メタデータ
| 項目 |
値 |
| Designation |
C/1983 J1 (Sugano-Saigusa-Fujikawa) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1983-05-01T07:52:43.495680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:29Z |
| Obs used |
55 |
| NEO |
- |
| M1 |
12.200 |
| K1 |
15.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1983-05-15.0000000 |
| e |
0.99990155 |
| q (au) |
0.471084 |
| a (au) |
4784.905650 |
| i (deg) |
96.622884 |
| Ω (om, deg) |
83.039467 |
| ω (w, deg) |
82.173450 |
| M (ma, deg) |
0.000041 |
等級
散乱 + 全体線形
$$
M_a = (11.814 + 5.498\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.814 |
| n |
5.498 |
| gf |
0.800 |
| gb |
-0.678 |
| k |
0.974 |
| 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) |
| 2026-07-29 00:00 |
09:20:23.05 |
-78:18:17.6 |
HIP 45619 |
10.57 |
| 2026-07-29 12:00 |
09:20:30.81 |
-78:18:11.8 |
HIP 45619 |
10.92 |
| 2026-07-30 00:00 |
09:20:38.59 |
-78:18:06.3 |
HIP 45619 |
11.27 |
| 2026-07-30 12:00 |
09:20:46.37 |
-78:18:00.9 |
HIP 45619 |
11.62 |
| 2026-07-31 00:00 |
09:20:54.16 |
-78:17:55.7 |
HIP 45619 |
11.98 |
| 2026-07-31 12:00 |
09:21:01.96 |
-78:17:50.8 |
HIP 45619 |
12.33 |
| 2026-08-01 00:00 |
09:21:09.77 |
-78:17:46.0 |
HIP 45619 |
12.69 |
| 2026-08-01 12:00 |
09:21:17.59 |
-78:17:41.4 |
HIP 45619 |
13.04 |
| 2026-08-02 00:00 |
09:21:25.42 |
-78:17:37.1 |
HIP 45619 |
13.40 |
| 2026-08-02 12:00 |
09:21:33.26 |
-78:17:32.9 |
HIP 45619 |
13.76 |
| 2026-08-03 00:00 |
09:21:41.10 |
-78:17:28.9 |
HIP 45619 |
14.12 |
| 2026-08-03 12:00 |
09:21:48.95 |
-78:17:25.1 |
HIP 45619 |
14.48 |
| 2026-08-04 00:00 |
09:21:56.81 |
-78:17:21.6 |
HIP 45619 |
14.84 |
| 2026-08-04 12:00 |
09:22:04.67 |
-78:17:18.2 |
HIP 45619 |
15.20 |
| 2026-08-05 00:00 |
09:22:12.54 |
-78:17:15.0 |
HIP 45619 |
15.56 |
| 2026-08-05 12:00 |
09:22:20.41 |
-78:17:12.1 |
HIP 45619 |
15.92 |
| 2026-08-06 00:00 |
09:22:28.29 |
-78:17:09.3 |
HIP 45619 |
16.29 |
| 2026-08-06 12:00 |
09:22:36.17 |
-78:17:06.7 |
HIP 45619 |
16.65 |
| 2026-08-07 00:00 |
09:22:44.06 |
-78:17:04.4 |
HIP 45619 |
17.01 |
| 2026-08-07 12:00 |
09:22:51.95 |
-78:17:02.2 |
HIP 45619 |
17.37 |
| 2026-08-08 00:00 |
09:22:59.84 |
-78:17:00.3 |
HIP 45619 |
17.74 |
| 2026-08-08 12:00 |
09:23:07.74 |
-78:16:58.5 |
HIP 45619 |
18.10 |
| 2026-08-09 00:00 |
09:23:15.64 |
-78:16:57.0 |
HIP 45619 |
18.46 |
| 2026-08-09 12:00 |
09:23:23.54 |
-78:16:55.6 |
HIP 45619 |
18.82 |
| 2026-08-10 00:00 |
09:23:31.44 |
-78:16:54.5 |
HIP 45619 |
19.19 |
| 2026-08-10 12:00 |
09:23:39.34 |
-78:16:53.6 |
HIP 45619 |
19.55 |
| 2026-08-11 00:00 |
09:23:47.24 |
-78:16:52.8 |
HIP 45619 |
19.91 |
| 2026-08-11 12:00 |
09:23:55.14 |
-78:16:52.3 |
HIP 45619 |
20.27 |
| 2026-08-12 00:00 |
09:24:03.04 |
-78:16:52.0 |
HIP 45619 |
20.64 |
| 2026-08-12 12:00 |
09:24:10.94 |
-78:16:51.9 |
HIP 45619 |
21.00 |
| 2026-08-13 00:00 |
09:24:18.83 |
-78:16:52.0 |
HIP 45619 |
21.36 |
| 2026-08-13 12:00 |
09:24:26.73 |
-78:16:52.2 |
HIP 45619 |
21.72 |
| 2026-08-14 00:00 |
09:24:34.62 |
-78:16:52.7 |
HIP 45619 |
22.08 |
| 2026-08-14 12:00 |
09:24:42.51 |
-78:16:53.4 |
HIP 45619 |
22.44 |
| 2026-08-15 00:00 |
09:24:50.39 |
-78:16:54.4 |
HIP 45619 |
22.80 |
| 2026-08-15 12:00 |
09:24:58.27 |
-78:16:55.5 |
HIP 45619 |
23.16 |
| 2026-08-16 00:00 |
09:25:06.15 |
-78:16:56.8 |
HIP 45619 |
23.52 |
| 2026-08-16 12:00 |
09:25:14.02 |
-78:16:58.3 |
HIP 45619 |
23.88 |
| 2026-08-17 00:00 |
09:25:21.88 |
-78:17:00.0 |
HIP 45619 |
24.24 |
| 2026-08-17 12:00 |
09:25:29.74 |
-78:17:02.0 |
HIP 46046 |
24.41 |
| 2026-08-18 00:00 |
09:25:37.59 |
-78:17:04.1 |
HIP 46046 |
24.55 |
| 2026-08-18 12:00 |
09:25:45.43 |
-78:17:06.4 |
HIP 46785 |
24.35 |
| 2026-08-19 00:00 |
09:25:53.27 |
-78:17:09.0 |
HIP 46785 |
24.02 |