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) |
| 2026-09-20 00:00 |
09:13:58.01 |
-25:12:16.0 |
HIP 45232 |
13.88 |
| 2026-09-20 12:00 |
09:13:59.81 |
-25:12:39.7 |
HIP 45232 |
14.44 |
| 2026-09-21 00:00 |
09:14:01.61 |
-25:13:03.5 |
HIP 45232 |
14.99 |
| 2026-09-21 12:00 |
09:14:03.38 |
-25:13:27.5 |
HIP 45232 |
15.55 |
| 2026-09-22 00:00 |
09:14:05.15 |
-25:13:51.5 |
HIP 45232 |
16.10 |
| 2026-09-22 12:00 |
09:14:06.89 |
-25:14:15.6 |
HIP 45232 |
16.65 |
| 2026-09-23 00:00 |
09:14:08.63 |
-25:14:39.9 |
HIP 45232 |
17.20 |
| 2026-09-23 12:00 |
09:14:10.34 |
-25:15:04.2 |
HIP 45232 |
17.75 |
| 2026-09-24 00:00 |
09:14:12.05 |
-25:15:28.7 |
HIP 45232 |
18.30 |
| 2026-09-24 12:00 |
09:14:13.73 |
-25:15:53.3 |
HIP 45232 |
18.85 |
| 2026-09-25 00:00 |
09:14:15.40 |
-25:16:17.9 |
HIP 45232 |
19.39 |
| 2026-09-25 12:00 |
09:14:17.06 |
-25:16:42.7 |
HIP 45232 |
19.94 |
| 2026-09-26 00:00 |
09:14:18.70 |
-25:17:07.5 |
HIP 45232 |
20.48 |
| 2026-09-26 12:00 |
09:14:20.32 |
-25:17:32.4 |
HIP 45232 |
21.02 |
| 2026-09-27 00:00 |
09:14:21.93 |
-25:17:57.5 |
HIP 45232 |
21.56 |
| 2026-09-27 12:00 |
09:14:23.52 |
-25:18:22.6 |
HIP 45232 |
22.10 |
| 2026-09-28 00:00 |
09:14:25.10 |
-25:18:47.8 |
HIP 45232 |
22.64 |
| 2026-09-28 12:00 |
09:14:26.66 |
-25:19:13.1 |
HIP 45232 |
23.17 |
| 2026-09-29 00:00 |
09:14:28.20 |
-25:19:38.5 |
HIP 45232 |
23.71 |
| 2026-09-29 12:00 |
09:14:29.73 |
-25:20:03.9 |
HIP 45232 |
24.24 |
| 2026-09-30 00:00 |
09:14:31.23 |
-25:20:29.5 |
HIP 45232 |
24.77 |
| 2026-09-30 12:00 |
09:14:32.73 |
-25:20:55.1 |
HIP 45232 |
25.30 |
| 2026-10-01 00:00 |
09:14:34.20 |
-25:21:20.8 |
HIP 45232 |
25.83 |
| 2026-10-01 12:00 |
09:14:35.66 |
-25:21:46.6 |
HIP 45512 |
25.79 |
| 2026-10-02 00:00 |
09:14:37.10 |
-25:22:12.5 |
HIP 45512 |
25.53 |
| 2026-10-02 12:00 |
09:14:38.52 |
-25:22:38.4 |
HIP 45512 |
25.29 |
| 2026-10-03 00:00 |
09:14:39.93 |
-25:23:04.5 |
HIP 45512 |
25.05 |
| 2026-10-03 12:00 |
09:14:41.32 |
-25:23:30.6 |
HIP 45512 |
24.84 |
| 2026-10-04 00:00 |
09:14:42.69 |
-25:23:56.7 |
HIP 45512 |
24.63 |
| 2026-10-04 12:00 |
09:14:44.04 |
-25:24:23.0 |
HIP 45512 |
24.44 |
| 2026-10-05 00:00 |
09:14:45.37 |
-25:24:49.3 |
HIP 45512 |
24.26 |
| 2026-10-05 12:00 |
09:14:46.69 |
-25:25:15.6 |
HIP 45512 |
24.10 |
| 2026-10-06 00:00 |
09:14:47.98 |
-25:25:42.1 |
HIP 45512 |
23.96 |
| 2026-10-06 12:00 |
09:14:49.26 |
-25:26:08.6 |
HIP 45512 |
23.83 |
| 2026-10-07 00:00 |
09:14:50.52 |
-25:26:35.1 |
HIP 45512 |
23.71 |
| 2026-10-07 12:00 |
09:14:51.76 |
-25:27:01.7 |
HIP 45512 |
23.61 |
| 2026-10-08 00:00 |
09:14:52.98 |
-25:27:28.4 |
HIP 45512 |
23.53 |
| 2026-10-08 12:00 |
09:14:54.19 |
-25:27:55.1 |
HIP 45512 |
23.46 |
| 2026-10-09 00:00 |
09:14:55.37 |
-25:28:21.9 |
HIP 45512 |
23.41 |
| 2026-10-09 12:00 |
09:14:56.54 |
-25:28:48.7 |
HIP 45512 |
23.37 |
| 2026-10-10 00:00 |
09:14:57.68 |
-25:29:15.6 |
HIP 45512 |
23.35 |
| 2026-10-10 12:00 |
09:14:58.81 |
-25:29:42.6 |
HIP 45512 |
23.34 |
| 2026-10-11 00:00 |
09:14:59.91 |
-25:30:09.5 |
HIP 45512 |
23.35 |