メタデータ
| 項目 |
値 |
| Designation |
471P/LINEAR-Lemmon |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-12-20T07:38:00.384000Z |
| Orbit solution date (soln_date, UTC) |
2025-02-28T13:42:36Z |
| Obs used |
911 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
16.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2010-12-31T07:04:42.816000Z |
| Discovery magnitude (MPC) |
19.40 |
| Discovery observatory (MPC) |
704 · Lincoln Laboratory ETS, New Mexico |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2023-07-24.0000000 |
| e |
0.62777839 |
| q (au) |
2.123265 |
| a (au) |
5.704303 |
| i (deg) |
4.790901 |
| Ω (om, deg) |
283.347061 |
| ω (w, deg) |
94.964365 |
| M (ma, deg) |
349.197793 |
等級
散乱 + 全体線形
$$
M_a = (9.726 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.726 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.893 |
| 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 |
| 2023-05-24 |
2023-07-28 |
+10.4044 |
-3.520 |
| 2023-07-28 |
2023-12-18 |
+2.8020 |
-0.914 |
| 2023-12-22 |
2025-02-27 |
-10.3387 |
+2.991 |
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) |
| 2026-07-29 00:00 |
10:14:30.00 |
+07:15:10.8 |
HIP 50178 |
17.19 |
| 2026-07-29 12:00 |
10:14:47.66 |
+07:13:32.7 |
HIP 50178 |
15.92 |
| 2026-07-30 00:00 |
10:15:05.34 |
+07:11:54.3 |
HIP 50178 |
15.98 |
| 2026-07-30 12:00 |
10:15:23.05 |
+07:10:15.7 |
HIP 50255 |
15.47 |
| 2026-07-31 00:00 |
10:15:40.78 |
+07:08:36.7 |
HIP 50255 |
13.07 |
| 2026-07-31 12:00 |
10:15:58.54 |
+07:06:57.4 |
HIP 50255 |
12.11 |
| 2026-08-01 00:00 |
10:16:16.32 |
+07:05:17.8 |
HIP 50255 |
12.91 |
| 2026-08-01 12:00 |
10:16:34.12 |
+07:03:37.9 |
HIP 50255 |
15.20 |
| 2026-08-02 00:00 |
10:16:51.95 |
+07:01:57.7 |
HIP 50255 |
18.45 |
| 2026-08-02 12:00 |
10:17:09.79 |
+07:00:17.2 |
HIP 50255 |
22.24 |
| 2026-08-03 00:00 |
10:17:27.66 |
+06:58:36.5 |
HIP 50491 |
25.20 |
| 2026-08-03 12:00 |
10:17:45.55 |
+06:56:55.4 |
HIP 50501 |
21.94 |
| 2026-08-04 00:00 |
10:18:03.46 |
+06:55:14.0 |
HIP 50501 |
17.83 |
| 2026-08-04 12:00 |
10:18:21.38 |
+06:53:32.4 |
HIP 50501 |
14.14 |
| 2026-08-05 00:00 |
10:18:39.33 |
+06:51:50.5 |
HIP 50501 |
11.27 |
| 2026-08-05 12:00 |
10:18:57.29 |
+06:50:08.3 |
HIP 50501 |
9.97 |
| 2026-08-06 00:00 |
10:19:15.28 |
+06:48:25.8 |
HIP 50501 |
10.84 |
| 2026-08-06 12:00 |
10:19:33.28 |
+06:46:43.1 |
HIP 50501 |
13.46 |
| 2026-08-07 00:00 |
10:19:51.29 |
+06:45:00.1 |
HIP 50501 |
17.06 |
| 2026-08-07 12:00 |
10:20:09.33 |
+06:43:16.8 |
HIP 50637 |
18.40 |
| 2026-08-08 00:00 |
10:20:27.37 |
+06:41:33.3 |
HIP 50637 |
15.81 |
| 2026-08-08 12:00 |
10:20:45.44 |
+06:39:49.5 |
HIP 50637 |
14.40 |
| 2026-08-09 00:00 |
10:21:03.52 |
+06:38:05.4 |
HIP 50637 |
14.53 |
| 2026-08-09 12:00 |
10:21:21.61 |
+06:36:21.1 |
HIP 50637 |
16.17 |
| 2026-08-10 00:00 |
10:21:39.71 |
+06:34:36.5 |
HIP 50637 |
18.92 |
| 2026-08-10 12:00 |
10:21:57.83 |
+06:32:51.7 |
HIP 50851 |
15.56 |
| 2026-08-11 00:00 |
10:22:15.96 |
+06:31:06.7 |
HIP 50851 |
11.15 |
| 2026-08-11 12:00 |
10:22:34.10 |
+06:29:21.4 |
HIP 50851 |
7.29 |
| 2026-08-12 00:00 |
10:22:52.26 |
+06:27:35.8 |
HIP 50851 |
5.38 |
| 2026-08-12 12:00 |
10:23:10.42 |
+06:25:50.1 |
HIP 50851 |
7.18 |
| 2026-08-13 00:00 |
10:23:28.59 |
+06:24:04.1 |
HIP 50851 |
11.01 |
| 2026-08-13 12:00 |
10:23:46.77 |
+06:22:17.9 |
HIP 50851 |
15.43 |
| 2026-08-14 00:00 |
10:24:04.96 |
+06:20:31.5 |
HIP 50851 |
20.05 |
| 2026-08-14 12:00 |
10:24:23.16 |
+06:18:44.8 |
HIP 50851 |
24.76 |
| 2026-08-15 00:00 |
10:24:41.36 |
+06:16:57.9 |
HIP 51023 |
27.22 |
| 2026-08-15 12:00 |
10:24:59.57 |
+06:15:10.9 |
HIP 51023 |
24.05 |
| 2026-08-16 00:00 |
10:25:17.78 |
+06:13:23.6 |
HIP 51023 |
21.51 |
| 2026-08-16 12:00 |
10:25:36.00 |
+06:11:36.1 |
HIP 51122 |
17.94 |
| 2026-08-17 00:00 |
10:25:54.23 |
+06:09:48.5 |
HIP 51122 |
13.11 |
| 2026-08-17 12:00 |
10:26:12.46 |
+06:08:00.6 |
HIP 51122 |
8.33 |
| 2026-08-18 00:00 |
10:26:30.69 |
+06:06:12.6 |
HIP 51122 |
3.80 |
| 2026-08-18 12:00 |
10:26:48.92 |
+06:04:24.3 |
HIP 51122 |
2.65 |
| 2026-08-19 00:00 |
10:27:07.16 |
+06:02:35.9 |
HIP 51122 |
6.87 |