メタデータ
| 項目 |
値 |
| Designation |
C/1894 G1 (Gale) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1894-04-13T21:03:24.776640Z |
| Orbit solution date (soln_date, UTC) |
2023-12-04T20:32:28Z |
| Obs used |
45 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1894-06-04.0000000 |
| e |
0.98894455 |
| q (au) |
0.982984 |
| a (au) |
88.914014 |
| i (deg) |
86.958520 |
| Ω (om, deg) |
207.890404 |
| ω (w, deg) |
324.173891 |
| M (ma, deg) |
0.060098 |
等級
散乱 + 全体線形
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
00:11:52.33 |
+47:23:03.3 |
HIP 980 |
6.87 |
| 2026-06-01 12:00 |
00:11:52.87 |
+47:23:14.5 |
HIP 980 |
6.66 |
| 2026-06-02 00:00 |
00:11:53.39 |
+47:23:25.7 |
HIP 980 |
6.46 |
| 2026-06-02 12:00 |
00:11:53.91 |
+47:23:36.9 |
HIP 980 |
6.25 |
| 2026-06-03 00:00 |
00:11:54.41 |
+47:23:48.1 |
HIP 980 |
6.05 |
| 2026-06-03 12:00 |
00:11:54.91 |
+47:23:59.3 |
HIP 980 |
5.84 |
| 2026-06-04 00:00 |
00:11:55.39 |
+47:24:10.4 |
HIP 980 |
5.64 |
| 2026-06-04 12:00 |
00:11:55.86 |
+47:24:21.6 |
HIP 980 |
5.44 |
| 2026-06-05 00:00 |
00:11:56.33 |
+47:24:32.8 |
HIP 980 |
5.23 |
| 2026-06-05 12:00 |
00:11:56.78 |
+47:24:44.0 |
HIP 980 |
5.03 |
| 2026-06-06 00:00 |
00:11:57.22 |
+47:24:55.2 |
HIP 980 |
4.83 |
| 2026-06-06 12:00 |
00:11:57.65 |
+47:25:06.4 |
HIP 980 |
4.63 |
| 2026-06-07 00:00 |
00:11:58.07 |
+47:25:17.6 |
HIP 980 |
4.43 |
| 2026-06-07 12:00 |
00:11:58.48 |
+47:25:28.7 |
HIP 980 |
4.23 |
| 2026-06-08 00:00 |
00:11:58.88 |
+47:25:39.9 |
HIP 980 |
4.04 |
| 2026-06-08 12:00 |
00:11:59.27 |
+47:25:51.1 |
HIP 980 |
3.84 |
| 2026-06-09 00:00 |
00:11:59.65 |
+47:26:02.2 |
HIP 980 |
3.64 |
| 2026-06-09 12:00 |
00:12:00.01 |
+47:26:13.4 |
HIP 980 |
3.45 |
| 2026-06-10 00:00 |
00:12:00.37 |
+47:26:24.5 |
HIP 980 |
3.25 |
| 2026-06-10 12:00 |
00:12:00.72 |
+47:26:35.6 |
HIP 980 |
3.06 |
| 2026-06-11 00:00 |
00:12:01.05 |
+47:26:46.7 |
HIP 980 |
2.86 |
| 2026-06-11 12:00 |
00:12:01.37 |
+47:26:57.9 |
HIP 980 |
2.67 |
| 2026-06-12 00:00 |
00:12:01.69 |
+47:27:08.9 |
HIP 980 |
2.48 |
| 2026-06-12 12:00 |
00:12:01.99 |
+47:27:20.0 |
HIP 980 |
2.29 |
| 2026-06-13 00:00 |
00:12:02.28 |
+47:27:31.1 |
HIP 980 |
2.10 |
| 2026-06-13 12:00 |
00:12:02.56 |
+47:27:42.2 |
HIP 980 |
1.91 |
| 2026-06-14 00:00 |
00:12:02.83 |
+47:27:53.2 |
HIP 980 |
1.72 |
| 2026-06-14 12:00 |
00:12:03.09 |
+47:28:04.2 |
HIP 980 |
1.54 |
| 2026-06-15 00:00 |
00:12:03.33 |
+47:28:15.2 |
HIP 980 |
1.35 |
| 2026-06-15 12:00 |
00:12:03.57 |
+47:28:26.2 |
HIP 980 |
1.17 |
| 2026-06-16 00:00 |
00:12:03.79 |
+47:28:37.2 |
HIP 980 |
0.99 |
| 2026-06-16 12:00 |
00:12:04.00 |
+47:28:48.1 |
HIP 980 |
0.82 |
| 2026-06-17 00:00 |
00:12:04.21 |
+47:28:59.1 |
HIP 980 |
0.66 |
| 2026-06-17 12:00 |
00:12:04.40 |
+47:29:10.0 |
HIP 980 |
0.51 |
| 2026-06-18 00:00 |
00:12:04.58 |
+47:29:20.9 |
HIP 980 |
0.40 |
| 2026-06-18 12:00 |
00:12:04.75 |
+47:29:31.7 |
HIP 980 |
0.36 |
| 2026-06-19 00:00 |
00:12:04.90 |
+47:29:42.6 |
HIP 980 |
0.41 |
| 2026-06-19 12:00 |
00:12:05.05 |
+47:29:53.4 |
HIP 980 |
0.52 |
| 2026-06-20 00:00 |
00:12:05.18 |
+47:30:04.2 |
HIP 980 |
0.66 |
| 2026-06-20 12:00 |
00:12:05.31 |
+47:30:14.9 |
HIP 980 |
0.82 |
| 2026-06-21 00:00 |
00:12:05.42 |
+47:30:25.7 |
HIP 980 |
0.99 |
| 2026-06-21 12:00 |
00:12:05.52 |
+47:30:36.4 |
HIP 980 |
1.16 |
| 2026-06-22 00:00 |
00:12:05.61 |
+47:30:47.1 |
HIP 980 |
1.33 |