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) |
| 2026-06-01 00:00 |
05:20:06.32 |
+09:14:35.6 |
HIP 24802 |
16.52 |
| 2026-06-01 12:00 |
05:20:07.74 |
+09:14:37.9 |
HIP 24802 |
16.87 |
| 2026-06-02 00:00 |
05:20:09.15 |
+09:14:40.2 |
HIP 24802 |
17.21 |
| 2026-06-02 12:00 |
05:20:10.57 |
+09:14:42.5 |
HIP 24802 |
17.56 |
| 2026-06-03 00:00 |
05:20:11.99 |
+09:14:44.7 |
HIP 24802 |
17.90 |
| 2026-06-03 12:00 |
05:20:13.41 |
+09:14:46.8 |
HIP 24802 |
18.25 |
| 2026-06-04 00:00 |
05:20:14.84 |
+09:14:48.9 |
HIP 24802 |
18.60 |
| 2026-06-04 12:00 |
05:20:16.26 |
+09:14:51.0 |
HIP 24802 |
18.94 |
| 2026-06-05 00:00 |
05:20:17.69 |
+09:14:53.0 |
HIP 24802 |
19.29 |
| 2026-06-05 12:00 |
05:20:19.12 |
+09:14:55.0 |
HIP 24802 |
19.64 |
| 2026-06-06 00:00 |
05:20:20.55 |
+09:14:57.0 |
HIP 24802 |
19.99 |
| 2026-06-06 12:00 |
05:20:21.98 |
+09:14:58.9 |
HIP 24802 |
20.33 |
| 2026-06-07 00:00 |
05:20:23.41 |
+09:15:00.7 |
HIP 24802 |
20.68 |
| 2026-06-07 12:00 |
05:20:24.84 |
+09:15:02.6 |
HIP 24802 |
21.03 |
| 2026-06-08 00:00 |
05:20:26.28 |
+09:15:04.3 |
HIP 24802 |
21.38 |
| 2026-06-08 12:00 |
05:20:27.71 |
+09:15:06.1 |
HIP 24802 |
21.73 |
| 2026-06-09 00:00 |
05:20:29.15 |
+09:15:07.7 |
HIP 24802 |
22.08 |
| 2026-06-09 12:00 |
05:20:30.59 |
+09:15:09.4 |
HIP 24802 |
22.43 |
| 2026-06-10 00:00 |
05:20:32.03 |
+09:15:11.0 |
HIP 24802 |
22.78 |
| 2026-06-10 12:00 |
05:20:33.46 |
+09:15:12.6 |
HIP 24802 |
23.13 |
| 2026-06-11 00:00 |
05:20:34.90 |
+09:15:14.1 |
HIP 24802 |
23.48 |
| 2026-06-11 12:00 |
05:20:36.34 |
+09:15:15.5 |
HIP 24802 |
23.83 |
| 2026-06-12 00:00 |
05:20:37.78 |
+09:15:17.0 |
HIP 24802 |
24.18 |
| 2026-06-12 12:00 |
05:20:39.22 |
+09:15:18.3 |
HIP 24802 |
24.53 |
| 2026-06-13 00:00 |
05:20:40.66 |
+09:15:19.7 |
HIP 24802 |
24.88 |
| 2026-06-13 12:00 |
05:20:42.09 |
+09:15:21.0 |
HIP 24802 |
25.23 |
| 2026-06-14 00:00 |
05:20:43.53 |
+09:15:22.2 |
HIP 24802 |
25.58 |
| 2026-06-14 12:00 |
05:20:44.97 |
+09:15:23.4 |
HIP 24802 |
25.93 |
| 2026-06-15 00:00 |
05:20:46.41 |
+09:15:24.6 |
HIP 24802 |
26.28 |
| 2026-06-15 12:00 |
05:20:47.85 |
+09:15:25.7 |
HIP 24802 |
26.63 |
| 2026-06-16 00:00 |
05:20:49.28 |
+09:15:26.7 |
HIP 24802 |
26.98 |
| 2026-06-16 12:00 |
05:20:50.72 |
+09:15:27.8 |
HIP 25123 |
26.95 |
| 2026-06-17 00:00 |
05:20:52.15 |
+09:15:28.7 |
HIP 25123 |
26.60 |
| 2026-06-17 12:00 |
05:20:53.59 |
+09:15:29.7 |
HIP 25123 |
26.25 |
| 2026-06-18 00:00 |
05:20:55.02 |
+09:15:30.6 |
HIP 25123 |
25.89 |
| 2026-06-18 12:00 |
05:20:56.45 |
+09:15:31.4 |
HIP 25123 |
25.54 |
| 2026-06-19 00:00 |
05:20:57.88 |
+09:15:32.2 |
HIP 25123 |
25.19 |
| 2026-06-19 12:00 |
05:20:59.31 |
+09:15:32.9 |
HIP 25123 |
24.84 |
| 2026-06-20 00:00 |
05:21:00.74 |
+09:15:33.6 |
HIP 25123 |
24.49 |
| 2026-06-20 12:00 |
05:21:02.16 |
+09:15:34.3 |
HIP 25123 |
24.14 |
| 2026-06-21 00:00 |
05:21:03.58 |
+09:15:34.9 |
HIP 25123 |
23.79 |
| 2026-06-21 12:00 |
05:21:05.01 |
+09:15:35.5 |
HIP 25123 |
23.44 |
| 2026-06-22 00:00 |
05:21:06.43 |
+09:15:36.0 |
HIP 25123 |
23.09 |