443P/PANSTARRS-Christensen
メタデータ
| 項目 |
値 |
| Designation |
443P/PANSTARRS-Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-10-09T17:10:55.254720Z |
| Orbit solution date (soln_date, UTC) |
2024-10-05T23:12:49Z |
| Obs used |
211 |
| 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 · Mt. Lemmon Survey |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2021-03-07.0000000 |
| e |
0.28450671 |
| q (au) |
2.956436 |
| a (au) |
4.132025 |
| i (deg) |
19.886402 |
| Ω (om, deg) |
108.960336 |
| ω (w, deg) |
145.019106 |
| M (ma, deg) |
291.739315 |
等級
散乱 + 全体線形
$$
M_a = (9.776 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.776 |
| n |
6.000 |
| gf |
0.952 |
| gb |
-0.835 |
| k |
0.999 |
| δ90 |
8.351 |
| 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 |
02:58:19.47 |
-00:37:42.0 |
HIP 13837 |
6.09 |
| 2026-02-03 12:00 |
02:58:26.16 |
-00:35:05.1 |
HIP 13837 |
9.19 |
| 2026-02-04 00:00 |
02:58:33.02 |
-00:32:27.8 |
HIP 13837 |
12.32 |
| 2026-02-04 12:00 |
02:58:40.05 |
-00:29:50.2 |
HIP 13837 |
15.47 |
| 2026-02-05 00:00 |
02:58:47.25 |
-00:27:12.3 |
HIP 13946 |
16.41 |
| 2026-02-05 12:00 |
02:58:54.63 |
-00:24:34.0 |
HIP 13946 |
16.97 |
| 2026-02-06 00:00 |
02:59:02.17 |
-00:21:55.4 |
HIP 13946 |
18.08 |
| 2026-02-06 12:00 |
02:59:09.89 |
-00:19:16.4 |
HIP 13946 |
19.65 |
| 2026-02-07 00:00 |
02:59:17.77 |
-00:16:37.2 |
HIP 13946 |
21.61 |
| 2026-02-07 12:00 |
02:59:25.82 |
-00:13:57.6 |
HIP 14033 |
20.31 |
| 2026-02-08 00:00 |
02:59:34.04 |
-00:11:17.8 |
HIP 14033 |
17.57 |
| 2026-02-08 12:00 |
02:59:42.42 |
-00:08:37.6 |
HIP 14033 |
15.04 |
| 2026-02-09 00:00 |
02:59:50.97 |
-00:05:57.2 |
HIP 14033 |
12.86 |
| 2026-02-09 12:00 |
02:59:59.68 |
-00:03:16.5 |
HIP 14033 |
11.29 |
| 2026-02-10 00:00 |
03:00:08.56 |
-00:00:35.6 |
HIP 14033 |
10.62 |
| 2026-02-10 12:00 |
03:00:17.61 |
+00:02:05.7 |
HIP 14033 |
11.03 |
| 2026-02-11 00:00 |
03:00:26.81 |
+00:04:47.1 |
HIP 13989 |
10.44 |
| 2026-02-11 12:00 |
03:00:36.18 |
+00:07:28.8 |
HIP 13989 |
9.65 |
| 2026-02-12 00:00 |
03:00:45.71 |
+00:10:10.7 |
HIP 13989 |
10.18 |
| 2026-02-12 12:00 |
03:00:55.39 |
+00:12:52.8 |
HIP 13989 |
11.87 |
| 2026-02-13 00:00 |
03:01:05.24 |
+00:15:35.2 |
HIP 13989 |
14.34 |
| 2026-02-13 12:00 |
03:01:15.25 |
+00:18:17.7 |
HIP 14113 |
16.15 |
| 2026-02-14 00:00 |
03:01:25.42 |
+00:21:00.5 |
HIP 14113 |
12.44 |
| 2026-02-14 12:00 |
03:01:35.74 |
+00:23:43.4 |
HIP 14113 |
8.69 |
| 2026-02-15 00:00 |
03:01:46.22 |
+00:26:26.5 |
HIP 14113 |
4.92 |
| 2026-02-15 12:00 |
03:01:56.85 |
+00:29:09.8 |
HIP 14113 |
1.12 |
| 2026-02-16 00:00 |
03:02:07.64 |
+00:31:53.2 |
HIP 14113 |
2.72 |
| 2026-02-16 12:00 |
03:02:18.58 |
+00:34:36.8 |
HIP 14113 |
6.59 |
| 2026-02-17 00:00 |
03:02:29.68 |
+00:37:20.6 |
HIP 14113 |
10.48 |
| 2026-02-17 12:00 |
03:02:40.93 |
+00:40:04.4 |
HIP 14164 |
10.88 |
| 2026-02-18 00:00 |
03:02:52.33 |
+00:42:48.4 |
HIP 14164 |
8.91 |
| 2026-02-18 12:00 |
03:03:03.88 |
+00:45:32.5 |
HIP 14164 |
8.49 |
| 2026-02-19 00:00 |
03:03:15.58 |
+00:48:16.8 |
HIP 14164 |
9.85 |
| 2026-02-19 12:00 |
03:03:27.43 |
+00:51:01.1 |
HIP 14164 |
12.45 |
| 2026-02-20 00:00 |
03:03:39.42 |
+00:53:45.5 |
HIP 14164 |
15.71 |
| 2026-02-20 12:00 |
03:03:51.56 |
+00:56:30.0 |
HIP 14164 |
19.31 |
| 2026-02-21 00:00 |
03:04:03.85 |
+00:59:14.6 |
HIP 14358 |
19.53 |
| 2026-02-21 12:00 |
03:04:16.28 |
+01:01:59.2 |
HIP 14358 |
18.22 |
| 2026-02-22 00:00 |
03:04:28.86 |
+01:04:43.9 |
HIP 14358 |
17.79 |
| 2026-02-22 12:00 |
03:04:41.58 |
+01:07:28.7 |
HIP 14358 |
18.30 |
| 2026-02-23 00:00 |
03:04:54.44 |
+01:10:13.5 |
HIP 14358 |
19.71 |
| 2026-02-23 12:00 |
03:05:07.44 |
+01:12:58.3 |
HIP 14358 |
21.86 |
| 2026-02-24 00:00 |
03:05:20.58 |
+01:15:43.2 |
HIP 14371 |
22.46 |