P/2024 T1 (Rankin)
メタデータ
| 項目 |
値 |
| Designation |
P/2024 T1 (Rankin) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-09-30T10:53:27.006720Z |
| Orbit solution date (soln_date, UTC) |
2025-02-20T14:12:25Z |
| Obs used |
158 |
| NEO |
- |
| M1 |
16.100 |
| K1 |
4.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-10-02T11:50:41.510400Z |
| Discovery magnitude (MPC) |
19.82 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2024-11-28.0000000 |
| e |
0.65385983 |
| q (au) |
2.287077 |
| a (au) |
6.607373 |
| i (deg) |
17.619161 |
| Ω (om, deg) |
279.709192 |
| ω (w, deg) |
164.882104 |
| M (ma, deg) |
3.397502 |
等級
散乱 + 全体線形
$$
M_a = (11.598 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.598 |
| n |
6.000 |
| gf |
0.941 |
| gb |
-0.766 |
| k |
0.997 |
| δ90 |
7.690 |
| 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) |
| 2026-02-03 00:00 |
12:47:02.59 |
-26:25:56.9 |
HIP 62392 |
26.47 |
| 2026-02-03 12:00 |
12:46:58.08 |
-26:27:41.6 |
HIP 62392 |
28.31 |
| 2026-02-04 00:00 |
12:46:53.33 |
-26:29:24.6 |
HIP 62392 |
30.15 |
| 2026-02-04 12:00 |
12:46:48.34 |
-26:31:06.0 |
HIP 62392 |
32.00 |
| 2026-02-05 00:00 |
12:46:43.13 |
-26:32:45.6 |
HIP 62392 |
33.84 |
| 2026-02-05 12:00 |
12:46:37.68 |
-26:34:23.4 |
HIP 62180 |
33.75 |
| 2026-02-06 00:00 |
12:46:32.00 |
-26:35:59.6 |
HIP 62180 |
31.78 |
| 2026-02-06 12:00 |
12:46:26.08 |
-26:37:34.0 |
HIP 62180 |
29.80 |
| 2026-02-07 00:00 |
12:46:19.94 |
-26:39:06.6 |
HIP 62180 |
27.80 |
| 2026-02-07 12:00 |
12:46:13.57 |
-26:40:37.4 |
HIP 62180 |
25.78 |
| 2026-02-08 00:00 |
12:46:06.97 |
-26:42:06.4 |
HIP 62180 |
23.75 |
| 2026-02-08 12:00 |
12:46:00.14 |
-26:43:33.6 |
HIP 62180 |
21.70 |
| 2026-02-09 00:00 |
12:45:53.08 |
-26:44:59.0 |
HIP 62180 |
19.63 |
| 2026-02-09 12:00 |
12:45:45.80 |
-26:46:22.6 |
HIP 62180 |
17.54 |
| 2026-02-10 00:00 |
12:45:38.29 |
-26:47:44.3 |
HIP 62180 |
15.44 |
| 2026-02-10 12:00 |
12:45:30.55 |
-26:49:04.2 |
HIP 62180 |
13.32 |
| 2026-02-11 00:00 |
12:45:22.59 |
-26:50:22.2 |
HIP 62180 |
11.19 |
| 2026-02-11 12:00 |
12:45:14.41 |
-26:51:38.3 |
HIP 62180 |
9.05 |
| 2026-02-12 00:00 |
12:45:06.00 |
-26:52:52.5 |
HIP 62180 |
6.92 |
| 2026-02-12 12:00 |
12:44:57.37 |
-26:54:04.8 |
HIP 62180 |
4.85 |
| 2026-02-13 00:00 |
12:44:48.53 |
-26:55:15.2 |
HIP 62180 |
3.03 |
| 2026-02-13 12:00 |
12:44:39.46 |
-26:56:23.6 |
HIP 62180 |
2.27 |
| 2026-02-14 00:00 |
12:44:30.18 |
-26:57:30.1 |
HIP 62180 |
3.43 |
| 2026-02-14 12:00 |
12:44:20.68 |
-26:58:34.7 |
HIP 62180 |
5.43 |
| 2026-02-15 00:00 |
12:44:10.97 |
-26:59:37.3 |
HIP 62180 |
7.65 |
| 2026-02-15 12:00 |
12:44:01.04 |
-27:00:37.9 |
HIP 62180 |
9.98 |
| 2026-02-16 00:00 |
12:43:50.90 |
-27:01:36.5 |
HIP 62180 |
12.36 |
| 2026-02-16 12:00 |
12:43:40.55 |
-27:02:33.2 |
HIP 62180 |
14.79 |
| 2026-02-17 00:00 |
12:43:30.00 |
-27:03:27.8 |
HIP 62180 |
17.26 |
| 2026-02-17 12:00 |
12:43:19.23 |
-27:04:20.4 |
HIP 62063 |
18.06 |
| 2026-02-18 00:00 |
12:43:08.26 |
-27:05:11.0 |
HIP 62063 |
17.20 |
| 2026-02-18 12:00 |
12:42:57.09 |
-27:05:59.6 |
HIP 62063 |
16.74 |
| 2026-02-19 00:00 |
12:42:45.72 |
-27:06:46.1 |
HIP 62063 |
16.74 |
| 2026-02-19 12:00 |
12:42:34.15 |
-27:07:30.6 |
HIP 62063 |
17.19 |
| 2026-02-20 00:00 |
12:42:22.38 |
-27:08:13.0 |
HIP 62063 |
18.09 |
| 2026-02-20 12:00 |
12:42:10.41 |
-27:08:53.4 |
HIP 62063 |
19.39 |
| 2026-02-21 00:00 |
12:41:58.25 |
-27:09:31.7 |
HIP 62063 |
21.02 |
| 2026-02-21 12:00 |
12:41:45.90 |
-27:10:07.9 |
HIP 62063 |
22.93 |
| 2026-02-22 00:00 |
12:41:33.37 |
-27:10:42.0 |
HIP 61870 |
23.59 |
| 2026-02-22 12:00 |
12:41:20.64 |
-27:11:14.1 |
HIP 61870 |
22.90 |
| 2026-02-23 00:00 |
12:41:07.73 |
-27:11:44.1 |
HIP 61870 |
22.53 |
| 2026-02-23 12:00 |
12:40:54.64 |
-27:12:11.9 |
HIP 61870 |
22.48 |
| 2026-02-24 00:00 |
12:40:41.37 |
-27:12:37.7 |
HIP 61870 |
22.79 |