メタデータ
| 項目 |
値 |
| Designation |
C/1979 M3 (Torres) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1979-07-15T09:58:57.475200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:27Z |
| Obs used |
33 |
| NEO |
- |
| M1 |
8.100 |
| K1 |
10.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1979-07-15.0000000 |
| e |
1.00102434 |
| q (au) |
4.686875 |
| a (au) |
-4575.484905 |
| i (deg) |
92.178306 |
| Ω (om, deg) |
293.136764 |
| ω (w, deg) |
10.102772 |
| M (ma, deg) |
-0.000001 |
等級
散乱 + 全体線形
$$
M_a = (11.059 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.059 |
| n |
2.000 |
| 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 |
08:01:51.18 |
+40:45:48.4 |
HIP 39224 |
7.79 |
| 2026-07-29 12:00 |
08:01:53.29 |
+40:45:43.8 |
HIP 39224 |
8.12 |
| 2026-07-30 00:00 |
08:01:55.40 |
+40:45:39.3 |
HIP 39224 |
8.46 |
| 2026-07-30 12:00 |
08:01:57.50 |
+40:45:34.9 |
HIP 39224 |
8.81 |
| 2026-07-31 00:00 |
08:01:59.60 |
+40:45:30.5 |
HIP 39224 |
9.16 |
| 2026-07-31 12:00 |
08:02:01.70 |
+40:45:26.2 |
HIP 39224 |
9.51 |
| 2026-08-01 00:00 |
08:02:03.79 |
+40:45:22.1 |
HIP 39224 |
9.86 |
| 2026-08-01 12:00 |
08:02:05.88 |
+40:45:17.9 |
HIP 39224 |
10.22 |
| 2026-08-02 00:00 |
08:02:07.97 |
+40:45:13.9 |
HIP 39224 |
10.58 |
| 2026-08-02 12:00 |
08:02:10.06 |
+40:45:09.9 |
HIP 39224 |
10.94 |
| 2026-08-03 00:00 |
08:02:12.14 |
+40:45:06.0 |
HIP 39224 |
11.30 |
| 2026-08-03 12:00 |
08:02:14.22 |
+40:45:02.2 |
HIP 39224 |
11.66 |
| 2026-08-04 00:00 |
08:02:16.29 |
+40:44:58.5 |
HIP 39224 |
12.03 |
| 2026-08-04 12:00 |
08:02:18.36 |
+40:44:54.8 |
HIP 39224 |
12.39 |
| 2026-08-05 00:00 |
08:02:20.42 |
+40:44:51.2 |
HIP 39224 |
12.76 |
| 2026-08-05 12:00 |
08:02:22.49 |
+40:44:47.7 |
HIP 39224 |
13.12 |
| 2026-08-06 00:00 |
08:02:24.54 |
+40:44:44.3 |
HIP 39224 |
13.49 |
| 2026-08-06 12:00 |
08:02:26.60 |
+40:44:41.0 |
HIP 39224 |
13.85 |
| 2026-08-07 00:00 |
08:02:28.64 |
+40:44:37.7 |
HIP 39224 |
14.22 |
| 2026-08-07 12:00 |
08:02:30.69 |
+40:44:34.5 |
HIP 39224 |
14.58 |
| 2026-08-08 00:00 |
08:02:32.73 |
+40:44:31.4 |
HIP 39224 |
14.95 |
| 2026-08-08 12:00 |
08:02:34.76 |
+40:44:28.4 |
HIP 39224 |
15.32 |
| 2026-08-09 00:00 |
08:02:36.79 |
+40:44:25.5 |
HIP 39224 |
15.68 |
| 2026-08-09 12:00 |
08:02:38.81 |
+40:44:22.6 |
HIP 39224 |
16.05 |
| 2026-08-10 00:00 |
08:02:40.83 |
+40:44:19.8 |
HIP 39224 |
16.41 |
| 2026-08-10 12:00 |
08:02:42.84 |
+40:44:17.1 |
HIP 39224 |
16.77 |
| 2026-08-11 00:00 |
08:02:44.84 |
+40:44:14.5 |
HIP 39224 |
17.13 |
| 2026-08-11 12:00 |
08:02:46.84 |
+40:44:11.9 |
HIP 39224 |
17.50 |
| 2026-08-12 00:00 |
08:02:48.83 |
+40:44:09.5 |
HIP 39224 |
17.86 |
| 2026-08-12 12:00 |
08:02:50.82 |
+40:44:07.1 |
HIP 39224 |
18.22 |
| 2026-08-13 00:00 |
08:02:52.80 |
+40:44:04.8 |
HIP 39224 |
18.58 |
| 2026-08-13 12:00 |
08:02:54.77 |
+40:44:02.6 |
HIP 39224 |
18.94 |
| 2026-08-14 00:00 |
08:02:56.74 |
+40:44:00.4 |
HIP 39224 |
19.29 |
| 2026-08-14 12:00 |
08:02:58.70 |
+40:43:58.4 |
HIP 39224 |
19.65 |
| 2026-08-15 00:00 |
08:03:00.65 |
+40:43:56.4 |
HIP 39224 |
20.00 |
| 2026-08-15 12:00 |
08:03:02.60 |
+40:43:54.5 |
HIP 39224 |
20.36 |
| 2026-08-16 00:00 |
08:03:04.54 |
+40:43:52.7 |
HIP 39224 |
20.71 |
| 2026-08-16 12:00 |
08:03:06.47 |
+40:43:51.0 |
HIP 39224 |
21.06 |
| 2026-08-17 00:00 |
08:03:08.39 |
+40:43:49.4 |
HIP 39224 |
21.41 |
| 2026-08-17 12:00 |
08:03:10.31 |
+40:43:47.8 |
HIP 39224 |
21.76 |
| 2026-08-18 00:00 |
08:03:12.22 |
+40:43:46.3 |
HIP 39224 |
22.11 |
| 2026-08-18 12:00 |
08:03:14.11 |
+40:43:44.9 |
HIP 39224 |
22.45 |
| 2026-08-19 00:00 |
08:03:16.01 |
+40:43:43.6 |
HIP 39224 |
22.80 |