メタデータ
| 項目 |
値 |
| Designation |
C/1997 J1 (Mueller) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1997-05-03T19:16:39.167040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:50Z |
| Obs used |
497 |
| NEO |
- |
| M1 |
8.300 |
| K1 |
9.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1997-08-08.0000000 |
| e |
0.99099113 |
| q (au) |
2.302131 |
| a (au) |
255.540410 |
| i (deg) |
122.968328 |
| Ω (om, deg) |
277.076050 |
| ω (w, deg) |
98.954561 |
| M (ma, deg) |
0.023210 |
等級
散乱 + 全体線形
$$
M_a = (7.672 + 4.834\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.672 |
| n |
4.834 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
0.800 |
| 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) |
| 2026-05-12 00:00 |
03:24:24.72 |
-37:20:49.7 |
HIP 15839 |
5.91 |
| 2026-05-12 12:00 |
03:24:27.47 |
-37:20:44.5 |
HIP 15839 |
6.29 |
| 2026-05-13 00:00 |
03:24:30.23 |
-37:20:39.5 |
HIP 15839 |
6.69 |
| 2026-05-13 12:00 |
03:24:32.98 |
-37:20:34.8 |
HIP 15839 |
7.12 |
| 2026-05-14 00:00 |
03:24:35.74 |
-37:20:30.3 |
HIP 15839 |
7.56 |
| 2026-05-14 12:00 |
03:24:38.49 |
-37:20:26.0 |
HIP 15839 |
8.02 |
| 2026-05-15 00:00 |
03:24:41.25 |
-37:20:22.0 |
HIP 15839 |
8.49 |
| 2026-05-15 12:00 |
03:24:44.00 |
-37:20:18.2 |
HIP 15839 |
8.97 |
| 2026-05-16 00:00 |
03:24:46.76 |
-37:20:14.7 |
HIP 15839 |
9.46 |
| 2026-05-16 12:00 |
03:24:49.51 |
-37:20:11.4 |
HIP 15839 |
9.96 |
| 2026-05-17 00:00 |
03:24:52.27 |
-37:20:08.3 |
HIP 15839 |
10.47 |
| 2026-05-17 12:00 |
03:24:55.02 |
-37:20:05.6 |
HIP 15839 |
10.98 |
| 2026-05-18 00:00 |
03:24:57.77 |
-37:20:03.0 |
HIP 15933 |
11.29 |
| 2026-05-18 12:00 |
03:25:00.52 |
-37:20:00.7 |
HIP 15933 |
11.12 |
| 2026-05-19 00:00 |
03:25:03.27 |
-37:19:58.7 |
HIP 15933 |
10.98 |
| 2026-05-19 12:00 |
03:25:06.02 |
-37:19:56.8 |
HIP 15933 |
10.87 |
| 2026-05-20 00:00 |
03:25:08.77 |
-37:19:55.3 |
HIP 15933 |
10.79 |
| 2026-05-20 12:00 |
03:25:11.51 |
-37:19:54.0 |
HIP 15933 |
10.74 |
| 2026-05-21 00:00 |
03:25:14.25 |
-37:19:52.9 |
HIP 15933 |
10.72 |
| 2026-05-21 12:00 |
03:25:16.99 |
-37:19:52.1 |
HIP 15933 |
10.74 |
| 2026-05-22 00:00 |
03:25:19.72 |
-37:19:51.5 |
HIP 15933 |
10.79 |
| 2026-05-22 12:00 |
03:25:22.46 |
-37:19:51.2 |
HIP 15933 |
10.86 |
| 2026-05-23 00:00 |
03:25:25.18 |
-37:19:51.1 |
HIP 15933 |
10.97 |
| 2026-05-23 12:00 |
03:25:27.91 |
-37:19:51.3 |
HIP 15933 |
11.11 |
| 2026-05-24 00:00 |
03:25:30.63 |
-37:19:51.7 |
HIP 15933 |
11.27 |
| 2026-05-24 12:00 |
03:25:33.35 |
-37:19:52.3 |
HIP 15933 |
11.47 |
| 2026-05-25 00:00 |
03:25:36.07 |
-37:19:53.2 |
HIP 15933 |
11.68 |
| 2026-05-25 12:00 |
03:25:38.78 |
-37:19:54.4 |
HIP 15933 |
11.93 |
| 2026-05-26 00:00 |
03:25:41.48 |
-37:19:55.8 |
HIP 15933 |
12.19 |
| 2026-05-26 12:00 |
03:25:44.19 |
-37:19:57.4 |
HIP 15933 |
12.47 |
| 2026-05-27 00:00 |
03:25:46.88 |
-37:19:59.3 |
HIP 15933 |
12.78 |
| 2026-05-27 12:00 |
03:25:49.58 |
-37:20:01.4 |
HIP 15933 |
13.10 |
| 2026-05-28 00:00 |
03:25:52.26 |
-37:20:03.8 |
HIP 15933 |
13.44 |
| 2026-05-28 12:00 |
03:25:54.95 |
-37:20:06.4 |
HIP 15933 |
13.79 |
| 2026-05-29 00:00 |
03:25:57.62 |
-37:20:09.2 |
HIP 15933 |
14.16 |
| 2026-05-29 12:00 |
03:26:00.30 |
-37:20:12.3 |
HIP 15933 |
14.54 |
| 2026-05-30 00:00 |
03:26:02.96 |
-37:20:15.7 |
HIP 15933 |
14.93 |
| 2026-05-30 12:00 |
03:26:05.62 |
-37:20:19.3 |
HIP 15933 |
15.33 |
| 2026-05-31 00:00 |
03:26:08.28 |
-37:20:23.1 |
HIP 15933 |
15.75 |
| 2026-05-31 12:00 |
03:26:10.93 |
-37:20:27.2 |
HIP 15933 |
16.17 |
| 2026-06-01 00:00 |
03:26:13.57 |
-37:20:31.5 |
HIP 15933 |
16.60 |
| 2026-06-01 12:00 |
03:26:16.21 |
-37:20:36.1 |
HIP 15933 |
17.03 |
| 2026-06-02 00:00 |
03:26:18.84 |
-37:20:40.9 |
HIP 15933 |
17.48 |