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) |
| 2026-03-26 00:00 |
00:09:30.79 |
+47:03:38.0 |
HIP 826 |
15.99 |
| 2026-03-26 12:00 |
00:09:32.14 |
+47:03:42.3 |
HIP 826 |
15.84 |
| 2026-03-27 00:00 |
00:09:33.49 |
+47:03:46.7 |
HIP 826 |
15.68 |
| 2026-03-27 12:00 |
00:09:34.84 |
+47:03:51.2 |
HIP 826 |
15.53 |
| 2026-03-28 00:00 |
00:09:36.18 |
+47:03:55.7 |
HIP 826 |
15.38 |
| 2026-03-28 12:00 |
00:09:37.53 |
+47:04:00.4 |
HIP 826 |
15.23 |
| 2026-03-29 00:00 |
00:09:38.88 |
+47:04:05.1 |
HIP 826 |
15.09 |
| 2026-03-29 12:00 |
00:09:40.22 |
+47:04:10.0 |
HIP 826 |
14.94 |
| 2026-03-30 00:00 |
00:09:41.56 |
+47:04:14.9 |
HIP 826 |
14.79 |
| 2026-03-30 12:00 |
00:09:42.91 |
+47:04:19.9 |
HIP 826 |
14.65 |
| 2026-03-31 00:00 |
00:09:44.25 |
+47:04:25.0 |
HIP 826 |
14.51 |
| 2026-03-31 12:00 |
00:09:45.59 |
+47:04:30.2 |
HIP 826 |
14.36 |
| 2026-04-01 00:00 |
00:09:46.92 |
+47:04:35.4 |
HIP 826 |
14.22 |
| 2026-04-01 12:00 |
00:09:48.26 |
+47:04:40.8 |
HIP 826 |
14.08 |
| 2026-04-02 00:00 |
00:09:49.59 |
+47:04:46.2 |
HIP 826 |
13.95 |
| 2026-04-02 12:00 |
00:09:50.93 |
+47:04:51.7 |
HIP 826 |
13.81 |
| 2026-04-03 00:00 |
00:09:52.26 |
+47:04:57.3 |
HIP 826 |
13.68 |
| 2026-04-03 12:00 |
00:09:53.59 |
+47:05:03.0 |
HIP 826 |
13.55 |
| 2026-04-04 00:00 |
00:09:54.91 |
+47:05:08.8 |
HIP 826 |
13.41 |
| 2026-04-04 12:00 |
00:09:56.24 |
+47:05:14.6 |
HIP 826 |
13.29 |
| 2026-04-05 00:00 |
00:09:57.56 |
+47:05:20.6 |
HIP 826 |
13.16 |
| 2026-04-05 12:00 |
00:09:58.88 |
+47:05:26.6 |
HIP 826 |
13.04 |
| 2026-04-06 00:00 |
00:10:00.20 |
+47:05:32.7 |
HIP 826 |
12.91 |
| 2026-04-06 12:00 |
00:10:01.51 |
+47:05:38.8 |
HIP 826 |
12.79 |
| 2026-04-07 00:00 |
00:10:02.82 |
+47:05:45.1 |
HIP 826 |
12.68 |
| 2026-04-07 12:00 |
00:10:04.13 |
+47:05:51.4 |
HIP 826 |
12.56 |
| 2026-04-08 00:00 |
00:10:05.44 |
+47:05:57.8 |
HIP 826 |
12.45 |
| 2026-04-08 12:00 |
00:10:06.74 |
+47:06:04.3 |
HIP 826 |
12.34 |
| 2026-04-09 00:00 |
00:10:08.05 |
+47:06:10.9 |
HIP 826 |
12.23 |
| 2026-04-09 12:00 |
00:10:09.34 |
+47:06:17.5 |
HIP 826 |
12.13 |
| 2026-04-10 00:00 |
00:10:10.64 |
+47:06:24.2 |
HIP 826 |
12.02 |
| 2026-04-10 12:00 |
00:10:11.93 |
+47:06:31.0 |
HIP 826 |
11.93 |
| 2026-04-11 00:00 |
00:10:13.22 |
+47:06:37.9 |
HIP 826 |
11.83 |
| 2026-04-11 12:00 |
00:10:14.50 |
+47:06:44.9 |
HIP 826 |
11.74 |
| 2026-04-12 00:00 |
00:10:15.78 |
+47:06:51.9 |
HIP 826 |
11.65 |
| 2026-04-12 12:00 |
00:10:17.06 |
+47:06:59.0 |
HIP 826 |
11.56 |
| 2026-04-13 00:00 |
00:10:18.34 |
+47:07:06.2 |
HIP 826 |
11.48 |
| 2026-04-13 12:00 |
00:10:19.61 |
+47:07:13.4 |
HIP 826 |
11.40 |
| 2026-04-14 00:00 |
00:10:20.87 |
+47:07:20.7 |
HIP 826 |
11.32 |
| 2026-04-14 12:00 |
00:10:22.14 |
+47:07:28.1 |
HIP 826 |
11.25 |
| 2026-04-15 00:00 |
00:10:23.39 |
+47:07:35.6 |
HIP 826 |
11.18 |
| 2026-04-15 12:00 |
00:10:24.65 |
+47:07:43.1 |
HIP 826 |
11.12 |
| 2026-04-16 00:00 |
00:10:25.90 |
+47:07:50.7 |
HIP 826 |
11.06 |