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) |
| 2026-09-20 00:00 |
14:41:51.75 |
-14:57:12.7 |
HIP 71773 |
26.03 |
| 2026-09-20 12:00 |
14:42:16.02 |
-14:59:18.0 |
HIP 71773 |
28.06 |
| 2026-09-21 00:00 |
14:42:40.36 |
-15:01:23.4 |
HIP 71773 |
31.23 |
| 2026-09-21 12:00 |
14:43:04.78 |
-15:03:28.9 |
HIP 71773 |
35.24 |
| 2026-09-22 00:00 |
14:43:29.28 |
-15:05:34.5 |
HIP 72182 |
34.82 |
| 2026-09-22 12:00 |
14:43:53.86 |
-15:07:40.2 |
HIP 72182 |
29.50 |
| 2026-09-23 00:00 |
14:44:18.52 |
-15:09:46.0 |
HIP 72182 |
24.64 |
| 2026-09-23 12:00 |
14:44:43.26 |
-15:11:51.9 |
HIP 72182 |
20.57 |
| 2026-09-24 00:00 |
14:45:08.07 |
-15:13:57.8 |
HIP 72182 |
17.85 |
| 2026-09-24 12:00 |
14:45:32.95 |
-15:16:03.9 |
HIP 72194 |
12.97 |
| 2026-09-25 00:00 |
14:45:57.91 |
-15:18:10.0 |
HIP 72194 |
9.41 |
| 2026-09-25 12:00 |
14:46:22.95 |
-15:20:16.2 |
HIP 72194 |
9.49 |
| 2026-09-26 00:00 |
14:46:48.05 |
-15:22:22.4 |
HIP 72194 |
13.18 |
| 2026-09-26 12:00 |
14:47:13.23 |
-15:24:28.7 |
HIP 72194 |
18.44 |
| 2026-09-27 00:00 |
14:47:38.49 |
-15:26:35.1 |
HIP 72417 |
17.21 |
| 2026-09-27 12:00 |
14:48:03.81 |
-15:28:41.5 |
HIP 72417 |
15.96 |
| 2026-09-28 00:00 |
14:48:29.21 |
-15:30:47.9 |
HIP 72417 |
17.22 |
| 2026-09-28 12:00 |
14:48:54.67 |
-15:32:54.4 |
HIP 72417 |
20.55 |
| 2026-09-29 00:00 |
14:49:20.21 |
-15:35:01.0 |
HIP 72417 |
25.16 |
| 2026-09-29 12:00 |
14:49:45.81 |
-15:37:07.6 |
HIP 72603 |
26.33 |
| 2026-09-30 00:00 |
14:50:11.49 |
-15:39:14.2 |
HIP 72603 |
21.80 |
| 2026-09-30 12:00 |
14:50:37.23 |
-15:41:20.8 |
HIP 72603 |
18.50 |
| 2026-10-01 00:00 |
14:51:03.04 |
-15:43:27.4 |
HIP 72603 |
17.19 |
| 2026-10-01 12:00 |
14:51:28.92 |
-15:45:34.1 |
HIP 72603 |
18.29 |
| 2026-10-02 00:00 |
14:51:54.86 |
-15:47:40.8 |
HIP 72622 |
21.03 |
| 2026-10-02 12:00 |
14:52:20.88 |
-15:49:47.5 |
HIP 72622 |
24.70 |
| 2026-10-03 00:00 |
14:52:46.95 |
-15:51:54.2 |
HIP 72769 |
28.87 |
| 2026-10-03 12:00 |
14:53:13.09 |
-15:54:00.9 |
HIP 72784 |
30.96 |
| 2026-10-04 00:00 |
14:53:39.30 |
-15:56:07.6 |
HIP 72947 |
30.03 |
| 2026-10-04 12:00 |
14:54:05.57 |
-15:58:14.3 |
HIP 72947 |
26.00 |
| 2026-10-05 00:00 |
14:54:31.91 |
-16:00:20.9 |
HIP 72947 |
23.22 |
| 2026-10-05 12:00 |
14:54:58.31 |
-16:02:27.6 |
HIP 72947 |
22.15 |
| 2026-10-06 00:00 |
14:55:24.77 |
-16:04:34.2 |
HIP 72947 |
23.07 |
| 2026-10-06 12:00 |
14:55:51.29 |
-16:06:40.8 |
HIP 72947 |
25.76 |
| 2026-10-07 00:00 |
14:56:17.87 |
-16:08:47.4 |
HIP 73161 |
25.07 |
| 2026-10-07 12:00 |
14:56:44.51 |
-16:10:54.0 |
HIP 73161 |
20.72 |
| 2026-10-08 00:00 |
14:57:11.22 |
-16:13:00.5 |
HIP 73161 |
17.91 |
| 2026-10-08 12:00 |
14:57:37.98 |
-16:15:06.9 |
HIP 73191 |
16.33 |
| 2026-10-09 00:00 |
14:58:04.80 |
-16:17:13.3 |
HIP 73191 |
16.15 |
| 2026-10-09 12:00 |
14:58:31.67 |
-16:19:19.7 |
HIP 73191 |
18.63 |
| 2026-10-10 00:00 |
14:58:58.61 |
-16:21:26.0 |
HIP 73428 |
22.41 |
| 2026-10-10 12:00 |
14:59:25.60 |
-16:23:32.2 |
HIP 73428 |
15.80 |
| 2026-10-11 00:00 |
14:59:52.65 |
-16:25:38.4 |
HIP 73428 |
9.46 |