メタデータ
| 項目 |
値 |
| Designation |
C/2026 N1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2028-01-30T17:54:51.785280Z |
| Orbit solution date (soln_date, UTC) |
2026-08-19T14:42:02Z |
| Obs used |
85 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
11.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2026-07-14T08:11:02.918400Z |
| Discovery magnitude (MPC) |
20.82 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) |
2026-07-27.0000000 |
| e |
0.99949135 |
| q (au) |
5.211795 |
| a (au) |
10246.229512 |
| i (deg) |
86.076664 |
| Ω (om, deg) |
265.693660 |
| ω (w, deg) |
74.308756 |
| M (ma, deg) |
359.999475 |
等級
散乱 + 全体線形
$$
M_a = (3.171 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
3.171 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.502 |
| 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) |
| 2026-09-20 00:00 |
17:14:39.63 |
+00:21:46.9 |
HIP 84217 |
26.33 |
| 2026-09-20 12:00 |
17:14:42.41 |
+00:22:15.3 |
HIP 84217 |
27.04 |
| 2026-09-21 00:00 |
17:14:45.35 |
+00:22:43.6 |
HIP 84217 |
27.80 |
| 2026-09-21 12:00 |
17:14:48.43 |
+00:23:11.8 |
HIP 84246 |
28.51 |
| 2026-09-22 00:00 |
17:14:51.66 |
+00:23:40.0 |
HIP 84246 |
28.88 |
| 2026-09-22 12:00 |
17:14:55.04 |
+00:24:08.1 |
HIP 84246 |
29.32 |
| 2026-09-23 00:00 |
17:14:58.56 |
+00:24:36.1 |
HIP 84246 |
29.80 |
| 2026-09-23 12:00 |
17:15:02.23 |
+00:25:04.1 |
HIP 84246 |
30.35 |
| 2026-09-24 00:00 |
17:15:06.05 |
+00:25:32.1 |
HIP 84246 |
30.95 |
| 2026-09-24 12:00 |
17:15:10.00 |
+00:26:00.0 |
HIP 84246 |
31.61 |
| 2026-09-25 00:00 |
17:15:14.11 |
+00:26:27.9 |
HIP 84246 |
32.32 |
| 2026-09-25 12:00 |
17:15:18.35 |
+00:26:55.8 |
HIP 84246 |
33.09 |
| 2026-09-26 00:00 |
17:15:22.74 |
+00:27:23.7 |
HIP 84246 |
33.91 |
| 2026-09-26 12:00 |
17:15:27.27 |
+00:27:51.5 |
HIP 84246 |
34.79 |
| 2026-09-27 00:00 |
17:15:31.94 |
+00:28:19.4 |
HIP 84246 |
35.73 |
| 2026-09-27 12:00 |
17:15:36.75 |
+00:28:47.3 |
HIP 84246 |
36.71 |
| 2026-09-28 00:00 |
17:15:41.71 |
+00:29:15.2 |
HIP 84246 |
37.75 |
| 2026-09-28 12:00 |
17:15:46.80 |
+00:29:43.2 |
HIP 84246 |
38.84 |
| 2026-09-29 00:00 |
17:15:52.03 |
+00:30:11.1 |
HIP 84246 |
39.98 |
| 2026-09-29 12:00 |
17:15:57.40 |
+00:30:39.2 |
HIP 84246 |
41.16 |
| 2026-09-30 00:00 |
17:16:02.91 |
+00:31:07.2 |
HIP 84500 |
42.13 |
| 2026-09-30 12:00 |
17:16:08.56 |
+00:31:35.4 |
HIP 84500 |
41.45 |
| 2026-10-01 00:00 |
17:16:14.34 |
+00:32:03.6 |
HIP 84707 |
40.28 |
| 2026-10-01 12:00 |
17:16:20.26 |
+00:32:31.8 |
HIP 84707 |
38.77 |
| 2026-10-02 00:00 |
17:16:26.32 |
+00:33:00.2 |
HIP 84707 |
37.24 |
| 2026-10-02 12:00 |
17:16:32.51 |
+00:33:28.6 |
HIP 84707 |
35.67 |
| 2026-10-03 00:00 |
17:16:38.84 |
+00:33:57.2 |
HIP 84707 |
34.08 |
| 2026-10-03 12:00 |
17:16:45.30 |
+00:34:25.8 |
HIP 84707 |
32.45 |
| 2026-10-04 00:00 |
17:16:51.89 |
+00:34:54.6 |
HIP 84707 |
30.80 |
| 2026-10-04 12:00 |
17:16:58.62 |
+00:35:23.4 |
HIP 84707 |
29.13 |
| 2026-10-05 00:00 |
17:17:05.48 |
+00:35:52.5 |
HIP 84707 |
27.43 |
| 2026-10-05 12:00 |
17:17:12.48 |
+00:36:21.6 |
HIP 84707 |
25.71 |
| 2026-10-06 00:00 |
17:17:19.61 |
+00:36:50.9 |
HIP 84707 |
23.97 |
| 2026-10-06 12:00 |
17:17:26.86 |
+00:37:20.4 |
HIP 84707 |
22.21 |
| 2026-10-07 00:00 |
17:17:34.25 |
+00:37:50.0 |
HIP 84707 |
20.45 |
| 2026-10-07 12:00 |
17:17:41.77 |
+00:38:19.8 |
HIP 84707 |
18.68 |
| 2026-10-08 00:00 |
17:17:49.42 |
+00:38:49.7 |
HIP 84707 |
16.92 |
| 2026-10-08 12:00 |
17:17:57.19 |
+00:39:19.9 |
HIP 84707 |
15.19 |
| 2026-10-09 00:00 |
17:18:05.10 |
+00:39:50.3 |
HIP 84707 |
13.50 |
| 2026-10-09 12:00 |
17:18:13.13 |
+00:40:20.8 |
HIP 84707 |
11.89 |
| 2026-10-10 00:00 |
17:18:21.29 |
+00:40:51.6 |
HIP 84707 |
10.43 |
| 2026-10-10 12:00 |
17:18:29.57 |
+00:41:22.6 |
HIP 84707 |
9.20 |
| 2026-10-11 00:00 |
17:18:37.98 |
+00:41:53.9 |
HIP 84707 |
8.33 |