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) |
| 2026-03-26 00:00 |
09:44:14.71 |
+09:15:19.7 |
HIP 47710 |
21.17 |
| 2026-03-26 12:00 |
09:44:05.31 |
+09:16:18.5 |
HIP 47710 |
19.37 |
| 2026-03-27 00:00 |
09:43:56.05 |
+09:17:16.7 |
HIP 47710 |
17.76 |
| 2026-03-27 12:00 |
09:43:46.95 |
+09:18:14.2 |
HIP 47710 |
16.38 |
| 2026-03-28 00:00 |
09:43:37.99 |
+09:19:11.0 |
HIP 47710 |
15.29 |
| 2026-03-28 12:00 |
09:43:29.19 |
+09:20:07.1 |
HIP 47710 |
14.52 |
| 2026-03-29 00:00 |
09:43:20.53 |
+09:21:02.6 |
HIP 47710 |
14.10 |
| 2026-03-29 12:00 |
09:43:12.03 |
+09:21:57.4 |
HIP 47710 |
14.06 |
| 2026-03-30 00:00 |
09:43:03.69 |
+09:22:51.5 |
HIP 47710 |
14.37 |
| 2026-03-30 12:00 |
09:42:55.49 |
+09:23:44.9 |
HIP 47710 |
15.00 |
| 2026-03-31 00:00 |
09:42:47.45 |
+09:24:37.7 |
HIP 47710 |
15.89 |
| 2026-03-31 12:00 |
09:42:39.57 |
+09:25:29.7 |
HIP 47710 |
16.98 |
| 2026-04-01 00:00 |
09:42:31.83 |
+09:26:21.1 |
HIP 47710 |
18.23 |
| 2026-04-01 12:00 |
09:42:24.26 |
+09:27:11.7 |
HIP 47710 |
19.59 |
| 2026-04-02 00:00 |
09:42:16.84 |
+09:28:01.6 |
HIP 47710 |
21.03 |
| 2026-04-02 12:00 |
09:42:09.58 |
+09:28:50.9 |
HIP 47710 |
22.52 |
| 2026-04-03 00:00 |
09:42:02.47 |
+09:29:39.4 |
HIP 47462 |
22.81 |
| 2026-04-03 12:00 |
09:41:55.52 |
+09:30:27.2 |
HIP 47462 |
21.29 |
| 2026-04-04 00:00 |
09:41:48.73 |
+09:31:14.3 |
HIP 47462 |
19.88 |
| 2026-04-04 12:00 |
09:41:42.10 |
+09:32:00.6 |
HIP 47462 |
18.57 |
| 2026-04-05 00:00 |
09:41:35.63 |
+09:32:46.2 |
HIP 47462 |
17.38 |
| 2026-04-05 12:00 |
09:41:29.31 |
+09:33:31.1 |
HIP 47462 |
16.32 |
| 2026-04-06 00:00 |
09:41:23.16 |
+09:34:15.3 |
HIP 47462 |
15.41 |
| 2026-04-06 12:00 |
09:41:17.17 |
+09:34:58.7 |
HIP 47462 |
14.66 |
| 2026-04-07 00:00 |
09:41:11.33 |
+09:35:41.4 |
HIP 47462 |
14.09 |
| 2026-04-07 12:00 |
09:41:05.66 |
+09:36:23.4 |
HIP 47462 |
13.69 |
| 2026-04-08 00:00 |
09:41:00.14 |
+09:37:04.6 |
HIP 47462 |
13.48 |
| 2026-04-08 12:00 |
09:40:54.79 |
+09:37:45.0 |
HIP 47462 |
13.44 |
| 2026-04-09 00:00 |
09:40:49.60 |
+09:38:24.7 |
HIP 47462 |
13.57 |
| 2026-04-09 12:00 |
09:40:44.57 |
+09:39:03.7 |
HIP 47462 |
13.84 |
| 2026-04-10 00:00 |
09:40:39.70 |
+09:39:41.8 |
HIP 47435 |
13.75 |
| 2026-04-10 12:00 |
09:40:34.99 |
+09:40:19.3 |
HIP 47435 |
13.34 |
| 2026-04-11 00:00 |
09:40:30.45 |
+09:40:55.9 |
HIP 47435 |
13.07 |
| 2026-04-11 12:00 |
09:40:26.07 |
+09:41:31.8 |
HIP 47435 |
12.93 |
| 2026-04-12 00:00 |
09:40:21.85 |
+09:42:07.0 |
HIP 47435 |
12.92 |
| 2026-04-12 12:00 |
09:40:17.79 |
+09:42:41.3 |
HIP 47435 |
13.02 |
| 2026-04-13 00:00 |
09:40:13.90 |
+09:43:14.9 |
HIP 47435 |
13.21 |
| 2026-04-13 12:00 |
09:40:10.17 |
+09:43:47.7 |
HIP 47435 |
13.50 |
| 2026-04-14 00:00 |
09:40:06.60 |
+09:44:19.8 |
HIP 47435 |
13.85 |
| 2026-04-14 12:00 |
09:40:03.19 |
+09:44:51.0 |
HIP 47435 |
14.26 |
| 2026-04-15 00:00 |
09:39:59.95 |
+09:45:21.5 |
HIP 47435 |
14.71 |
| 2026-04-15 12:00 |
09:39:56.87 |
+09:45:51.2 |
HIP 47435 |
15.20 |
| 2026-04-16 00:00 |
09:39:53.96 |
+09:46:20.1 |
HIP 47435 |
15.71 |