C/1964 L1 (Tomita-Gerber-Honda)
メタデータ
| 項目 |
値 |
| Designation |
C/1964 L1 (Tomita-Gerber-Honda) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1964-06-30T14:54:46.272960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:16Z |
| Obs used |
16 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1964-08-21.0000000 |
| e |
0.99593167 |
| q (au) |
0.500361 |
| a (au) |
122.989291 |
| i (deg) |
161.832267 |
| Ω (om, deg) |
309.870417 |
| ω (w, deg) |
58.423923 |
| M (ma, deg) |
0.037127 |
等級
散乱 + 全体線形
$$
M_a = (9.557 + 5.901\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.557 |
| n |
5.901 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.800 |
| 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) |
| 2026-02-03 00:00 |
05:18:25.16 |
+08:56:34.7 |
HIP 24802 |
15.88 |
| 2026-02-03 12:00 |
05:18:24.22 |
+08:56:38.2 |
HIP 24802 |
15.97 |
| 2026-02-04 00:00 |
05:18:23.30 |
+08:56:41.6 |
HIP 24802 |
16.06 |
| 2026-02-04 12:00 |
05:18:22.38 |
+08:56:45.1 |
HIP 24802 |
16.15 |
| 2026-02-05 00:00 |
05:18:21.48 |
+08:56:48.7 |
HIP 24802 |
16.24 |
| 2026-02-05 12:00 |
05:18:20.59 |
+08:56:52.3 |
HIP 24730 |
16.29 |
| 2026-02-06 00:00 |
05:18:19.71 |
+08:56:55.9 |
HIP 24730 |
16.20 |
| 2026-02-06 12:00 |
05:18:18.84 |
+08:56:59.5 |
HIP 24730 |
16.11 |
| 2026-02-07 00:00 |
05:18:17.98 |
+08:57:03.2 |
HIP 24730 |
16.03 |
| 2026-02-07 12:00 |
05:18:17.14 |
+08:57:07.0 |
HIP 24730 |
15.94 |
| 2026-02-08 00:00 |
05:18:16.30 |
+08:57:10.7 |
HIP 24730 |
15.86 |
| 2026-02-08 12:00 |
05:18:15.48 |
+08:57:14.5 |
HIP 24730 |
15.79 |
| 2026-02-09 00:00 |
05:18:14.67 |
+08:57:18.4 |
HIP 24730 |
15.71 |
| 2026-02-09 12:00 |
05:18:13.87 |
+08:57:22.3 |
HIP 24637 |
15.54 |
| 2026-02-10 00:00 |
05:18:13.08 |
+08:57:26.2 |
HIP 24637 |
15.36 |
| 2026-02-10 12:00 |
05:18:12.30 |
+08:57:30.1 |
HIP 24637 |
15.18 |
| 2026-02-11 00:00 |
05:18:11.54 |
+08:57:34.1 |
HIP 24637 |
15.01 |
| 2026-02-11 12:00 |
05:18:10.78 |
+08:57:38.1 |
HIP 24637 |
14.84 |
| 2026-02-12 00:00 |
05:18:10.04 |
+08:57:42.2 |
HIP 24637 |
14.67 |
| 2026-02-12 12:00 |
05:18:09.31 |
+08:57:46.2 |
HIP 24637 |
14.51 |
| 2026-02-13 00:00 |
05:18:08.59 |
+08:57:50.4 |
HIP 24637 |
14.35 |
| 2026-02-13 12:00 |
05:18:07.89 |
+08:57:54.5 |
HIP 24637 |
14.20 |
| 2026-02-14 00:00 |
05:18:07.20 |
+08:57:58.7 |
HIP 24637 |
14.05 |
| 2026-02-14 12:00 |
05:18:06.51 |
+08:58:02.9 |
HIP 24637 |
13.90 |
| 2026-02-15 00:00 |
05:18:05.85 |
+08:58:07.2 |
HIP 24637 |
13.75 |
| 2026-02-15 12:00 |
05:18:05.19 |
+08:58:11.5 |
HIP 24637 |
13.61 |
| 2026-02-16 00:00 |
05:18:04.55 |
+08:58:15.8 |
HIP 24637 |
13.48 |
| 2026-02-16 12:00 |
05:18:03.91 |
+08:58:20.1 |
HIP 24637 |
13.35 |
| 2026-02-17 00:00 |
05:18:03.29 |
+08:58:24.5 |
HIP 24637 |
13.22 |
| 2026-02-17 12:00 |
05:18:02.69 |
+08:58:28.9 |
HIP 24637 |
13.10 |
| 2026-02-18 00:00 |
05:18:02.09 |
+08:58:33.3 |
HIP 24637 |
12.98 |
| 2026-02-18 12:00 |
05:18:01.51 |
+08:58:37.8 |
HIP 24637 |
12.86 |
| 2026-02-19 00:00 |
05:18:00.94 |
+08:58:42.3 |
HIP 24637 |
12.75 |
| 2026-02-19 12:00 |
05:18:00.39 |
+08:58:46.8 |
HIP 24637 |
12.64 |
| 2026-02-20 00:00 |
05:17:59.84 |
+08:58:51.4 |
HIP 24637 |
12.54 |
| 2026-02-20 12:00 |
05:17:59.31 |
+08:58:55.9 |
HIP 24637 |
12.44 |
| 2026-02-21 00:00 |
05:17:58.79 |
+08:59:00.5 |
HIP 24637 |
12.35 |
| 2026-02-21 12:00 |
05:17:58.29 |
+08:59:05.2 |
HIP 24637 |
12.26 |
| 2026-02-22 00:00 |
05:17:57.79 |
+08:59:09.8 |
HIP 24637 |
12.17 |
| 2026-02-22 12:00 |
05:17:57.31 |
+08:59:14.5 |
HIP 24637 |
12.09 |
| 2026-02-23 00:00 |
05:17:56.84 |
+08:59:19.2 |
HIP 24637 |
12.01 |
| 2026-02-23 12:00 |
05:17:56.39 |
+08:59:24.0 |
HIP 24637 |
11.94 |
| 2026-02-24 00:00 |
05:17:55.95 |
+08:59:28.7 |
HIP 24637 |
11.87 |