276P/Vorobjov
メタデータ
| 項目 | 値 |
|---|---|
| Designation | 276P/Vorobjov |
| Type | P |
| Perihelion (tp_cal, UTC) | 2024-12-12T17:38:23.265600Z |
| Orbit solution date (soln_date, UTC) | 2026-03-07T14:43:35Z |
| Obs used | 1273 |
| NEO | - |
| M1 | 11.000 |
| K1 | 7.500 |
| PC | 0.030 |
オスキュレーティング軌道要素
| 項目 | 値 |
|---|---|
| Epoch (epoch_cal, TDB) | 2023-02-01.0000000 |
| e | 0.26806229 |
| q (au) | 3.898225 |
| a (au) | 5.325897 |
| i (deg) | 14.811133 |
| Ω (om, deg) | 211.347487 |
| ω (w, deg) | 199.482340 |
| M (ma, deg) | 305.412530 |
等級
散乱 + 全体線形
$$ M_a = (9.496 + 3.248\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
モデル定数
| 項目 | 値 |
|---|---|
| H0 | 9.496 |
| n | 3.248 |
| gf | 1.000 |
| gb | -0.961 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) | 終了日 (UTC) | a | b |
|---|---|---|---|
| 2019-05-02 | 2022-09-01 | -18.6910 | +15.008 |
| 2022-09-01 | 2024-12-10 | +14.4757 | -8.653 |
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 | 07:25:01.50 | +09:07:17.7 | HIP 36041 | 13.08 |
| 2026-06-01 12:00 | 07:25:29.97 | +09:06:56.8 | HIP 36041 | 9.87 |
| 2026-06-02 00:00 | 07:25:58.50 | +09:06:35.0 | HIP 36041 | 11.09 |
| 2026-06-02 12:00 | 07:26:27.09 | +09:06:12.4 | HIP 36041 | 15.77 |
| 2026-06-03 00:00 | 07:26:55.72 | +09:05:49.0 | HIP 36284 | 20.99 |
| 2026-06-03 12:00 | 07:27:24.40 | +09:05:24.8 | HIP 36284 | 14.95 |
| 2026-06-04 00:00 | 07:27:53.14 | +09:04:59.7 | HIP 36284 | 10.32 |
| 2026-06-04 12:00 | 07:28:21.92 | +09:04:33.9 | HIP 36284 | 9.52 |
| 2026-06-05 00:00 | 07:28:50.76 | +09:04:07.2 | HIP 36284 | 13.26 |
| 2026-06-05 12:00 | 07:29:19.64 | +09:03:39.7 | HIP 36284 | 19.06 |
| 2026-06-06 00:00 | 07:29:48.57 | +09:03:11.4 | HIP 36284 | 25.56 |
| 2026-06-06 12:00 | 07:30:17.54 | +09:02:42.3 | HIP 36620 | 26.74 |
| 2026-06-07 00:00 | 07:30:46.57 | +09:02:12.3 | HIP 36620 | 20.61 |
| 2026-06-07 12:00 | 07:31:15.63 | +09:01:41.6 | HIP 36620 | 15.39 |
| 2026-06-08 00:00 | 07:31:44.75 | +09:01:10.0 | HIP 36620 | 12.33 |
| 2026-06-08 12:00 | 07:32:13.90 | +09:00:37.6 | HIP 36620 | 13.08 |
| 2026-06-09 00:00 | 07:32:43.10 | +09:00:04.4 | HIP 36620 | 17.16 |
| 2026-06-09 12:00 | 07:33:12.35 | +08:59:30.4 | HIP 36733 | 20.15 |
| 2026-06-10 00:00 | 07:33:41.63 | +08:58:55.5 | HIP 36733 | 21.33 |
| 2026-06-10 12:00 | 07:34:10.96 | +08:58:19.9 | HIP 36733 | 24.70 |
| 2026-06-11 00:00 | 07:34:40.32 | +08:57:43.4 | HIP 36911 | 28.57 |
| 2026-06-11 12:00 | 07:35:09.73 | +08:57:06.1 | HIP 36911 | 26.28 |
| 2026-06-12 00:00 | 07:35:39.18 | +08:56:28.0 | HIP 37038 | 25.77 |
| 2026-06-12 12:00 | 07:36:08.66 | +08:55:49.1 | HIP 37038 | 22.78 |
| 2026-06-13 00:00 | 07:36:38.18 | +08:55:09.4 | HIP 37038 | 21.93 |
| 2026-06-13 12:00 | 07:37:07.74 | +08:54:28.9 | HIP 37038 | 23.47 |
| 2026-06-14 00:00 | 07:37:37.34 | +08:53:47.5 | HIP 37258 | 21.96 |
| 2026-06-14 12:00 | 07:38:06.97 | +08:53:05.4 | HIP 37258 | 14.78 |
| 2026-06-15 00:00 | 07:38:36.63 | +08:52:22.4 | HIP 37258 | 7.92 |
| 2026-06-15 12:00 | 07:39:06.33 | +08:51:38.7 | HIP 37258 | 3.93 |
| 2026-06-16 00:00 | 07:39:36.06 | +08:50:54.1 | HIP 37258 | 8.78 |
| 2026-06-16 12:00 | 07:40:05.82 | +08:50:08.7 | HIP 37338 | 13.42 |
| 2026-06-17 00:00 | 07:40:35.61 | +08:49:22.5 | HIP 37338 | 16.12 |
| 2026-06-17 12:00 | 07:41:05.43 | +08:48:35.6 | HIP 37408 | 19.74 |
| 2026-06-18 00:00 | 07:41:35.29 | +08:47:47.8 | HIP 37408 | 23.02 |
| 2026-06-18 12:00 | 07:42:05.17 | +08:46:59.2 | HIP 37459 | 26.62 |
| 2026-06-19 00:00 | 07:42:35.08 | +08:46:09.8 | HIP 37459 | 29.82 |
| 2026-06-19 12:00 | 07:43:05.01 | +08:45:19.7 | HIP 37657 | 30.07 |
| 2026-06-20 00:00 | 07:43:34.97 | +08:44:28.7 | HIP 37657 | 28.10 |
| 2026-06-20 12:00 | 07:44:04.96 | +08:43:37.0 | HIP 37657 | 28.04 |
| 2026-06-21 00:00 | 07:44:34.97 | +08:42:44.4 | HIP 37657 | 29.89 |
| 2026-06-21 12:00 | 07:45:05.00 | +08:41:51.1 | HIP 37657 | 33.34 |
| 2026-06-22 00:00 | 07:45:35.06 | +08:40:57.0 | HIP 37997 | 31.30 |