メタデータ
| 項目 |
値 |
| Designation |
265P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2003-09-05T19:24:24.888960Z |
| Orbit solution date (soln_date, UTC) |
2026-09-16T06:51:54Z |
| Obs used |
539 |
| NEO |
- |
| M1 |
14.600 |
| K1 |
16.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2003-10-13.0000000 |
| e |
0.64606459 |
| q (au) |
1.505476 |
| a (au) |
4.253533 |
| i (deg) |
14.691611 |
| Ω (om, deg) |
344.712348 |
| ω (w, deg) |
32.720308 |
| M (ma, deg) |
4.178512 |
等級
散乱 + 全体線形
$$
M_a = (15.883 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.883 |
| n |
2.000 |
| gf |
0.993 |
| gb |
-0.507 |
| 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) |
| 2026-09-20 00:00 |
13:21:15.43 |
-18:42:16.5 |
HIP 65203 |
7.66 |
| 2026-09-20 12:00 |
13:21:32.74 |
-18:43:47.7 |
HIP 65203 |
3.30 |
| 2026-09-21 00:00 |
13:21:50.10 |
-18:45:19.4 |
HIP 65203 |
1.20 |
| 2026-09-21 12:00 |
13:22:07.50 |
-18:46:51.6 |
HIP 65203 |
5.53 |
| 2026-09-22 00:00 |
13:22:24.95 |
-18:48:24.2 |
HIP 65203 |
9.93 |
| 2026-09-22 12:00 |
13:22:42.44 |
-18:49:57.2 |
HIP 65203 |
14.35 |
| 2026-09-23 00:00 |
13:22:59.98 |
-18:51:30.7 |
HIP 65203 |
18.78 |
| 2026-09-23 12:00 |
13:23:17.56 |
-18:53:04.7 |
HIP 65203 |
23.22 |
| 2026-09-24 00:00 |
13:23:35.18 |
-18:54:39.1 |
HIP 65203 |
27.67 |
| 2026-09-24 12:00 |
13:23:52.85 |
-18:56:13.9 |
HIP 65203 |
32.14 |
| 2026-09-25 00:00 |
13:24:10.56 |
-18:57:49.1 |
HIP 65279 |
36.44 |
| 2026-09-25 12:00 |
13:24:28.31 |
-18:59:24.8 |
HIP 65279 |
37.69 |
| 2026-09-26 00:00 |
13:24:46.10 |
-19:01:00.9 |
HIP 65279 |
39.41 |
| 2026-09-26 12:00 |
13:25:03.93 |
-19:02:37.4 |
HIP 65279 |
41.55 |
| 2026-09-27 00:00 |
13:25:21.80 |
-19:04:14.3 |
HIP 65279 |
44.05 |
| 2026-09-27 12:00 |
13:25:39.71 |
-19:05:51.6 |
HIP 65279 |
46.86 |
| 2026-09-28 00:00 |
13:25:57.66 |
-19:07:29.3 |
HIP 65279 |
49.93 |
| 2026-09-28 12:00 |
13:26:15.64 |
-19:09:07.5 |
HIP 65809 |
45.61 |
| 2026-09-29 00:00 |
13:26:33.67 |
-19:10:46.0 |
HIP 65809 |
41.07 |
| 2026-09-29 12:00 |
13:26:51.73 |
-19:12:25.0 |
HIP 65809 |
36.53 |
| 2026-09-30 00:00 |
13:27:09.83 |
-19:14:04.3 |
HIP 65809 |
31.98 |
| 2026-09-30 12:00 |
13:27:27.96 |
-19:15:44.1 |
HIP 65809 |
27.44 |
| 2026-10-01 00:00 |
13:27:46.13 |
-19:17:24.2 |
HIP 65809 |
22.90 |
| 2026-10-01 12:00 |
13:28:04.34 |
-19:19:04.7 |
HIP 65809 |
18.40 |
| 2026-10-02 00:00 |
13:28:22.58 |
-19:20:45.6 |
HIP 65809 |
13.95 |
| 2026-10-02 12:00 |
13:28:40.85 |
-19:22:26.8 |
HIP 65809 |
9.67 |
| 2026-10-03 00:00 |
13:28:59.16 |
-19:24:08.5 |
HIP 65809 |
5.93 |
| 2026-10-03 12:00 |
13:29:17.50 |
-19:25:50.5 |
HIP 65809 |
4.46 |
| 2026-10-04 00:00 |
13:29:35.87 |
-19:27:32.9 |
HIP 65809 |
6.92 |
| 2026-10-04 12:00 |
13:29:54.28 |
-19:29:15.7 |
HIP 65809 |
10.93 |
| 2026-10-05 00:00 |
13:30:12.72 |
-19:30:58.8 |
HIP 65929 |
10.36 |
| 2026-10-05 12:00 |
13:30:31.18 |
-19:32:42.3 |
HIP 65929 |
5.74 |
| 2026-10-06 00:00 |
13:30:49.68 |
-19:34:26.1 |
HIP 65929 |
1.55 |
| 2026-10-06 12:00 |
13:31:08.21 |
-19:36:10.3 |
HIP 65929 |
3.99 |
| 2026-10-07 00:00 |
13:31:26.76 |
-19:37:54.9 |
HIP 65929 |
8.58 |
| 2026-10-07 12:00 |
13:31:45.35 |
-19:39:39.8 |
HIP 65929 |
13.26 |
| 2026-10-08 00:00 |
13:32:03.96 |
-19:41:25.0 |
HIP 65929 |
17.97 |
| 2026-10-08 12:00 |
13:32:22.60 |
-19:43:10.5 |
HIP 66114 |
19.88 |
| 2026-10-09 00:00 |
13:32:41.26 |
-19:44:56.4 |
HIP 66114 |
16.11 |
| 2026-10-09 12:00 |
13:32:59.95 |
-19:46:42.7 |
HIP 66114 |
12.98 |
| 2026-10-10 00:00 |
13:33:18.67 |
-19:48:29.2 |
HIP 66114 |
11.06 |
| 2026-10-10 12:00 |
13:33:37.41 |
-19:50:16.1 |
HIP 66114 |
11.00 |
| 2026-10-11 00:00 |
13:33:56.17 |
-19:52:03.3 |
HIP 66114 |
12.84 |