メタデータ
| 項目 |
値 |
| Designation |
P/2026 B1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2026-08-12T08:01:53.051520Z |
| Orbit solution date (soln_date, UTC) |
2026-03-31T12:12:02Z |
| Obs used |
96 |
| NEO |
- |
| M1 |
17.700 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2023-06-24.0000000 |
| e |
0.32345368 |
| q (au) |
2.460613 |
| a (au) |
3.637021 |
| i (deg) |
4.009993 |
| Ω (om, deg) |
105.175738 |
| ω (w, deg) |
73.550094 |
| M (ma, deg) |
197.251203 |
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
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) |
| 2026-05-12 00:00 |
08:46:18.30 |
+20:57:12.4 |
HIP 43061 |
20.22 |
| 2026-05-12 12:00 |
08:46:57.03 |
+20:54:42.6 |
HIP 43061 |
19.69 |
| 2026-05-13 00:00 |
08:47:35.95 |
+20:52:11.4 |
HIP 43232 |
15.31 |
| 2026-05-13 12:00 |
08:48:15.05 |
+20:49:39.0 |
HIP 43232 |
8.13 |
| 2026-05-14 00:00 |
08:48:54.32 |
+20:47:05.4 |
HIP 43232 |
8.85 |
| 2026-05-14 12:00 |
08:49:33.78 |
+20:44:30.4 |
HIP 43232 |
16.54 |
| 2026-05-15 00:00 |
08:50:13.40 |
+20:41:54.2 |
HIP 43232 |
25.58 |
| 2026-05-15 12:00 |
08:50:53.20 |
+20:39:16.8 |
HIP 43479 |
26.45 |
| 2026-05-16 00:00 |
08:51:33.18 |
+20:36:38.0 |
HIP 43479 |
28.30 |
| 2026-05-16 12:00 |
08:52:13.32 |
+20:33:58.0 |
HIP 43552 |
25.35 |
| 2026-05-17 00:00 |
08:52:53.63 |
+20:31:16.7 |
HIP 43730 |
20.94 |
| 2026-05-17 12:00 |
08:53:34.11 |
+20:28:34.2 |
HIP 43730 |
12.92 |
| 2026-05-18 00:00 |
08:54:14.75 |
+20:25:50.4 |
HIP 43730 |
9.47 |
| 2026-05-18 12:00 |
08:54:55.55 |
+20:23:05.4 |
HIP 43730 |
14.47 |
| 2026-05-19 00:00 |
08:55:36.51 |
+20:20:19.1 |
HIP 43935 |
20.67 |
| 2026-05-19 12:00 |
08:56:17.63 |
+20:17:31.5 |
HIP 43935 |
10.81 |
| 2026-05-20 00:00 |
08:56:58.91 |
+20:14:42.7 |
HIP 43935 |
2.75 |
| 2026-05-20 12:00 |
08:57:40.34 |
+20:11:52.6 |
HIP 43935 |
10.12 |
| 2026-05-21 00:00 |
08:58:21.92 |
+20:09:01.3 |
HIP 43935 |
20.10 |
| 2026-05-21 12:00 |
08:59:03.66 |
+20:06:08.8 |
HIP 44072 |
27.37 |
| 2026-05-22 00:00 |
08:59:45.54 |
+20:03:15.0 |
HIP 44072 |
33.58 |
| 2026-05-22 12:00 |
09:00:27.56 |
+20:00:19.9 |
HIP 44072 |
41.46 |
| 2026-05-23 00:00 |
09:01:09.74 |
+19:57:23.7 |
HIP 44477 |
36.81 |
| 2026-05-23 12:00 |
09:01:52.05 |
+19:54:26.2 |
HIP 44477 |
27.93 |
| 2026-05-24 00:00 |
09:02:34.51 |
+19:51:27.4 |
HIP 44477 |
20.48 |
| 2026-05-24 12:00 |
09:03:17.10 |
+19:48:27.5 |
HIP 44477 |
16.59 |
| 2026-05-25 00:00 |
09:03:59.83 |
+19:45:26.3 |
HIP 44477 |
18.72 |
| 2026-05-25 12:00 |
09:04:42.70 |
+19:42:23.9 |
HIP 44616 |
19.62 |
| 2026-05-26 00:00 |
09:05:25.70 |
+19:39:20.3 |
HIP 44616 |
13.21 |
| 2026-05-26 12:00 |
09:06:08.83 |
+19:36:15.5 |
HIP 44616 |
13.72 |
| 2026-05-27 00:00 |
09:06:52.10 |
+19:33:09.4 |
HIP 44616 |
20.70 |
| 2026-05-27 12:00 |
09:07:35.49 |
+19:30:02.2 |
HIP 44616 |
29.96 |
| 2026-05-28 00:00 |
09:08:19.01 |
+19:26:53.7 |
HIP 44964 |
32.84 |
| 2026-05-28 12:00 |
09:09:02.65 |
+19:23:44.1 |
HIP 45005 |
29.74 |
| 2026-05-29 00:00 |
09:09:46.42 |
+19:20:33.2 |
HIP 45005 |
23.52 |
| 2026-05-29 12:00 |
09:10:30.31 |
+19:17:21.1 |
HIP 45005 |
21.35 |
| 2026-05-30 00:00 |
09:11:14.32 |
+19:14:07.9 |
HIP 45074 |
21.40 |
| 2026-05-30 12:00 |
09:11:58.46 |
+19:10:53.4 |
HIP 45074 |
23.36 |
| 2026-05-31 00:00 |
09:12:42.71 |
+19:07:37.7 |
HIP 45179 |
27.58 |
| 2026-05-31 12:00 |
09:13:27.08 |
+19:04:20.9 |
HIP 45179 |
28.17 |
| 2026-06-01 00:00 |
09:14:11.56 |
+19:01:02.8 |
HIP 45456 |
27.03 |
| 2026-06-01 12:00 |
09:14:56.16 |
+18:57:43.6 |
HIP 45456 |
16.39 |
| 2026-06-02 00:00 |
09:15:40.87 |
+18:54:23.1 |
HIP 45456 |
7.12 |