24P/Schaumasse
メタデータ
| 項目 | 値 |
|---|---|
| Designation | 24P/Schaumasse |
| Type | P |
| Perihelion (tp_cal, UTC) | 2026-01-08T14:19:34.415040Z |
| Orbit solution date (soln_date, UTC) | 2026-05-29T11:29:51Z |
| Obs used | 3346 |
| NEO | Yes |
| M1 | 14.600 |
| K1 | 7.750 |
| PC | - |
オスキュレーティング軌道要素
| 項目 | 値 |
|---|---|
| Epoch (epoch_cal, TDB) | 2023-11-26.0000000 |
| e | 0.70787325 |
| q (au) | 1.184784 |
| a (au) | 4.055719 |
| i (deg) | 11.502438 |
| Ω (om, deg) | 78.292485 |
| ω (w, deg) | 58.473930 |
| M (ma, deg) | 266.528736 |
等級
散乱 + 全体線形
$$ M_a = (11.748 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
モデル定数
| 項目 | 値 |
|---|---|
| H0 | 11.748 |
| n | 6.000 |
| gf | 1.000 |
| gb | -0.847 |
| k | 0.957 |
| 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 |
|---|---|---|---|
| 2025-01-22 | 2025-09-18 | -44.8421 | +14.706 |
| 2025-09-18 | 2026-01-08 | +20.9101 | -2.734 |
| 2026-01-09 | 2026-04-23 | +12.3052 | -2.662 |
| 2026-04-23 | 2026-06-06 | -20.8284 | +5.861 |
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 | 14:16:43.65 | -03:32:50.3 | HIP 69747 | 21.33 |
| 2026-06-01 12:00 | 14:16:36.23 | -03:37:46.9 | HIP 69651 | 22.41 |
| 2026-06-02 00:00 | 14:16:29.28 | -03:42:43.5 | HIP 69651 | 23.83 |
| 2026-06-02 12:00 | 14:16:22.79 | -03:47:39.9 | HIP 69651 | 26.30 |
| 2026-06-03 00:00 | 14:16:16.77 | -03:52:36.2 | HIP 69724 | 24.51 |
| 2026-06-03 12:00 | 14:16:11.20 | -03:57:32.4 | HIP 69724 | 19.69 |
| 2026-06-04 00:00 | 14:16:06.10 | -04:02:28.5 | HIP 69724 | 15.04 |
| 2026-06-04 12:00 | 14:16:01.44 | -04:07:24.4 | HIP 69724 | 10.77 |
| 2026-06-05 00:00 | 14:15:57.24 | -04:12:20.1 | HIP 69724 | 7.46 |
| 2026-06-05 12:00 | 14:15:53.49 | -04:17:15.7 | HIP 69724 | 6.68 |
| 2026-06-06 00:00 | 14:15:50.17 | -04:22:11.1 | HIP 69724 | 9.07 |
| 2026-06-06 12:00 | 14:15:47.30 | -04:27:06.3 | HIP 69724 | 12.95 |
| 2026-06-07 00:00 | 14:15:44.87 | -04:32:01.3 | HIP 69724 | 17.34 |
| 2026-06-07 12:00 | 14:15:42.87 | -04:36:56.1 | HIP 69572 | 21.38 |
| 2026-06-08 00:00 | 14:15:41.31 | -04:41:50.7 | HIP 69572 | 19.14 |
| 2026-06-08 12:00 | 14:15:40.17 | -04:46:45.0 | HIP 69572 | 18.12 |
| 2026-06-09 00:00 | 14:15:39.46 | -04:51:39.2 | HIP 69572 | 18.49 |
| 2026-06-09 12:00 | 14:15:39.18 | -04:56:33.1 | HIP 69572 | 20.19 |
| 2026-06-10 00:00 | 14:15:39.31 | -05:01:26.7 | HIP 69572 | 22.91 |
| 2026-06-10 12:00 | 14:15:39.86 | -05:06:20.1 | HIP 69586 | 20.53 |
| 2026-06-11 00:00 | 14:15:40.82 | -05:11:13.3 | HIP 69586 | 17.98 |
| 2026-06-11 12:00 | 14:15:42.20 | -05:16:06.2 | HIP 69586 | 16.62 |
| 2026-06-12 00:00 | 14:15:43.98 | -05:20:58.8 | HIP 69586 | 16.74 |
| 2026-06-12 12:00 | 14:15:46.17 | -05:25:51.2 | HIP 69586 | 18.33 |
| 2026-06-13 00:00 | 14:15:48.76 | -05:30:43.3 | HIP 69775 | 17.05 |
| 2026-06-13 12:00 | 14:15:51.76 | -05:35:35.1 | HIP 69775 | 14.67 |
| 2026-06-14 00:00 | 14:15:55.15 | -05:40:26.6 | HIP 69775 | 13.63 |
| 2026-06-14 12:00 | 14:15:58.93 | -05:45:17.9 | HIP 69775 | 14.22 |
| 2026-06-15 00:00 | 14:16:03.11 | -05:50:08.8 | HIP 69701 | 9.84 |
| 2026-06-15 12:00 | 14:16:07.67 | -05:54:59.5 | HIP 69701 | 5.26 |
| 2026-06-16 00:00 | 14:16:12.62 | -05:59:49.8 | HIP 69701 | 2.92 |
| 2026-06-16 12:00 | 14:16:17.95 | -06:04:39.8 | HIP 69701 | 6.33 |
| 2026-06-17 00:00 | 14:16:23.66 | -06:09:29.6 | HIP 69701 | 11.08 |
| 2026-06-17 12:00 | 14:16:29.74 | -06:14:18.9 | HIP 69701 | 16.04 |
| 2026-06-18 00:00 | 14:16:36.20 | -06:19:08.0 | HIP 69727 | 18.53 |
| 2026-06-18 12:00 | 14:16:43.02 | -06:23:56.7 | HIP 69727 | 14.39 |
| 2026-06-19 00:00 | 14:16:50.21 | -06:28:45.1 | HIP 69727 | 11.14 |
| 2026-06-19 12:00 | 14:16:57.77 | -06:33:33.1 | HIP 69727 | 9.77 |
| 2026-06-20 00:00 | 14:17:05.68 | -06:38:20.7 | HIP 69727 | 11.04 |
| 2026-06-20 12:00 | 14:17:13.94 | -06:43:08.0 | HIP 69727 | 14.29 |
| 2026-06-21 00:00 | 14:17:22.56 | -06:47:54.9 | HIP 69727 | 18.53 |
| 2026-06-21 12:00 | 14:17:31.53 | -06:52:41.4 | HIP 69933 | 19.11 |
| 2026-06-22 00:00 | 14:17:40.83 | -06:57:27.5 | HIP 69933 | 15.35 |