メタデータ
| 項目 |
値 |
| Designation |
C/1906 B1 (Brooks) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1905-12-22T18:51:26.026560Z |
| Orbit solution date (soln_date, UTC) |
2024-02-20T20:16:47Z |
| Obs used |
158 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
16.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1906-02-22.0000000 |
| e |
0.99985360 |
| q (au) |
1.296232 |
| a (au) |
8853.993905 |
| i (deg) |
126.442402 |
| Ω (om, deg) |
287.708053 |
| ω (w, deg) |
89.843518 |
| M (ma, deg) |
0.000072 |
等級
散乱 + 全体線形
$$
M_a = (6.314 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.314 |
| n |
6.000 |
| gf |
0.973 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
9.849 |
| 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 |
03:30:40.61 |
-34:54:15.2 |
HIP 16493 |
21.23 |
| 2026-06-01 12:00 |
03:30:41.58 |
-34:54:16.2 |
HIP 16493 |
21.03 |
| 2026-06-02 00:00 |
03:30:42.56 |
-34:54:17.3 |
HIP 16493 |
20.83 |
| 2026-06-02 12:00 |
03:30:43.53 |
-34:54:18.5 |
HIP 16493 |
20.63 |
| 2026-06-03 00:00 |
03:30:44.50 |
-34:54:19.8 |
HIP 16493 |
20.43 |
| 2026-06-03 12:00 |
03:30:45.46 |
-34:54:21.2 |
HIP 16493 |
20.23 |
| 2026-06-04 00:00 |
03:30:46.43 |
-34:54:22.6 |
HIP 16493 |
20.03 |
| 2026-06-04 12:00 |
03:30:47.39 |
-34:54:24.2 |
HIP 16493 |
19.83 |
| 2026-06-05 00:00 |
03:30:48.35 |
-34:54:25.8 |
HIP 16493 |
19.63 |
| 2026-06-05 12:00 |
03:30:49.30 |
-34:54:27.6 |
HIP 16493 |
19.44 |
| 2026-06-06 00:00 |
03:30:50.26 |
-34:54:29.4 |
HIP 16493 |
19.24 |
| 2026-06-06 12:00 |
03:30:51.21 |
-34:54:31.3 |
HIP 16493 |
19.04 |
| 2026-06-07 00:00 |
03:30:52.16 |
-34:54:33.2 |
HIP 16493 |
18.84 |
| 2026-06-07 12:00 |
03:30:53.10 |
-34:54:35.3 |
HIP 16493 |
18.65 |
| 2026-06-08 00:00 |
03:30:54.04 |
-34:54:37.5 |
HIP 16493 |
18.45 |
| 2026-06-08 12:00 |
03:30:54.98 |
-34:54:39.7 |
HIP 16493 |
18.26 |
| 2026-06-09 00:00 |
03:30:55.91 |
-34:54:42.1 |
HIP 16493 |
18.06 |
| 2026-06-09 12:00 |
03:30:56.85 |
-34:54:44.5 |
HIP 16493 |
17.86 |
| 2026-06-10 00:00 |
03:30:57.78 |
-34:54:47.0 |
HIP 16493 |
17.67 |
| 2026-06-10 12:00 |
03:30:58.70 |
-34:54:49.6 |
HIP 16493 |
17.48 |
| 2026-06-11 00:00 |
03:30:59.62 |
-34:54:52.3 |
HIP 16493 |
17.28 |
| 2026-06-11 12:00 |
03:31:00.54 |
-34:54:55.1 |
HIP 16493 |
17.09 |
| 2026-06-12 00:00 |
03:31:01.45 |
-34:54:57.9 |
HIP 16493 |
16.89 |
| 2026-06-12 12:00 |
03:31:02.37 |
-34:55:00.9 |
HIP 16493 |
16.70 |
| 2026-06-13 00:00 |
03:31:03.27 |
-34:55:03.9 |
HIP 16493 |
16.51 |
| 2026-06-13 12:00 |
03:31:04.18 |
-34:55:07.0 |
HIP 16493 |
16.32 |
| 2026-06-14 00:00 |
03:31:05.08 |
-34:55:10.2 |
HIP 16493 |
16.13 |
| 2026-06-14 12:00 |
03:31:05.97 |
-34:55:13.5 |
HIP 16493 |
15.94 |
| 2026-06-15 00:00 |
03:31:06.86 |
-34:55:16.9 |
HIP 16493 |
15.75 |
| 2026-06-15 12:00 |
03:31:07.75 |
-34:55:20.4 |
HIP 16493 |
15.56 |
| 2026-06-16 00:00 |
03:31:08.63 |
-34:55:23.9 |
HIP 16493 |
15.37 |
| 2026-06-16 12:00 |
03:31:09.51 |
-34:55:27.6 |
HIP 16493 |
15.18 |
| 2026-06-17 00:00 |
03:31:10.39 |
-34:55:31.3 |
HIP 16493 |
14.99 |
| 2026-06-17 12:00 |
03:31:11.26 |
-34:55:35.1 |
HIP 16493 |
14.81 |
| 2026-06-18 00:00 |
03:31:12.12 |
-34:55:39.0 |
HIP 16493 |
14.62 |
| 2026-06-18 12:00 |
03:31:12.99 |
-34:55:42.9 |
HIP 16493 |
14.44 |
| 2026-06-19 00:00 |
03:31:13.84 |
-34:55:47.0 |
HIP 16493 |
14.25 |
| 2026-06-19 12:00 |
03:31:14.70 |
-34:55:51.1 |
HIP 16493 |
14.07 |
| 2026-06-20 00:00 |
03:31:15.54 |
-34:55:55.4 |
HIP 16493 |
13.89 |
| 2026-06-20 12:00 |
03:31:16.39 |
-34:55:59.7 |
HIP 16493 |
13.71 |
| 2026-06-21 00:00 |
03:31:17.22 |
-34:56:04.0 |
HIP 16493 |
13.52 |
| 2026-06-21 12:00 |
03:31:18.06 |
-34:56:08.5 |
HIP 16493 |
13.34 |
| 2026-06-22 00:00 |
03:31:18.89 |
-34:56:13.1 |
HIP 16493 |
13.17 |