メタデータ
| 項目 |
値 |
| Designation |
C/2026 J1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2026-06-30T08:37:36.886080Z |
| Orbit solution date (soln_date, UTC) |
2026-09-21T07:12:14Z |
| Obs used |
479 |
| NEO |
- |
| M1 |
7.300 |
| K1 |
25.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2026-05-14T13:38:37.622400Z |
| Discovery magnitude (MPC) |
20.48 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2026-06-21.0000000 |
| e |
0.90100420 |
| q (au) |
2.523692 |
| a (au) |
25.492916 |
| i (deg) |
73.115228 |
| Ω (om, deg) |
100.356587 |
| ω (w, deg) |
129.520537 |
| M (ma, deg) |
359.928332 |
等級
散乱 + 全体線形
$$
M_a = (13.664 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.664 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-1.000 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
16:45:55.20 |
-00:13:02.8 |
HIP 82181 |
21.84 |
| 2026-09-20 12:00 |
16:46:19.93 |
-00:25:37.4 |
HIP 82181 |
20.72 |
| 2026-09-21 00:00 |
16:46:44.85 |
-00:38:07.6 |
HIP 82062 |
16.54 |
| 2026-09-21 12:00 |
16:47:09.95 |
-00:50:33.5 |
HIP 82169 |
20.83 |
| 2026-09-22 00:00 |
16:47:35.24 |
-01:02:55.1 |
HIP 82169 |
9.47 |
| 2026-09-22 12:00 |
16:48:00.71 |
-01:15:12.4 |
HIP 82169 |
11.47 |
| 2026-09-23 00:00 |
16:48:26.36 |
-01:27:25.3 |
HIP 82169 |
23.57 |
| 2026-09-23 12:00 |
16:48:52.18 |
-01:39:34.0 |
HIP 82274 |
12.94 |
| 2026-09-24 00:00 |
16:49:18.19 |
-01:51:38.5 |
HIP 82274 |
9.47 |
| 2026-09-24 12:00 |
16:49:44.36 |
-02:03:38.6 |
HIP 82382 |
4.94 |
| 2026-09-25 00:00 |
16:50:10.71 |
-02:15:34.6 |
HIP 82382 |
13.61 |
| 2026-09-25 12:00 |
16:50:37.24 |
-02:27:26.4 |
HIP 82405 |
12.39 |
| 2026-09-26 00:00 |
16:51:03.93 |
-02:39:14.0 |
HIP 82405 |
10.41 |
| 2026-09-26 12:00 |
16:51:30.79 |
-02:50:57.4 |
HIP 82527 |
9.72 |
| 2026-09-27 00:00 |
16:51:57.81 |
-03:02:36.7 |
HIP 82527 |
14.92 |
| 2026-09-27 12:00 |
16:52:25.01 |
-03:14:11.9 |
HIP 82462 |
19.29 |
| 2026-09-28 00:00 |
16:52:52.36 |
-03:25:42.9 |
HIP 82635 |
11.14 |
| 2026-09-28 12:00 |
16:53:19.88 |
-03:37:09.9 |
HIP 82635 |
6.80 |
| 2026-09-29 00:00 |
16:53:47.56 |
-03:48:32.9 |
HIP 82635 |
17.96 |
| 2026-09-29 12:00 |
16:54:15.41 |
-03:59:51.7 |
HIP 82715 |
10.37 |
| 2026-09-30 00:00 |
16:54:43.41 |
-04:11:06.6 |
HIP 82715 |
4.31 |
| 2026-09-30 12:00 |
16:55:11.56 |
-04:22:17.5 |
HIP 82688 |
15.92 |
| 2026-10-01 00:00 |
16:55:39.88 |
-04:33:24.4 |
HIP 82854 |
18.40 |
| 2026-10-01 12:00 |
16:56:08.35 |
-04:44:27.3 |
HIP 82854 |
7.38 |
| 2026-10-02 00:00 |
16:56:36.97 |
-04:55:26.3 |
HIP 82854 |
10.73 |
| 2026-10-02 12:00 |
16:57:05.75 |
-05:06:21.3 |
HIP 82854 |
22.76 |
| 2026-10-03 00:00 |
16:57:34.68 |
-05:17:12.5 |
HIP 82961 |
24.37 |
| 2026-10-03 12:00 |
16:58:03.76 |
-05:27:59.8 |
HIP 82961 |
18.20 |
| 2026-10-04 00:00 |
16:58:32.99 |
-05:38:43.2 |
HIP 83145 |
17.99 |
| 2026-10-04 12:00 |
16:59:02.37 |
-05:49:22.8 |
HIP 83145 |
7.02 |
| 2026-10-05 00:00 |
16:59:31.89 |
-05:59:58.6 |
HIP 83145 |
10.38 |
| 2026-10-05 12:00 |
17:00:01.57 |
-06:10:30.6 |
HIP 83145 |
22.28 |
| 2026-10-06 00:00 |
17:00:31.38 |
-06:20:58.7 |
HIP 83311 |
28.06 |
| 2026-10-06 12:00 |
17:01:01.35 |
-06:31:23.2 |
HIP 83311 |
15.27 |
| 2026-10-07 00:00 |
17:01:31.45 |
-06:41:43.9 |
HIP 83311 |
2.60 |
| 2026-10-07 12:00 |
17:02:01.70 |
-06:52:00.8 |
HIP 83311 |
10.28 |
| 2026-10-08 00:00 |
17:02:32.08 |
-07:02:14.1 |
HIP 83282 |
19.51 |
| 2026-10-08 12:00 |
17:03:02.61 |
-07:12:23.7 |
HIP 83282 |
29.11 |
| 2026-10-09 00:00 |
17:03:33.28 |
-07:22:29.6 |
HIP 83548 |
24.38 |
| 2026-10-09 12:00 |
17:04:04.08 |
-07:32:31.9 |
HIP 83548 |
11.78 |
| 2026-10-10 00:00 |
17:04:35.01 |
-07:42:30.5 |
HIP 83548 |
1.06 |
| 2026-10-10 12:00 |
17:05:06.09 |
-07:52:25.6 |
HIP 83548 |
13.40 |
| 2026-10-11 00:00 |
17:05:37.29 |
-08:02:17.0 |
HIP 83729 |
21.10 |