メタデータ
| 項目 |
値 |
| Designation |
C/2002 H2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-03-23T09:48:55.414080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:15Z |
| Obs used |
369 |
| NEO |
- |
| M1 |
13.000 |
| K1 |
5.250 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2002-05-22.0000000 |
| e |
0.99406539 |
| q (au) |
1.634840 |
| a (au) |
275.475363 |
| i (deg) |
110.501113 |
| Ω (om, deg) |
269.002033 |
| ω (w, deg) |
20.419619 |
| M (ma, deg) |
0.012846 |
等級
散乱 + 全体線形
$$
M_a = (11.548 + 3.263\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.548 |
| n |
3.263 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| 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 |
05:53:12.31 |
+24:03:20.6 |
HIP 27851 |
14.71 |
| 2026-05-12 12:00 |
05:53:14.51 |
+24:03:19.2 |
HIP 27851 |
14.57 |
| 2026-05-13 00:00 |
05:53:16.72 |
+24:03:17.9 |
HIP 27851 |
14.45 |
| 2026-05-13 12:00 |
05:53:18.95 |
+24:03:16.5 |
HIP 27851 |
14.35 |
| 2026-05-14 00:00 |
05:53:21.19 |
+24:03:15.1 |
HIP 27851 |
14.26 |
| 2026-05-14 12:00 |
05:53:23.44 |
+24:03:13.7 |
HIP 27851 |
14.19 |
| 2026-05-15 00:00 |
05:53:25.71 |
+24:03:12.3 |
HIP 27851 |
14.13 |
| 2026-05-15 12:00 |
05:53:27.99 |
+24:03:10.9 |
HIP 27851 |
14.10 |
| 2026-05-16 00:00 |
05:53:30.28 |
+24:03:09.6 |
HIP 27851 |
14.08 |
| 2026-05-16 12:00 |
05:53:32.58 |
+24:03:08.2 |
HIP 27851 |
14.09 |
| 2026-05-17 00:00 |
05:53:34.90 |
+24:03:06.8 |
HIP 27851 |
14.11 |
| 2026-05-17 12:00 |
05:53:37.23 |
+24:03:05.5 |
HIP 27851 |
14.15 |
| 2026-05-18 00:00 |
05:53:39.57 |
+24:03:04.1 |
HIP 27851 |
14.22 |
| 2026-05-18 12:00 |
05:53:41.93 |
+24:03:02.8 |
HIP 27851 |
14.30 |
| 2026-05-19 00:00 |
05:53:44.29 |
+24:03:01.4 |
HIP 27851 |
14.40 |
| 2026-05-19 12:00 |
05:53:46.67 |
+24:03:00.1 |
HIP 27851 |
14.53 |
| 2026-05-20 00:00 |
05:53:49.06 |
+24:02:58.7 |
HIP 27851 |
14.67 |
| 2026-05-20 12:00 |
05:53:51.46 |
+24:02:57.4 |
HIP 27851 |
14.83 |
| 2026-05-21 00:00 |
05:53:53.87 |
+24:02:56.0 |
HIP 27851 |
15.01 |
| 2026-05-21 12:00 |
05:53:56.29 |
+24:02:54.7 |
HIP 27851 |
15.21 |
| 2026-05-22 00:00 |
05:53:58.73 |
+24:02:53.4 |
HIP 27851 |
15.43 |
| 2026-05-22 12:00 |
05:54:01.17 |
+24:02:52.0 |
HIP 27851 |
15.66 |
| 2026-05-23 00:00 |
05:54:03.62 |
+24:02:50.7 |
HIP 27851 |
15.92 |
| 2026-05-23 12:00 |
05:54:06.09 |
+24:02:49.4 |
HIP 27851 |
16.19 |
| 2026-05-24 00:00 |
05:54:08.56 |
+24:02:48.0 |
HIP 27851 |
16.47 |
| 2026-05-24 12:00 |
05:54:11.04 |
+24:02:46.7 |
HIP 27851 |
16.77 |
| 2026-05-25 00:00 |
05:54:13.54 |
+24:02:45.4 |
HIP 27906 |
17.01 |
| 2026-05-25 12:00 |
05:54:16.04 |
+24:02:44.1 |
HIP 27906 |
17.00 |
| 2026-05-26 00:00 |
05:54:18.55 |
+24:02:42.8 |
HIP 27906 |
17.01 |
| 2026-05-26 12:00 |
05:54:21.07 |
+24:02:41.4 |
HIP 27906 |
17.04 |
| 2026-05-27 00:00 |
05:54:23.60 |
+24:02:40.1 |
HIP 27906 |
17.09 |
| 2026-05-27 12:00 |
05:54:26.14 |
+24:02:38.8 |
HIP 27906 |
17.16 |
| 2026-05-28 00:00 |
05:54:28.69 |
+24:02:37.5 |
HIP 27906 |
17.24 |
| 2026-05-28 12:00 |
05:54:31.25 |
+24:02:36.2 |
HIP 27906 |
17.35 |
| 2026-05-29 00:00 |
05:54:33.81 |
+24:02:34.9 |
HIP 27906 |
17.48 |
| 2026-05-29 12:00 |
05:54:36.38 |
+24:02:33.6 |
HIP 27906 |
17.62 |
| 2026-05-30 00:00 |
05:54:38.96 |
+24:02:32.3 |
HIP 27906 |
17.79 |
| 2026-05-30 12:00 |
05:54:41.55 |
+24:02:31.0 |
HIP 27906 |
17.97 |
| 2026-05-31 00:00 |
05:54:44.14 |
+24:02:29.7 |
HIP 27906 |
18.17 |
| 2026-05-31 12:00 |
05:54:46.75 |
+24:02:28.4 |
HIP 27906 |
18.39 |
| 2026-06-01 00:00 |
05:54:49.36 |
+24:02:27.1 |
HIP 27906 |
18.62 |
| 2026-06-01 12:00 |
05:54:51.97 |
+24:02:25.8 |
HIP 27906 |
18.88 |
| 2026-06-02 00:00 |
05:54:54.60 |
+24:02:24.6 |
HIP 27906 |
19.14 |