メタデータ
| 項目 |
値 |
| Designation |
467P/LINEAR-Grauer |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-01-06T17:10:22.854720Z |
| Orbit solution date (soln_date, UTC) |
2025-01-02T20:13:05Z |
| Obs used |
98 |
| NEO |
- |
| M1 |
8.000 |
| K1 |
12.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-04-20T09:25:04.483200Z |
| Discovery magnitude (MPC) |
23.00 G |
| Discovery observatory (MPC) |
I11 · Gemini South Observatory, Cerro Pachon |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-10-23.0000000 |
| e |
0.07147570 |
| q (au) |
5.293712 |
| a (au) |
5.701210 |
| i (deg) |
2.531000 |
| Ω (om, deg) |
44.086442 |
| ω (w, deg) |
264.661424 |
| M (ma, deg) |
100.298035 |
等級
散乱 + 全体線形
$$
M_a = (14.752 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.752 |
| n |
2.000 |
| gf |
0.858 |
| gb |
-0.936 |
| k |
1.000 |
| δ90 |
5.591 |
| 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 |
03:50:43.33 |
+20:26:20.0 |
HIP 18025 |
8.97 |
| 2026-07-29 12:00 |
03:50:59.12 |
+20:27:14.8 |
HIP 18025 |
6.29 |
| 2026-07-30 00:00 |
03:51:14.79 |
+20:28:09.1 |
HIP 18025 |
5.27 |
| 2026-07-30 12:00 |
03:51:30.35 |
+20:29:03.0 |
HIP 18025 |
6.65 |
| 2026-07-31 00:00 |
03:51:45.80 |
+20:29:56.5 |
HIP 18025 |
9.41 |
| 2026-07-31 12:00 |
03:52:01.13 |
+20:30:49.6 |
HIP 18025 |
12.64 |
| 2026-08-01 00:00 |
03:52:16.35 |
+20:31:42.2 |
HIP 18025 |
16.05 |
| 2026-08-01 12:00 |
03:52:31.46 |
+20:32:34.4 |
HIP 18025 |
19.53 |
| 2026-08-02 00:00 |
03:52:46.44 |
+20:33:26.2 |
HIP 18165 |
21.26 |
| 2026-08-02 12:00 |
03:53:01.31 |
+20:34:17.6 |
HIP 18165 |
21.81 |
| 2026-08-03 00:00 |
03:53:16.06 |
+20:35:08.6 |
HIP 18165 |
22.91 |
| 2026-08-03 12:00 |
03:53:30.70 |
+20:35:59.1 |
HIP 18165 |
24.47 |
| 2026-08-04 00:00 |
03:53:45.21 |
+20:36:49.3 |
HIP 18165 |
26.39 |
| 2026-08-04 12:00 |
03:53:59.60 |
+20:37:38.9 |
HIP 18165 |
28.60 |
| 2026-08-05 00:00 |
03:54:13.87 |
+20:38:28.2 |
HIP 18405 |
27.48 |
| 2026-08-05 12:00 |
03:54:28.02 |
+20:39:17.1 |
HIP 18405 |
24.08 |
| 2026-08-06 00:00 |
03:54:42.05 |
+20:40:05.5 |
HIP 18405 |
20.71 |
| 2026-08-06 12:00 |
03:54:55.95 |
+20:40:53.5 |
HIP 18405 |
17.37 |
| 2026-08-07 00:00 |
03:55:09.72 |
+20:41:41.0 |
HIP 18405 |
14.06 |
| 2026-08-07 12:00 |
03:55:23.37 |
+20:42:28.2 |
HIP 18405 |
10.79 |
| 2026-08-08 00:00 |
03:55:36.89 |
+20:43:14.9 |
HIP 18405 |
7.57 |
| 2026-08-08 12:00 |
03:55:50.28 |
+20:44:01.2 |
HIP 18405 |
4.43 |
| 2026-08-09 00:00 |
03:56:03.55 |
+20:44:47.0 |
HIP 18405 |
1.67 |
| 2026-08-09 12:00 |
03:56:16.68 |
+20:45:32.4 |
HIP 18405 |
2.49 |
| 2026-08-10 00:00 |
03:56:29.68 |
+20:46:17.4 |
HIP 18405 |
5.41 |
| 2026-08-10 12:00 |
03:56:42.55 |
+20:47:01.9 |
HIP 18405 |
8.45 |
| 2026-08-11 00:00 |
03:56:55.29 |
+20:47:46.1 |
HIP 18405 |
11.49 |
| 2026-08-11 12:00 |
03:57:07.89 |
+20:48:29.7 |
HIP 18405 |
14.51 |
| 2026-08-12 00:00 |
03:57:20.36 |
+20:49:13.0 |
HIP 18544 |
12.93 |
| 2026-08-12 12:00 |
03:57:32.69 |
+20:49:55.8 |
HIP 18544 |
11.52 |
| 2026-08-13 00:00 |
03:57:44.89 |
+20:50:38.2 |
HIP 18544 |
10.76 |
| 2026-08-13 12:00 |
03:57:56.95 |
+20:51:20.1 |
HIP 18544 |
10.78 |
| 2026-08-14 00:00 |
03:58:08.87 |
+20:52:01.6 |
HIP 18544 |
11.53 |
| 2026-08-14 12:00 |
03:58:20.65 |
+20:52:42.7 |
HIP 18544 |
12.88 |
| 2026-08-15 00:00 |
03:58:32.29 |
+20:53:23.3 |
HIP 18544 |
14.64 |
| 2026-08-15 12:00 |
03:58:43.79 |
+20:54:03.5 |
HIP 18544 |
16.66 |
| 2026-08-16 00:00 |
03:58:55.15 |
+20:54:43.2 |
HIP 18544 |
18.84 |
| 2026-08-16 12:00 |
03:59:06.36 |
+20:55:22.6 |
HIP 18544 |
21.13 |
| 2026-08-17 00:00 |
03:59:17.44 |
+20:56:01.4 |
HIP 18544 |
23.47 |
| 2026-08-17 12:00 |
03:59:28.37 |
+20:56:39.9 |
HIP 18544 |
25.84 |
| 2026-08-18 00:00 |
03:59:39.15 |
+20:57:17.9 |
HIP 18684 |
25.57 |
| 2026-08-18 12:00 |
03:59:49.79 |
+20:57:55.5 |
HIP 18684 |
24.51 |
| 2026-08-19 00:00 |
04:00:00.29 |
+20:58:32.6 |
HIP 18684 |
23.69 |