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 |
-0.736 |
| 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) |
| 2026-03-26 00:00 |
07:32:19.24 |
+04:28:32.8 |
HIP 36518 |
24.44 |
| 2026-03-26 12:00 |
07:32:18.82 |
+04:28:39.0 |
HIP 36518 |
24.37 |
| 2026-03-27 00:00 |
07:32:18.41 |
+04:28:45.2 |
HIP 36518 |
24.31 |
| 2026-03-27 12:00 |
07:32:18.01 |
+04:28:51.3 |
HIP 36518 |
24.24 |
| 2026-03-28 00:00 |
07:32:17.62 |
+04:28:57.5 |
HIP 36518 |
24.18 |
| 2026-03-28 12:00 |
07:32:17.24 |
+04:29:03.6 |
HIP 36518 |
24.12 |
| 2026-03-29 00:00 |
07:32:16.87 |
+04:29:09.7 |
HIP 36518 |
24.07 |
| 2026-03-29 12:00 |
07:32:16.52 |
+04:29:15.8 |
HIP 36518 |
24.02 |
| 2026-03-30 00:00 |
07:32:16.17 |
+04:29:21.9 |
HIP 36518 |
23.97 |
| 2026-03-30 12:00 |
07:32:15.84 |
+04:29:27.9 |
HIP 36518 |
23.92 |
| 2026-03-31 00:00 |
07:32:15.52 |
+04:29:34.0 |
HIP 36518 |
23.88 |
| 2026-03-31 12:00 |
07:32:15.21 |
+04:29:40.0 |
HIP 36518 |
23.84 |
| 2026-04-01 00:00 |
07:32:14.91 |
+04:29:46.0 |
HIP 36518 |
23.81 |
| 2026-04-01 12:00 |
07:32:14.62 |
+04:29:52.0 |
HIP 36518 |
23.78 |
| 2026-04-02 00:00 |
07:32:14.35 |
+04:29:58.0 |
HIP 36518 |
23.75 |
| 2026-04-02 12:00 |
07:32:14.08 |
+04:30:03.9 |
HIP 36518 |
23.72 |
| 2026-04-03 00:00 |
07:32:13.83 |
+04:30:09.9 |
HIP 36518 |
23.70 |
| 2026-04-03 12:00 |
07:32:13.59 |
+04:30:15.8 |
HIP 36518 |
23.68 |
| 2026-04-04 00:00 |
07:32:13.36 |
+04:30:21.7 |
HIP 36518 |
23.66 |
| 2026-04-04 12:00 |
07:32:13.14 |
+04:30:27.6 |
HIP 36518 |
23.65 |
| 2026-04-05 00:00 |
07:32:12.93 |
+04:30:33.5 |
HIP 36518 |
23.64 |
| 2026-04-05 12:00 |
07:32:12.73 |
+04:30:39.3 |
HIP 36518 |
23.63 |
| 2026-04-06 00:00 |
07:32:12.55 |
+04:30:45.1 |
HIP 36518 |
23.63 |
| 2026-04-06 12:00 |
07:32:12.37 |
+04:30:50.9 |
HIP 36518 |
23.62 |
| 2026-04-07 00:00 |
07:32:12.21 |
+04:30:56.7 |
HIP 36518 |
23.62 |
| 2026-04-07 12:00 |
07:32:12.06 |
+04:31:02.4 |
HIP 36518 |
23.63 |
| 2026-04-08 00:00 |
07:32:11.92 |
+04:31:08.2 |
HIP 36518 |
23.64 |
| 2026-04-08 12:00 |
07:32:11.79 |
+04:31:13.9 |
HIP 36518 |
23.65 |
| 2026-04-09 00:00 |
07:32:11.67 |
+04:31:19.6 |
HIP 36518 |
23.66 |
| 2026-04-09 12:00 |
07:32:11.57 |
+04:31:25.2 |
HIP 36518 |
23.67 |
| 2026-04-10 00:00 |
07:32:11.47 |
+04:31:30.8 |
HIP 36518 |
23.69 |
| 2026-04-10 12:00 |
07:32:11.39 |
+04:31:36.5 |
HIP 36518 |
23.71 |
| 2026-04-11 00:00 |
07:32:11.32 |
+04:31:42.0 |
HIP 36503 |
23.72 |
| 2026-04-11 12:00 |
07:32:11.26 |
+04:31:47.6 |
HIP 36503 |
23.70 |
| 2026-04-12 00:00 |
07:32:11.21 |
+04:31:53.1 |
HIP 36503 |
23.68 |
| 2026-04-12 12:00 |
07:32:11.18 |
+04:31:58.6 |
HIP 36503 |
23.67 |
| 2026-04-13 00:00 |
07:32:11.15 |
+04:32:04.1 |
HIP 36503 |
23.66 |
| 2026-04-13 12:00 |
07:32:11.14 |
+04:32:09.6 |
HIP 36503 |
23.65 |
| 2026-04-14 00:00 |
07:32:11.13 |
+04:32:15.0 |
HIP 36503 |
23.65 |
| 2026-04-14 12:00 |
07:32:11.14 |
+04:32:20.4 |
HIP 36503 |
23.64 |
| 2026-04-15 00:00 |
07:32:11.16 |
+04:32:25.7 |
HIP 36503 |
23.65 |
| 2026-04-15 12:00 |
07:32:11.19 |
+04:32:31.1 |
HIP 36503 |
23.65 |
| 2026-04-16 00:00 |
07:32:11.24 |
+04:32:36.4 |
HIP 36503 |
23.66 |