492P/LINEAR
メタデータ
| 項目 |
値 |
| Designation |
492P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-10-19T14:54:08.317440Z |
| Orbit solution date (soln_date, UTC) |
2025-06-26T10:13:30Z |
| Obs used |
799 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
9.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-07-18T11:25:10.848000Z |
| Discovery magnitude (MPC) |
19.90 r |
| Discovery observatory (MPC) |
I41 · Palomar Mountain–ZTF |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2013-11-14.0000000 |
| e |
0.69167729 |
| q (au) |
1.771474 |
| a (au) |
5.745518 |
| i (deg) |
11.458321 |
| Ω (om, deg) |
11.489840 |
| ω (w, deg) |
41.018474 |
| M (ma, deg) |
80.253264 |
等級
散乱 + 全体線形
$$
M_a = (13.477 + 4.164\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.477 |
| n |
4.164 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
12:29:37.98 |
+00:12:53.3 |
HIP 60953 |
22.63 |
| 2026-02-03 12:00 |
12:29:29.59 |
+00:13:35.2 |
HIP 60953 |
23.46 |
| 2026-02-04 00:00 |
12:29:21.02 |
+00:14:18.1 |
HIP 60953 |
24.50 |
| 2026-02-04 12:00 |
12:29:12.25 |
+00:15:02.2 |
HIP 60953 |
25.72 |
| 2026-02-05 00:00 |
12:29:03.29 |
+00:15:47.3 |
HIP 60953 |
27.12 |
| 2026-02-05 12:00 |
12:28:54.14 |
+00:16:33.4 |
HIP 60953 |
28.68 |
| 2026-02-06 00:00 |
12:28:44.81 |
+00:17:20.7 |
HIP 60748 |
27.98 |
| 2026-02-06 12:00 |
12:28:35.29 |
+00:18:08.9 |
HIP 60748 |
26.11 |
| 2026-02-07 00:00 |
12:28:25.58 |
+00:18:58.2 |
HIP 60748 |
24.31 |
| 2026-02-07 12:00 |
12:28:15.68 |
+00:19:48.6 |
HIP 60748 |
22.64 |
| 2026-02-08 00:00 |
12:28:05.61 |
+00:20:40.0 |
HIP 60748 |
21.13 |
| 2026-02-08 12:00 |
12:27:55.35 |
+00:21:32.3 |
HIP 60748 |
19.85 |
| 2026-02-09 00:00 |
12:27:44.91 |
+00:22:25.7 |
HIP 60748 |
18.86 |
| 2026-02-09 12:00 |
12:27:34.29 |
+00:23:20.1 |
HIP 60748 |
18.23 |
| 2026-02-10 00:00 |
12:27:23.49 |
+00:24:15.5 |
HIP 60688 |
17.93 |
| 2026-02-10 12:00 |
12:27:12.51 |
+00:25:11.8 |
HIP 60688 |
15.03 |
| 2026-02-11 00:00 |
12:27:01.36 |
+00:26:09.2 |
HIP 60688 |
12.09 |
| 2026-02-11 12:00 |
12:26:50.03 |
+00:27:07.4 |
HIP 60688 |
9.11 |
| 2026-02-12 00:00 |
12:26:38.53 |
+00:28:06.7 |
HIP 60688 |
6.09 |
| 2026-02-12 12:00 |
12:26:26.85 |
+00:29:06.8 |
HIP 60688 |
3.06 |
| 2026-02-13 00:00 |
12:26:15.01 |
+00:30:07.9 |
HIP 60688 |
0.88 |
| 2026-02-13 12:00 |
12:26:03.00 |
+00:31:09.9 |
HIP 60688 |
3.48 |
| 2026-02-14 00:00 |
12:25:50.82 |
+00:32:12.8 |
HIP 60688 |
6.64 |
| 2026-02-14 12:00 |
12:25:38.47 |
+00:33:16.6 |
HIP 60688 |
9.89 |
| 2026-02-15 00:00 |
12:25:25.96 |
+00:34:21.3 |
HIP 60688 |
13.19 |
| 2026-02-15 12:00 |
12:25:13.29 |
+00:35:26.8 |
HIP 60688 |
16.53 |
| 2026-02-16 00:00 |
12:25:00.45 |
+00:36:33.2 |
HIP 60688 |
19.92 |
| 2026-02-16 12:00 |
12:24:47.46 |
+00:37:40.5 |
HIP 60440 |
19.89 |
| 2026-02-17 00:00 |
12:24:34.31 |
+00:38:48.5 |
HIP 60440 |
16.43 |
| 2026-02-17 12:00 |
12:24:21.01 |
+00:39:57.4 |
HIP 60440 |
12.93 |
| 2026-02-18 00:00 |
12:24:07.55 |
+00:41:07.1 |
HIP 60440 |
9.40 |
| 2026-02-18 12:00 |
12:23:53.95 |
+00:42:17.5 |
HIP 60440 |
5.87 |
| 2026-02-19 00:00 |
12:23:40.19 |
+00:43:28.8 |
HIP 60440 |
2.51 |
| 2026-02-19 12:00 |
12:23:26.29 |
+00:44:40.7 |
HIP 60440 |
2.18 |
| 2026-02-20 00:00 |
12:23:12.24 |
+00:45:53.5 |
HIP 60440 |
5.54 |
| 2026-02-20 12:00 |
12:22:58.05 |
+00:47:06.9 |
HIP 60440 |
9.21 |
| 2026-02-21 00:00 |
12:22:43.72 |
+00:48:21.1 |
HIP 60440 |
12.97 |
| 2026-02-21 12:00 |
12:22:29.26 |
+00:49:35.9 |
HIP 60440 |
16.77 |
| 2026-02-22 00:00 |
12:22:14.66 |
+00:50:51.5 |
HIP 60440 |
20.62 |
| 2026-02-22 12:00 |
12:21:59.92 |
+00:52:07.7 |
HIP 60440 |
24.51 |
| 2026-02-23 00:00 |
12:21:45.06 |
+00:53:24.5 |
HIP 60440 |
28.43 |
| 2026-02-23 12:00 |
12:21:30.06 |
+00:54:42.0 |
HIP 60440 |
32.39 |
| 2026-02-24 00:00 |
12:21:14.94 |
+00:56:00.1 |
HIP 60062 |
36.28 |