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) |
| 2026-03-26 00:00 |
05:17:53.19 |
+09:04:45.1 |
HIP 24730 |
9.36 |
| 2026-03-26 12:00 |
05:17:53.54 |
+09:04:50.6 |
HIP 24730 |
9.24 |
| 2026-03-27 00:00 |
05:17:53.90 |
+09:04:56.2 |
HIP 24730 |
9.11 |
| 2026-03-27 12:00 |
05:17:54.27 |
+09:05:01.7 |
HIP 24730 |
8.99 |
| 2026-03-28 00:00 |
05:17:54.65 |
+09:05:07.2 |
HIP 24730 |
8.86 |
| 2026-03-28 12:00 |
05:17:55.05 |
+09:05:12.7 |
HIP 24730 |
8.74 |
| 2026-03-29 00:00 |
05:17:55.46 |
+09:05:18.2 |
HIP 24730 |
8.61 |
| 2026-03-29 12:00 |
05:17:55.88 |
+09:05:23.8 |
HIP 24730 |
8.48 |
| 2026-03-30 00:00 |
05:17:56.31 |
+09:05:29.3 |
HIP 24730 |
8.35 |
| 2026-03-30 12:00 |
05:17:56.75 |
+09:05:34.8 |
HIP 24730 |
8.22 |
| 2026-03-31 00:00 |
05:17:57.21 |
+09:05:40.3 |
HIP 24730 |
8.09 |
| 2026-03-31 12:00 |
05:17:57.68 |
+09:05:45.8 |
HIP 24730 |
7.96 |
| 2026-04-01 00:00 |
05:17:58.16 |
+09:05:51.3 |
HIP 24730 |
7.83 |
| 2026-04-01 12:00 |
05:17:58.65 |
+09:05:56.8 |
HIP 24730 |
7.69 |
| 2026-04-02 00:00 |
05:17:59.15 |
+09:06:02.3 |
HIP 24730 |
7.56 |
| 2026-04-02 12:00 |
05:17:59.67 |
+09:06:07.7 |
HIP 24730 |
7.43 |
| 2026-04-03 00:00 |
05:18:00.19 |
+09:06:13.2 |
HIP 24730 |
7.29 |
| 2026-04-03 12:00 |
05:18:00.73 |
+09:06:18.7 |
HIP 24730 |
7.16 |
| 2026-04-04 00:00 |
05:18:01.28 |
+09:06:24.1 |
HIP 24730 |
7.03 |
| 2026-04-04 12:00 |
05:18:01.85 |
+09:06:29.6 |
HIP 24730 |
6.89 |
| 2026-04-05 00:00 |
05:18:02.42 |
+09:06:35.0 |
HIP 24730 |
6.76 |
| 2026-04-05 12:00 |
05:18:03.00 |
+09:06:40.5 |
HIP 24730 |
6.63 |
| 2026-04-06 00:00 |
05:18:03.60 |
+09:06:45.9 |
HIP 24730 |
6.50 |
| 2026-04-06 12:00 |
05:18:04.21 |
+09:06:51.3 |
HIP 24730 |
6.37 |
| 2026-04-07 00:00 |
05:18:04.83 |
+09:06:56.7 |
HIP 24730 |
6.25 |
| 2026-04-07 12:00 |
05:18:05.46 |
+09:07:02.1 |
HIP 24730 |
6.12 |
| 2026-04-08 00:00 |
05:18:06.10 |
+09:07:07.5 |
HIP 24730 |
6.00 |
| 2026-04-08 12:00 |
05:18:06.75 |
+09:07:12.9 |
HIP 24730 |
5.88 |
| 2026-04-09 00:00 |
05:18:07.42 |
+09:07:18.3 |
HIP 24730 |
5.76 |
| 2026-04-09 12:00 |
05:18:08.09 |
+09:07:23.7 |
HIP 24730 |
5.65 |
| 2026-04-10 00:00 |
05:18:08.78 |
+09:07:29.0 |
HIP 24730 |
5.54 |
| 2026-04-10 12:00 |
05:18:09.48 |
+09:07:34.3 |
HIP 24730 |
5.44 |
| 2026-04-11 00:00 |
05:18:10.19 |
+09:07:39.7 |
HIP 24730 |
5.34 |
| 2026-04-11 12:00 |
05:18:10.90 |
+09:07:45.0 |
HIP 24730 |
5.24 |
| 2026-04-12 00:00 |
05:18:11.64 |
+09:07:50.3 |
HIP 24730 |
5.16 |
| 2026-04-12 12:00 |
05:18:12.38 |
+09:07:55.6 |
HIP 24730 |
5.07 |
| 2026-04-13 00:00 |
05:18:13.13 |
+09:08:00.8 |
HIP 24730 |
5.00 |
| 2026-04-13 12:00 |
05:18:13.89 |
+09:08:06.1 |
HIP 24730 |
4.94 |
| 2026-04-14 00:00 |
05:18:14.66 |
+09:08:11.4 |
HIP 24730 |
4.88 |
| 2026-04-14 12:00 |
05:18:15.45 |
+09:08:16.6 |
HIP 24730 |
4.83 |
| 2026-04-15 00:00 |
05:18:16.24 |
+09:08:21.8 |
HIP 24730 |
4.80 |
| 2026-04-15 12:00 |
05:18:17.05 |
+09:08:27.0 |
HIP 24730 |
4.77 |
| 2026-04-16 00:00 |
05:18:17.86 |
+09:08:32.2 |
HIP 24730 |
4.75 |