メタデータ
| 項目 |
値 |
| Designation |
C/1960 M1 (Humason) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1959-12-11T08:25:18.805440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:14Z |
| Obs used |
24 |
| 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) |
1960-11-07.0000000 |
| e |
1.00033331 |
| q (au) |
4.267540 |
| a (au) |
-12803.528708 |
| i (deg) |
125.473935 |
| Ω (om, deg) |
307.270143 |
| ω (w, deg) |
46.494116 |
| M (ma, deg) |
0.000226 |
等級
散乱 + 全体線形
$$
M_a = (6.615 + 4.417\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.615 |
| n |
4.417 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
10.000 |
| 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) |
| 2026-07-29 00:00 |
07:35:15.81 |
+04:34:10.9 |
HIP 36884 |
8.81 |
| 2026-07-29 12:00 |
07:35:17.03 |
+04:34:06.2 |
HIP 36884 |
8.88 |
| 2026-07-30 00:00 |
07:35:18.25 |
+04:34:01.3 |
HIP 36884 |
8.96 |
| 2026-07-30 12:00 |
07:35:19.46 |
+04:33:56.5 |
HIP 36884 |
9.06 |
| 2026-07-31 00:00 |
07:35:20.68 |
+04:33:51.6 |
HIP 36884 |
9.16 |
| 2026-07-31 12:00 |
07:35:21.88 |
+04:33:46.7 |
HIP 36884 |
9.27 |
| 2026-08-01 00:00 |
07:35:23.09 |
+04:33:41.7 |
HIP 36884 |
9.39 |
| 2026-08-01 12:00 |
07:35:24.29 |
+04:33:36.7 |
HIP 36884 |
9.52 |
| 2026-08-02 00:00 |
07:35:25.49 |
+04:33:31.7 |
HIP 36884 |
9.65 |
| 2026-08-02 12:00 |
07:35:26.69 |
+04:33:26.6 |
HIP 36884 |
9.79 |
| 2026-08-03 00:00 |
07:35:27.88 |
+04:33:21.4 |
HIP 36884 |
9.94 |
| 2026-08-03 12:00 |
07:35:29.07 |
+04:33:16.3 |
HIP 36884 |
10.09 |
| 2026-08-04 00:00 |
07:35:30.26 |
+04:33:11.1 |
HIP 36884 |
10.25 |
| 2026-08-04 12:00 |
07:35:31.44 |
+04:33:05.8 |
HIP 36884 |
10.42 |
| 2026-08-05 00:00 |
07:35:32.62 |
+04:33:00.5 |
HIP 36884 |
10.59 |
| 2026-08-05 12:00 |
07:35:33.79 |
+04:32:55.2 |
HIP 36884 |
10.77 |
| 2026-08-06 00:00 |
07:35:34.97 |
+04:32:49.9 |
HIP 36884 |
10.95 |
| 2026-08-06 12:00 |
07:35:36.13 |
+04:32:44.5 |
HIP 36884 |
11.13 |
| 2026-08-07 00:00 |
07:35:37.30 |
+04:32:39.1 |
HIP 36884 |
11.32 |
| 2026-08-07 12:00 |
07:35:38.46 |
+04:32:33.6 |
HIP 36884 |
11.51 |
| 2026-08-08 00:00 |
07:35:39.61 |
+04:32:28.1 |
HIP 36884 |
11.71 |
| 2026-08-08 12:00 |
07:35:40.76 |
+04:32:22.6 |
HIP 36884 |
11.91 |
| 2026-08-09 00:00 |
07:35:41.91 |
+04:32:17.0 |
HIP 36884 |
12.11 |
| 2026-08-09 12:00 |
07:35:43.05 |
+04:32:11.4 |
HIP 36884 |
12.32 |
| 2026-08-10 00:00 |
07:35:44.19 |
+04:32:05.7 |
HIP 36884 |
12.52 |
| 2026-08-10 12:00 |
07:35:45.33 |
+04:32:00.1 |
HIP 36884 |
12.73 |
| 2026-08-11 00:00 |
07:35:46.45 |
+04:31:54.4 |
HIP 36884 |
12.94 |
| 2026-08-11 12:00 |
07:35:47.58 |
+04:31:48.6 |
HIP 36884 |
13.16 |
| 2026-08-12 00:00 |
07:35:48.70 |
+04:31:42.9 |
HIP 36884 |
13.37 |
| 2026-08-12 12:00 |
07:35:49.81 |
+04:31:37.0 |
HIP 36884 |
13.59 |
| 2026-08-13 00:00 |
07:35:50.92 |
+04:31:31.2 |
HIP 36884 |
13.81 |
| 2026-08-13 12:00 |
07:35:52.03 |
+04:31:25.3 |
HIP 36884 |
14.03 |
| 2026-08-14 00:00 |
07:35:53.13 |
+04:31:19.4 |
HIP 36884 |
14.25 |
| 2026-08-14 12:00 |
07:35:54.22 |
+04:31:13.5 |
HIP 36884 |
14.48 |
| 2026-08-15 00:00 |
07:35:55.31 |
+04:31:07.5 |
HIP 36884 |
14.70 |
| 2026-08-15 12:00 |
07:35:56.39 |
+04:31:01.5 |
HIP 36884 |
14.92 |
| 2026-08-16 00:00 |
07:35:57.47 |
+04:30:55.5 |
HIP 36884 |
15.15 |
| 2026-08-16 12:00 |
07:35:58.54 |
+04:30:49.5 |
HIP 36884 |
15.37 |
| 2026-08-17 00:00 |
07:35:59.61 |
+04:30:43.4 |
HIP 36884 |
15.60 |
| 2026-08-17 12:00 |
07:36:00.67 |
+04:30:37.3 |
HIP 36884 |
15.83 |
| 2026-08-18 00:00 |
07:36:01.72 |
+04:30:31.1 |
HIP 36884 |
16.05 |
| 2026-08-18 12:00 |
07:36:02.77 |
+04:30:25.0 |
HIP 36884 |
16.28 |
| 2026-08-19 00:00 |
07:36:03.82 |
+04:30:18.8 |
HIP 36884 |
16.51 |