メタデータ
| 項目 |
値 |
| Designation |
155P/Shoemaker 3 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2002-12-08T02:13:30.930240Z |
| Orbit solution date (soln_date, UTC) |
2022-12-31T16:13:39Z |
| Obs used |
1966 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
12.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-05-21.0000000 |
| e |
0.72610716 |
| q (au) |
1.806142 |
| a (au) |
6.594337 |
| i (deg) |
6.398094 |
| Ω (om, deg) |
97.276219 |
| ω (w, deg) |
14.601886 |
| M (ma, deg) |
179.609901 |
等級
散乱 + 全体線形
$$
M_a = (10.890 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.890 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
19:06:28.06 |
-23:10:37.4 |
HIP 93832 |
4.68 |
| 2026-06-01 12:00 |
19:06:19.89 |
-23:10:54.5 |
HIP 93832 |
5.15 |
| 2026-06-02 00:00 |
19:06:11.66 |
-23:11:11.6 |
HIP 93832 |
6.21 |
| 2026-06-02 12:00 |
19:06:03.35 |
-23:11:28.9 |
HIP 93832 |
7.62 |
| 2026-06-03 00:00 |
19:05:54.98 |
-23:11:46.2 |
HIP 93832 |
9.23 |
| 2026-06-03 12:00 |
19:05:46.55 |
-23:12:03.5 |
HIP 93832 |
10.97 |
| 2026-06-04 00:00 |
19:05:38.05 |
-23:12:20.9 |
HIP 93832 |
12.78 |
| 2026-06-04 12:00 |
19:05:29.49 |
-23:12:38.4 |
HIP 93832 |
14.65 |
| 2026-06-05 00:00 |
19:05:20.86 |
-23:12:56.0 |
HIP 93832 |
16.56 |
| 2026-06-05 12:00 |
19:05:12.18 |
-23:13:13.5 |
HIP 93832 |
18.51 |
| 2026-06-06 00:00 |
19:05:03.43 |
-23:13:31.2 |
HIP 93832 |
20.48 |
| 2026-06-06 12:00 |
19:04:54.62 |
-23:13:48.9 |
HIP 93649 |
22.08 |
| 2026-06-07 00:00 |
19:04:45.75 |
-23:14:06.6 |
HIP 93649 |
21.58 |
| 2026-06-07 12:00 |
19:04:36.83 |
-23:14:24.4 |
HIP 93649 |
21.26 |
| 2026-06-08 00:00 |
19:04:27.84 |
-23:14:42.2 |
HIP 93649 |
21.15 |
| 2026-06-08 12:00 |
19:04:18.80 |
-23:15:00.1 |
HIP 93649 |
21.24 |
| 2026-06-09 00:00 |
19:04:09.70 |
-23:15:18.0 |
HIP 93649 |
21.53 |
| 2026-06-09 12:00 |
19:04:00.55 |
-23:15:36.0 |
HIP 93649 |
22.03 |
| 2026-06-10 00:00 |
19:03:51.34 |
-23:15:54.0 |
HIP 93649 |
22.73 |
| 2026-06-10 12:00 |
19:03:42.08 |
-23:16:12.0 |
HIP 93649 |
23.60 |
| 2026-06-11 00:00 |
19:03:32.77 |
-23:16:30.1 |
HIP 93508 |
22.19 |
| 2026-06-11 12:00 |
19:03:23.40 |
-23:16:48.1 |
HIP 93508 |
20.78 |
| 2026-06-12 00:00 |
19:03:13.99 |
-23:17:06.3 |
HIP 93508 |
19.51 |
| 2026-06-12 12:00 |
19:03:04.52 |
-23:17:24.4 |
HIP 93508 |
18.40 |
| 2026-06-13 00:00 |
19:02:55.01 |
-23:17:42.6 |
HIP 93508 |
17.50 |
| 2026-06-13 12:00 |
19:02:45.44 |
-23:18:00.7 |
HIP 93508 |
16.83 |
| 2026-06-14 00:00 |
19:02:35.84 |
-23:18:19.0 |
HIP 93508 |
16.44 |
| 2026-06-14 12:00 |
19:02:26.18 |
-23:18:37.2 |
HIP 93405 |
15.12 |
| 2026-06-15 00:00 |
19:02:16.48 |
-23:18:55.4 |
HIP 93405 |
13.15 |
| 2026-06-15 12:00 |
19:02:06.74 |
-23:19:13.7 |
HIP 93405 |
11.28 |
| 2026-06-16 00:00 |
19:01:56.95 |
-23:19:31.9 |
HIP 93405 |
9.57 |
| 2026-06-16 12:00 |
19:01:47.13 |
-23:19:50.2 |
HIP 93405 |
8.13 |
| 2026-06-17 00:00 |
19:01:37.26 |
-23:20:08.5 |
HIP 93405 |
7.14 |
| 2026-06-17 12:00 |
19:01:27.36 |
-23:20:26.8 |
HIP 93405 |
6.80 |
| 2026-06-18 00:00 |
19:01:17.41 |
-23:20:45.0 |
HIP 93405 |
7.21 |
| 2026-06-18 12:00 |
19:01:07.43 |
-23:21:03.3 |
HIP 93405 |
8.28 |
| 2026-06-19 00:00 |
19:00:57.42 |
-23:21:21.6 |
HIP 93405 |
9.79 |
| 2026-06-19 12:00 |
19:00:47.37 |
-23:21:39.9 |
HIP 93405 |
11.58 |
| 2026-06-20 00:00 |
19:00:37.28 |
-23:21:58.1 |
HIP 93405 |
13.54 |
| 2026-06-20 12:00 |
19:00:27.16 |
-23:22:16.4 |
HIP 93239 |
14.66 |
| 2026-06-21 00:00 |
19:00:17.02 |
-23:22:34.6 |
HIP 93239 |
12.75 |
| 2026-06-21 12:00 |
19:00:06.84 |
-23:22:52.8 |
HIP 93239 |
11.01 |
| 2026-06-22 00:00 |
18:59:56.63 |
-23:23:11.0 |
HIP 93239 |
9.53 |