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) |
| 2026-06-01 00:00 |
09:46:08.57 |
+09:35:27.7 |
HIP 47710 |
37.12 |
| 2026-06-01 12:00 |
09:46:18.72 |
+09:34:46.9 |
HIP 48055 |
36.67 |
| 2026-06-02 00:00 |
09:46:28.97 |
+09:34:05.3 |
HIP 48055 |
35.84 |
| 2026-06-02 12:00 |
09:46:39.33 |
+09:33:23.1 |
HIP 48055 |
35.17 |
| 2026-06-03 00:00 |
09:46:49.79 |
+09:32:40.3 |
HIP 48055 |
34.70 |
| 2026-06-03 12:00 |
09:47:00.36 |
+09:31:56.8 |
HIP 48055 |
34.43 |
| 2026-06-04 00:00 |
09:47:11.03 |
+09:31:12.7 |
HIP 48055 |
34.38 |
| 2026-06-04 12:00 |
09:47:21.81 |
+09:30:27.9 |
HIP 48055 |
34.55 |
| 2026-06-05 00:00 |
09:47:32.68 |
+09:29:42.5 |
HIP 48055 |
34.94 |
| 2026-06-05 12:00 |
09:47:43.66 |
+09:28:56.4 |
HIP 48146 |
34.97 |
| 2026-06-06 00:00 |
09:47:54.74 |
+09:28:09.8 |
HIP 48146 |
33.01 |
| 2026-06-06 12:00 |
09:48:05.92 |
+09:27:22.4 |
HIP 48146 |
31.17 |
| 2026-06-07 00:00 |
09:48:17.20 |
+09:26:34.5 |
HIP 48146 |
29.47 |
| 2026-06-07 12:00 |
09:48:28.58 |
+09:25:45.9 |
HIP 48146 |
27.96 |
| 2026-06-08 00:00 |
09:48:40.06 |
+09:24:56.7 |
HIP 48146 |
26.67 |
| 2026-06-08 12:00 |
09:48:51.63 |
+09:24:06.9 |
HIP 48246 |
25.45 |
| 2026-06-09 00:00 |
09:49:03.30 |
+09:23:16.5 |
HIP 48246 |
23.96 |
| 2026-06-09 12:00 |
09:49:15.07 |
+09:22:25.4 |
HIP 48246 |
22.77 |
| 2026-06-10 00:00 |
09:49:26.93 |
+09:21:33.7 |
HIP 48246 |
21.93 |
| 2026-06-10 12:00 |
09:49:38.89 |
+09:20:41.4 |
HIP 48246 |
21.50 |
| 2026-06-11 00:00 |
09:49:50.94 |
+09:19:48.5 |
HIP 48246 |
21.50 |
| 2026-06-11 12:00 |
09:50:03.08 |
+09:18:55.0 |
HIP 48246 |
21.96 |
| 2026-06-12 00:00 |
09:50:15.32 |
+09:18:00.9 |
HIP 48246 |
22.85 |
| 2026-06-12 12:00 |
09:50:27.65 |
+09:17:06.1 |
HIP 48246 |
24.13 |
| 2026-06-13 00:00 |
09:50:40.07 |
+09:16:10.8 |
HIP 48246 |
25.76 |
| 2026-06-13 12:00 |
09:50:52.58 |
+09:15:14.8 |
HIP 48246 |
27.68 |
| 2026-06-14 00:00 |
09:51:05.18 |
+09:14:18.3 |
HIP 48246 |
29.85 |
| 2026-06-14 12:00 |
09:51:17.86 |
+09:13:21.2 |
HIP 48246 |
32.22 |
| 2026-06-15 00:00 |
09:51:30.64 |
+09:12:23.4 |
HIP 48246 |
34.76 |
| 2026-06-15 12:00 |
09:51:43.50 |
+09:11:25.1 |
HIP 48246 |
37.43 |
| 2026-06-16 00:00 |
09:51:56.45 |
+09:10:26.2 |
HIP 48498 |
36.29 |
| 2026-06-16 12:00 |
09:52:09.48 |
+09:09:26.7 |
HIP 48498 |
33.60 |
| 2026-06-17 00:00 |
09:52:22.60 |
+09:08:26.7 |
HIP 48498 |
31.03 |
| 2026-06-17 12:00 |
09:52:35.80 |
+09:07:26.0 |
HIP 48498 |
28.60 |
| 2026-06-18 00:00 |
09:52:49.09 |
+09:06:24.8 |
HIP 48498 |
26.38 |
| 2026-06-18 12:00 |
09:53:02.45 |
+09:05:23.0 |
HIP 48498 |
24.43 |
| 2026-06-19 00:00 |
09:53:15.90 |
+09:04:20.7 |
HIP 48498 |
22.83 |
| 2026-06-19 12:00 |
09:53:29.43 |
+09:03:17.8 |
HIP 48498 |
21.66 |
| 2026-06-20 00:00 |
09:53:43.04 |
+09:02:14.3 |
HIP 48498 |
21.01 |
| 2026-06-20 12:00 |
09:53:56.72 |
+09:01:10.3 |
HIP 48498 |
20.94 |
| 2026-06-21 00:00 |
09:54:10.49 |
+09:00:05.7 |
HIP 48498 |
21.47 |
| 2026-06-21 12:00 |
09:54:24.33 |
+08:59:00.6 |
HIP 48498 |
22.56 |
| 2026-06-22 00:00 |
09:54:38.24 |
+08:57:54.9 |
HIP 48498 |
24.15 |