メタデータ
| 項目 |
値 |
| Designation |
C/2000 S3 (LONEOS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-07-16T07:19:31.595520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:06Z |
| Obs used |
33 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
21.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2000-10-24.0000000 |
| e |
0.77228725 |
| q (au) |
2.662232 |
| a (au) |
11.691185 |
| i (deg) |
25.164344 |
| Ω (om, deg) |
41.153195 |
| ω (w, deg) |
298.271387 |
| M (ma, deg) |
2.458039 |
等級
散乱 + 全体線形
$$
M_a = (16.319 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.319 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.587 |
| k |
0.800 |
| 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) |
| 2026-07-29 00:00 |
11:58:47.04 |
+20:05:24.9 |
HIP 58314 |
19.37 |
| 2026-07-29 12:00 |
11:58:50.94 |
+20:04:35.1 |
HIP 58314 |
19.99 |
| 2026-07-30 00:00 |
11:58:54.87 |
+20:03:45.3 |
HIP 58314 |
20.68 |
| 2026-07-30 12:00 |
11:58:58.83 |
+20:02:55.3 |
HIP 58314 |
21.42 |
| 2026-07-31 00:00 |
11:59:02.84 |
+20:02:05.4 |
HIP 58314 |
22.21 |
| 2026-07-31 12:00 |
11:59:06.88 |
+20:01:15.4 |
HIP 58314 |
23.06 |
| 2026-08-01 00:00 |
11:59:10.95 |
+20:00:25.3 |
HIP 58314 |
23.95 |
| 2026-08-01 12:00 |
11:59:15.06 |
+19:59:35.2 |
HIP 58314 |
24.88 |
| 2026-08-02 00:00 |
11:59:19.20 |
+19:58:45.1 |
HIP 58467 |
25.33 |
| 2026-08-02 12:00 |
11:59:23.37 |
+19:57:54.9 |
HIP 58467 |
24.47 |
| 2026-08-03 00:00 |
11:59:27.59 |
+19:57:04.7 |
HIP 58467 |
23.65 |
| 2026-08-03 12:00 |
11:59:31.83 |
+19:56:14.5 |
HIP 58467 |
22.86 |
| 2026-08-04 00:00 |
11:59:36.11 |
+19:55:24.3 |
HIP 58467 |
22.13 |
| 2026-08-04 12:00 |
11:59:40.42 |
+19:54:34.0 |
HIP 58467 |
21.46 |
| 2026-08-05 00:00 |
11:59:44.76 |
+19:53:43.7 |
HIP 58467 |
20.84 |
| 2026-08-05 12:00 |
11:59:49.14 |
+19:52:53.3 |
HIP 58467 |
20.30 |
| 2026-08-06 00:00 |
11:59:53.55 |
+19:52:03.0 |
HIP 58467 |
19.83 |
| 2026-08-06 12:00 |
11:59:57.99 |
+19:51:12.6 |
HIP 58467 |
19.45 |
| 2026-08-07 00:00 |
12:00:02.47 |
+19:50:22.2 |
HIP 58467 |
19.15 |
| 2026-08-07 12:00 |
12:00:06.98 |
+19:49:31.8 |
HIP 58467 |
18.96 |
| 2026-08-08 00:00 |
12:00:11.52 |
+19:48:41.4 |
HIP 58467 |
18.86 |
| 2026-08-08 12:00 |
12:00:16.09 |
+19:47:51.0 |
HIP 58467 |
18.86 |
| 2026-08-09 00:00 |
12:00:20.69 |
+19:47:00.6 |
HIP 58467 |
18.97 |
| 2026-08-09 12:00 |
12:00:25.32 |
+19:46:10.2 |
HIP 58467 |
19.18 |
| 2026-08-10 00:00 |
12:00:29.98 |
+19:45:19.7 |
HIP 58467 |
19.49 |
| 2026-08-10 12:00 |
12:00:34.68 |
+19:44:29.3 |
HIP 58467 |
19.90 |
| 2026-08-11 00:00 |
12:00:39.40 |
+19:43:38.9 |
HIP 58519 |
20.20 |
| 2026-08-11 12:00 |
12:00:44.15 |
+19:42:48.5 |
HIP 58519 |
19.93 |
| 2026-08-12 00:00 |
12:00:48.94 |
+19:41:58.1 |
HIP 58519 |
19.76 |
| 2026-08-12 12:00 |
12:00:53.75 |
+19:41:07.8 |
HIP 58519 |
19.70 |
| 2026-08-13 00:00 |
12:00:58.59 |
+19:40:17.4 |
HIP 58519 |
19.74 |
| 2026-08-13 12:00 |
12:01:03.46 |
+19:39:27.1 |
HIP 58519 |
19.88 |
| 2026-08-14 00:00 |
12:01:08.36 |
+19:38:36.8 |
HIP 58519 |
20.13 |
| 2026-08-14 12:00 |
12:01:13.28 |
+19:37:46.5 |
HIP 58519 |
20.49 |
| 2026-08-15 00:00 |
12:01:18.24 |
+19:36:56.3 |
HIP 58519 |
20.94 |
| 2026-08-15 12:00 |
12:01:23.22 |
+19:36:06.1 |
HIP 58519 |
21.48 |
| 2026-08-16 00:00 |
12:01:28.23 |
+19:35:15.9 |
HIP 58519 |
22.11 |
| 2026-08-16 12:00 |
12:01:33.26 |
+19:34:25.7 |
HIP 58701 |
21.43 |
| 2026-08-17 00:00 |
12:01:38.32 |
+19:33:35.6 |
HIP 58701 |
20.08 |
| 2026-08-17 12:00 |
12:01:43.41 |
+19:32:45.6 |
HIP 58701 |
18.76 |
| 2026-08-18 00:00 |
12:01:48.52 |
+19:31:55.6 |
HIP 58701 |
17.45 |
| 2026-08-18 12:00 |
12:01:53.66 |
+19:31:05.6 |
HIP 58701 |
16.17 |
| 2026-08-19 00:00 |
12:01:58.83 |
+19:30:15.7 |
HIP 58701 |
14.92 |