メタデータ
| 項目 |
値 |
| Designation |
144P/Kushida |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-01-25T19:11:47.238720Z |
| Orbit solution date (soln_date, UTC) |
2024-12-30T09:07:42Z |
| Obs used |
3111 |
| NEO |
- |
| M1 |
12.900 |
| K1 |
18.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2023-08-12T00:16:24.096000Z |
| Discovery magnitude (MPC) |
21.40 V |
| Discovery observatory (MPC) |
A77 · Observatoire Chante-Perdrix, Dauban |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2023-01-18.0000000 |
| e |
0.63510624 |
| q (au) |
1.397336 |
| a (au) |
3.829432 |
| i (deg) |
3.930393 |
| Ω (om, deg) |
242.979419 |
| ω (w, deg) |
216.345483 |
| M (ma, deg) |
310.968153 |
等級
散乱 + 全体線形
$$
M_a = (12.854 + 4.742\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.854 |
| n |
4.742 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2023-06-22 |
2023-11-24 |
+5.1076 |
+0.335 |
| 2023-11-24 |
2024-01-25 |
+49.8144 |
-8.102 |
| 2024-01-26 |
2024-06-29 |
-7.8618 |
-1.021 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
16:49:56.90 |
-21:06:59.8 |
HIP 82244 |
26.36 |
| 2026-09-20 12:00 |
16:50:07.67 |
-21:07:19.3 |
HIP 82519 |
28.26 |
| 2026-09-21 00:00 |
16:50:18.59 |
-21:07:39.1 |
HIP 82519 |
25.85 |
| 2026-09-21 12:00 |
16:50:29.64 |
-21:07:59.0 |
HIP 82519 |
23.44 |
| 2026-09-22 00:00 |
16:50:40.84 |
-21:08:19.1 |
HIP 82519 |
21.04 |
| 2026-09-22 12:00 |
16:50:52.17 |
-21:08:39.4 |
HIP 82519 |
18.68 |
| 2026-09-23 00:00 |
16:51:03.64 |
-21:08:59.8 |
HIP 82519 |
16.39 |
| 2026-09-23 12:00 |
16:51:15.25 |
-21:09:20.3 |
HIP 82519 |
14.22 |
| 2026-09-24 00:00 |
16:51:26.99 |
-21:09:41.1 |
HIP 82519 |
12.25 |
| 2026-09-24 12:00 |
16:51:38.87 |
-21:10:01.9 |
HIP 82519 |
10.62 |
| 2026-09-25 00:00 |
16:51:50.88 |
-21:10:22.9 |
HIP 82519 |
9.54 |
| 2026-09-25 12:00 |
16:52:03.02 |
-21:10:44.1 |
HIP 82519 |
9.23 |
| 2026-09-26 00:00 |
16:52:15.30 |
-21:11:05.4 |
HIP 82519 |
9.79 |
| 2026-09-26 12:00 |
16:52:27.70 |
-21:11:26.8 |
HIP 82519 |
11.11 |
| 2026-09-27 00:00 |
16:52:40.24 |
-21:11:48.4 |
HIP 82519 |
12.99 |
| 2026-09-27 12:00 |
16:52:52.91 |
-21:12:10.1 |
HIP 82519 |
15.23 |
| 2026-09-28 00:00 |
16:53:05.71 |
-21:12:31.9 |
HIP 82519 |
17.72 |
| 2026-09-28 12:00 |
16:53:18.63 |
-21:12:53.9 |
HIP 82519 |
20.37 |
| 2026-09-29 00:00 |
16:53:31.68 |
-21:13:15.9 |
HIP 82519 |
23.15 |
| 2026-09-29 12:00 |
16:53:44.86 |
-21:13:38.1 |
HIP 82519 |
26.01 |
| 2026-09-30 00:00 |
16:53:58.16 |
-21:14:00.4 |
HIP 82519 |
28.96 |
| 2026-09-30 12:00 |
16:54:11.59 |
-21:14:22.8 |
HIP 82822 |
27.32 |
| 2026-10-01 00:00 |
16:54:25.15 |
-21:14:45.3 |
HIP 82822 |
24.96 |
| 2026-10-01 12:00 |
16:54:38.83 |
-21:15:07.9 |
HIP 82822 |
22.78 |
| 2026-10-02 00:00 |
16:54:52.63 |
-21:15:30.6 |
HIP 82822 |
20.84 |
| 2026-10-02 12:00 |
16:55:06.55 |
-21:15:53.4 |
HIP 82822 |
19.25 |
| 2026-10-03 00:00 |
16:55:20.60 |
-21:16:16.3 |
HIP 82822 |
18.11 |
| 2026-10-03 12:00 |
16:55:34.76 |
-21:16:39.3 |
HIP 82822 |
17.52 |
| 2026-10-04 00:00 |
16:55:49.05 |
-21:17:02.3 |
HIP 82822 |
17.56 |
| 2026-10-04 12:00 |
16:56:03.46 |
-21:17:25.5 |
HIP 82822 |
18.22 |
| 2026-10-05 00:00 |
16:56:17.98 |
-21:17:48.7 |
HIP 82822 |
19.48 |
| 2026-10-05 12:00 |
16:56:32.62 |
-21:18:12.0 |
HIP 82822 |
21.23 |
| 2026-10-06 00:00 |
16:56:47.38 |
-21:18:35.4 |
HIP 82822 |
23.37 |
| 2026-10-06 12:00 |
16:57:02.26 |
-21:18:58.8 |
HIP 82822 |
25.82 |
| 2026-10-07 00:00 |
16:57:17.25 |
-21:19:22.3 |
HIP 83005 |
27.74 |
| 2026-10-07 12:00 |
16:57:32.36 |
-21:19:45.9 |
HIP 83005 |
26.84 |
| 2026-10-08 00:00 |
16:57:47.58 |
-21:20:09.5 |
HIP 83005 |
26.38 |
| 2026-10-08 12:00 |
16:58:02.92 |
-21:20:33.2 |
HIP 83005 |
26.41 |
| 2026-10-09 00:00 |
16:58:18.37 |
-21:20:56.9 |
HIP 83005 |
26.93 |
| 2026-10-09 12:00 |
16:58:33.93 |
-21:21:20.7 |
HIP 83224 |
27.69 |
| 2026-10-10 00:00 |
16:58:49.60 |
-21:21:44.5 |
HIP 83224 |
24.05 |
| 2026-10-10 12:00 |
16:59:05.38 |
-21:22:08.3 |
HIP 83224 |
20.40 |
| 2026-10-11 00:00 |
16:59:21.27 |
-21:22:32.2 |
HIP 83224 |
16.74 |