メタデータ
| 項目 |
値 |
| Designation |
P/2025 W3 (Kresken) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-03-17T01:23:50.372160Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:27Z |
| Obs used |
41 |
| NEO |
- |
| M1 |
18.700 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-11-29T03:49:57.043200Z |
| Discovery magnitude (MPC) |
22.10 G |
| 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) |
2025-12-18.0000000 |
| e |
0.18056761 |
| q (au) |
2.087186 |
| a (au) |
2.547112 |
| i (deg) |
9.744861 |
| Ω (om, deg) |
60.053173 |
| ω (w, deg) |
311.399120 |
| M (ma, deg) |
66.903591 |
等級
散乱 + 全体線形
$$
M_a = (20.000 + 3.593\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
20.000 |
| n |
3.593 |
| gf |
1.000 |
| gb |
-0.804 |
| k |
0.821 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
11:08:30.99 |
+13:22:29.6 |
HIP 54386 |
14.60 |
| 2026-09-20 12:00 |
11:09:14.56 |
+13:18:07.4 |
HIP 54618 |
23.58 |
| 2026-09-21 00:00 |
11:09:58.09 |
+13:13:45.4 |
HIP 54618 |
12.22 |
| 2026-09-21 12:00 |
11:10:41.58 |
+13:09:23.5 |
HIP 54618 |
2.26 |
| 2026-09-22 00:00 |
11:11:25.02 |
+13:05:01.8 |
HIP 54618 |
11.09 |
| 2026-09-22 12:00 |
11:12:08.41 |
+13:00:40.3 |
HIP 54730 |
12.79 |
| 2026-09-23 00:00 |
11:12:51.76 |
+12:56:19.0 |
HIP 54730 |
18.82 |
| 2026-09-23 12:00 |
11:13:35.07 |
+12:51:57.8 |
HIP 54730 |
28.37 |
| 2026-09-24 00:00 |
11:14:18.33 |
+12:47:36.8 |
HIP 55033 |
24.45 |
| 2026-09-24 12:00 |
11:15:01.55 |
+12:43:16.0 |
HIP 55029 |
14.84 |
| 2026-09-25 00:00 |
11:15:44.72 |
+12:38:55.4 |
HIP 55029 |
3.53 |
| 2026-09-25 12:00 |
11:16:27.85 |
+12:34:34.9 |
HIP 55029 |
8.00 |
| 2026-09-26 00:00 |
11:17:10.93 |
+12:30:14.7 |
HIP 55167 |
9.98 |
| 2026-09-26 12:00 |
11:17:53.97 |
+12:25:54.7 |
HIP 55167 |
3.34 |
| 2026-09-27 00:00 |
11:18:36.96 |
+12:21:34.9 |
HIP 55167 |
13.45 |
| 2026-09-27 12:00 |
11:19:19.90 |
+12:17:15.4 |
HIP 55351 |
17.59 |
| 2026-09-28 00:00 |
11:20:02.80 |
+12:12:56.0 |
HIP 55351 |
9.51 |
| 2026-09-28 12:00 |
11:20:45.66 |
+12:08:36.9 |
HIP 55351 |
11.33 |
| 2026-09-29 00:00 |
11:21:28.46 |
+12:04:18.0 |
HIP 55351 |
20.56 |
| 2026-09-29 12:00 |
11:22:11.23 |
+11:59:59.4 |
HIP 55351 |
31.19 |
| 2026-09-30 00:00 |
11:22:53.94 |
+11:55:41.0 |
HIP 55654 |
37.00 |
| 2026-09-30 12:00 |
11:23:36.61 |
+11:51:22.9 |
HIP 55716 |
32.56 |
| 2026-10-01 00:00 |
11:24:19.23 |
+11:47:05.0 |
HIP 55716 |
23.39 |
| 2026-10-01 12:00 |
11:25:01.81 |
+11:42:47.4 |
HIP 55716 |
16.98 |
| 2026-10-02 00:00 |
11:25:44.34 |
+11:38:30.0 |
HIP 55837 |
14.01 |
| 2026-10-02 12:00 |
11:26:26.82 |
+11:34:12.9 |
HIP 55837 |
3.58 |
| 2026-10-03 00:00 |
11:27:09.26 |
+11:29:56.1 |
HIP 55837 |
9.07 |
| 2026-10-03 12:00 |
11:27:51.64 |
+11:25:39.7 |
HIP 55837 |
20.10 |
| 2026-10-04 00:00 |
11:28:33.98 |
+11:21:23.5 |
HIP 55943 |
22.84 |
| 2026-10-04 12:00 |
11:29:16.28 |
+11:17:07.6 |
HIP 55943 |
25.82 |
| 2026-10-05 00:00 |
11:29:58.52 |
+11:12:52.0 |
HIP 56182 |
23.60 |
| 2026-10-05 12:00 |
11:30:40.71 |
+11:08:36.7 |
HIP 56224 |
13.07 |
| 2026-10-06 00:00 |
11:31:22.86 |
+11:04:21.8 |
HIP 56224 |
3.96 |
| 2026-10-06 12:00 |
11:32:04.95 |
+11:00:07.2 |
HIP 56224 |
10.50 |
| 2026-10-07 00:00 |
11:32:46.99 |
+10:55:52.9 |
HIP 56429 |
21.10 |
| 2026-10-07 12:00 |
11:33:28.99 |
+10:51:39.0 |
HIP 56429 |
14.03 |
| 2026-10-08 00:00 |
11:34:10.93 |
+10:47:25.5 |
HIP 56429 |
14.01 |
| 2026-10-08 12:00 |
11:34:52.82 |
+10:43:12.3 |
HIP 56553 |
16.91 |
| 2026-10-09 00:00 |
11:35:34.66 |
+10:38:59.5 |
HIP 56553 |
15.83 |
| 2026-10-09 12:00 |
11:36:16.44 |
+10:34:47.1 |
HIP 56646 |
10.76 |
| 2026-10-10 00:00 |
11:36:58.18 |
+10:30:35.0 |
HIP 56646 |
0.33 |
| 2026-10-10 12:00 |
11:37:39.86 |
+10:26:23.4 |
HIP 56646 |
11.40 |
| 2026-10-11 00:00 |
11:38:21.48 |
+10:22:12.2 |
HIP 56785 |
11.82 |