メタデータ
| 項目 |
値 |
| Designation |
P/2023 X3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-04-21T16:49:11.565120Z |
| Orbit solution date (soln_date, UTC) |
2023-12-21T03:13:40Z |
| Obs used |
56 |
| NEO |
- |
| M1 |
14.600 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-12-07T08:24:53.740800Z |
| Discovery magnitude (MPC) |
21.15 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) |
2023-12-01.0000000 |
| e |
0.28714596 |
| q (au) |
3.030219 |
| a (au) |
4.250827 |
| i (deg) |
4.483381 |
| Ω (om, deg) |
62.013419 |
| ω (w, deg) |
40.768411 |
| M (ma, deg) |
343.952019 |
等級
散乱 + 全体線形
$$
M_a = (14.202 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.202 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.651 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
14:09:08.63 |
-11:45:39.7 |
HIP 69092 |
10.53 |
| 2026-07-29 12:00 |
14:09:20.06 |
-11:47:00.5 |
HIP 69092 |
12.80 |
| 2026-07-30 00:00 |
14:09:31.65 |
-11:48:22.1 |
HIP 69092 |
15.39 |
| 2026-07-30 12:00 |
14:09:43.40 |
-11:49:44.5 |
HIP 69092 |
18.21 |
| 2026-07-31 00:00 |
14:09:55.31 |
-11:51:07.5 |
HIP 69305 |
18.72 |
| 2026-07-31 12:00 |
14:10:07.38 |
-11:52:31.3 |
HIP 69305 |
15.47 |
| 2026-08-01 00:00 |
14:10:19.62 |
-11:53:55.8 |
HIP 69305 |
12.21 |
| 2026-08-01 12:00 |
14:10:32.01 |
-11:55:21.0 |
HIP 69305 |
8.93 |
| 2026-08-02 00:00 |
14:10:44.56 |
-11:56:46.8 |
HIP 69305 |
5.68 |
| 2026-08-02 12:00 |
14:10:57.26 |
-11:58:13.4 |
HIP 69305 |
2.78 |
| 2026-08-03 00:00 |
14:11:10.13 |
-11:59:40.7 |
HIP 69305 |
2.59 |
| 2026-08-03 12:00 |
14:11:23.15 |
-12:01:08.6 |
HIP 69305 |
5.49 |
| 2026-08-04 00:00 |
14:11:36.32 |
-12:02:37.2 |
HIP 69305 |
8.87 |
| 2026-08-04 12:00 |
14:11:49.65 |
-12:04:06.5 |
HIP 69348 |
11.13 |
| 2026-08-05 00:00 |
14:12:03.13 |
-12:05:36.5 |
HIP 69348 |
13.84 |
| 2026-08-05 12:00 |
14:12:16.77 |
-12:07:07.1 |
HIP 69470 |
15.95 |
| 2026-08-06 00:00 |
14:12:30.56 |
-12:08:38.3 |
HIP 69470 |
12.44 |
| 2026-08-06 12:00 |
14:12:44.49 |
-12:10:10.3 |
HIP 69470 |
9.05 |
| 2026-08-07 00:00 |
14:12:58.58 |
-12:11:42.8 |
HIP 69470 |
6.03 |
| 2026-08-07 12:00 |
14:13:12.82 |
-12:13:16.0 |
HIP 69470 |
4.40 |
| 2026-08-08 00:00 |
14:13:27.21 |
-12:14:49.8 |
HIP 69470 |
5.62 |
| 2026-08-08 12:00 |
14:13:41.75 |
-12:16:24.3 |
HIP 69470 |
8.59 |
| 2026-08-09 00:00 |
14:13:56.43 |
-12:17:59.3 |
HIP 69470 |
12.13 |
| 2026-08-09 12:00 |
14:14:11.26 |
-12:19:35.0 |
HIP 69470 |
15.88 |
| 2026-08-10 00:00 |
14:14:26.24 |
-12:21:11.3 |
HIP 69657 |
15.38 |
| 2026-08-10 12:00 |
14:14:41.36 |
-12:22:48.2 |
HIP 69657 |
13.11 |
| 2026-08-11 00:00 |
14:14:56.63 |
-12:24:25.7 |
HIP 69657 |
11.80 |
| 2026-08-11 12:00 |
14:15:12.04 |
-12:26:03.7 |
HIP 69657 |
11.82 |
| 2026-08-12 00:00 |
14:15:27.60 |
-12:27:42.4 |
HIP 69657 |
13.20 |
| 2026-08-12 12:00 |
14:15:43.30 |
-12:29:21.6 |
HIP 69657 |
15.61 |
| 2026-08-13 00:00 |
14:15:59.13 |
-12:31:01.4 |
HIP 69657 |
18.68 |
| 2026-08-13 12:00 |
14:16:15.11 |
-12:32:41.8 |
HIP 69657 |
22.16 |
| 2026-08-14 00:00 |
14:16:31.23 |
-12:34:22.7 |
HIP 69657 |
25.89 |
| 2026-08-14 12:00 |
14:16:47.49 |
-12:36:04.2 |
HIP 69657 |
29.80 |
| 2026-08-15 00:00 |
14:17:03.88 |
-12:37:46.2 |
HIP 69657 |
33.84 |
| 2026-08-15 12:00 |
14:17:20.41 |
-12:39:28.8 |
HIP 69657 |
37.98 |
| 2026-08-16 00:00 |
14:17:37.08 |
-12:41:11.8 |
HIP 69945 |
41.34 |
| 2026-08-16 12:00 |
14:17:53.88 |
-12:42:55.4 |
HIP 69945 |
41.40 |
| 2026-08-17 00:00 |
14:18:10.82 |
-12:44:39.5 |
HIP 69974 |
39.99 |
| 2026-08-17 12:00 |
14:18:27.89 |
-12:46:24.1 |
HIP 69974 |
37.09 |
| 2026-08-18 00:00 |
14:18:45.09 |
-12:48:09.3 |
HIP 69974 |
34.52 |
| 2026-08-18 12:00 |
14:19:02.42 |
-12:49:54.9 |
HIP 69974 |
32.37 |
| 2026-08-19 00:00 |
14:19:19.88 |
-12:51:41.0 |
HIP 69974 |
30.76 |