407P/PANSTARRS-Fuls
メタデータ
| 項目 |
値 |
| Designation |
407P/PANSTARRS-Fuls |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-01-31T19:46:09.442560Z |
| Orbit solution date (soln_date, UTC) |
2022-12-31T16:14:11Z |
| Obs used |
734 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
29.250 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-12-21T12:46:27.264000Z |
| Discovery magnitude (MPC) |
18.80 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2019-10-22.0000000 |
| e |
0.38496514 |
| q (au) |
2.124832 |
| a (au) |
3.454816 |
| i (deg) |
4.896248 |
| Ω (om, deg) |
80.835926 |
| ω (w, deg) |
92.339614 |
| M (ma, deg) |
344.371557 |
等級
散乱 + 全体線形
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
07:11:59.17 |
+27:01:43.2 |
HIP 34722 |
13.08 |
| 2026-02-03 12:00 |
07:11:38.52 |
+27:02:46.2 |
HIP 34722 |
11.88 |
| 2026-02-04 00:00 |
07:11:18.23 |
+27:03:47.7 |
HIP 34722 |
12.44 |
| 2026-02-04 12:00 |
07:10:58.29 |
+27:04:47.7 |
HIP 34722 |
14.49 |
| 2026-02-05 00:00 |
07:10:38.72 |
+27:05:46.3 |
HIP 34722 |
17.44 |
| 2026-02-05 12:00 |
07:10:19.52 |
+27:06:43.3 |
HIP 34722 |
20.86 |
| 2026-02-06 00:00 |
07:10:00.70 |
+27:07:38.9 |
HIP 34722 |
24.51 |
| 2026-02-06 12:00 |
07:09:42.26 |
+27:08:33.0 |
HIP 34500 |
24.88 |
| 2026-02-07 00:00 |
07:09:24.21 |
+27:09:25.6 |
HIP 34500 |
24.28 |
| 2026-02-07 12:00 |
07:09:06.56 |
+27:10:16.7 |
HIP 34500 |
24.35 |
| 2026-02-08 00:00 |
07:08:49.31 |
+27:11:06.4 |
HIP 34500 |
25.05 |
| 2026-02-08 12:00 |
07:08:32.47 |
+27:11:54.6 |
HIP 34500 |
26.28 |
| 2026-02-09 00:00 |
07:08:16.04 |
+27:12:41.4 |
HIP 34522 |
27.17 |
| 2026-02-09 12:00 |
07:08:00.03 |
+27:13:26.7 |
HIP 34522 |
28.34 |
| 2026-02-10 00:00 |
07:07:44.45 |
+27:14:10.5 |
HIP 34522 |
29.86 |
| 2026-02-10 12:00 |
07:07:29.29 |
+27:14:53.0 |
HIP 34222 |
27.27 |
| 2026-02-11 00:00 |
07:07:14.57 |
+27:15:33.9 |
HIP 34222 |
24.11 |
| 2026-02-11 12:00 |
07:07:00.29 |
+27:16:13.5 |
HIP 34222 |
21.09 |
| 2026-02-12 00:00 |
07:06:46.46 |
+27:16:51.6 |
HIP 34222 |
18.25 |
| 2026-02-12 12:00 |
07:06:33.07 |
+27:17:28.3 |
HIP 34222 |
15.61 |
| 2026-02-13 00:00 |
07:06:20.14 |
+27:18:03.6 |
HIP 34222 |
13.22 |
| 2026-02-13 12:00 |
07:06:07.66 |
+27:18:37.5 |
HIP 34222 |
11.16 |
| 2026-02-14 00:00 |
07:05:55.65 |
+27:19:10.0 |
HIP 34222 |
9.57 |
| 2026-02-14 12:00 |
07:05:44.10 |
+27:19:41.1 |
HIP 34222 |
8.59 |
| 2026-02-15 00:00 |
07:05:33.03 |
+27:20:10.9 |
HIP 34222 |
8.34 |
| 2026-02-15 12:00 |
07:05:22.42 |
+27:20:39.2 |
HIP 34222 |
8.79 |
| 2026-02-16 00:00 |
07:05:12.30 |
+27:21:06.2 |
HIP 34222 |
9.77 |
| 2026-02-16 12:00 |
07:05:02.65 |
+27:21:31.9 |
HIP 34222 |
11.08 |
| 2026-02-17 00:00 |
07:04:53.49 |
+27:21:56.1 |
HIP 34222 |
12.54 |
| 2026-02-17 12:00 |
07:04:44.82 |
+27:22:19.1 |
HIP 34222 |
14.07 |
| 2026-02-18 00:00 |
07:04:36.63 |
+27:22:40.7 |
HIP 34222 |
15.60 |
| 2026-02-18 12:00 |
07:04:28.94 |
+27:23:01.0 |
HIP 34222 |
17.10 |
| 2026-02-19 00:00 |
07:04:21.74 |
+27:23:20.0 |
HIP 34222 |
18.54 |
| 2026-02-19 12:00 |
07:04:15.04 |
+27:23:37.7 |
HIP 34222 |
19.90 |
| 2026-02-20 00:00 |
07:04:08.84 |
+27:23:54.0 |
HIP 34222 |
21.19 |
| 2026-02-20 12:00 |
07:04:03.14 |
+27:24:09.1 |
HIP 34222 |
22.38 |
| 2026-02-21 00:00 |
07:03:57.94 |
+27:24:22.9 |
HIP 34222 |
23.47 |
| 2026-02-21 12:00 |
07:03:53.24 |
+27:24:35.4 |
HIP 34222 |
24.47 |
| 2026-02-22 00:00 |
07:03:49.05 |
+27:24:46.7 |
HIP 34030 |
24.60 |
| 2026-02-22 12:00 |
07:03:45.37 |
+27:24:56.7 |
HIP 34030 |
24.69 |
| 2026-02-23 00:00 |
07:03:42.19 |
+27:25:05.5 |
HIP 34030 |
24.79 |
| 2026-02-23 12:00 |
07:03:39.53 |
+27:25:13.0 |
HIP 34030 |
24.90 |
| 2026-02-24 00:00 |
07:03:37.37 |
+27:25:19.4 |
HIP 34030 |
24.99 |