メタデータ
| 項目 |
値 |
| Designation |
C/2022 R6 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-08-26T00:30:18.253440Z |
| Orbit solution date (soln_date, UTC) |
2026-05-08T13:42:12Z |
| Obs used |
2396 |
| NEO |
- |
| M1 |
5.100 |
| K1 |
9.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2022-09-14T13:46:32.822400Z |
| Discovery magnitude (MPC) |
20.04 i |
| 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) |
2025-03-18.0000000 |
| e |
1.00498169 |
| q (au) |
6.565708 |
| a (au) |
-1317.967927 |
| i (deg) |
57.018595 |
| Ω (om, deg) |
150.786447 |
| ω (w, deg) |
319.899709 |
| M (ma, deg) |
-0.003317 |
等級
散乱 + 全体線形
$$
M_a = (4.920 + 4.966\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.920 |
| n |
4.966 |
| gf |
0.998 |
| gb |
-0.695 |
| k |
0.801 |
| δ90 |
9.390 |
| 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) |
| 2026-05-12 00:00 |
08:38:03.34 |
+02:13:56.8 |
HIP 42426 |
16.43 |
| 2026-05-12 12:00 |
08:38:14.55 |
+02:16:15.8 |
HIP 42426 |
14.88 |
| 2026-05-13 00:00 |
08:38:25.87 |
+02:18:33.7 |
HIP 42426 |
14.09 |
| 2026-05-13 12:00 |
08:38:37.30 |
+02:20:50.6 |
HIP 42426 |
14.19 |
| 2026-05-14 00:00 |
08:38:48.84 |
+02:23:06.5 |
HIP 42426 |
15.17 |
| 2026-05-14 12:00 |
08:39:00.48 |
+02:25:21.3 |
HIP 42426 |
16.88 |
| 2026-05-15 00:00 |
08:39:12.23 |
+02:27:35.2 |
HIP 42426 |
19.15 |
| 2026-05-15 12:00 |
08:39:24.08 |
+02:29:48.1 |
HIP 42426 |
21.79 |
| 2026-05-16 00:00 |
08:39:36.04 |
+02:32:00.0 |
HIP 42426 |
24.70 |
| 2026-05-16 12:00 |
08:39:48.10 |
+02:34:10.8 |
HIP 42648 |
25.36 |
| 2026-05-17 00:00 |
08:40:00.27 |
+02:36:20.6 |
HIP 42648 |
22.22 |
| 2026-05-17 12:00 |
08:40:12.54 |
+02:38:29.4 |
HIP 42648 |
19.25 |
| 2026-05-18 00:00 |
08:40:24.91 |
+02:40:37.3 |
HIP 42648 |
16.58 |
| 2026-05-18 12:00 |
08:40:37.38 |
+02:42:44.1 |
HIP 42648 |
14.36 |
| 2026-05-19 00:00 |
08:40:49.95 |
+02:44:49.9 |
HIP 42648 |
12.86 |
| 2026-05-19 12:00 |
08:41:02.63 |
+02:46:54.7 |
HIP 42648 |
12.33 |
| 2026-05-20 00:00 |
08:41:15.40 |
+02:48:58.5 |
HIP 42648 |
12.92 |
| 2026-05-20 12:00 |
08:41:28.27 |
+02:51:01.3 |
HIP 42648 |
14.50 |
| 2026-05-21 00:00 |
08:41:41.23 |
+02:53:03.1 |
HIP 42648 |
16.80 |
| 2026-05-21 12:00 |
08:41:54.29 |
+02:55:03.9 |
HIP 42648 |
19.57 |
| 2026-05-22 00:00 |
08:42:07.45 |
+02:57:03.7 |
HIP 42648 |
22.65 |
| 2026-05-22 12:00 |
08:42:20.71 |
+02:59:02.5 |
HIP 42648 |
25.93 |
| 2026-05-23 00:00 |
08:42:34.05 |
+03:01:00.3 |
HIP 42869 |
24.08 |
| 2026-05-23 12:00 |
08:42:47.49 |
+03:02:57.2 |
HIP 42869 |
20.58 |
| 2026-05-24 00:00 |
08:43:01.03 |
+03:04:53.0 |
HIP 42869 |
17.22 |
| 2026-05-24 12:00 |
08:43:14.65 |
+03:06:47.9 |
HIP 42869 |
14.11 |
| 2026-05-25 00:00 |
08:43:28.37 |
+03:08:41.7 |
HIP 42869 |
11.46 |
| 2026-05-25 12:00 |
08:43:42.18 |
+03:10:34.6 |
HIP 42869 |
9.69 |
| 2026-05-26 00:00 |
08:43:56.07 |
+03:12:26.6 |
HIP 42869 |
9.31 |
| 2026-05-26 12:00 |
08:44:10.06 |
+03:14:17.5 |
HIP 42869 |
10.50 |
| 2026-05-27 00:00 |
08:44:24.13 |
+03:16:07.5 |
HIP 42869 |
12.83 |
| 2026-05-27 12:00 |
08:44:38.29 |
+03:17:56.5 |
HIP 42869 |
15.82 |
| 2026-05-28 00:00 |
08:44:52.54 |
+03:19:44.5 |
HIP 42869 |
19.18 |
| 2026-05-28 12:00 |
08:45:06.87 |
+03:21:31.6 |
HIP 42869 |
22.73 |
| 2026-05-29 00:00 |
08:45:21.29 |
+03:23:17.7 |
HIP 43075 |
18.76 |
| 2026-05-29 12:00 |
08:45:35.80 |
+03:25:02.9 |
HIP 43075 |
14.77 |
| 2026-05-30 00:00 |
08:45:50.38 |
+03:26:47.1 |
HIP 43075 |
10.79 |
| 2026-05-30 12:00 |
08:46:05.05 |
+03:28:30.3 |
HIP 43075 |
6.86 |
| 2026-05-31 00:00 |
08:46:19.81 |
+03:30:12.6 |
HIP 43075 |
3.25 |
| 2026-05-31 12:00 |
08:46:34.64 |
+03:31:54.0 |
HIP 43075 |
2.67 |
| 2026-06-01 00:00 |
08:46:49.56 |
+03:33:34.4 |
HIP 43075 |
6.09 |
| 2026-06-01 12:00 |
08:47:04.56 |
+03:35:13.8 |
HIP 43075 |
10.03 |
| 2026-06-02 00:00 |
08:47:19.64 |
+03:36:52.3 |
HIP 43075 |
14.07 |