メタデータ
| 項目 |
値 |
| Designation |
P/2015 X3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-08-08T01:02:13.706880Z |
| Orbit solution date (soln_date, UTC) |
2023-05-03T22:43:53Z |
| Obs used |
35 |
| NEO |
- |
| M1 |
14.400 |
| K1 |
10.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2015-11-30.0000000 |
| e |
0.43811818 |
| q (au) |
2.822784 |
| a (au) |
5.023804 |
| i (deg) |
24.376797 |
| Ω (om, deg) |
77.328495 |
| ω (w, deg) |
306.951390 |
| M (ma, deg) |
9.974595 |
等級
散乱 + 全体線形
$$
M_a = (11.148 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.148 |
| n |
6.000 |
| 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
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) |
| 2026-03-26 00:00 |
23:22:28.08 |
-24:21:30.1 |
HIP 115377 |
6.74 |
| 2026-03-26 12:00 |
23:23:17.15 |
-24:17:34.5 |
HIP 115377 |
13.33 |
| 2026-03-27 00:00 |
23:24:06.19 |
-24:13:39.2 |
HIP 115430 |
19.94 |
| 2026-03-27 12:00 |
23:24:55.21 |
-24:09:44.0 |
HIP 115649 |
17.08 |
| 2026-03-28 00:00 |
23:25:44.21 |
-24:05:49.1 |
HIP 115649 |
9.49 |
| 2026-03-28 12:00 |
23:26:33.19 |
-24:01:54.3 |
HIP 115649 |
13.03 |
| 2026-03-29 00:00 |
23:27:22.14 |
-23:57:59.8 |
HIP 115649 |
23.02 |
| 2026-03-29 12:00 |
23:28:11.07 |
-23:54:05.4 |
HIP 115941 |
18.93 |
| 2026-03-30 00:00 |
23:28:59.98 |
-23:50:11.3 |
HIP 115941 |
13.48 |
| 2026-03-30 12:00 |
23:29:48.86 |
-23:46:17.3 |
HIP 115941 |
16.88 |
| 2026-03-31 00:00 |
23:30:37.72 |
-23:42:23.7 |
HIP 115941 |
25.85 |
| 2026-03-31 12:00 |
23:31:26.55 |
-23:38:30.2 |
HIP 116033 |
34.92 |
| 2026-04-01 00:00 |
23:32:15.36 |
-23:34:37.0 |
HIP 116033 |
43.06 |
| 2026-04-01 12:00 |
23:33:04.15 |
-23:30:44.0 |
HIP 116311 |
36.36 |
| 2026-04-02 00:00 |
23:33:52.91 |
-23:26:51.3 |
HIP 116311 |
30.34 |
| 2026-04-02 12:00 |
23:34:41.65 |
-23:22:58.8 |
HIP 116311 |
28.29 |
| 2026-04-03 00:00 |
23:35:30.36 |
-23:19:06.6 |
HIP 116311 |
31.00 |
| 2026-04-03 12:00 |
23:36:19.05 |
-23:15:14.7 |
HIP 116311 |
37.45 |
| 2026-04-04 00:00 |
23:37:07.71 |
-23:11:23.0 |
HIP 116690 |
37.61 |
| 2026-04-04 12:00 |
23:37:56.35 |
-23:07:31.7 |
HIP 116690 |
35.41 |
| 2026-04-05 00:00 |
23:38:44.96 |
-23:03:40.6 |
HIP 116750 |
34.26 |
| 2026-04-05 12:00 |
23:39:33.55 |
-22:59:49.8 |
HIP 116750 |
27.89 |
| 2026-04-06 00:00 |
23:40:22.11 |
-22:55:59.3 |
HIP 116750 |
25.75 |
| 2026-04-06 12:00 |
23:41:10.65 |
-22:52:09.2 |
HIP 116750 |
28.78 |
| 2026-04-07 00:00 |
23:41:59.16 |
-22:48:19.3 |
HIP 117038 |
22.32 |
| 2026-04-07 12:00 |
23:42:47.64 |
-22:44:29.8 |
HIP 117038 |
14.16 |
| 2026-04-08 00:00 |
23:43:36.09 |
-22:40:40.6 |
HIP 117038 |
13.47 |
| 2026-04-08 12:00 |
23:44:24.52 |
-22:36:51.8 |
HIP 117038 |
20.99 |
| 2026-04-09 00:00 |
23:45:12.92 |
-22:33:03.3 |
HIP 117038 |
31.27 |
| 2026-04-09 12:00 |
23:46:01.30 |
-22:29:15.2 |
HIP 117328 |
23.30 |
| 2026-04-10 00:00 |
23:46:49.64 |
-22:25:27.5 |
HIP 117328 |
12.23 |
| 2026-04-10 12:00 |
23:47:37.96 |
-22:21:40.1 |
HIP 117328 |
5.87 |
| 2026-04-11 00:00 |
23:48:26.25 |
-22:17:53.1 |
HIP 117328 |
14.07 |
| 2026-04-11 12:00 |
23:49:14.51 |
-22:14:06.5 |
HIP 117556 |
16.57 |
| 2026-04-12 00:00 |
23:50:02.74 |
-22:10:20.3 |
HIP 117556 |
6.87 |
| 2026-04-12 12:00 |
23:50:50.94 |
-22:06:34.5 |
HIP 117556 |
9.86 |
| 2026-04-13 00:00 |
23:51:39.11 |
-22:02:49.2 |
HIP 117556 |
20.60 |
| 2026-04-13 12:00 |
23:52:27.25 |
-21:59:04.2 |
HIP 117821 |
28.08 |
| 2026-04-14 00:00 |
23:53:15.36 |
-21:55:19.7 |
HIP 117821 |
19.19 |
| 2026-04-14 12:00 |
23:54:03.44 |
-21:51:35.7 |
HIP 117886 |
11.19 |
| 2026-04-15 00:00 |
23:54:51.49 |
-21:47:52.1 |
HIP 117886 |
1.83 |
| 2026-04-15 12:00 |
23:55:39.50 |
-21:44:08.9 |
HIP 117929 |
8.41 |
| 2026-04-16 00:00 |
23:56:27.48 |
-21:40:26.3 |
HIP 118108 |
14.34 |