メタデータ
| 項目 |
値 |
| Designation |
C/1966 P1 (Kilston) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1966-10-28T01:52:48.731520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:17Z |
| Obs used |
208 |
| NEO |
- |
| M1 |
5.000 |
| K1 |
8.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1966-09-09.0000000 |
| e |
0.99948025 |
| q (au) |
2.384769 |
| a (au) |
4588.291435 |
| i (deg) |
40.264536 |
| Ω (om, deg) |
156.051601 |
| ω (w, deg) |
154.485693 |
| M (ma, deg) |
359.999844 |
等級
散乱 + 全体線形
$$
M_a = (5.337 + 3.100\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.337 |
| n |
3.100 |
| gf |
0.886 |
| gb |
-0.500 |
| k |
0.926 |
| δ90 |
1.000 |
| 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) |
| 2026-05-12 00:00 |
07:39:39.60 |
-05:56:20.1 |
HIP 37260 |
18.10 |
| 2026-05-12 12:00 |
07:39:40.27 |
-05:56:12.8 |
HIP 37260 |
18.07 |
| 2026-05-13 00:00 |
07:39:40.96 |
-05:56:05.5 |
HIP 37260 |
18.04 |
| 2026-05-13 12:00 |
07:39:41.66 |
-05:55:58.3 |
HIP 37260 |
18.02 |
| 2026-05-14 00:00 |
07:39:42.37 |
-05:55:51.1 |
HIP 37260 |
18.00 |
| 2026-05-14 12:00 |
07:39:43.08 |
-05:55:44.0 |
HIP 37260 |
17.99 |
| 2026-05-15 00:00 |
07:39:43.81 |
-05:55:37.0 |
HIP 37260 |
17.98 |
| 2026-05-15 12:00 |
07:39:44.55 |
-05:55:30.0 |
HIP 37260 |
17.97 |
| 2026-05-16 00:00 |
07:39:45.30 |
-05:55:23.1 |
HIP 37260 |
17.97 |
| 2026-05-16 12:00 |
07:39:46.06 |
-05:55:16.3 |
HIP 37260 |
17.98 |
| 2026-05-17 00:00 |
07:39:46.83 |
-05:55:09.6 |
HIP 37260 |
17.99 |
| 2026-05-17 12:00 |
07:39:47.60 |
-05:55:02.9 |
HIP 37260 |
18.01 |
| 2026-05-18 00:00 |
07:39:48.39 |
-05:54:56.2 |
HIP 37260 |
18.03 |
| 2026-05-18 12:00 |
07:39:49.19 |
-05:54:49.7 |
HIP 37260 |
18.05 |
| 2026-05-19 00:00 |
07:39:50.00 |
-05:54:43.2 |
HIP 37260 |
18.09 |
| 2026-05-19 12:00 |
07:39:50.81 |
-05:54:36.8 |
HIP 37260 |
18.12 |
| 2026-05-20 00:00 |
07:39:51.64 |
-05:54:30.5 |
HIP 37260 |
18.16 |
| 2026-05-20 12:00 |
07:39:52.47 |
-05:54:24.2 |
HIP 37260 |
18.21 |
| 2026-05-21 00:00 |
07:39:53.32 |
-05:54:18.0 |
HIP 37260 |
18.26 |
| 2026-05-21 12:00 |
07:39:54.17 |
-05:54:11.9 |
HIP 37260 |
18.32 |
| 2026-05-22 00:00 |
07:39:55.04 |
-05:54:05.8 |
HIP 37260 |
18.38 |
| 2026-05-22 12:00 |
07:39:55.91 |
-05:53:59.8 |
HIP 37260 |
18.45 |
| 2026-05-23 00:00 |
07:39:56.79 |
-05:53:53.9 |
HIP 37260 |
18.53 |
| 2026-05-23 12:00 |
07:39:57.68 |
-05:53:48.1 |
HIP 37260 |
18.61 |
| 2026-05-24 00:00 |
07:39:58.58 |
-05:53:42.3 |
HIP 37260 |
18.69 |
| 2026-05-24 12:00 |
07:39:59.49 |
-05:53:36.6 |
HIP 37260 |
18.78 |
| 2026-05-25 00:00 |
07:40:00.41 |
-05:53:31.0 |
HIP 37260 |
18.87 |
| 2026-05-25 12:00 |
07:40:01.34 |
-05:53:25.5 |
HIP 37260 |
18.97 |
| 2026-05-26 00:00 |
07:40:02.27 |
-05:53:20.0 |
HIP 37260 |
19.08 |
| 2026-05-26 12:00 |
07:40:03.21 |
-05:53:14.6 |
HIP 37260 |
19.19 |
| 2026-05-27 00:00 |
07:40:04.17 |
-05:53:09.3 |
HIP 37260 |
19.30 |
| 2026-05-27 12:00 |
07:40:05.13 |
-05:53:04.1 |
HIP 37260 |
19.42 |
| 2026-05-28 00:00 |
07:40:06.10 |
-05:52:58.9 |
HIP 37260 |
19.54 |
| 2026-05-28 12:00 |
07:40:07.07 |
-05:52:53.8 |
HIP 37260 |
19.67 |
| 2026-05-29 00:00 |
07:40:08.06 |
-05:52:48.8 |
HIP 37260 |
19.81 |
| 2026-05-29 12:00 |
07:40:09.05 |
-05:52:43.9 |
HIP 37260 |
19.95 |
| 2026-05-30 00:00 |
07:40:10.06 |
-05:52:39.0 |
HIP 37260 |
20.09 |
| 2026-05-30 12:00 |
07:40:11.07 |
-05:52:34.2 |
HIP 37260 |
20.24 |
| 2026-05-31 00:00 |
07:40:12.08 |
-05:52:29.5 |
HIP 37260 |
20.39 |
| 2026-05-31 12:00 |
07:40:13.11 |
-05:52:24.9 |
HIP 37260 |
20.55 |
| 2026-06-01 00:00 |
07:40:14.14 |
-05:52:20.3 |
HIP 37260 |
20.72 |
| 2026-06-01 12:00 |
07:40:15.18 |
-05:52:15.8 |
HIP 37260 |
20.88 |
| 2026-06-02 00:00 |
07:40:16.23 |
-05:52:11.4 |
HIP 37260 |
21.05 |