メタデータ
| 項目 |
値 |
| Designation |
C/2023 Q2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-06-24T02:17:12.935040Z |
| Orbit solution date (soln_date, UTC) |
2024-07-07T00:42:12Z |
| Obs used |
136 |
| NEO |
- |
| M1 |
11.400 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-08-23T06:04:38.208000Z |
| Discovery magnitude (MPC) |
21.14 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) |
2023-10-03.0000000 |
| e |
0.99053833 |
| q (au) |
3.209446 |
| a (au) |
339.205025 |
| i (deg) |
104.054511 |
| Ω (om, deg) |
92.682369 |
| ω (w, deg) |
171.725609 |
| M (ma, deg) |
359.958177 |
等級
散乱 + 全体線形
$$
M_a = (13.694 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.694 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-06-01 00:00 |
07:33:21.75 |
-61:05:38.2 |
HIP 36861 |
9.77 |
| 2026-06-01 12:00 |
07:33:44.94 |
-61:01:35.0 |
HIP 36861 |
7.73 |
| 2026-06-02 00:00 |
07:34:08.20 |
-60:57:33.5 |
HIP 36861 |
8.49 |
| 2026-06-02 12:00 |
07:34:31.51 |
-60:53:33.9 |
HIP 36861 |
11.48 |
| 2026-06-03 00:00 |
07:34:54.87 |
-60:49:36.0 |
HIP 36861 |
15.44 |
| 2026-06-03 12:00 |
07:35:18.29 |
-60:45:40.0 |
HIP 36861 |
19.79 |
| 2026-06-04 00:00 |
07:35:41.76 |
-60:41:45.7 |
HIP 37212 |
21.96 |
| 2026-06-04 12:00 |
07:36:05.27 |
-60:37:53.2 |
HIP 37212 |
18.73 |
| 2026-06-05 00:00 |
07:36:28.84 |
-60:34:02.5 |
HIP 37212 |
16.29 |
| 2026-06-05 12:00 |
07:36:52.46 |
-60:30:13.6 |
HIP 37212 |
15.00 |
| 2026-06-06 00:00 |
07:37:16.12 |
-60:26:26.5 |
HIP 37212 |
15.16 |
| 2026-06-06 12:00 |
07:37:39.82 |
-60:22:41.2 |
HIP 37212 |
16.70 |
| 2026-06-07 00:00 |
07:38:03.57 |
-60:18:57.8 |
HIP 37212 |
19.28 |
| 2026-06-07 12:00 |
07:38:27.37 |
-60:15:16.1 |
HIP 37212 |
22.54 |
| 2026-06-08 00:00 |
07:38:51.20 |
-60:11:36.3 |
HIP 37454 |
21.57 |
| 2026-06-08 12:00 |
07:39:15.08 |
-60:07:58.3 |
HIP 37454 |
17.19 |
| 2026-06-09 00:00 |
07:39:38.99 |
-60:04:22.1 |
HIP 37454 |
13.03 |
| 2026-06-09 12:00 |
07:40:02.94 |
-60:00:47.7 |
HIP 37454 |
9.36 |
| 2026-06-10 00:00 |
07:40:26.93 |
-59:57:15.2 |
HIP 37454 |
6.96 |
| 2026-06-10 12:00 |
07:40:50.96 |
-59:53:44.5 |
HIP 37454 |
7.20 |
| 2026-06-11 00:00 |
07:41:15.02 |
-59:50:15.7 |
HIP 37454 |
9.86 |
| 2026-06-11 12:00 |
07:41:39.11 |
-59:46:48.7 |
HIP 37454 |
13.58 |
| 2026-06-12 00:00 |
07:42:03.23 |
-59:43:23.5 |
HIP 37454 |
17.68 |
| 2026-06-12 12:00 |
07:42:27.39 |
-59:40:00.2 |
HIP 37753 |
18.79 |
| 2026-06-13 00:00 |
07:42:51.57 |
-59:36:38.8 |
HIP 37753 |
14.50 |
| 2026-06-13 12:00 |
07:43:15.79 |
-59:33:19.2 |
HIP 37753 |
10.44 |
| 2026-06-14 00:00 |
07:43:40.03 |
-59:30:01.5 |
HIP 37753 |
6.94 |
| 2026-06-14 12:00 |
07:44:04.29 |
-59:26:45.6 |
HIP 37753 |
5.27 |
| 2026-06-15 00:00 |
07:44:28.58 |
-59:23:31.6 |
HIP 37753 |
6.86 |
| 2026-06-15 12:00 |
07:44:52.89 |
-59:20:19.5 |
HIP 37753 |
10.28 |
| 2026-06-16 00:00 |
07:45:17.23 |
-59:17:09.2 |
HIP 37753 |
14.26 |
| 2026-06-16 12:00 |
07:45:41.58 |
-59:14:00.9 |
HIP 37846 |
16.77 |
| 2026-06-17 00:00 |
07:46:05.95 |
-59:10:54.3 |
HIP 37846 |
14.32 |
| 2026-06-17 12:00 |
07:46:30.35 |
-59:07:49.7 |
HIP 37846 |
12.99 |
| 2026-06-18 00:00 |
07:46:54.75 |
-59:04:47.0 |
HIP 37963 |
10.38 |
| 2026-06-18 12:00 |
07:47:19.18 |
-59:01:46.1 |
HIP 37963 |
8.02 |
| 2026-06-19 00:00 |
07:47:43.61 |
-58:58:47.1 |
HIP 37963 |
7.70 |
| 2026-06-19 12:00 |
07:48:08.06 |
-58:55:50.0 |
HIP 37963 |
9.60 |
| 2026-06-20 00:00 |
07:48:32.52 |
-58:52:54.7 |
HIP 37963 |
12.75 |
| 2026-06-20 12:00 |
07:48:56.99 |
-58:50:01.3 |
HIP 37963 |
16.43 |
| 2026-06-21 00:00 |
07:49:21.47 |
-58:47:09.8 |
HIP 38234 |
13.18 |
| 2026-06-21 12:00 |
07:49:45.96 |
-58:44:20.2 |
HIP 38234 |
9.58 |
| 2026-06-22 00:00 |
07:50:10.45 |
-58:41:32.4 |
HIP 38234 |
6.82 |