メタデータ
| 項目 |
値 |
| Designation |
294P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-03-03T00:22:08.348160Z |
| Orbit solution date (soln_date, UTC) |
2026-07-21T13:12:12Z |
| Obs used |
272 |
| NEO |
Yes |
| M1 |
17.900 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-08-31.0000000 |
| e |
0.59532199 |
| q (au) |
1.295993 |
| a (au) |
3.202528 |
| i (deg) |
18.214766 |
| Ω (om, deg) |
312.853049 |
| ω (w, deg) |
235.337945 |
| M (ma, deg) |
265.583235 |
等級
散乱 + 全体線形
$$
M_a = (16.285 + 2.939\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.285 |
| n |
2.939 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
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) |
| 2026-07-29 00:00 |
21:36:06.49 |
-10:25:23.2 |
HIP 106709 |
19.11 |
| 2026-07-29 12:00 |
21:35:37.11 |
-10:26:02.2 |
HIP 106709 |
24.70 |
| 2026-07-30 00:00 |
21:35:07.64 |
-10:26:41.9 |
HIP 106617 |
28.83 |
| 2026-07-30 12:00 |
21:34:38.09 |
-10:27:22.3 |
HIP 106511 |
28.15 |
| 2026-07-31 00:00 |
21:34:08.46 |
-10:28:03.3 |
HIP 106365 |
23.34 |
| 2026-07-31 12:00 |
21:33:38.76 |
-10:28:45.1 |
HIP 106365 |
16.07 |
| 2026-08-01 00:00 |
21:33:08.99 |
-10:29:27.4 |
HIP 106365 |
8.88 |
| 2026-08-01 12:00 |
21:32:39.16 |
-10:30:10.4 |
HIP 106365 |
2.78 |
| 2026-08-02 00:00 |
21:32:09.27 |
-10:30:54.0 |
HIP 106365 |
6.72 |
| 2026-08-02 12:00 |
21:31:39.33 |
-10:31:38.2 |
HIP 106365 |
13.85 |
| 2026-08-03 00:00 |
21:31:09.35 |
-10:32:22.9 |
HIP 106365 |
21.18 |
| 2026-08-03 12:00 |
21:30:39.34 |
-10:33:08.2 |
HIP 106087 |
23.34 |
| 2026-08-04 00:00 |
21:30:09.29 |
-10:33:54.0 |
HIP 106087 |
18.49 |
| 2026-08-04 12:00 |
21:29:39.21 |
-10:34:40.3 |
HIP 106087 |
15.80 |
| 2026-08-05 00:00 |
21:29:09.11 |
-10:35:27.1 |
HIP 106087 |
16.37 |
| 2026-08-05 12:00 |
21:28:39.00 |
-10:36:14.3 |
HIP 106087 |
19.94 |
| 2026-08-06 00:00 |
21:28:08.87 |
-10:37:02.0 |
HIP 106087 |
25.26 |
| 2026-08-06 12:00 |
21:27:38.74 |
-10:37:50.1 |
HIP 105859 |
24.72 |
| 2026-08-07 00:00 |
21:27:08.62 |
-10:38:38.7 |
HIP 105859 |
19.40 |
| 2026-08-07 12:00 |
21:26:38.50 |
-10:39:27.6 |
HIP 105859 |
15.87 |
| 2026-08-08 00:00 |
21:26:08.40 |
-10:40:16.8 |
HIP 105805 |
11.50 |
| 2026-08-08 12:00 |
21:25:38.32 |
-10:41:06.5 |
HIP 105805 |
9.89 |
| 2026-08-09 00:00 |
21:25:08.26 |
-10:41:56.4 |
HIP 105805 |
13.20 |
| 2026-08-09 12:00 |
21:24:38.24 |
-10:42:46.6 |
HIP 105805 |
18.99 |
| 2026-08-10 00:00 |
21:24:08.25 |
-10:43:37.1 |
HIP 105589 |
16.26 |
| 2026-08-10 12:00 |
21:23:38.31 |
-10:44:27.9 |
HIP 105589 |
11.30 |
| 2026-08-11 00:00 |
21:23:08.42 |
-10:45:18.9 |
HIP 105589 |
10.05 |
| 2026-08-11 12:00 |
21:22:38.58 |
-10:46:10.1 |
HIP 105589 |
13.54 |
| 2026-08-12 00:00 |
21:22:08.81 |
-10:47:01.5 |
HIP 105504 |
16.23 |
| 2026-08-12 12:00 |
21:21:39.11 |
-10:47:53.1 |
HIP 105504 |
18.48 |
| 2026-08-13 00:00 |
21:21:09.48 |
-10:48:44.8 |
HIP 105504 |
22.97 |
| 2026-08-13 12:00 |
21:20:39.93 |
-10:49:36.6 |
HIP 105329 |
22.82 |
| 2026-08-14 00:00 |
21:20:10.47 |
-10:50:28.6 |
HIP 105329 |
22.12 |
| 2026-08-14 12:00 |
21:19:41.10 |
-10:51:20.6 |
HIP 105329 |
23.76 |
| 2026-08-15 00:00 |
21:19:11.83 |
-10:52:12.7 |
HIP 105139 |
18.89 |
| 2026-08-15 12:00 |
21:18:42.67 |
-10:53:04.8 |
HIP 105139 |
12.18 |
| 2026-08-16 00:00 |
21:18:13.61 |
-10:53:56.9 |
HIP 105139 |
6.63 |
| 2026-08-16 12:00 |
21:17:44.67 |
-10:54:49.1 |
HIP 105139 |
6.55 |
| 2026-08-17 00:00 |
21:17:15.85 |
-10:55:41.2 |
HIP 105139 |
11.98 |
| 2026-08-17 12:00 |
21:16:47.15 |
-10:56:33.2 |
HIP 105139 |
18.57 |
| 2026-08-18 00:00 |
21:16:18.59 |
-10:57:25.2 |
HIP 105139 |
25.41 |
| 2026-08-18 12:00 |
21:15:50.16 |
-10:58:17.2 |
HIP 104808 |
29.48 |
| 2026-08-19 00:00 |
21:15:21.88 |
-10:59:09.0 |
HIP 104808 |
22.94 |