メタデータ
| 項目 |
値 |
| Designation |
C/1946 C1 (Timmers) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1946-04-13T06:19:00.480000Z |
| Orbit solution date (soln_date, UTC) |
- |
| Obs used |
183 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1946-04-10.0000000 |
| e |
1.00116900 |
| q (au) |
1.724129 |
| a (au) |
-1474.875107 |
| i (deg) |
72.842700 |
| Ω (om, deg) |
129.665000 |
| ω (w, deg) |
54.328000 |
| M (ma, deg) |
-0.000057 |
等級
散乱 + 全体線形
$$
M_a = (4.132 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.132 |
| 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) |
| 2026-07-29 00:00 |
22:53:58.46 |
-48:28:14.6 |
HIP 113044 |
8.38 |
| 2026-07-29 12:00 |
22:53:57.19 |
-48:28:25.4 |
HIP 113044 |
8.13 |
| 2026-07-30 00:00 |
22:53:55.92 |
-48:28:36.2 |
HIP 113044 |
7.88 |
| 2026-07-30 12:00 |
22:53:54.63 |
-48:28:46.9 |
HIP 113044 |
7.63 |
| 2026-07-31 00:00 |
22:53:53.34 |
-48:28:57.6 |
HIP 113044 |
7.39 |
| 2026-07-31 12:00 |
22:53:52.04 |
-48:29:08.2 |
HIP 113044 |
7.15 |
| 2026-08-01 00:00 |
22:53:50.73 |
-48:29:18.8 |
HIP 113044 |
6.92 |
| 2026-08-01 12:00 |
22:53:49.42 |
-48:29:29.2 |
HIP 113044 |
6.68 |
| 2026-08-02 00:00 |
22:53:48.09 |
-48:29:39.7 |
HIP 113044 |
6.46 |
| 2026-08-02 12:00 |
22:53:46.76 |
-48:29:50.1 |
HIP 113044 |
6.23 |
| 2026-08-03 00:00 |
22:53:45.42 |
-48:30:00.4 |
HIP 113044 |
6.01 |
| 2026-08-03 12:00 |
22:53:44.08 |
-48:30:10.6 |
HIP 113044 |
5.80 |
| 2026-08-04 00:00 |
22:53:42.73 |
-48:30:20.8 |
HIP 113044 |
5.60 |
| 2026-08-04 12:00 |
22:53:41.37 |
-48:30:31.0 |
HIP 113044 |
5.40 |
| 2026-08-05 00:00 |
22:53:40.00 |
-48:30:41.0 |
HIP 113044 |
5.21 |
| 2026-08-05 12:00 |
22:53:38.63 |
-48:30:51.1 |
HIP 113044 |
5.04 |
| 2026-08-06 00:00 |
22:53:37.25 |
-48:31:01.0 |
HIP 113044 |
4.87 |
| 2026-08-06 12:00 |
22:53:35.86 |
-48:31:10.9 |
HIP 113044 |
4.71 |
| 2026-08-07 00:00 |
22:53:34.46 |
-48:31:20.7 |
HIP 113044 |
4.57 |
| 2026-08-07 12:00 |
22:53:33.06 |
-48:31:30.4 |
HIP 113044 |
4.45 |
| 2026-08-08 00:00 |
22:53:31.66 |
-48:31:40.1 |
HIP 113044 |
4.33 |
| 2026-08-08 12:00 |
22:53:30.24 |
-48:31:49.7 |
HIP 113044 |
4.24 |
| 2026-08-09 00:00 |
22:53:28.82 |
-48:31:59.3 |
HIP 113044 |
4.17 |
| 2026-08-09 12:00 |
22:53:27.40 |
-48:32:08.8 |
HIP 113044 |
4.11 |
| 2026-08-10 00:00 |
22:53:25.97 |
-48:32:18.2 |
HIP 113044 |
4.08 |
| 2026-08-10 12:00 |
22:53:24.53 |
-48:32:27.5 |
HIP 113044 |
4.06 |
| 2026-08-11 00:00 |
22:53:23.09 |
-48:32:36.8 |
HIP 113044 |
4.07 |
| 2026-08-11 12:00 |
22:53:21.64 |
-48:32:45.9 |
HIP 113044 |
4.10 |
| 2026-08-12 00:00 |
22:53:20.18 |
-48:32:55.1 |
HIP 113044 |
4.15 |
| 2026-08-12 12:00 |
22:53:18.72 |
-48:33:04.1 |
HIP 113044 |
4.22 |
| 2026-08-13 00:00 |
22:53:17.26 |
-48:33:13.1 |
HIP 113044 |
4.31 |
| 2026-08-13 12:00 |
22:53:15.78 |
-48:33:21.9 |
HIP 113044 |
4.42 |
| 2026-08-14 00:00 |
22:53:14.31 |
-48:33:30.8 |
HIP 113044 |
4.54 |
| 2026-08-14 12:00 |
22:53:12.83 |
-48:33:39.5 |
HIP 113044 |
4.68 |
| 2026-08-15 00:00 |
22:53:11.34 |
-48:33:48.1 |
HIP 113044 |
4.84 |
| 2026-08-15 12:00 |
22:53:09.85 |
-48:33:56.7 |
HIP 113044 |
5.00 |
| 2026-08-16 00:00 |
22:53:08.36 |
-48:34:05.2 |
HIP 113044 |
5.18 |
| 2026-08-16 12:00 |
22:53:06.86 |
-48:34:13.6 |
HIP 113044 |
5.37 |
| 2026-08-17 00:00 |
22:53:05.35 |
-48:34:22.0 |
HIP 113044 |
5.57 |
| 2026-08-17 12:00 |
22:53:03.84 |
-48:34:30.2 |
HIP 113044 |
5.77 |
| 2026-08-18 00:00 |
22:53:02.33 |
-48:34:38.4 |
HIP 113044 |
5.99 |
| 2026-08-18 12:00 |
22:53:00.81 |
-48:34:46.5 |
HIP 113044 |
6.21 |
| 2026-08-19 00:00 |
22:52:59.29 |
-48:34:54.5 |
HIP 113044 |
6.43 |