メタデータ
| 項目 |
値 |
| Designation |
294P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-03-03T01:25:54.598080Z |
| Orbit solution date (soln_date, UTC) |
2026-08-07T12:42:26Z |
| Obs used |
275 |
| 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) |
2012-10-28.0000000 |
| e |
0.59515147 |
| q (au) |
1.296873 |
| a (au) |
3.203352 |
| i (deg) |
18.214398 |
| Ω (om, deg) |
312.814467 |
| ω (w, deg) |
235.349279 |
| M (ma, deg) |
275.582741 |
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) |
| 2026-09-25 00:00 |
20:51:16.61 |
-11:43:00.0 |
HIP 102994 |
19.83 |
| 2026-09-25 12:00 |
20:51:07.92 |
-11:43:10.3 |
HIP 102994 |
21.20 |
| 2026-09-26 00:00 |
20:50:59.53 |
-11:43:19.8 |
HIP 102994 |
22.63 |
| 2026-09-26 12:00 |
20:50:51.45 |
-11:43:28.5 |
HIP 102994 |
24.09 |
| 2026-09-27 00:00 |
20:50:43.67 |
-11:43:36.4 |
HIP 102785 |
25.23 |
| 2026-09-27 12:00 |
20:50:36.21 |
-11:43:43.5 |
HIP 102785 |
23.94 |
| 2026-09-28 00:00 |
20:50:29.04 |
-11:43:49.7 |
HIP 102785 |
22.78 |
| 2026-09-28 12:00 |
20:50:22.18 |
-11:43:55.2 |
HIP 102785 |
21.72 |
| 2026-09-29 00:00 |
20:50:15.62 |
-11:43:59.8 |
HIP 102785 |
20.79 |
| 2026-09-29 12:00 |
20:50:09.37 |
-11:44:03.6 |
HIP 102785 |
19.97 |
| 2026-09-30 00:00 |
20:50:03.42 |
-11:44:06.5 |
HIP 102785 |
19.26 |
| 2026-09-30 12:00 |
20:49:57.77 |
-11:44:08.7 |
HIP 102785 |
18.65 |
| 2026-10-01 00:00 |
20:49:52.42 |
-11:44:10.0 |
HIP 102785 |
18.15 |
| 2026-10-01 12:00 |
20:49:47.37 |
-11:44:10.5 |
HIP 102785 |
17.74 |
| 2026-10-02 00:00 |
20:49:42.61 |
-11:44:10.1 |
HIP 102785 |
17.41 |
| 2026-10-02 12:00 |
20:49:38.16 |
-11:44:09.0 |
HIP 102785 |
17.16 |
| 2026-10-03 00:00 |
20:49:34.01 |
-11:44:07.0 |
HIP 102785 |
16.96 |
| 2026-10-03 12:00 |
20:49:30.15 |
-11:44:04.1 |
HIP 102785 |
16.82 |
| 2026-10-04 00:00 |
20:49:26.58 |
-11:44:00.4 |
HIP 102785 |
16.71 |
| 2026-10-04 12:00 |
20:49:23.32 |
-11:43:55.9 |
HIP 102785 |
16.64 |
| 2026-10-05 00:00 |
20:49:20.34 |
-11:43:50.5 |
HIP 102785 |
16.59 |
| 2026-10-05 12:00 |
20:49:17.66 |
-11:43:44.3 |
HIP 102785 |
16.54 |
| 2026-10-06 00:00 |
20:49:15.28 |
-11:43:37.2 |
HIP 102785 |
16.50 |
| 2026-10-06 12:00 |
20:49:13.18 |
-11:43:29.3 |
HIP 102785 |
16.45 |
| 2026-10-07 00:00 |
20:49:11.38 |
-11:43:20.5 |
HIP 102785 |
16.39 |
| 2026-10-07 12:00 |
20:49:09.86 |
-11:43:10.9 |
HIP 102785 |
16.32 |
| 2026-10-08 00:00 |
20:49:08.64 |
-11:43:00.4 |
HIP 102785 |
16.22 |
| 2026-10-08 12:00 |
20:49:07.70 |
-11:42:49.0 |
HIP 102785 |
16.09 |
| 2026-10-09 00:00 |
20:49:07.05 |
-11:42:36.8 |
HIP 102785 |
15.94 |
| 2026-10-09 12:00 |
20:49:06.68 |
-11:42:23.7 |
HIP 102785 |
15.76 |
| 2026-10-10 00:00 |
20:49:06.60 |
-11:42:09.8 |
HIP 102785 |
15.54 |
| 2026-10-10 12:00 |
20:49:06.80 |
-11:41:55.0 |
HIP 102785 |
15.29 |
| 2026-10-11 00:00 |
20:49:07.29 |
-11:41:39.3 |
HIP 102785 |
15.00 |
| 2026-10-11 12:00 |
20:49:08.05 |
-11:41:22.7 |
HIP 102785 |
14.69 |
| 2026-10-12 00:00 |
20:49:09.09 |
-11:41:05.3 |
HIP 102785 |
14.34 |
| 2026-10-12 12:00 |
20:49:10.41 |
-11:40:47.0 |
HIP 102785 |
13.96 |
| 2026-10-13 00:00 |
20:49:12.01 |
-11:40:27.9 |
HIP 102785 |
13.55 |
| 2026-10-13 12:00 |
20:49:13.88 |
-11:40:07.8 |
HIP 102785 |
13.12 |
| 2026-10-14 00:00 |
20:49:16.03 |
-11:39:46.9 |
HIP 102785 |
12.68 |
| 2026-10-14 12:00 |
20:49:18.44 |
-11:39:25.1 |
HIP 102785 |
12.23 |
| 2026-10-15 00:00 |
20:49:21.13 |
-11:39:02.5 |
HIP 102785 |
11.78 |
| 2026-10-15 12:00 |
20:49:24.08 |
-11:38:38.9 |
HIP 102785 |
11.36 |
| 2026-10-16 00:00 |
20:49:27.31 |
-11:38:14.5 |
HIP 102785 |
10.96 |