メタデータ
| 項目 |
値 |
| Designation |
C/2022 N2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-07-31T18:28:50.280960Z |
| Orbit solution date (soln_date, UTC) |
2026-05-22T14:12:19Z |
| Obs used |
3868 |
| NEO |
- |
| M1 |
9.100 |
| K1 |
5.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-07-04T10:42:53.971200Z |
| Discovery magnitude (MPC) |
20.66 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2025-04-17.0000000 |
| e |
1.00323735 |
| q (au) |
3.825530 |
| a (au) |
-1181.683871 |
| i (deg) |
5.503042 |
| Ω (om, deg) |
319.741050 |
| ω (w, deg) |
75.389160 |
| M (ma, deg) |
-0.002566 |
等級
散乱 + 全体線形
$$
M_a = (9.696 + 2.882\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.696 |
| n |
2.882 |
| gf |
1.000 |
| gb |
-0.632 |
| 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) |
| 2026-06-01 00:00 |
05:25:11.07 |
+26:55:15.0 |
HIP 25450 |
19.81 |
| 2026-06-01 12:00 |
05:25:48.05 |
+26:55:31.6 |
HIP 25450 |
11.85 |
| 2026-06-02 00:00 |
05:26:25.03 |
+26:55:47.9 |
HIP 25450 |
4.97 |
| 2026-06-02 12:00 |
05:27:01.99 |
+26:56:03.7 |
HIP 25450 |
6.70 |
| 2026-06-03 00:00 |
05:27:38.95 |
+26:56:19.0 |
HIP 25450 |
14.17 |
| 2026-06-03 12:00 |
05:28:15.89 |
+26:56:34.0 |
HIP 25736 |
19.59 |
| 2026-06-04 00:00 |
05:28:52.82 |
+26:56:48.5 |
HIP 25736 |
11.38 |
| 2026-06-04 12:00 |
05:29:29.74 |
+26:57:02.6 |
HIP 25736 |
3.24 |
| 2026-06-05 00:00 |
05:30:06.64 |
+26:57:16.2 |
HIP 25736 |
5.20 |
| 2026-06-05 12:00 |
05:30:43.53 |
+26:57:29.4 |
HIP 25736 |
13.37 |
| 2026-06-06 00:00 |
05:31:20.41 |
+26:57:42.2 |
HIP 25969 |
15.01 |
| 2026-06-06 12:00 |
05:31:57.27 |
+26:57:54.6 |
HIP 25969 |
6.82 |
| 2026-06-07 00:00 |
05:32:34.12 |
+26:58:06.5 |
HIP 25969 |
1.66 |
| 2026-06-07 12:00 |
05:33:10.95 |
+26:58:18.0 |
HIP 25969 |
9.68 |
| 2026-06-08 00:00 |
05:33:47.76 |
+26:58:29.1 |
HIP 26094 |
11.45 |
| 2026-06-08 12:00 |
05:34:24.56 |
+26:58:39.7 |
HIP 26192 |
7.57 |
| 2026-06-09 00:00 |
05:35:01.33 |
+26:58:49.9 |
HIP 26192 |
0.80 |
| 2026-06-09 12:00 |
05:35:38.09 |
+26:58:59.7 |
HIP 26192 |
8.85 |
| 2026-06-10 00:00 |
05:36:14.84 |
+26:59:09.0 |
HIP 26396 |
12.58 |
| 2026-06-10 12:00 |
05:36:51.56 |
+26:59:17.9 |
HIP 26396 |
5.43 |
| 2026-06-11 00:00 |
05:37:28.26 |
+26:59:26.4 |
HIP 26396 |
5.87 |
| 2026-06-11 12:00 |
05:38:04.94 |
+26:59:34.5 |
HIP 26396 |
13.16 |
| 2026-06-12 00:00 |
05:38:41.60 |
+26:59:42.1 |
HIP 26396 |
21.10 |
| 2026-06-12 12:00 |
05:39:18.23 |
+26:59:49.3 |
HIP 26730 |
19.65 |
| 2026-06-13 00:00 |
05:39:54.85 |
+26:59:56.0 |
HIP 26730 |
11.49 |
| 2026-06-13 12:00 |
05:40:31.44 |
+27:00:02.3 |
HIP 26730 |
3.34 |
| 2026-06-14 00:00 |
05:41:08.00 |
+27:00:08.2 |
HIP 26730 |
4.81 |
| 2026-06-14 12:00 |
05:41:44.54 |
+27:00:13.7 |
HIP 26730 |
12.95 |
| 2026-06-15 00:00 |
05:42:21.06 |
+27:00:18.7 |
HIP 26730 |
21.08 |
| 2026-06-15 12:00 |
05:42:57.54 |
+27:00:23.4 |
HIP 27012 |
15.70 |
| 2026-06-16 00:00 |
05:43:34.00 |
+27:00:27.5 |
HIP 27012 |
11.65 |
| 2026-06-16 12:00 |
05:44:10.43 |
+27:00:31.3 |
HIP 27012 |
12.54 |
| 2026-06-17 00:00 |
05:44:46.83 |
+27:00:34.6 |
HIP 27071 |
13.89 |
| 2026-06-17 12:00 |
05:45:23.21 |
+27:00:37.5 |
HIP 27071 |
18.05 |
| 2026-06-18 00:00 |
05:45:59.55 |
+27:00:40.0 |
HIP 27071 |
24.29 |
| 2026-06-18 12:00 |
05:46:35.86 |
+27:00:42.1 |
HIP 27071 |
31.37 |
| 2026-06-19 00:00 |
05:47:12.14 |
+27:00:43.7 |
HIP 27456 |
30.15 |
| 2026-06-19 12:00 |
05:47:48.38 |
+27:00:44.9 |
HIP 27456 |
25.02 |
| 2026-06-20 00:00 |
05:48:24.59 |
+27:00:45.7 |
HIP 27527 |
19.21 |
| 2026-06-20 12:00 |
05:49:00.77 |
+27:00:46.1 |
HIP 27527 |
11.96 |
| 2026-06-21 00:00 |
05:49:36.91 |
+27:00:46.1 |
HIP 27527 |
6.84 |
| 2026-06-21 12:00 |
05:50:13.02 |
+27:00:45.6 |
HIP 27562 |
3.02 |
| 2026-06-22 00:00 |
05:50:49.09 |
+27:00:44.7 |
HIP 27562 |
8.55 |