235P/LINEAR
メタデータ
| 項目 | 値 |
|---|---|
| Designation | 235P/LINEAR |
| Type | P |
| Perihelion (tp_cal, UTC) | 2025-12-28T03:46:49.874880Z |
| Orbit solution date (soln_date, UTC) | 2026-05-28T12:12:25Z |
| Obs used | 1308 |
| NEO | - |
| M1 | 5.300 |
| K1 | 27.000 |
| PC | 0.030 |
オスキュレーティング軌道要素
| 項目 | 値 |
|---|---|
| Epoch (epoch_cal, TDB) | 2022-11-23.0000000 |
| e | 0.34556744 |
| q (au) | 2.552751 |
| a (au) | 3.900710 |
| i (deg) | 9.447894 |
| Ω (om, deg) | 202.262491 |
| ω (w, deg) | 334.154521 |
| M (ma, deg) | 215.285608 |
等級
散乱 + 全体線形
$$ M_a = (7.904 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
モデル定数
| 項目 | 値 |
|---|---|
| H0 | 7.904 |
| n | 6.000 |
| gf | 0.998 |
| gb | -0.832 |
| k | 0.999 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) | 終了日 (UTC) | a | b |
|---|---|---|---|
| 2024-11-21 | 2025-12-27 | +21.6383 | -7.968 |
| 2025-12-28 | 2026-06-07 | +6.3225 | -2.095 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
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) |
|---|---|---|---|---|
| 2026-06-01 00:00 | 16:57:48.19 | -08:54:17.8 | HIP 83103 | 23.68 |
| 2026-06-01 12:00 | 16:57:24.51 | -08:52:12.9 | HIP 82835 | 26.11 |
| 2026-06-02 00:00 | 16:57:00.82 | -08:50:10.5 | HIP 82835 | 20.90 |
| 2026-06-02 12:00 | 16:56:37.15 | -08:48:10.6 | HIP 82835 | 16.38 |
| 2026-06-03 00:00 | 16:56:13.49 | -08:46:13.3 | HIP 82835 | 13.24 |
| 2026-06-03 12:00 | 16:55:49.86 | -08:44:18.5 | HIP 82835 | 12.53 |
| 2026-06-04 00:00 | 16:55:26.26 | -08:42:26.3 | HIP 82835 | 14.60 |
| 2026-06-04 12:00 | 16:55:02.70 | -08:40:36.7 | HIP 82835 | 18.51 |
| 2026-06-05 00:00 | 16:54:39.19 | -08:38:49.7 | HIP 82817 | 22.49 |
| 2026-06-05 12:00 | 16:54:15.74 | -08:37:05.3 | HIP 82656 | 22.26 |
| 2026-06-06 00:00 | 16:53:52.35 | -08:35:23.5 | HIP 82656 | 22.87 |
| 2026-06-06 12:00 | 16:53:29.04 | -08:33:44.4 | HIP 82656 | 24.91 |
| 2026-06-07 00:00 | 16:53:05.81 | -08:32:07.9 | HIP 82656 | 28.06 |
| 2026-06-07 12:00 | 16:52:42.68 | -08:30:34.2 | HIP 82448 | 26.60 |
| 2026-06-08 00:00 | 16:52:19.64 | -08:29:03.1 | HIP 82448 | 21.54 |
| 2026-06-08 12:00 | 16:51:56.71 | -08:27:34.7 | HIP 82448 | 17.02 |
| 2026-06-09 00:00 | 16:51:33.89 | -08:26:08.9 | HIP 82448 | 13.55 |
| 2026-06-09 12:00 | 16:51:11.19 | -08:24:45.9 | HIP 82448 | 12.01 |
| 2026-06-10 00:00 | 16:50:48.63 | -08:23:25.7 | HIP 82448 | 13.06 |
| 2026-06-10 12:00 | 16:50:26.20 | -08:22:08.1 | HIP 82448 | 16.15 |
| 2026-06-11 00:00 | 16:50:03.92 | -08:20:53.3 | HIP 82448 | 20.34 |
| 2026-06-11 12:00 | 16:49:41.79 | -08:19:41.2 | HIP 82448 | 25.05 |
| 2026-06-12 00:00 | 16:49:19.82 | -08:18:31.9 | HIP 82448 | 30.00 |
| 2026-06-12 12:00 | 16:48:58.02 | -08:17:25.3 | HIP 82448 | 35.08 |
| 2026-06-13 00:00 | 16:48:36.39 | -08:16:21.4 | HIP 82156 | 35.33 |
| 2026-06-13 12:00 | 16:48:14.96 | -08:15:20.4 | HIP 82156 | 31.26 |
| 2026-06-14 00:00 | 16:47:53.71 | -08:14:22.0 | HIP 82156 | 27.71 |
| 2026-06-14 12:00 | 16:47:32.66 | -08:13:26.5 | HIP 82156 | 24.88 |
| 2026-06-15 00:00 | 16:47:11.81 | -08:12:33.6 | HIP 82156 | 22.98 |
| 2026-06-15 12:00 | 16:46:51.18 | -08:11:43.6 | HIP 82156 | 22.21 |
| 2026-06-16 00:00 | 16:46:30.77 | -08:10:56.2 | HIP 82072 | 19.92 |
| 2026-06-16 12:00 | 16:46:10.59 | -08:10:11.6 | HIP 82072 | 18.61 |
| 2026-06-17 00:00 | 16:45:50.64 | -08:09:29.8 | HIP 82072 | 18.57 |
| 2026-06-17 12:00 | 16:45:30.93 | -08:08:50.6 | HIP 82072 | 19.77 |
| 2026-06-18 00:00 | 16:45:11.46 | -08:08:14.2 | HIP 82072 | 21.96 |
| 2026-06-18 12:00 | 16:44:52.25 | -08:07:40.5 | HIP 81882 | 19.63 |
| 2026-06-19 00:00 | 16:44:33.30 | -08:07:09.5 | HIP 81882 | 14.93 |
| 2026-06-19 12:00 | 16:44:14.61 | -08:06:41.2 | HIP 81882 | 10.32 |
| 2026-06-20 00:00 | 16:43:56.18 | -08:06:15.5 | HIP 81882 | 5.81 |
| 2026-06-20 12:00 | 16:43:38.04 | -08:05:52.5 | HIP 81882 | 1.76 |
| 2026-06-21 00:00 | 16:43:20.17 | -08:05:32.1 | HIP 81882 | 3.53 |
| 2026-06-21 12:00 | 16:43:02.59 | -08:05:14.4 | HIP 81882 | 7.74 |
| 2026-06-22 00:00 | 16:42:45.29 | -08:04:59.3 | HIP 81882 | 11.99 |