メタデータ
| 項目 |
値 |
| Designation |
165P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2000-06-15T19:02:32.447040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:27:43Z |
| Obs used |
143 |
| NEO |
- |
| M1 |
5.900 |
| K1 |
11.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2001-07-24.0000000 |
| e |
0.62158598 |
| q (au) |
6.830373 |
| a (au) |
18.050001 |
| i (deg) |
15.905264 |
| Ω (om, deg) |
0.638768 |
| ω (w, deg) |
126.205423 |
| M (ma, deg) |
5.182220 |
等級
散乱 + 全体線形
$$
M_a = (4.024 + 5.222\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.024 |
| n |
5.222 |
| gf |
1.000 |
| gb |
-0.919 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
19:34:58.14 |
-37:28:09.7 |
HIP 96250 |
9.02 |
| 2026-07-29 12:00 |
19:34:53.42 |
-37:28:13.1 |
HIP 96250 |
8.16 |
| 2026-07-30 00:00 |
19:34:48.71 |
-37:28:16.2 |
HIP 96250 |
7.33 |
| 2026-07-30 12:00 |
19:34:44.01 |
-37:28:19.3 |
HIP 96250 |
6.54 |
| 2026-07-31 00:00 |
19:34:39.33 |
-37:28:22.1 |
HIP 96250 |
5.79 |
| 2026-07-31 12:00 |
19:34:34.65 |
-37:28:24.7 |
HIP 96250 |
5.10 |
| 2026-08-01 00:00 |
19:34:30.00 |
-37:28:27.2 |
HIP 96250 |
4.50 |
| 2026-08-01 12:00 |
19:34:25.35 |
-37:28:29.4 |
HIP 96250 |
4.04 |
| 2026-08-02 00:00 |
19:34:20.72 |
-37:28:31.5 |
HIP 96250 |
3.74 |
| 2026-08-02 12:00 |
19:34:16.11 |
-37:28:33.4 |
HIP 96250 |
3.67 |
| 2026-08-03 00:00 |
19:34:11.51 |
-37:28:35.1 |
HIP 96250 |
3.82 |
| 2026-08-03 12:00 |
19:34:06.93 |
-37:28:36.6 |
HIP 96250 |
4.17 |
| 2026-08-04 00:00 |
19:34:02.36 |
-37:28:38.0 |
HIP 96250 |
4.68 |
| 2026-08-04 12:00 |
19:33:57.82 |
-37:28:39.1 |
HIP 96250 |
5.29 |
| 2026-08-05 00:00 |
19:33:53.28 |
-37:28:40.1 |
HIP 96250 |
5.98 |
| 2026-08-05 12:00 |
19:33:48.77 |
-37:28:40.9 |
HIP 96250 |
6.71 |
| 2026-08-06 00:00 |
19:33:44.27 |
-37:28:41.5 |
HIP 96250 |
7.48 |
| 2026-08-06 12:00 |
19:33:39.80 |
-37:28:41.9 |
HIP 96250 |
8.27 |
| 2026-08-07 00:00 |
19:33:35.34 |
-37:28:42.1 |
HIP 96250 |
9.08 |
| 2026-08-07 12:00 |
19:33:30.90 |
-37:28:42.1 |
HIP 96181 |
9.16 |
| 2026-08-08 00:00 |
19:33:26.48 |
-37:28:42.0 |
HIP 96181 |
9.07 |
| 2026-08-08 12:00 |
19:33:22.08 |
-37:28:41.6 |
HIP 96181 |
9.06 |
| 2026-08-09 00:00 |
19:33:17.70 |
-37:28:41.1 |
HIP 96181 |
9.15 |
| 2026-08-09 12:00 |
19:33:13.34 |
-37:28:40.4 |
HIP 96181 |
9.31 |
| 2026-08-10 00:00 |
19:33:09.00 |
-37:28:39.5 |
HIP 96181 |
9.56 |
| 2026-08-10 12:00 |
19:33:04.69 |
-37:28:38.4 |
HIP 96181 |
9.87 |
| 2026-08-11 00:00 |
19:33:00.39 |
-37:28:37.1 |
HIP 96181 |
10.25 |
| 2026-08-11 12:00 |
19:32:56.12 |
-37:28:35.6 |
HIP 96181 |
10.68 |
| 2026-08-12 00:00 |
19:32:51.88 |
-37:28:34.0 |
HIP 96181 |
11.16 |
| 2026-08-12 12:00 |
19:32:47.65 |
-37:28:32.2 |
HIP 96181 |
11.68 |
| 2026-08-13 00:00 |
19:32:43.45 |
-37:28:30.1 |
HIP 96181 |
12.23 |
| 2026-08-13 12:00 |
19:32:39.28 |
-37:28:27.9 |
HIP 96181 |
12.81 |
| 2026-08-14 00:00 |
19:32:35.13 |
-37:28:25.5 |
HIP 96181 |
13.42 |
| 2026-08-14 12:00 |
19:32:31.00 |
-37:28:22.9 |
HIP 96181 |
14.05 |
| 2026-08-15 00:00 |
19:32:26.90 |
-37:28:20.2 |
HIP 96181 |
14.70 |
| 2026-08-15 12:00 |
19:32:22.82 |
-37:28:17.2 |
HIP 96181 |
15.35 |
| 2026-08-16 00:00 |
19:32:18.78 |
-37:28:14.1 |
HIP 96181 |
16.03 |
| 2026-08-16 12:00 |
19:32:14.75 |
-37:28:10.7 |
HIP 96181 |
16.71 |
| 2026-08-17 00:00 |
19:32:10.76 |
-37:28:07.2 |
HIP 96181 |
17.39 |
| 2026-08-17 12:00 |
19:32:06.79 |
-37:28:03.5 |
HIP 96069 |
17.51 |
| 2026-08-18 00:00 |
19:32:02.85 |
-37:27:59.7 |
HIP 96069 |
17.40 |
| 2026-08-18 12:00 |
19:31:58.94 |
-37:27:55.6 |
HIP 96069 |
17.32 |
| 2026-08-19 00:00 |
19:31:55.06 |
-37:27:51.4 |
HIP 96069 |
17.28 |