メタデータ
| 項目 |
値 |
| Designation |
C/1901 G1 (Great comet) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1901-04-24T18:01:03.720000Z |
| Orbit solution date (soln_date, UTC) |
2025-09-09T12:42:30Z |
| Obs used |
54 |
| 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) |
1901-05-18.0000000 |
| e |
0.99993092 |
| q (au) |
0.244794 |
| a (au) |
3543.398137 |
| i (deg) |
131.077661 |
| Ω (om, deg) |
111.037984 |
| ω (w, deg) |
203.045920 |
| M (ma, deg) |
0.000109 |
等級
散乱 + 全体線形
$$
M_a = (5.313 + 3.428\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.313 |
| n |
3.428 |
| gf |
0.800 |
| gb |
-1.000 |
| k |
1.000 |
| 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) |
| 2026-09-20 00:00 |
06:45:02.57 |
+36:45:22.7 |
HIP 32263 |
17.51 |
| 2026-09-20 12:00 |
06:45:02.79 |
+36:45:25.4 |
HIP 32263 |
17.50 |
| 2026-09-21 00:00 |
06:45:03.00 |
+36:45:28.2 |
HIP 32263 |
17.49 |
| 2026-09-21 12:00 |
06:45:03.21 |
+36:45:31.0 |
HIP 32263 |
17.48 |
| 2026-09-22 00:00 |
06:45:03.40 |
+36:45:33.8 |
HIP 32263 |
17.46 |
| 2026-09-22 12:00 |
06:45:03.59 |
+36:45:36.7 |
HIP 32263 |
17.45 |
| 2026-09-23 00:00 |
06:45:03.77 |
+36:45:39.5 |
HIP 32263 |
17.43 |
| 2026-09-23 12:00 |
06:45:03.94 |
+36:45:42.3 |
HIP 32263 |
17.41 |
| 2026-09-24 00:00 |
06:45:04.10 |
+36:45:45.2 |
HIP 32263 |
17.39 |
| 2026-09-24 12:00 |
06:45:04.25 |
+36:45:48.1 |
HIP 32263 |
17.37 |
| 2026-09-25 00:00 |
06:45:04.40 |
+36:45:51.0 |
HIP 32263 |
17.35 |
| 2026-09-25 12:00 |
06:45:04.53 |
+36:45:53.9 |
HIP 32263 |
17.33 |
| 2026-09-26 00:00 |
06:45:04.66 |
+36:45:56.8 |
HIP 32263 |
17.31 |
| 2026-09-26 12:00 |
06:45:04.78 |
+36:45:59.7 |
HIP 32263 |
17.28 |
| 2026-09-27 00:00 |
06:45:04.88 |
+36:46:02.6 |
HIP 32263 |
17.26 |
| 2026-09-27 12:00 |
06:45:04.98 |
+36:46:05.6 |
HIP 32263 |
17.23 |
| 2026-09-28 00:00 |
06:45:05.07 |
+36:46:08.5 |
HIP 32263 |
17.20 |
| 2026-09-28 12:00 |
06:45:05.16 |
+36:46:11.5 |
HIP 32263 |
17.18 |
| 2026-09-29 00:00 |
06:45:05.23 |
+36:46:14.5 |
HIP 32263 |
17.15 |
| 2026-09-29 12:00 |
06:45:05.29 |
+36:46:17.5 |
HIP 32263 |
17.11 |
| 2026-09-30 00:00 |
06:45:05.35 |
+36:46:20.5 |
HIP 32263 |
17.08 |
| 2026-09-30 12:00 |
06:45:05.39 |
+36:46:23.5 |
HIP 32263 |
17.05 |
| 2026-10-01 00:00 |
06:45:05.43 |
+36:46:26.5 |
HIP 32263 |
17.01 |
| 2026-10-01 12:00 |
06:45:05.46 |
+36:46:29.6 |
HIP 32263 |
16.98 |
| 2026-10-02 00:00 |
06:45:05.48 |
+36:46:32.6 |
HIP 32263 |
16.94 |
| 2026-10-02 12:00 |
06:45:05.49 |
+36:46:35.6 |
HIP 32263 |
16.90 |
| 2026-10-03 00:00 |
06:45:05.49 |
+36:46:38.7 |
HIP 32263 |
16.86 |
| 2026-10-03 12:00 |
06:45:05.48 |
+36:46:41.8 |
HIP 32263 |
16.82 |
| 2026-10-04 00:00 |
06:45:05.46 |
+36:46:44.9 |
HIP 32263 |
16.78 |
| 2026-10-04 12:00 |
06:45:05.43 |
+36:46:47.9 |
HIP 32263 |
16.74 |
| 2026-10-05 00:00 |
06:45:05.40 |
+36:46:51.0 |
HIP 32263 |
16.69 |
| 2026-10-05 12:00 |
06:45:05.35 |
+36:46:54.1 |
HIP 32263 |
16.65 |
| 2026-10-06 00:00 |
06:45:05.30 |
+36:46:57.3 |
HIP 32263 |
16.60 |
| 2026-10-06 12:00 |
06:45:05.24 |
+36:47:00.4 |
HIP 32263 |
16.56 |
| 2026-10-07 00:00 |
06:45:05.17 |
+36:47:03.5 |
HIP 32263 |
16.51 |
| 2026-10-07 12:00 |
06:45:05.09 |
+36:47:06.6 |
HIP 32263 |
16.46 |
| 2026-10-08 00:00 |
06:45:05.00 |
+36:47:09.8 |
HIP 32263 |
16.40 |
| 2026-10-08 12:00 |
06:45:04.90 |
+36:47:12.9 |
HIP 32263 |
16.35 |
| 2026-10-09 00:00 |
06:45:04.79 |
+36:47:16.1 |
HIP 32263 |
16.30 |
| 2026-10-09 12:00 |
06:45:04.67 |
+36:47:19.2 |
HIP 32263 |
16.24 |
| 2026-10-10 00:00 |
06:45:04.54 |
+36:47:22.4 |
HIP 32263 |
16.19 |
| 2026-10-10 12:00 |
06:45:04.41 |
+36:47:25.6 |
HIP 32263 |
16.13 |
| 2026-10-11 00:00 |
06:45:04.26 |
+36:47:28.8 |
HIP 32263 |
16.07 |