メタデータ
| 項目 |
値 |
| Designation |
443P/PANSTARRS-Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-10-09T17:25:48.768960Z |
| Orbit solution date (soln_date, UTC) |
2026-06-09T11:12:50Z |
| Obs used |
215 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
17.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2005-07-05T04:57:05.184000Z |
| Discovery magnitude (MPC) |
21.40 V |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2021-03-15.0000000 |
| e |
0.28450047 |
| q (au) |
2.956429 |
| a (au) |
4.131979 |
| i (deg) |
19.886357 |
| Ω (om, deg) |
108.960208 |
| ω (w, deg) |
145.020866 |
| M (ma, deg) |
292.675732 |
等級
散乱 + 全体線形
$$
M_a = (9.779 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.779 |
| n |
6.000 |
| gf |
0.949 |
| gb |
-0.835 |
| k |
0.999 |
| δ90 |
8.175 |
| 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) |
| 2026-07-29 00:00 |
05:00:02.77 |
+10:11:42.9 |
HIP 23239 |
11.74 |
| 2026-07-29 12:00 |
05:00:22.68 |
+10:11:54.9 |
HIP 23239 |
12.65 |
| 2026-07-30 00:00 |
05:00:42.49 |
+10:12:06.3 |
HIP 23388 |
13.90 |
| 2026-07-30 12:00 |
05:01:02.21 |
+10:12:17.2 |
HIP 23388 |
9.05 |
| 2026-07-31 00:00 |
05:01:21.84 |
+10:12:27.5 |
HIP 23388 |
4.22 |
| 2026-07-31 12:00 |
05:01:41.38 |
+10:12:37.1 |
HIP 23388 |
0.59 |
| 2026-08-01 00:00 |
05:02:00.83 |
+10:12:46.2 |
HIP 23388 |
5.38 |
| 2026-08-01 12:00 |
05:02:20.18 |
+10:12:54.7 |
HIP 23388 |
10.15 |
| 2026-08-02 00:00 |
05:02:39.44 |
+10:13:02.6 |
HIP 23388 |
14.89 |
| 2026-08-02 12:00 |
05:02:58.61 |
+10:13:09.9 |
HIP 23388 |
19.60 |
| 2026-08-03 00:00 |
05:03:17.67 |
+10:13:16.7 |
HIP 23599 |
17.11 |
| 2026-08-03 12:00 |
05:03:36.65 |
+10:13:22.8 |
HIP 23599 |
12.51 |
| 2026-08-04 00:00 |
05:03:55.52 |
+10:13:28.4 |
HIP 23599 |
8.00 |
| 2026-08-04 12:00 |
05:04:14.30 |
+10:13:33.4 |
HIP 23599 |
3.85 |
| 2026-08-05 00:00 |
05:04:32.97 |
+10:13:37.8 |
HIP 23599 |
2.86 |
| 2026-08-05 12:00 |
05:04:51.55 |
+10:13:41.7 |
HIP 23599 |
6.59 |
| 2026-08-06 00:00 |
05:05:10.02 |
+10:13:45.0 |
HIP 23599 |
10.95 |
| 2026-08-06 12:00 |
05:05:28.40 |
+10:13:47.7 |
HIP 23599 |
15.39 |
| 2026-08-07 00:00 |
05:05:46.66 |
+10:13:49.8 |
HIP 23599 |
19.84 |
| 2026-08-07 12:00 |
05:06:04.83 |
+10:13:51.4 |
HIP 23599 |
24.28 |
| 2026-08-08 00:00 |
05:06:22.89 |
+10:13:52.4 |
HIP 23770 |
24.85 |
| 2026-08-08 12:00 |
05:06:40.84 |
+10:13:52.8 |
HIP 23770 |
24.84 |
| 2026-08-09 00:00 |
05:06:58.69 |
+10:13:52.7 |
HIP 23770 |
25.60 |
| 2026-08-09 12:00 |
05:07:16.43 |
+10:13:52.0 |
HIP 23770 |
27.06 |
| 2026-08-10 00:00 |
05:07:34.05 |
+10:13:50.8 |
HIP 23960 |
23.76 |
| 2026-08-10 12:00 |
05:07:51.57 |
+10:13:49.0 |
HIP 23960 |
20.07 |
| 2026-08-11 00:00 |
05:08:08.98 |
+10:13:46.6 |
HIP 23960 |
16.71 |
| 2026-08-11 12:00 |
05:08:26.27 |
+10:13:43.7 |
HIP 23960 |
13.88 |
| 2026-08-12 00:00 |
05:08:43.45 |
+10:13:40.3 |
HIP 23960 |
11.95 |
| 2026-08-12 12:00 |
05:09:00.52 |
+10:13:36.3 |
HIP 23960 |
11.35 |
| 2026-08-13 00:00 |
05:09:17.47 |
+10:13:31.7 |
HIP 23960 |
12.25 |
| 2026-08-13 12:00 |
05:09:34.31 |
+10:13:26.7 |
HIP 23960 |
14.34 |
| 2026-08-14 00:00 |
05:09:51.02 |
+10:13:21.0 |
HIP 23960 |
17.18 |
| 2026-08-14 12:00 |
05:10:07.62 |
+10:13:14.9 |
HIP 23960 |
20.44 |
| 2026-08-15 00:00 |
05:10:24.10 |
+10:13:08.2 |
HIP 24177 |
17.18 |
| 2026-08-15 12:00 |
05:10:40.46 |
+10:13:01.0 |
HIP 24177 |
13.41 |
| 2026-08-16 00:00 |
05:10:56.70 |
+10:12:53.3 |
HIP 24177 |
9.87 |
| 2026-08-16 12:00 |
05:11:12.82 |
+10:12:45.1 |
HIP 24177 |
6.87 |
| 2026-08-17 00:00 |
05:11:28.81 |
+10:12:36.3 |
HIP 24177 |
5.32 |
| 2026-08-17 12:00 |
05:11:44.68 |
+10:12:27.1 |
HIP 24177 |
6.33 |
| 2026-08-18 00:00 |
05:12:00.43 |
+10:12:17.3 |
HIP 24177 |
9.05 |
| 2026-08-18 12:00 |
05:12:16.05 |
+10:12:07.0 |
HIP 24177 |
12.37 |
| 2026-08-19 00:00 |
05:12:31.54 |
+10:11:56.3 |
HIP 24273 |
12.58 |