| 2026-06-03 12:00 |
16:59:10.43 |
+19:28:11.5 |
HIP 83180 |
14.09 |
| 2026-06-04 00:00 |
16:58:43.57 |
+19:28:43.6 |
HIP 83180 |
19.56 |
| 2026-06-04 12:00 |
16:58:16.69 |
+19:29:14.0 |
HIP 83002 |
23.10 |
| 2026-06-05 00:00 |
16:57:49.81 |
+19:29:42.7 |
HIP 83002 |
22.06 |
| 2026-06-05 12:00 |
16:57:22.92 |
+19:30:09.8 |
HIP 83002 |
22.80 |
| 2026-06-06 00:00 |
16:56:56.03 |
+19:30:35.2 |
HIP 83002 |
25.15 |
| 2026-06-06 12:00 |
16:56:29.15 |
+19:30:58.9 |
HIP 83002 |
28.72 |
| 2026-06-07 00:00 |
16:56:02.26 |
+19:31:21.0 |
HIP 83002 |
33.11 |
| 2026-06-07 12:00 |
16:55:35.38 |
+19:31:41.3 |
HIP 82721 |
29.90 |
| 2026-06-08 00:00 |
16:55:08.50 |
+19:32:00.0 |
HIP 82721 |
27.50 |
| 2026-06-08 12:00 |
16:54:41.63 |
+19:32:17.0 |
HIP 82721 |
26.42 |
| 2026-06-09 00:00 |
16:54:14.78 |
+19:32:32.3 |
HIP 82721 |
26.81 |
| 2026-06-09 12:00 |
16:53:47.94 |
+19:32:46.0 |
HIP 82721 |
28.61 |
| 2026-06-10 00:00 |
16:53:21.11 |
+19:32:57.9 |
HIP 82476 |
31.47 |
| 2026-06-10 12:00 |
16:52:54.30 |
+19:33:08.2 |
HIP 82476 |
26.06 |
| 2026-06-11 00:00 |
16:52:27.51 |
+19:33:16.7 |
HIP 82476 |
21.14 |
| 2026-06-11 12:00 |
16:52:00.74 |
+19:33:23.6 |
HIP 82476 |
17.15 |
| 2026-06-12 00:00 |
16:51:34.00 |
+19:33:28.8 |
HIP 82476 |
14.84 |
| 2026-06-12 12:00 |
16:51:07.28 |
+19:33:32.3 |
HIP 82476 |
14.99 |
| 2026-06-13 00:00 |
16:50:40.60 |
+19:33:34.1 |
HIP 82386 |
15.40 |
| 2026-06-13 12:00 |
16:50:13.94 |
+19:33:34.2 |
HIP 82386 |
13.03 |
| 2026-06-14 00:00 |
16:49:47.32 |
+19:33:32.7 |
HIP 82386 |
13.44 |
| 2026-06-14 12:00 |
16:49:20.74 |
+19:33:29.4 |
HIP 82320 |
15.95 |
| 2026-06-15 00:00 |
16:48:54.19 |
+19:33:24.5 |
HIP 82320 |
16.37 |
| 2026-06-15 12:00 |
16:48:27.69 |
+19:33:17.9 |
HIP 82320 |
18.95 |
| 2026-06-16 00:00 |
16:48:01.22 |
+19:33:09.7 |
HIP 82320 |
22.95 |
| 2026-06-16 12:00 |
16:47:34.81 |
+19:32:59.7 |
HIP 82059 |
26.71 |
| 2026-06-17 00:00 |
16:47:08.44 |
+19:32:48.1 |
HIP 82059 |
20.73 |
| 2026-06-17 12:00 |
16:46:42.12 |
+19:32:34.8 |
HIP 82059 |
14.96 |
| 2026-06-18 00:00 |
16:46:15.85 |
+19:32:19.9 |
HIP 82059 |
9.77 |
| 2026-06-18 12:00 |
16:45:49.63 |
+19:32:03.3 |
HIP 82059 |
6.64 |
| 2026-06-19 00:00 |
16:45:23.48 |
+19:31:45.1 |
HIP 82059 |
8.33 |
| 2026-06-19 12:00 |
16:44:57.38 |
+19:31:25.2 |
HIP 82059 |
13.07 |
| 2026-06-20 00:00 |
16:44:31.34 |
+19:31:03.7 |
HIP 82059 |
18.65 |
| 2026-06-20 12:00 |
16:44:05.36 |
+19:30:40.6 |
HIP 81839 |
18.01 |
| 2026-06-21 00:00 |
16:43:39.45 |
+19:30:15.8 |
HIP 81839 |
12.69 |
| 2026-06-21 12:00 |
16:43:13.61 |
+19:29:49.5 |
HIP 81839 |
8.50 |
| 2026-06-22 00:00 |
16:42:47.83 |
+19:29:21.5 |
HIP 81839 |
7.60 |