415P/Tenagra
メタデータ
| 項目 |
値 |
| Designation |
415P/Tenagra |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2021-02-16T03:55:08.005440Z |
| Orbit solution date (soln_date, UTC) |
2025-04-09T14:05:50Z |
| Obs used |
199 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
19.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-12-25T13:33:49.824000Z |
| Discovery magnitude (MPC) |
21.10 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2018-11-04.0000000 |
| e |
0.19516380 |
| q (au) |
3.311953 |
| a (au) |
4.115065 |
| i (deg) |
31.789340 |
| Ω (om, deg) |
160.325572 |
| ω (w, deg) |
346.450161 |
| M (ma, deg) |
261.392377 |
等級
散乱 + 全体線形
$$
M_a = (10.505 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.505 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.732 |
| k |
0.964 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
23:04:41.38 |
-10:49:03.6 |
HIP 114051 |
17.35 |
| 2026-02-03 12:00 |
23:05:06.99 |
-10:47:25.7 |
HIP 114051 |
12.08 |
| 2026-02-04 00:00 |
23:05:32.65 |
-10:45:47.5 |
HIP 114051 |
8.68 |
| 2026-02-04 12:00 |
23:05:58.35 |
-10:44:09.0 |
HIP 114051 |
9.46 |
| 2026-02-05 00:00 |
23:06:24.11 |
-10:42:30.1 |
HIP 114051 |
13.75 |
| 2026-02-05 12:00 |
23:06:49.92 |
-10:40:50.9 |
HIP 114051 |
19.36 |
| 2026-02-06 00:00 |
23:07:15.77 |
-10:39:11.4 |
HIP 114056 |
23.99 |
| 2026-02-06 12:00 |
23:07:41.67 |
-10:37:31.6 |
HIP 114056 |
28.87 |
| 2026-02-07 00:00 |
23:08:07.62 |
-10:35:51.4 |
HIP 114380 |
27.40 |
| 2026-02-07 12:00 |
23:08:33.62 |
-10:34:10.9 |
HIP 114380 |
20.83 |
| 2026-02-08 00:00 |
23:08:59.66 |
-10:32:30.2 |
HIP 114380 |
14.26 |
| 2026-02-08 12:00 |
23:09:25.75 |
-10:30:49.1 |
HIP 114380 |
7.77 |
| 2026-02-09 00:00 |
23:09:51.89 |
-10:29:07.7 |
HIP 114380 |
2.31 |
| 2026-02-09 12:00 |
23:10:18.06 |
-10:27:26.1 |
HIP 114380 |
6.22 |
| 2026-02-10 00:00 |
23:10:44.28 |
-10:25:44.2 |
HIP 114506 |
11.96 |
| 2026-02-10 12:00 |
23:11:10.55 |
-10:24:02.0 |
HIP 114506 |
7.93 |
| 2026-02-11 00:00 |
23:11:36.85 |
-10:22:19.5 |
HIP 114506 |
8.47 |
| 2026-02-11 12:00 |
23:12:03.20 |
-10:20:36.8 |
HIP 114506 |
13.06 |
| 2026-02-12 00:00 |
23:12:29.59 |
-10:18:53.8 |
HIP 114666 |
17.74 |
| 2026-02-12 12:00 |
23:12:56.02 |
-10:17:10.6 |
HIP 114666 |
11.41 |
| 2026-02-13 00:00 |
23:13:22.49 |
-10:15:27.1 |
HIP 114666 |
5.99 |
| 2026-02-13 12:00 |
23:13:48.99 |
-10:13:43.4 |
HIP 114666 |
5.69 |
| 2026-02-14 00:00 |
23:14:15.54 |
-10:11:59.5 |
HIP 114666 |
10.96 |
| 2026-02-14 12:00 |
23:14:42.12 |
-10:10:15.4 |
HIP 114666 |
17.31 |
| 2026-02-15 00:00 |
23:15:08.74 |
-10:08:31.0 |
HIP 114858 |
17.68 |
| 2026-02-15 12:00 |
23:15:35.40 |
-10:06:46.4 |
HIP 114906 |
14.25 |
| 2026-02-16 00:00 |
23:16:02.09 |
-10:05:01.7 |
HIP 114906 |
9.98 |
| 2026-02-16 12:00 |
23:16:28.81 |
-10:03:16.7 |
HIP 114906 |
9.41 |
| 2026-02-17 00:00 |
23:16:55.57 |
-10:01:31.5 |
HIP 114906 |
13.05 |
| 2026-02-17 12:00 |
23:17:22.37 |
-09:59:46.2 |
HIP 114906 |
18.59 |
| 2026-02-18 00:00 |
23:17:49.20 |
-09:58:00.7 |
HIP 114906 |
24.78 |
| 2026-02-18 12:00 |
23:18:16.05 |
-09:56:15.0 |
HIP 115115 |
22.12 |
| 2026-02-19 00:00 |
23:18:42.94 |
-09:54:29.2 |
HIP 115115 |
18.21 |
| 2026-02-19 12:00 |
23:19:09.86 |
-09:52:43.2 |
HIP 115160 |
14.08 |
| 2026-02-20 00:00 |
23:19:36.81 |
-09:50:57.0 |
HIP 115160 |
10.36 |
| 2026-02-20 12:00 |
23:20:03.79 |
-09:49:10.7 |
HIP 115160 |
10.53 |
| 2026-02-21 00:00 |
23:20:30.80 |
-09:47:24.3 |
HIP 115160 |
14.47 |
| 2026-02-21 12:00 |
23:20:57.84 |
-09:45:37.8 |
HIP 115347 |
13.06 |
| 2026-02-22 00:00 |
23:21:24.90 |
-09:43:51.1 |
HIP 115347 |
6.65 |
| 2026-02-22 12:00 |
23:21:51.99 |
-09:42:04.4 |
HIP 115347 |
3.62 |
| 2026-02-23 00:00 |
23:22:19.10 |
-09:40:17.5 |
HIP 115347 |
8.80 |
| 2026-02-23 12:00 |
23:22:46.24 |
-09:38:30.5 |
HIP 115347 |
15.42 |
| 2026-02-24 00:00 |
23:23:13.40 |
-09:36:43.5 |
HIP 115457 |
13.66 |