メタデータ
| 項目 |
値 |
| Designation |
C/2000 H1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-01-29T06:37:45.935040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:04Z |
| Obs used |
112 |
| NEO |
- |
| M1 |
13.500 |
| 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) |
2000-06-10.0000000 |
| e |
1.00207029 |
| q (au) |
3.638124 |
| a (au) |
-1757.299516 |
| i (deg) |
118.236996 |
| Ω (om, deg) |
356.443281 |
| ω (w, deg) |
78.874677 |
| M (ma, deg) |
0.001776 |
等級
散乱 + 全体線形
$$
M_a = (6.510 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.510 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-07-29 00:00 |
09:09:56.73 |
-24:45:03.6 |
HIP 44785 |
43.64 |
| 2026-07-29 12:00 |
09:09:59.16 |
-24:45:09.1 |
HIP 44785 |
43.97 |
| 2026-07-30 00:00 |
09:10:01.59 |
-24:45:14.8 |
HIP 44785 |
44.30 |
| 2026-07-30 12:00 |
09:10:04.02 |
-24:45:20.7 |
HIP 44785 |
44.64 |
| 2026-07-31 00:00 |
09:10:06.45 |
-24:45:26.8 |
HIP 45245 |
44.82 |
| 2026-07-31 12:00 |
09:10:08.89 |
-24:45:33.2 |
HIP 45245 |
44.30 |
| 2026-08-01 00:00 |
09:10:11.33 |
-24:45:39.7 |
HIP 45245 |
43.77 |
| 2026-08-01 12:00 |
09:10:13.77 |
-24:45:46.5 |
HIP 45245 |
43.25 |
| 2026-08-02 00:00 |
09:10:16.21 |
-24:45:53.5 |
HIP 45245 |
42.72 |
| 2026-08-02 12:00 |
09:10:18.66 |
-24:46:00.6 |
HIP 45245 |
42.20 |
| 2026-08-03 00:00 |
09:10:21.10 |
-24:46:08.0 |
HIP 45245 |
41.68 |
| 2026-08-03 12:00 |
09:10:23.55 |
-24:46:15.6 |
HIP 45245 |
41.17 |
| 2026-08-04 00:00 |
09:10:26.00 |
-24:46:23.4 |
HIP 45245 |
40.65 |
| 2026-08-04 12:00 |
09:10:28.45 |
-24:46:31.4 |
HIP 45245 |
40.14 |
| 2026-08-05 00:00 |
09:10:30.91 |
-24:46:39.6 |
HIP 45232 |
39.60 |
| 2026-08-05 12:00 |
09:10:33.36 |
-24:46:48.0 |
HIP 45232 |
39.04 |
| 2026-08-06 00:00 |
09:10:35.81 |
-24:46:56.6 |
HIP 45232 |
38.48 |
| 2026-08-06 12:00 |
09:10:38.27 |
-24:47:05.4 |
HIP 45232 |
37.92 |
| 2026-08-07 00:00 |
09:10:40.72 |
-24:47:14.5 |
HIP 45232 |
37.36 |
| 2026-08-07 12:00 |
09:10:43.18 |
-24:47:23.7 |
HIP 45232 |
36.80 |
| 2026-08-08 00:00 |
09:10:45.63 |
-24:47:33.1 |
HIP 45232 |
36.23 |
| 2026-08-08 12:00 |
09:10:48.09 |
-24:47:42.8 |
HIP 45232 |
35.67 |
| 2026-08-09 00:00 |
09:10:50.55 |
-24:47:52.6 |
HIP 45232 |
35.10 |
| 2026-08-09 12:00 |
09:10:53.00 |
-24:48:02.6 |
HIP 45232 |
34.54 |
| 2026-08-10 00:00 |
09:10:55.45 |
-24:48:12.9 |
HIP 45232 |
33.97 |
| 2026-08-10 12:00 |
09:10:57.91 |
-24:48:23.3 |
HIP 45232 |
33.40 |
| 2026-08-11 00:00 |
09:11:00.36 |
-24:48:34.0 |
HIP 45232 |
32.83 |
| 2026-08-11 12:00 |
09:11:02.81 |
-24:48:44.8 |
HIP 45232 |
32.26 |
| 2026-08-12 00:00 |
09:11:05.26 |
-24:48:55.9 |
HIP 45232 |
31.68 |
| 2026-08-12 12:00 |
09:11:07.71 |
-24:49:07.1 |
HIP 45232 |
31.11 |
| 2026-08-13 00:00 |
09:11:10.16 |
-24:49:18.5 |
HIP 45232 |
30.54 |
| 2026-08-13 12:00 |
09:11:12.60 |
-24:49:30.2 |
HIP 45232 |
29.96 |
| 2026-08-14 00:00 |
09:11:15.04 |
-24:49:42.0 |
HIP 45232 |
29.39 |
| 2026-08-14 12:00 |
09:11:17.48 |
-24:49:54.0 |
HIP 45232 |
28.81 |
| 2026-08-15 00:00 |
09:11:19.92 |
-24:50:06.3 |
HIP 45232 |
28.23 |
| 2026-08-15 12:00 |
09:11:22.36 |
-24:50:18.7 |
HIP 45232 |
27.65 |
| 2026-08-16 00:00 |
09:11:24.79 |
-24:50:31.3 |
HIP 45232 |
27.08 |
| 2026-08-16 12:00 |
09:11:27.22 |
-24:50:44.1 |
HIP 45232 |
26.50 |
| 2026-08-17 00:00 |
09:11:29.64 |
-24:50:57.1 |
HIP 45232 |
25.92 |
| 2026-08-17 12:00 |
09:11:32.06 |
-24:51:10.3 |
HIP 45232 |
25.34 |
| 2026-08-18 00:00 |
09:11:34.48 |
-24:51:23.6 |
HIP 45232 |
24.76 |
| 2026-08-18 12:00 |
09:11:36.90 |
-24:51:37.2 |
HIP 45232 |
24.17 |
| 2026-08-19 00:00 |
09:11:39.31 |
-24:51:50.9 |
HIP 45232 |
23.59 |