メタデータ
| 項目 |
値 |
| Designation |
411P/Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-01-23T00:31:58.823040Z |
| Orbit solution date (soln_date, UTC) |
2025-04-24T09:42:33Z |
| Obs used |
225 |
| NEO |
- |
| M1 |
14.700 |
| K1 |
10.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2020-11-17T03:08:54.816000Z |
| Discovery magnitude (MPC) |
21.70 T |
| Discovery observatory (MPC) |
Z84 · Calar Alto-Schmidt |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2013-10-24.0000000 |
| e |
0.58199405 |
| q (au) |
2.427425 |
| a (au) |
5.807155 |
| i (deg) |
12.393842 |
| Ω (om, deg) |
77.817671 |
| ω (w, deg) |
46.668360 |
| M (ma, deg) |
173.679301 |
等級
散乱 + 全体線形
$$
M_a = (12.890 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.890 |
| n |
6.000 |
| gf |
0.836 |
| gb |
-0.500 |
| k |
0.962 |
| δ90 |
1.000 |
| 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) |
| 2026-05-12 00:00 |
19:52:34.35 |
-27:55:25.4 |
HIP 97707 |
23.64 |
| 2026-05-12 12:00 |
19:52:31.35 |
-27:56:04.5 |
HIP 97707 |
22.72 |
| 2026-05-13 00:00 |
19:52:28.23 |
-27:56:43.9 |
HIP 97707 |
21.77 |
| 2026-05-13 12:00 |
19:52:24.99 |
-27:57:23.6 |
HIP 97707 |
20.81 |
| 2026-05-14 00:00 |
19:52:21.61 |
-27:58:03.5 |
HIP 97707 |
19.82 |
| 2026-05-14 12:00 |
19:52:18.11 |
-27:58:43.7 |
HIP 97707 |
18.82 |
| 2026-05-15 00:00 |
19:52:14.49 |
-27:59:24.2 |
HIP 97707 |
17.79 |
| 2026-05-15 12:00 |
19:52:10.74 |
-28:00:04.9 |
HIP 97707 |
16.75 |
| 2026-05-16 00:00 |
19:52:06.86 |
-28:00:45.9 |
HIP 97707 |
15.69 |
| 2026-05-16 12:00 |
19:52:02.86 |
-28:01:27.1 |
HIP 97707 |
14.62 |
| 2026-05-17 00:00 |
19:51:58.73 |
-28:02:08.6 |
HIP 97707 |
13.54 |
| 2026-05-17 12:00 |
19:51:54.48 |
-28:02:50.3 |
HIP 97707 |
12.46 |
| 2026-05-18 00:00 |
19:51:50.10 |
-28:03:32.2 |
HIP 97707 |
11.37 |
| 2026-05-18 12:00 |
19:51:45.60 |
-28:04:14.4 |
HIP 97707 |
10.29 |
| 2026-05-19 00:00 |
19:51:40.97 |
-28:04:56.8 |
HIP 97707 |
9.23 |
| 2026-05-19 12:00 |
19:51:36.23 |
-28:05:39.4 |
HIP 97707 |
8.21 |
| 2026-05-20 00:00 |
19:51:31.36 |
-28:06:22.2 |
HIP 97707 |
7.26 |
| 2026-05-20 12:00 |
19:51:26.36 |
-28:07:05.3 |
HIP 97707 |
6.42 |
| 2026-05-21 00:00 |
19:51:21.25 |
-28:07:48.6 |
HIP 97707 |
5.76 |
| 2026-05-21 12:00 |
19:51:16.02 |
-28:08:32.0 |
HIP 97707 |
5.38 |
| 2026-05-22 00:00 |
19:51:10.66 |
-28:09:15.7 |
HIP 97707 |
5.33 |
| 2026-05-22 12:00 |
19:51:05.18 |
-28:09:59.5 |
HIP 97707 |
5.65 |
| 2026-05-23 00:00 |
19:50:59.59 |
-28:10:43.6 |
HIP 97707 |
6.31 |
| 2026-05-23 12:00 |
19:50:53.87 |
-28:11:27.8 |
HIP 97707 |
7.22 |
| 2026-05-24 00:00 |
19:50:48.04 |
-28:12:12.2 |
HIP 97707 |
8.31 |
| 2026-05-24 12:00 |
19:50:42.09 |
-28:12:56.8 |
HIP 97707 |
9.53 |
| 2026-05-25 00:00 |
19:50:36.02 |
-28:13:41.6 |
HIP 97707 |
10.85 |
| 2026-05-25 12:00 |
19:50:29.84 |
-28:14:26.5 |
HIP 97707 |
12.25 |
| 2026-05-26 00:00 |
19:50:23.54 |
-28:15:11.6 |
HIP 97707 |
13.71 |
| 2026-05-26 12:00 |
19:50:17.12 |
-28:15:56.9 |
HIP 97707 |
15.21 |
| 2026-05-27 00:00 |
19:50:10.59 |
-28:16:42.3 |
HIP 97505 |
16.44 |
| 2026-05-27 12:00 |
19:50:03.94 |
-28:17:27.9 |
HIP 97505 |
14.79 |
| 2026-05-28 00:00 |
19:49:57.18 |
-28:18:13.6 |
HIP 97505 |
13.12 |
| 2026-05-28 12:00 |
19:49:50.31 |
-28:18:59.4 |
HIP 97505 |
11.43 |
| 2026-05-29 00:00 |
19:49:43.32 |
-28:19:45.4 |
HIP 97505 |
9.72 |
| 2026-05-29 12:00 |
19:49:36.22 |
-28:20:31.5 |
HIP 97505 |
7.98 |
| 2026-05-30 00:00 |
19:49:29.01 |
-28:21:17.7 |
HIP 97505 |
6.23 |
| 2026-05-30 12:00 |
19:49:21.69 |
-28:22:04.1 |
HIP 97505 |
4.46 |
| 2026-05-31 00:00 |
19:49:14.26 |
-28:22:50.6 |
HIP 97505 |
2.69 |
| 2026-05-31 12:00 |
19:49:06.72 |
-28:23:37.1 |
HIP 97505 |
1.08 |
| 2026-06-01 00:00 |
19:48:59.07 |
-28:24:23.8 |
HIP 97505 |
1.36 |
| 2026-06-01 12:00 |
19:48:51.31 |
-28:25:10.6 |
HIP 97505 |
3.09 |
| 2026-06-02 00:00 |
19:48:43.44 |
-28:25:57.5 |
HIP 97505 |
4.95 |